MikroBasic PRO For PIC User Manual V100 V101

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Table of Contents
April 2009.

mikroBasic PRO for PIC

Reader’s note

DISCLAIMER:

mikroBASIC PRO for PIC and this manual are owned by mikroElektronika and are protected by copyright law and international copyright treaty. Therefore, you should treat this
manual like any other copyrighted material (e.g., a book). The manual and the compiler
may not be copied, partially or as a whole without the written consent from the mikroEelktronika. The PDF-edition of the manual can be printed for private or local use, but not for
distribution. Modifying the manual or the compiler is strictly prohibited.

HIGH RISK ACTIVITIES:
The mikroBASIC PRO for PICcompiler is not fault-tolerant and is not designed, manufactured or intended for use or resale as on-line control equipment in hazardous environments
requiring fail-safe performance, such as in the operation of nuclear facilities, aircraft navigation
or communication systems, air traffic control, direct life support machines, or weapons systems, in which the failure of the Software could lead directly to death, personal injury, or severe
physical or environmental damage ("High Risk Activities"). mikroElektronika and its suppliers
specifically disclaim any express or implied warranty of fitness for High Risk Activities.
LICENSE AGREEMENT:
By using the mikroBASIC PRO for PIC compiler, you agree to the terms of this agreement.
Only one person may use licensed version of mikroBASIC PRO for PIC compiler at a time.
Copyright © mikroElektronika 2003 - 2009.
This manual covers mikroBASIC PRO for PIC version 1.0 and the related topics. Newer
versions may contain changes without prior notice.
COMPILER BUG REPORTS:
The compiler has been carefully tested and debugged. It is, however, not possible to
guarantee a 100 % error free product. If you would like to report a bug, please contact us at
the address office@mikroe.com. Please include next information in your bug report:
- Your operating system
- Version of mikroBASIC PRO for PIC
- Code sample
- Description of a bug
CONTACT US:
mikroElektronika
Voice: + 381 (11) 36 28 830
Fax:
+ 381 (11) 36 28 831
Web:
www.mikroe.com
E-mail: office@mikroe.com

Windows is a Registered trademark of Microsoft Corp. All other trade and/or services marks
are the property of the respective owners.

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Table of Contents
CHAPTER 1

Introduction

CHAPTER 2

mikroBASIC PRO for PIC Environment

CHAPTER 3

mikroICD (In-Circuit Debugger)

CHAPTER 4

mikroBASIC PRO for PIC Specifics

CHAPTER 5

PIC Specifics

CHAPTER 6

mikroBASIC PRO for PIC Language Reference

CHAPTER 7

mikroBASIC PRO for PIC Libraries

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CHAPTER 1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Where to Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
mikroElektronika Associates License Statement and Limited Warranty . . . . . 4
IMPORTANT - READ CAREFULLY . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
HIGH RISK ACTIVITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
How to Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Who Gets the License Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
How to Get License Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
After Receving the License Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CHAPTER 2
IDE Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Main Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
File Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Edit Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Find Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Replace Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Find In Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Go To Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Regular expressions option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
View Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Toolbars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
File Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Edit Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Advanced Edit Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Find/Replace Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Project Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Build Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Build Toolbar come . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Debugger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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Styles Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Tools Toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Project Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Run Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Tools Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Help Menu Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Keyboard Shortcuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
IDE Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Customizing IDE Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Docking Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Saving Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Auto Hide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Advanced Code Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Advanced Editor Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Code Assistant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Code Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Parameter Assistant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Code Templates (Auto Complete) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Auto Correct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Spell Checker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Bookmarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Bookmarks m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Goto Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
comment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Also, the Code Edito . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Code Explorer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Routine List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Project Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Project Settings Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Library Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Error Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
STatisticS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Memory Usage Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
RAM Memory Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Used RAM Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
SFR Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
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ROM Memory Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
ROM Memory Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Functions Sorted By Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Functions Sorted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Sorts and displays functi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Functions Sorted By Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Functions Sorted By Name Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Sorts and displays functions by their names in a ch . . . . . . . . . . . . . . . 55
Functions Sorted By Size Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Functions Sorted By Addresses Chart . . . . . . . . . . . . . . . . . . . . . . . . . 56
Function Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Memory Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Displays summary of RAM and ROM m . . . . . . . . . . . . . . . . . . . . . . . . 57
Integrated Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
USART Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
EEPROM Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
ASCII Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Seven Segment Decoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Lcd Custom Character . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
mikroBasic PRO for PIC includes the L . . . . . . . . . . . . . . . . . . . . . . . . 61
Graphic LCD Bitmap Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
HID Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
The mikroBasic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Udp Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
The mikroBasic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
mikroBootloader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
What is a Bootloader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Macro Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Code editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Output settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Regular Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Simple matches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

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Escape sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Character classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Metacharacters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Metacharacters - Line separators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Metacharacters - Predefined classes . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Metacharacters - Word boundaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Metacharacters - Iterators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Metacharacters - Alternatives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Metacharacters - Subexpressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Metacharacters - Backreferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
mikroBasic PRO for PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Command Line Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Projects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
New Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
New Project Wizard Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Customizing Projects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Managing Project Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Add/Remove Files from Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Project Level Defines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Source Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Managing Source Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Creating new source file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Opening an existing file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Printing an open file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Saving file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Saving file under a different name . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Closing file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Clean Project Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Compilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Output Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Assembly View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Compiler Error Messages: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Warning Messages: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Hint Messages: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Software Simulator Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
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Breakpoints Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
View RAM Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stopwatch Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Simulator Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Creating New Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multiple Library Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
mikroICD (In-Circuit Debugger) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

90
93
94
95
96
96
97

CHAPTER 3
mikroICD Debugger Optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
mikroICD Debugger Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
mikroICD (In-Circuit Debugger) Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Breakpoints Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Watch Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Debugger Watch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
EEPROM Watch Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Code Watch Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
View RAM Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Common Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
mikro ICD Advanced Breakpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Program Memory Break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
File Register Break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Emulator Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Event Breakpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Stopwatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
CHAPTER 4
BASIC Standard Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Divergence from the Basic Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Basic Language Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Predefined Globals and Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
SFRs and related constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
All PIC SFRs are implicitly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
These defines are based on a valu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

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Accessing Individual Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Accessing Individual Bits Of Variables . . . . . . . . . . . . . . . . . . . . . . . . . 114
sbit type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
bit type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Linker Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Directive absolute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Directive org . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Built-in Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Lo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Hi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Higher . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Highest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Inc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Dec . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Delay_us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Delay_ms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Clock_KHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Clock_MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
ClrWdt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
DisableContextSaving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
SetFuncCall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
GetDateTime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
GetVersion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Code Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Optimizer has been . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
CHAPTER 5
Types Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nested call represents a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PIC18FxxJxx Specifics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shared Address SFRs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PIC16 Specifics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Breaking Through Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

130
130
131
131
131
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Limits of Indirect Approach Through FSR . . . . . . . . . . . . . . . . . . . . . . . 131
Memory Type Specifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
rx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
sfr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
CHAPTER 6
Lexical Elements Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Whitespace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Newline Character . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Whitespace in Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Tokens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Integer Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Floating Point Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Character Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Keywords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Case Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Uniqueness and Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Identifier Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Punctuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Parentheses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Comma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Colon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Dot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Program Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Organization of Main Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Organization of Other Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Scope and Visibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Visibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

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Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
mikroBasic PRO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Main Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Every project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Modules other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Implementation Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
External Modifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Variables and PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Functions and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Calling a function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Calling a procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Function Pointers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Forward declaration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Functions reentrancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Type Categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Simple Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Array Declaration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Constant Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
POINTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Structure Member Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Types Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Implicit Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Promotion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
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Clipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Explicit Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Operators Precedence and Associativity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Arithmetic Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Division by Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Unary Arithmetic Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Relational Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Relational Operators in Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Bitwise Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Bitwise Operators Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Unsigned and Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Signed and Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Bitwise Shift Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
BoOlean Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Assignment Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Conditional Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
If Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Nested if statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
SELECT Case statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Iteration Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
For Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Endless Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
While Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Do Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
The do stateme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Jump Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Break and Continue Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Break Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Continue Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Exit Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Goto Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Gosub Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
asm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

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Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Compiler Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Directives #DEFINE and #UNDEFINE . . . . . . . . . . . . . . . . . . . . . . . . . 193
Directives #IFDEF, $IFNDEF, #ELSEIF and #ELSE . . . . . . . . . . . . . . 194
Predefined Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Linker Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Directive absolute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Directive org . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
CHAPTER 7
Hardware PIC-specific Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Miscellaneous Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Library Dependencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Hardware Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
ADC Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
ADC_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
CAN Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
CANSetOperationMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
CANGetOperationMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
CANInitialize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
CANSetBaudRate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
CANSetMask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
CANSetFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
CANRead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
CANWrite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
CAN Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
CAN_OP_MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
CAN_CONFIG_FLAGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
CAN_TX_MSG_FLAGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
CAN_RX_MSG_FLAGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
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CAN_MASK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
CAN_FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
CANSPI Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
External dependecies of CANSPI Library . . . . . . . . . . . . . . . . . . . . . . . 220
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPISetOperationMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPIGetOperationMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPIInitialize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPISetBaudRate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPISetMask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPISetFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPIread . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPIWrite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
CANSPISetOperationMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
CANSPIGetOperationMode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
CANSPIInitialize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
CANSPISetBaudRate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
CANSPISetMask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
CANSPISetFilter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
CANSPIRead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
CANSPIWrite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
CANSPI Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
CANSPI_OP_MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
CANSPI_CONFIG_FLAGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
CANSPI_TX_MSG_FLAGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
CANSPI_RX_MSG_FLAGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
CANSPI_MASK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
CANSPI_FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Compact Flash Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
External dependencies of Compact Flash Library . . . . . . . . . . . . . . . . 236
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Cf_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

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Cf_Detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Read_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Read_Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Write_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Write_Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Read_Sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Write_Sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_QuickFormat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Assign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Rewrite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Append . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Delete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Set_File_Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Get_File_Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Get_File_Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cf_Fat_Get_Swap_File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EEPROM Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EEPROM_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EEPROM_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet_Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet_Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet_doPacket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet_putByte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet_putBytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

240
240
240
241
241
242
242
243
243
244
244
245
246
246
247
247
248
248
249
250
250
251
253
258
259
259
259
260
260
263
264
265
266
267
268
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Ethernet_putConstBytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Ethernet_putString . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Ethernet_putConstString . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Ethernet_getByte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Ethernet_getBytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Ethernet_UserTCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Ethernet_UserUDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Ethernet_getIpAddress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Ethernet_getGwIpAddress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Ethernet_getDnsIpAddress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Ethernet_getIpMask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Ethernet_confNetwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Ethernet_arpResolve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277
Ethernet_sendUDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Ethernet_dnsResolve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Ethernet_initDHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Ethernet_doDHCPLeaseTime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Ethernet_renewDHCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Flash Memory Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
FLASH_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
FLASH_Read_N_Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
FLASH_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
FLASH_Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
FLASH_Erase_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Graphic LCD Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
External dependencies of Graphic LCD Library . . . . . . . . . . . . . . . . . . 296
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Glcd_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
Glcd_Set_Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
Glcd_Set_X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299
Glcd_Set_Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Glcd_Read_Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Glcd_Write_Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301

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Glcd_Fill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Glcd_Dot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Glcd_Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Glcd_V_Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Glcd_H_Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
Glcd_Rectangl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Glcd_Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Glcd_Circle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Glcd_Set_Font . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Glcd_Write_Char . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
Glcd_Write_Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Glcd_Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Glcd HW connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
I˛C Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
2C1_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
I2C1_Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
I2C1_Repeated_Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
I2C1_Is_Idle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
I2C1_Rd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
I2C1_Wr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
I2C1_Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Keypad Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
External dependencies of Keypad Library . . . . . . . . . . . . . . . . . . . . . . . 316
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Keypad_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Keypad_Key_Press . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Keypad_Key_Click . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Keypad_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Keypad_Key_Press . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Keypad_Key_Click . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
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HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
LCD Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
External dependencies of LCD Library . . . . . . . . . . . . . . . . . . . . . . . . . 321
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Lcd_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Lcd_Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Lcd_Out_Cp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Lcd_Chr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Lcd_Chr_Cp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Lcd_Cmd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Available LCD Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
LCD HW connecti . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Manchester Code Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
External dependencies of Manchester Code Library . . . . . . . . . . . . . . 329
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Man_Receive_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Man_Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Man_Send_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Man_Send . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Man_Synchro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Man_Break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Connection Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Multi Media Card Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
External dependencies of MMC Library . . . . . . . . . . . . . . . . . . . . . . . . 339
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Mmc_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Mmc_Read_Sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Mmc_Write_Sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Mmc_Read_Cid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Mmc_Read_Csd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Routines for file handling: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Mmc_Fat_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Mmc_Fat_QuickFormat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339

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Mmc_Fat_Assign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Rewrite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Append . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Delete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Set_File_Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Get_File_Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Get_File_Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Get_Swap_File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Read_Sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Write_Sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Read_Cid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Read_Csd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_QuickFormat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Assign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Rewrite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Append . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Delete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Set_File_Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Get_File_Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Get_File_Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mmc_Fat_Get_Swap_File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OneWire Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ow_Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ow_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ow_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

339
339
339
339
339
339
339
339
339
339
339
340
341
342
343
343
344
345
346
347
347
348
348
349
349
350
351
352
352
354
357
358
358
358
358
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Ow_Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Ow_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Ow_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
Port Expander Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
External dependencies of Port Expander Library . . . . . . . . . . . . . . . . . 363
Library Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Read_Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Write_Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Read_PortA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Read_PortB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Read_PortAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Write_PortA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Write_PortB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Write_PortAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Set_DirectionPortA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Set_DirectionPortB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Set_DirectionPortAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Set_PullUpsPortA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Set_PullUpsPortB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Set_PullUpsPortAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Expander_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
Expander_Read_Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Expander_Write_Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Expander_Read_PortA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
Expander_Read_PortB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366
Expander_Read_PortAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
Expander_Write_PortA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
Expander_Write_PortB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Expander_Write_PortAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Expander_Set_DirectionPortA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
Expander_Set_DirectionPortB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
Expander_Set_DirectionPortAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370
Expander_Set_PullUpsPortA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370

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Expander_Set_PullUpsPortB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371
Expander_Set_PullUpsPortAB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
PS/2 Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
External dependencies of PS/2 Library . . . . . . . . . . . . . . . . . . . . . . . . . 374
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Ps2_Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Ps2_Key_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Ps2_Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375
Ps2_Key_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
Special Function Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
PWM Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
PWM1_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
PWM1_Set_Duty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
PWM1_Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
PWM1_Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383
RS-485 Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384
External dependencies of RS-485 Library . . . . . . . . . . . . . . . . . . . . . . . 384
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385
RS485master_Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
RS485master_Send . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386
RS485slave_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387
RS485slave_Receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
RS485slave_Send . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392
Software I˛C Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394
External dependecies of Soft_I2C Library . . . . . . . . . . . . . . . . . . . . . . . 394
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394
Soft_I2C_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
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Soft_I2C_Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
Soft_I2C_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396
Soft_I2C_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396
Soft_I2C_Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397
Soft_I2C_Break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397
LLibrary Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398
Software SPI Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401
External dependencies of Software SPI Library . . . . . . . . . . . . . . . . . . 401
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 401
Soft_Spi_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402
Soft_Spi_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Soft_Spi_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404
Software UART Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406
Soft_Uart_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406
Soft_UART_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407
Soft_Uart_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407
Soft_UART_Break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409
Sound Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Sound_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Sound_Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Sound_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Sound_Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
The example is a simple dem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413
Example of Sound Library sonnection . . . . . . . . . . . . . . . . . . . . . . . . . . 413
SPI Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
SPI1_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
_LOW_2_HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
_CLK_IDLE_LOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
_CLK_IDLE_HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415

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_DATA_SAMPLE_END . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
_DATA_SAMPLE_MIDDLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
_SLAVE_SS_ENABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
_MASTER_TMR2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
_MASTER_OSC_DIV64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
_MASTER_OSC_DIV16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
_MASTER_OSC_DIV4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Spi1_Init_Advanced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Spi1_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
Spi1_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
SPI_Set_Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 417
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 417
The code demonstrates how to u . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 417
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
SPI HW connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
SPI Ethernet Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419
SPI_Ethernet_RST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
SPI_Ethernet_CS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
External dependencies of SPI Ethernet Library . . . . . . . . . . . . . . . . . . 420
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421
SPI_Ethernet_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421
SPI_Ethernet_Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
SPI_Ethernet_Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424
SPI_Ethernet_doPacket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425
SPI_Ethernet_putByte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
SPI_Ethernet_putBytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
SPI_Ethernet_putConstBytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 427
SPI_Ethernet_putString . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 427
SPI_Ethernet_putConstString . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 428
SPI_Ethernet_getByte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 428
SPI_Ethernet_getBytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429
SPI_Ethernet_UserTCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430
SPI_Ethernet_UserUDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 431
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 431
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
SPI Graphic LCD Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
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External dependencies of SPI Graphic LCD Library . . . . . . . . . . . . . . . 440
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
SPI_Glcd_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 441
SPI_Glcd_Set_Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
SPI_Glcd_Set_Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
SPI_Glcd_Set_X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
SPI_Glcd_Read_Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443
SPI_Glcd_Write_Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444
SPI_Glcd_Fill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444
SPI_Glcd_Dot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 445
SPI_Glcd_Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 445
SPI_Glcd_V_Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 446
SPI_Glcd_H_Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 446
SPI_Glcd_Rectangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 447
SPI_Glcd_Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448
SPI_Glcd_Circle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448
SPI_Glcd_Set_Font . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 449
SPI_Glcd_Write_Char . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
SPI_Glcd_Write_Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 451
SPI_Glcd_Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 452
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 454
SPI LCD Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455
External dependencies of SPI LCD Library . . . . . . . . . . . . . . . . . . . . . . 455
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455
SPI_Lcd_Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456
SPI_Lcd_Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456
SPI_Lcd_Out_Cp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457
SPI_Lcd_Chr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 457
SPI_Lcd_Chr_Cp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 458
SPI_Lcd_Cmd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 458
Available LCD Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 459
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 461
SPI LCD8 (8-bit interface) Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 462
External dependencies of SPI LCD Library . . . . . . . . . . . . . . . . . . . . . . 462

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Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 462
SPI_Lcd8_Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 463
SPI_Lcd8_Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 463
SPI_Lcd8_Out_Cp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464
SPI_Lcd8_Chr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464
SPI_Lcd8_Chr_Cp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465
SPI_Lcd8_Cmd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465
Available LCD Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 467
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 468
SPI T6963C Graphic LCD Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469
External dependencies of SPI T6963C Graphic Lcd Library . . . . . . . . 469
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470
SPI_T6963C_Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 471
SPI_T6963C_WriteData . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472
SPI_T6963C_WriteCommand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472
SPI_T6963C_SetPtr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473
SPI_T6963C_WaitReady . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473
SPI_T6963C_Fill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473
SPI_T6963C_Dot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 474
SPI_T6963C_Write_Char . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 475
SPI_T6963C_Write_Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 476
SPI_T6963C_Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 477
SPI_T6963C_Rectangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 477
SPI_T6963C_Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 478
SPI_T6963C_Circle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 478
SPI_T6963C_Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479
SPI_T6963C_Sprite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479
SPI_T6963C_Set_Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480
SPI_T6963C_ClearBit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480
SPI_T6963C_SetBit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480
SPI_T6963C_NegBit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481
SPI_T6963C_DisplayGrPanel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481
SPI_T6963C_DisplayTxtPanel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481
SPI_T6963C_SetGrPanel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482
SPI_T6963C_SetTxtPanel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482
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SPI_T6963C_PanelFill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI_T6963C_GrFill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI_T6963C_TxtFill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI_T6963C_Cursor_Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI_T6963C_Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI_T6963C_Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI_T6963C_Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI_T6963C_Cursor_Blink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

483
483
483
484
484
484
485
485
485
490

T6963C Graphic LCD Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491
External dependencies of T6963C Graphic LCD Library . . . . . . . . . . . 491
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492
T6963C_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492
T6963C_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 493
T6963C_WriteData . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494
T6963C_WriteCommand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494
T6963C_SetPtr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495
T6963C_WaitReady . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495
T6963C_Fill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495
T6963C_Dot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 496
T6963C_Write_Char . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 497
T6963C_Write_Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498
T6963C_Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 499
T6963C_Rectangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 499
T6963C_Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
T6963C_Circle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500
T6963C_Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
T6963C_Sprite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 501
T6963C_Set_Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
T6963C_DisplayGrPanel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
T6963C_DisplayTxtPanel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
T6963C_SetGrPanel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
T6963C_SetTxtPanel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
T6963C_PanelFill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504

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T6963C_GrFill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T6963C_TxtFill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T6963C_Cursor_Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T6963C_Graphics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T6963C_Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T6963C_Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T6963C_Cursor_Blink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Data_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Init . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Data_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Tx_Idle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Read_Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART1_Write_Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART_Set_Active . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UART HW connect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB HID Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Descriptor File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hid_Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hid_Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hid_Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hid_Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HW Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Miscellaneous Libraries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Button Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The Button libra . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

504
504
505
505
505
506
506
506
512
513
513
513
513
514
514
515
515
516
516
517
517
518
518
518
519
519
519
519
520
520
520
521
523
524
524
524

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Conversions Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ByteToStr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ShortToStr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WordToStr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IntToStr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LongintToStr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LongWordToStr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FloatToStr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
StrToInt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
StrToWord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dec2Bcd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bcd2Dec16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dec2Bcd16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Math Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Library Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
acos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
asin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
atan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
atan2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ceil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
cos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
cosh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
eval_poly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
exp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
fabs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
frexp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ldexp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
log10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
modf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
pow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
sin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
sinh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
sqrt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

xxviii

525
525
526
526
527
527
528
528
529
530
530
530
531
531
532
532
533
533
533
533
533
533
533
534
534
534
534
534
534
534
535
535
535
535
535
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Table of Contents

tan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 535
tanh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 535
String Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 536
Library Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 536
memchr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 537
memcmp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 537
memcpy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538
memmove . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538
memset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538
strcat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538
strchr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 539
strcmp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 539
strcpy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 539
strcspn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 539
strlen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540
strncat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540
strncmp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540
strncpy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540
strpbrk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540
strrchr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 541
strspn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 541
strstr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 541
Time Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 542
Time_dateToE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 542
Time_epochToDate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 543
Time_dateDiff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 543
Library Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 544
TimeStruct type definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 545
Trigonometry Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 546
Library Routines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 546
sinE3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 546
cosE3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 547

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mikroBasic PRO for PIC

MIKROELEKTRONIKA - SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER

1

Introduction to
mikroBasic PRO for PIC
The mikroBasic PRO for PIC is a powerful, feature-rich development tool for PIC
microcontrollers. It is designed to provide the programmer with the easiest possible solution to developing applications for embedded systems, without compromising performance or control.

1

CHAPTER 1
mikroBasic PRO for PIC

Introduction

mikroBasic PRO for PIC IDE

Features
mikroBasic PRO for PIC allows you to quickly develop and deploy complex applications:









2

Write your Basic source code using the built-in Code Editor (Code and Parame
ter Assistants, Code Folding, Syntax Highlighting, Spell Checker, Auto Correct,
Code Templates, and more.)
Use included mikroBasic PRO libraries to dramatically speed up the develop
ment: data acquisition, memory, displays, conversions, communication etc.
Monitor your program structure, variables, and functions in the Code Explorer.
Generate commented, human-readable assembly, and standard HEX compati
ble with all programmers.
Use the integrated mikroICD (In-Circuit Debugger) Real-Time debugging tool to
monitor program execution on the hardware level.
Inspect program flow and debug executable logic with the integrated Software
Simulator.
Get detailed reports and graphs: RAM and ROM map, code statistics, assembly
isting, calling tree, and more.
mikroBasic PRO for PIC provides plenty of examples to expand, develop, and
use as building bricks in your projects. Copy them entirely if you deem fit – that’s
why we included them with the compiler.

MIKROELEKTRONIKA - SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 1
mikroBasic PRO for PIC

Introduction

Where to Start


In case that you’re a beginner in programming PIC microcontrollers, read
carefully th PIC Specifics chapter. It might give you some useful pointers on
PIC constraints, code portability, and good programming practices.



If you are experienced in Basic programming, you will probably want to con
sult mikroBasic PRO for PIC Specifics first. For language issues, you can
always refer to the comprehensive Language Reference. A complete list of
included libraries is available at mikroBasic PRO for PIC Libraries.



If you are not very experienced in Basic programming, don’t panic! mikroBa
sic PRO for PIC provides plenty of examples making it easy for you to go
quickly. We suggest that you first consult Projects and Source Files, and
then start browsing the examples that you're the most interested in.

MIKROELEKTRONIKA - SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

3

CHAPTER 1
mikroBasic PRO for PIC

Introduction

MIKROELEKTRONIKA ASSOCIATES LICENSE STATEMENT AND
LIMITED WARRANTY
IMPORTANT - READ CAREFULLY
This license statement and limited warranty constitute a legal agreement (“License
Agreement”) between you (either as an individual or a single entity) and mikroElektronika (“mikroElektronika Associates”) for software product (“Software”) identified
above, including any software, media, and accompanying on-line or printed documentation.
BY INSTALLING, COPYING, OR OTHERWISE USING SOFTWARE, YOU AGREE
TO BE BOUND BY ALL TERMS AND CONDITIONS OF THE LICENSE
AGREEMENT.
Upon your acceptance of the terms and conditions of the License Agreement,
mikroElektronika Associates grants you the right to use Software in a way provided
below.
This Software is owned by mikroElektronika Associates and is protected by copyright law and international copyright treaty. Therefore, you must treat this Software
like any other copyright material (e.g., a book).
You may transfer Software and documentation on a permanent basis provided. You
retain no copies and the recipient agrees to the terms of the License Agreement.
Except as provided in the License Agreement, you may not transfer, rent, lease,
lend, copy, modify, translate, sublicense, time-share or electronically transmit or
receive Software, media or documentation. You acknowledge that Software in the
source code form remains a confidential trade secret of mikroElektronika Associates
and therefore you agree not to modify Software or attempt to reverse engineer,
decompile, or disassemble it, except and only to the extent that such activity is
expressly permitted by applicable law notwithstanding this limitation.
If you have purchased an upgrade version of Software, it constitutes a single product with the mikroElektronika Associates software that you upgraded. You may use
the upgrade version of Software only in accordance with the License Agreement.

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Introduction

LIMITED WARRANTY
Respectfully excepting the Redistributables, which are provided “as is”, without warranty of any kind, mikroElektronika Associates warrants that Software, once updated and properly used, will perform substantially in accordance with the accompanying documentation, and Software media will be free from defects in materials and
workmanship, for a period of ninety (90) days from the date of receipt. Any implied
warranties on Software are limited to ninety (90) days.
mikroElektronika Associates’ and its suppliers’ entire liability and your exclusive
remedy shall be, at mikroElektronika Associates’ option, either (a) return of the price
paid, or (b) repair or replacement of Software that does not meet mikroElektronika
Associates’ Limited Warranty and which is returned to mikroElektronika Associates
with a copy of your receipt. DO NOT RETURN ANY PRODUCT UNTIL YOU HAVE
CALLED MIKROELEKTRONIKA ASSOCIATES FIRST AND OBTAINED A RETURN
AUTHORIZATION NUMBER. This Limited Warranty is void if failure of Software has
resulted from an accident, abuse, or misapplication. Any replacement of Software
will be warranted for the rest of the original warranty period or thirty (30) days,
whichever is longer.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
MIKROELEKTRONIKA ASSOCIATES AND ITS SUPPLIERS DISCLAIM ALL
OTHER WARRANTIES AND CONDITIONS, EITHER EXPRESSED OR IMPLIED,
INCLUDED, BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
NON-INFRINGEMENT, WITH REGARD TO SOFTWARE, AND THE PROVISION
OF OR FAILURE TO PROVIDE SUPPORT SERVICES.
IN NO EVENT SHALL MIKROELEKTRONIKA ASSOCIATES OR ITS SUPPLIERS
BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL
DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES
FOR LOSS OF BUSINESS PROFITS AND BUSINESS INFORMATION, BUSINESS
INTERRUPTION, OR ANY OTHER PECUNIARY LOSS) ARISING OUT OF THE
USE OF OR INABILITY TO USE SOFTWARE PRODUCT OR THE PROVISION OF
OR
FAILURE
TO
PROVIDE
SUPPORT
SERVICES,
EVEN
IF
MIKROELEKTRONIKA ASSOCIATES HAS BEEN ADVISED OF THE POSSIBILITY
OF SUCH DAMAGES. IN ANY CASE, MIKROELEKTRONIKA ASSOCIATES’
ENTIRE LIABILITY UNDER ANY PROVISION OF THIS LICENSE AGREEMENT
SHALL BE LIMITED TO THE AMOUNT ACTUALLY PAID BY YOU FOR
SOFTWARE PRODUCT PROVIDED, HOWEVER, IF YOU HAVE ENTERED INTO
A MIKROELEKTRONIKA ASSOCIATES SUPPORT SERVICES AGREEMENT,
MIKROELEKTRONIKA ASSOCIATES’ ENTIRE LIABILITY REGARDING
SUPPORT SERVICES SHALL BE GOVERNED BY THE TERMS OF THAT
AGREEMENT.
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Introduction
HIGH RISK ACTIVITIES

Software is not fault-tolerant and is not designed, manufactured or intended for use
or resale as on-line control equipment in hazardous environments requiring fail-safe
performance, such as in the operation of nuclear facilities, aircraft navigation or
communication systems, air traffic control, direct life support machines, or weapons
systems, in which the failure of Software could lead directly to death, personal injury,
or severe physical or environmental damage (“High Risk Activities”). mikroElektronika Associates and its suppliers specifically disclaim any expressed or implied warranty of fitness for High Risk Activities.

GENERAL PROVISIONS
This statement may only be modified in writing signed by you and an authorised officer of mikroElektronika Associates. If any provision of this statement is found void
or unenforceable, the remainder will remain valid and enforceable according to its
terms. If any remedy provided is determined to have failed for its essential purpose,
all limitations of liability and exclusions of damages set forth in the Limited Warranty shall remain in effect.
This statement gives you specific legal rights; you may have others, which vary, from
country to country. mikroElektronika Associates reserves all rights not specifically
granted in this statement.
mikroElektronika
Visegradska 1A,
11000 Belgrade,
Europe.
Phone: + 381 11 36 28 830
Fax: +381 11 36 28 831
Web: www.mikroe.com
E-mail: office@mikroe.com

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Introduction

TECHNICAL SUPPORT
In case you encounter any problem, you are welcome to our support forums at
www.mikroe.com/forum/. Here, you may also find helpful information, hardware tips,
and practical code snippets. Your comments and suggestions on future development of the mikroBasic PRO for PIC are always appreciated — feel free to drop a
note or two on our Wishlist.
In our Knowledge Base www.mikroe.com/en/kb/ you can find the answers to Frequently Asked Questions and solutions to known problems. If you can not find the
solution to your problem in Knowledge Base then report it to Support Desk
www.mikroe.com/en/support/. In this way, we can record and track down bugs more
efficiently, which is in our mutual interest. We respond to every bug report and question in a suitable manner, ever improving our technical support

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Introduction
How to Register

The latest version of the mikroBasic PRO for PIC is always available for downloading from our website. It is a fully functional software libraries, examples, and comprehensive help included.
The only limitation of the free version is that it cannot generate hex output over 2
KB. Although it might sound restrictive, this margin allows you to develop practical,
working applications with no thinking of demo limit. If you intend to develop really
complex projects in the mikroBasic PRO for PIC, then you should consider the possibility of purchasing the license key.

Who Gets the License Key
Buyers of the mikroBasic PRO for PIC are entitled to the license key. After you have
completed the payment procedure, you have an option of registering your mikroBasic PRO. In this way you can generate hex output without any limitations.

How to Get License Key
After you have completed the payment procedure, start the program. Select Help ›
How to Register from the drop-down menu or click the How To Register Icon

Fill

out the registration form (figure below), select your distributor, and click the Send button.

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Introduction

This will start your e-mail client with message ready for sending. Review the information you have entered, and add the comment if you deem it necessary. Please,
do not modify the subject line.
Upon receiving and verifying your request, we will send the license key to the e-mail
address you specified in the form.

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Introduction
After Receving the License Key

The license key comes as a small autoextracting file – just start it anywhere on your
computer in order to activate your copy of compiler and remove the demo limit. You
do not need to restart your computer or install any additional components. Also,
there is no need to run the mikroBasic PRO for PIC at the time of activation.
Notes:



10

The license key is valid until you format your hard disk. In case you need to
for mat the hard disk, you should request a new activation key.
Please keep the activation program in a safe place. Every time you upgrade
the compiler you should start this program again in order to reactivate the
license.

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CHAPTER

2

mikroBasic PRO for PIC
Environment
The mikroBasic PRO for PIC is an user-friendly and intuitive environment:

11

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Environment
IDE OVERVIEW












12

The Code Editor features adjustable Syntax Highlighting, Code Folding,
Code Assistant, Parameters Assistant, Spell Checker, Auto Correct for com
mon typos and Code Templates (Auto Complete).
The Code Explorer is at your disposal for easier project management.
The Project Manager alows multiple project management
General project settings can be made in the Project Settings window
Library manager enables simple handling libraries being used in a project
The Error Window displays all errors detected during compiling and linking.
The source-level Software Simulator lets you debug executable logic stepby-step by watching the program flow.
The New Project Wizard is a fast, reliable, and easy way to create a project
Help files are syntax and context sensitive.
Like in any modern Windows application, you may customize the layout of
mikroBasic PRO for PIC to suit your needs best.

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Environment
Spell checker underlines identifiers which are unknown to the project. In this
way it helps the programmer to spot potential problems early, much before
the project is compiled.
Spell checker can be disabled by choosing the option in the Preferences
dialog (F12).

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Environment
MAIN MENU OPTIONS
Available Main Menu options are:







Related topics: Keyboard shortcuts

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Environment

FILE MENU OPTIONS
The File menu is the main entry point for manipulation with the source files.

File

Description
Open a new editor window.
Open source file for editing or image file for viewing.
Reopen recently used file.
Save changes for active editor.
Save the active source file with the different name or
change the file type.
Close active source file.
Print Preview.
Exit IDE.

Related topics: Keyboard shortcuts, File Toolbar, Managing Source Files

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Environment
EDIT MENU OPTIONS

Edit

Description
Undo last change.
Redo last change.
Cut selected text to clipboard.
Copy selected text to clipboard.
Paste text from clipboard.
Delete selected text.
Select all text in active editor.
Find text in active editor.
Find next occurence of text in active editor.
Find previous occurence of text in active editor.
Replace text in active editor.
Find text in current file, in all opened files, or in files
from desired folder.
Goto to the desired line in active editor.
Advanced Code Editor options

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Environment
Advanced »

Description
Comment selected code or put single line comment if there is no selection.
Uncomment selected code or remove single line
comment if there is no selection.
Indent selected code.
Outdent selected code.
Changes selected text case to lowercase.
Changes selected text case to uppercase.
Changes selected text case to titlercase.

Find Text
Dialog box for searching the document for the specified text. The search is performed in the direction specified. If the string is not found a message is displayed.

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Environment
Replace Text

Dialog box for searching for a text string in file and replacing it with another text string.

Find In Files
Dialog box for searching for a text string in current file, all opened files, or in files on
a disk.
The string to search for is specified in the Text to find field. If Search in directories
option is selected, The files to search are specified in the Files mask and Path fields.

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Environment

Go To Line
Dialog box that allows the user to specify the line number at which the cursor should
be positioned.

Regular expressions option
By checking this box, you will be able to advance your search, through Regular
expressions.

Related topics: Keyboard shortcuts, Edit Toolbar, Advanced Edit Toolbar

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Environment
VIEW MENU OPTIONS

File

Description
Show/Hide toolbars.
Show/Hide Software Simulator/mikroICD (In-Circuit
Debugger) debug windows.
Show/Hide Routine List in active editor.
Show/Hide Project Settings window.
Show/Hide Code Explorer window.
Show/Hide Project Manager window.
Show/Hide Library Manager window.
Show/Hide Bookmarks window.
Show/Hide Error Messages window.
Show/Hide Macro Editor window.
Show Window List window.

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Environment

TOOLBARS
File Toolbar

File Toolbar is a standard toolbar with following options:
Icon

Description
Opens a new editor window.
Open source file for editing or image file for viewing.
Save changes for active window.
Save changes in all opened windows.
Close current editor.
Close all editors.
Print Preview.

Edit Toolbar

Edit Toolbar is a standard toolbar with following options:
Icon

Description
Undo last change.
Redo last change.
Cut selected text to clipboard.
Copy selected text to clipboard.
Paste text from clipboard.

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Environment
Advanced Edit Toolbar

Advanced Edit Toolbar comes with following options:
Icon

Description
Comment selected code or put single line comment if there is no selection
Uncomment selected code or remove single line comment if there is
no selection.
Select text from starting delimiter to ending delimiter.
Go to ending delimiter.
Go to line.
Indent selected code lines.
Outdent selected code lines.
Generate HTML code suitable for publishing current source code on
the web.

Find/Replace Toolbar

Find/Replace Toolbar is a standard toolbar with following options:
Icon

Description
Find text in current editor.
Find next occurence.
Find previous occurence.
Replace text.
Find text in files.

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Environment

Project Toolbar

Project Toolbar comes with following options:
Icon

Description
New project
Open Project
Save Project
Close current project
Edit project settings.
Add existing project to project group.
Remove existing project from project group
Add File To Project
Remove File From Project

Build Toolbar
Build Toolbar comes with following options:
Icon

Description
Build current project.
Build all opened projects.
Build and program active project.
Start programmer and load current HEX file.
Open assembly code in editor.
Open listing file in editor.
View statistics for current project.

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Environment
Debugger

Debugger Toolbar comes with following options:
Icon

Description
Start Software Simulator or mikro ICD (In-Circuit Debugger).
Run/Pause debugger.
Stop debugger.
Step into.
Step over.
Step out.
Run to cursor.
Toggle breakpoint.
Toggle breakpoints.
Clear breakpoints.
View watch window
View stopwatch window

Styles Toolbar

Styles toolbar allows you to easily customize your workspace.

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Environment

Tools Toolbar

Tools Toolbar comes with following default options:
Icon

Description
Run USART Terminal
EEPROM
ASCII Chart
Seven segment decoder tool.
Optiions menu

The Tools toolbar can easily be customized by adding new tools in Options(F12)
window.
Related topics: Keyboard shortcuts, Integrated Tools, Debugger Windows

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Environment
PROJECT MENU OPTIONS

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Environment
Project

Description
Build active project.
Build all projects.
Build and program active project.
View Assembly.
Edit search paths.
Clean Project Folder
Add file to project.
Remove file from project.
Open New Project Wizard
Open existing project.
Save current project.
Edit project settings
Open project group.
Close project group.
Save active project file with the different name.
Open recently used project.
Close active project.

Related topics: Keyboard shortcuts, Project Toolbar, Creating New Project, Project
Manager, Project Settings

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Environment
RUN MENU OPTIONS

Run

Description
Start Software Simulator.
Stop debugger.
Pause Debugger.
Step Into.
Step Over.
Step Out.
Jump to interrupt in current project.
Toggle Breakpoint.
Breakpoints.
Clear Breakpoints.
Show/Hide Watch Window
Show/Hide Stopwatch Window
Toggle between Basic source and disassembly.

Related topics: Keyboard shortcuts, Debug Toolbar

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Environment

TOOLS MENU OPTIONS

Tools

Description
Run mikroElektronika Programmer
Run USART Terminal
Run EEPROM Editor
Run ASCII Chart
Run 7 Segment Display Decoder
Generate HTML code suitable for publishing
source code on the web.
Run Lcd custom character
Run Glcd bitmap editor
Run HID Terminal
Run UDP communication terminal
Run mikroBootloader
Open Options window

Related topics: Keyboard shortcuts, Tools Toolbar
MIKROELEKTRONIKA - SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

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Environment
HELP MENU OPTIONS

Help

Description
Open Help File.
Open Code Migration Document.
Check if new compiler version is available.
Open mikroElektronika Support Forums in
a default browser.
Open mikroElektronika Web Page in a
default browser.
Information on how to register
Open About window.

Related topics: Keyboard shortcuts

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Environment

KEYBOARD SHORTCUTS
Below is a complete list of keyboard shortcuts available in mikroBasic PRO for PIC IDE. You can also
view keyboard shortcuts in the Code Explorer window, tab Keyboard.
IDE Shortcuts

Ctrl+X

Cut

F1

Help

Ctrl+Y

Delete entire line

Ctrl+N

New Unit

Ctrl+Z

Undo

Ctrl+O

Open

Ctrl+Shift+Z

Redo

Ctrl+Shift+O

Open Project

Ctrl+Shift+N

Open New Project

Ctrl+Space

Code Assistant

Ctrl+K

Close Project

Ctrl+Shift+Space

Parameters Assistant

Ctrl+Shift+E

Edit Project

Ctrl+D

Find declaration

Ctrl+F9

Compile

Ctrl+E

Incremental Search

Shift+F9

Compile All

Ctrl+L

Routine List

Ctrl+F11

Compile and Program

Ctrl+G

Goto line

Shift+F4

View breakpoints

Ctrl+J

Insert Code Template

Ctrl+Shift+F5 Clear breakpoints

Ctrl+Shift+.

Comment Code

F11

Start PICFlash Programmer

Ctrl+Shift+,

Uncomment Code

F12

Preferences

Ctrl+number

Goto bookmark

Basic Editor Shortcuts

Advanced Editor Shortcuts

Ctrl+Shift+number Set bookmark

F3

Find, Find Next

Ctrl+Shift+I

Indent selection

Shift+F3

Find Previous

Ctrl+Shift+U

Unindent selection

Alt+F3

Grep Search, Find in Files

TAB

Indent selection

Ctrl+A

Select All

Shift+TAB

Unindent selection

Ctrl+C

Copy

Alt+Select

Select columns

Ctrl+F

Find

Ctrl+Alt+Select

Select columns

Ctrl+R

Replace

Ctrl+Alt+L

Ctrl+P

Print

Convert selection to
lowercase

Ctrl+S

Save unit

Ctrl+Alt+U

Convert selection to
uppercase

Ctrl+Shift+S

Save All

Ctrl+Alt+T

Convert to Titlecase

Ctrl+V

Paste

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Environment
mikroICD Debugger and Software
Simulator Shortcuts

32

F2

Jump To Interrupt

F4

Run to Cursor

F5

Toggle Breakpoint

F6

Run/Pause Debugger

F7

Step into

F8

Step over

F9

Debug

Ctrl+F2

Reset

Ctrl+F5

Add to Watch List

Ctrl+F8

Step out

Alt+D

Dissasembly view

Shift+F5

Open Watch Window

Ctrl+Shift+A

Show Advanced Breakpoints

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CHAPTER 2
mikroBasic PRO for PIC

Environment

IDE OVERVIEW
The mikroBasic PRO for PIC is an user-friendly and intuitive environment:











The Code Editor features adjustable Syntax Highlighting, Code Folding,
Code Assistant, Parameters Assistant, Spell Checker, Auto Correct for com
mon typos and Code Templates (Auto Complete).
The Code Explorer is at your disposal for easier project management.
The Project Manager alows multiple project management
General project settings can be made in the Project Settings window
Library manager enables simple handling libraries being used in a project
The Error Window displays all errors detected during compiling and linking.
The source-level Software Simulator lets you debug executable logic stepby-step by watching the program flow.
The New Project Wizard is a fast, reliable, and easy way to create a project
Help files are syntax and context sensitive.

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Environment



34

Like in any modern Windows application, you may customize the layout of
mikroBacic for PIC to suit your needs best.
Spell checker underlines identifiers which are unknown to the project. In this
way it helps the programmer to spot potential problems early, much before
the project is compiled.
Spell checker can be disabled by choosing the option in the Preferences dialog
(F12).

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CHAPTER 2
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Environment

CUSTOMIZING IDE LAYOUT
Docking Windows
You can increase the viewing and editing space for code, depending on how you
arrange the windows in the IDE.
Step 1: Click the window you want to dock, to give it focus.

Step 2: Drag the tool window from its current location. A guide diamond appears.
The four arrows of the diamond point towards the four edges of the IDE.

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Environment

Step 3: Move the pointer over the corresponding portion of the guide diamond. An
outline of the window appears in the designated area.

Step 4: To dock the window in the position indicated, release the mouse button.
Tip: To move a dockable window without snapping it into place, press CTRL while
dragging it.

Saving Layout
Once you have a window layout that you like, you can save the layout by typing the
name for the layout and pressing the Save Layout Icon

.

To set the layout select the desired layout from the layout drop-down list and click
the Set Layout Icon

.

To remove the layout from the drop-down list, select the desired layout from the list
and click the Delete Layout Icon

36

.

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Environment

Auto Hide
Auto Hide enables you to see more of your code at one time by minimizing tool windows along the edges of the IDE when not in use.
 Click the window you want to keep visible to give it focus.
 Click the Pushpin Icon

on the title bar of the window.

When an auto-hidden window loses focus, it automatically slides back to its tab on
the edge of the IDE. While a window is auto-hidden, its name and icon are visible
on a tab at the edge of the IDE. To display an auto-hidden window, move your pointer over the tab. The window slides back into view and is ready for use.
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Environment
ADVANCED CODE EDITOR

The Code Editor is advanced text editor fashioned to satisfy needs of professionals.
General code editing is the same as working with any standard text-editor, including
familiar Copy, Paste and Undo actions, common for Windows environment.

Advanced Editor Features


Adjustable Syntax Highlighting



Code Assistant



Code Folding



Parameter Assistant



Code Templates (Auto Complete)



Auto Correct for common typos



Spell Checker



Bookmarks and Goto Line



Comment / Uncomment

You can configure the Syntax Highlighting, Code Templates and Auto Correct from
the Editor Settings dialog. To access the Settings, click Tools › Options from the
drop-down menu, click the Show Options Icon

38

or press F12 key.

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Environment

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Environment
Code Assistant

If you type the first few letters of a word and then press Ctrl+Space, all valid identifiers matching the letters you have typed will be prompted in a floating panel (see
the image below). Now you can keep typing to narrow the choice, or you can select
one from the list using the keyboard arrows and Enter.

Code Folding
Code folding is IDE feature which allows users to selectively hide and display sections of a source file. In this way it is easier to manage large regions of code within
one window, while still viewing only those subsections of the code that are relevant
during a particular editing session.
While typing, the code folding symbols (- and + ) appear automatically. Use the folding symbols to hide/unhide the code subsections.

If you place a mouse cursor over the tooltip box, the collapsed text will be shown in
a tooltip style box.

40

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Environment

Parameter Assistant
The Parameter Assistant will be automatically invoked when you open parenthesis
“(” or press Shift+Ctrl+Space. If the name of a valid function precedes the parenthesis, then the expected parameters will be displayed in a floating panel. As you
type the actual parameter, the next expected parameter will become bold.

Code Templates (Auto Complete)
You can insert the Code Template by typing the name of the template (for instance,
whiles), then press Ctrl+J and the Code Editor will automatically generate a code.
You can add your own templates to the list. Select Tools › Options from the drop-down
menu, or click the Show Options Icon

and then select the Auto Complete Tab. Here

you can enter the appropriate keyword, description and code of your template.
Autocomplete macros can retreive system and project information:






%DATE% - current system date
%TIME% - current system time
%DEVICE% - device(MCU) name as specified in project settings
%DEVICE_CLOCK% - clock as specified in project settings
%COMPILER% - current compiler version

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These macros can be used in template code, see template ptemplate provided with
mikroBasic PRO for PIC installation.

Auto Correct
The Auto Correct feature corrects common typing mistakes. To access the list of recognized typos, select Tools › Options from the drop-down menu, or click the Show
Options Icon

and then select the Auto Correct Tab. You can also add your own

preferences to the list.
Also, the Code Editor has a feature to comment or uncomment the selected code by simple click of a mouse, using the Comment Icon

and Uncomment Icon

from

the Code Toolbar.

Spell Checker
The Spell Checker underlines unknown objects in the code, so they can be easily
noticed and corrected before compiling your project.
Select Tools › Options from the drop-down menu, or click the Show Options
Icon

and then select the Spell Checker Tab.

Bookmarks
Bookmarks make navigation through a large code easier. To set a bookmark, use
Ctrl+Shift+number. To jump to a bookmark, use Ctrl+number.

Goto Line
The Goto Line option makes navigation through a large code easier. Use the shortcut Ctrl+G to activate this option.

Comment / Uncomment
Also, the Code Editor has a feature to comment or uncomment the selected
code by simple click of a mouse, using the Comment Icon
ment Icon

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and Uncom-

from the Code Toolbar.

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CODE EXPLORER
The Code Explorer gives clear view of each item declared inside the source code.
You can jump to a declaration of any item by right clicking it. Also, besides the list of
defined and declared objects, code explorer displays message about first error and
it's location in code.

Following options are available in the Code Explorer:
Icon

Description
Expand/Collapse all nodes in tree.
Locate declaration in code.

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ROUTINE LIST

Routine list diplays list of routines, and enables filtering routines by name. Routine
list window can be accessed by pressing Ctrl+L.
You can jump to a desired routine by double clicking on it.

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PROJECT MANAGER
Project Manager is IDE feature which allows users to manage multiple projects.
Several projects which together make project group may be open at the same time.
Only one of them may be active at the moment.
Setting project in active mode is performed by double click on the desired project
in the Project Manager.

Following options are available in the Project Manager:

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Icon

Description
Save project Group.
Open project group.
Close the active project.
Close project group.
Add project to the project group.
Remove project from the project group.
Add file to the active project.
Remove selected file from the project.
Build the active project.
Run mikroElektronika's Flash programmer.

For details about adding and removing files from project see Add/Remove Files from
Project.
Related topics: Project Settings, Project Menu Options, File Menu Options, Project
Toolbar, Build Toolbar, Add/Remove Files from Project

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PROJECT SETTINGS WINDOW
Following options are available in the Project Settings Window:




Device - select the appropriate device from the device drop-down list.
Oscillator - enter the oscillator frequency value.
Build/Debugger Type - choose debugger type.

Related topics: Memory Model, Project Manager

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LIBRARY MANAGER

Library Manager enables simple handling libraries being used in a project. Library
Manager window lists all libraries (extencion .mcl) which are instantly stored in the
compiler Uses folder. The desirable library is added to the project by selecting check
box next to the library name.
In order to have all library functions accessible, simply press the button Check All
and all libraries will be selected. In case none library is needed in a project, press the button Clear All

and all libraries will be cleared from the project.

Only the selected libraries will be linked.

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Icon

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Description
Refresh Library by scanning files in "Uses" folder.Useful when new
libraries are added by copying files to "Uses" folder.
Rebuild all available libraries. Useful when library sources are available and
need refreshing.
Include all available libraries in current project.
No libraries from the list will be included in current project.
Restore library to the state just before last project saving.

Related topics: mikroBasic PRO for PIC Libraries, Creating New Library

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ERROR WINDOW

In case that errors were encountered during compiling, the compiler will report them
and won’t generate a hex file. The Error Window will be prompted at the bottom of
the main window by default.
The Error Window is located under message tab, and displays location and type of
errors the compiler has encountered. The compiler also reports warnings, but these
do not affect the output; only errors can interefere with the generation of hex.

Double click the message line in the Error Window to highlight the line where the
error was encountered.
Related topics: Error Messages

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STATISTICS
After successful compilation, you can review statistics of your code. Click the Statistics Icon

.

Memory Usage Windows
Provides overview of RAM and ROM usage in the form of histogram.

RAM Memory Usage
Displays RAM memory usage in a pie-like form.

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Used RAM Locations
Displays used RAM memory locations and their names.

SFR Locations
Displays list of used SFR locations.

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ROM Memory Usage
Displays ROM memory space usage in a pie-like form.

ROM Memory Constants
Displays ROM memory constants and their addresses.

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Functions Sorted By Name

Sorts and displays functions by their addresses, symbolic names, and unique
assembler names.

Functions Sorted By Size
Sorts and displays functions by their size, in the ascending order.

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Functions Sorted By Addresses
Sorts and displays functions by their size, in the ascending order.

Functions Sorted By Name Chart
Sorts and displays functions by their names in a chart-like form.

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Functions Sorted By Size Chart
Sorts and displays functions by their sizes in a chart-like form

Functions Sorted By Addresses Chart
Sorts and displays functions by their addresses in a chart-like form.

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Function Tree
Displays Function Tree with the relevant data for each function.

Memory Summary
Displays summary of RAM and ROM memory in a pie-like form.

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INTEGRATED TOOLS
USART Terminal

The mikroBasic PRO for PIC includes the USART communication terminal for
RS232 communication. You can launch it from the drop-down menu Tools › USART
Terminal or by clicking the USART Terminal Icon

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from Tools toolbar.

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EEPROM Editor
The EEPROM Editor is used for manipulating MCU's EEPROM memory. You can
launch it from the drop-down menu Tools › EEPROM Editor. When Use this
EEPROM definition is checked compiler will generate Intel hex file
project_name.ihex that contains data from EEPROM editor.
When you run mikroElektronika programmer software from mikroBasic PRO for PIC
IDE - project_name.hex file will be loaded automatically while ihex file must be
loaded manually.

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ASCII Chart

The ASCII Chart is a handy tool, particularly useful when working with Lcd display.
You can launch it from the drop-down menu Tools › ASCII chart or by clicking the
View ASCII Chart Icon
from Tools toolbar.

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Seven Segment Decoder
The Seven Segment Display Decoder is a convenient visual panel which returns
decimal/hex value for any viable combination you would like to display on 7seg.
Click on the parts of 7 segment image to get the requested value in the edit boxes.
You can launch it from the drop-down menu Tools › Seven Segment Convertor or
by clicking the Seven Segment Icon
from Tools toolbar.

Lcd Custom Character
mikroBasic PRO for PIC includes the Lcd Custom Character. Output is mikroBasic
PRO for PIC compatible code. You can launch it from the drop-down menu Tools ›
Lcd Custom Character.

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Graphic LCD Bitmap Editor

The mikroBasic PRO for PIC includes the Graphic Lcd Bitmap Editor. Output is the
mikroBasic PRO for PIC compatible code. You can launch it from the drop-down
menu Tools › Glcd Bitmap Editor.

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HID Terminal
The mikroBasic PRO for PIC includes the HID communication terminal for USB
communication. You can launch it from the drop-down menu Tools › HID Terminal.

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Udp Terminal

The mikroBasic PRO for PIC includes the UDP Terminal. You can launch it from the
drop-down menu Tools › UDP Terminal.

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MIKROBOOTLOADER
What is a Bootloader
(From Microchip’s document AN732) The PIC16F87X family of microcontrollers has
the ability to write to their own program memory. This feature allows a small bootloader program to receive and write new firmware into memory. In its most simple
form, the bootloader starts the user code running, unless it finds that new firmware
should be downloaded. If there is new firmware to be downloaded, it gets the data
and writes it into program memory. There are many variations and additional features that can be added to improve reliability and simplify the use of the bootloader.
Note: mikroBootloader can be used only with PIC MCUs that support flash write.

How to use mikroBootloader
1. Load the PIC with the appropriate hex file using the conventional programming
techniques (e.g. for PIC16F877A use p16f877a.hex).
2. Start mikroBootloader from the drop-down menu Tools › Bootoader.
3. Click on Setup Port and select the COM port that will be used. Make sure
that BAUD is set to 9600 Kpbs.
4. Click on Open File and select the HEX file you would like to upload.
5. Since the bootcode in the PIC only gives the computer 4-5 sec to connect, you
should reset the PIC and then click on the Connect button within 4-5 seconds.
6. The last line in then history window should now read “Connected”.
7. To start the upload, just click on the Start Bootloader button.
8. Your program will written to the PIC flash. Bootloader will report an errors that
may occur.
9. Reset your PIC and start to execute.

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Features

The boot code gives the computer 5 seconds to get connected to it. If not, it starts
running the existing user code. If there is a new user code to be downloaded, the
boot code receives and writes the data into program memory.
The more common features a bootloader may have are listed below:
 Code at the Reset location.
 Code elsewhere in a small area of memory.
 Checks to see if the user wants new user code to be loaded.
 Starts execution of the user code if no new user code is to be loaded.
 Receives new user code via a communication channel if code is to be loaded.
 Programs the new user code into memory.

Integrating User Code and Boot Code
The boot code almost always uses the Reset location and some additional program
memory. It is a simple piece of code that does not need to use interrupts; therefore,
the user code can use the normal interrupt vector at 0x0004. The boot code must
avoid using the interrupt vector, so it should have a program branch in the address
range 0x0000 to 0x0003. The boot code must be programmed into memory using
conventional programming techniques, and the configuration bits must be programmed at this time. The boot code is unable to access the configuration bits,
since they are not mapped into the program memory space.

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Macro Editor
A macro is a series of keystrokes that have been 'recorded' in the order performed.
A macro allows you to 'record' a series of keystrokes and then 'playback', or repeat,
the recorded keystrokes.

The Macro offers the following commands:
Icon

Description
Starts 'recording' keystrokes for later playback.
Stops capturing keystrokesthat was started when the Start
Recordig command was selected.
Allows a macro that has been recorded to be replayed.
New macro.
Delete macro.

Related topics: Advanced Code Editor, Code Templates

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Options

Options menu consists of three tabs: Code Editor, Tools and Output settings

Code editor
The Code Editor is advanced text editor fashioned to satisfy needs of professionals.

Tools
The mikroBasic PRO for PIC includes the Tools tab, which enables the use of shortcuts to external programs, like Calculator or Notepad.
You can set up to 10 different shortcuts, by editing Tool0 - Tool9.

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Output settings
By modifying Output Settings, user can configure the content of the output files.
You can enable or disable, for example, generation of ASM and List file.
Also, user can choose optimization level, and compiler specific settings, which
include case sensitivity, dynamic link for string literals setting (described in mikroBasic PRO for PIC specifics).
Build all files as library enables user to use compiled library (*.mcl) on any PIC
MCU (when this box is checked), or for a selected PIC MCU (when this box is left
unchecked).
For more information on creating new libraries, see Creating New Library.

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REGULAR EXPRESSIONS
Introduction

Regular Expressions are a widely-used method of specifying patterns of text to
search for. Special metacharacters allow you to specify, for instance, that a particular string you are looking for, occurs at the beginning, or end of a line, or contains n
recurrences of a certain character.

Simple matches
Any single character matches itself, unless it is a metacharacter with a special
meaning described below. A series of characters matches that series of characters
in the target string, so the pattern "short" would match "short" in the target string.
You can cause characters that normally function as metacharacters or escape
sequences to be interpreted by preceding them with a backslash "\".
For instance, metacharacter "^" matches beginning of string, but "\^" matches
character "^", and "\\" matches "\", etc.
Examples :
unsigned matches string 'unsigned'
\^unsigned matches string '^unsigned'

Escape sequences
Characters may be specified using a escape sequences: "\n" matches a newline,
"\t" a tab, etc. More generally, \xnn, where nn is a string of hexadecimal digits,
matches the character whose ASCII value is nn.
If you need wide(Unicode)character code, you can use '\x{nnnn}', where 'nnnn' one or more hexadecimal digits.
\xnn - char with hex code nn
\x{nnnn)- char with hex code nnnn (one byte for plain text and two bytes

for Unicode)
- tab (HT/TAB), same as \x09
- newline (NL), same as \x0a
- car.return (CR), same as \x0d
- form feed (FF), same as \x0c
- alarm (bell) (BEL), same as \x07
- escape (ESC) , same as \x1b

\t
\n
\r
\f
\a
\e

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Examples:
unsigned\x20int matches 'unsigned int' (note space in the middle)
\tunsigned matches 'unsigned' (predecessed by tab)

Character classes
You can specify a character class, by enclosing a list of characters in [], which
will match any of the characters from the list. If the first character after the "[" is
"^", the class matches any character not in the list.
Examples:
count[aeiou]r finds strings 'countar', 'counter', etc. but not
'countbr', 'countcr', etc.
count[^aeiou]r finds strings 'countbr', 'countcr', etc. but not
'countar', 'counter', etc.

Within a list, the "-" character is used to specify a range, so that a-z represents all
characters between "a" and "z", inclusive.
If you want "-" itself to be a member of a class, put it at the start or end of the list,
or escape it with a backslash.
If you want ']', you may place it at the start of list or escape it with a backslash.
Examples:
[-az] matches 'a', 'z' and '-'
[az-] matches 'a', 'z' and '-'
[a\-z] matches 'a', 'z' and '-'
[a-z] matches all twenty six small characters from 'a' to 'z'
[\n-\x0D] matches any of #10,#11,#12,#13.
[\d-t] matches any digit, '-' or 't'.
[]-a] matches any char from ']'..'a'.

Metacharacters
Metacharacters are special characters which are the essence of regular expressions.There are different types of metacharacters, described below.

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Metacharacters - Line separators
^ - start of line
$ - end of line
\A - start of text
\Z - end of text
. - any character in line

Examples:
^PORTA - matches string ' PORTA ' only if it's at the beginning of line
PORTA$ - matches string ' PORTA ' only if it's at the end of line
^PORTA$ - matches string ' PORTA ' only if it's the only string in line
PORT.r - matches strings like 'PORTA', 'PORTB', 'PORT1' and so on

The "^" metacharacter by default is only guaranteed to match beginning of the input
string/text, and the "$" metacharacter only at the end. Embedded line separators will
not be matched by ^" or "$".
You may, however, wish to treat a string as a multi-line buffer, such that the "^" will
match after any line separator within the string, and "$" will match before any line
separator.
Regular expressons works with line separators as recommended at
www.unicode.org ( http://www.unicode.org/unicode/reports/tr18/ ):

Metacharacters - Predefined classes
\w
\W
\d
\D
\s
\S

-

an alphanumeric character (including "_")
a nonalphanumeric
a numeric character
a non-numeric
any space (same as [\t\n\r\f])
a non space

You may use \w, \d and \s within custom character classes.

Example:
routi\de - matches strings like 'routi1e', 'routi6e' and so on, but not
'routine', 'routime' and so on.

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Metacharacters - Word boundaries
A word boundary ("\b") is a spot between two characters that has a "\w" on one
side of it and a "\W" on the other side of it (in either order), counting the imaginary
characters off the beginning and end of the string as matching a "\W".
\b - match a word boundary)
\B - match a non-(word boundary)

Metacharacters - Iterators
Any item of a regular expression may be followed by another type of metacharacters - iterators. Using this metacharacters,you can specify number of occurences of
previous character, metacharacter or subexpression.
* - zero or more ("greedy"), similar to {0,}
+ - one or more ("greedy"), similar to {1,}
? - zero or one ("greedy"), similar to {0,1}
{n} - exactly n times ("greedy")
{n,} - at least n times ("greedy")
{n,m} - at least n but not more than m times ("greedy")
*? - zero or more ("non-greedy"), similar to {0,}?
+? - one or more ("non-greedy"), similar to {1,}?
?? - zero or one ("non-greedy"), similar to {0,1}?
{n}? - exactly n times ("non-greedy")
{n,}? - at least n times ("non-greedy")
{n,m}? - at least n but not more than m times ("non-greedy")

So, digits in curly brackets of the form, {n,m}, specify the minimum number of times
to match the item n and the maximum m. The form {n} is equivalent to {n,n} and
matches exactly n times. The form {n,} matches n or more times. There is no limit
to the size of n or m, but large numbers will chew up more memory and slow down
execution.
If a curly bracket occurs in any other context, it is treated as a regular character.

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Examples:

count.*r ß- matches strings like 'counter', 'countelkjdflkj9r' and

'countr'
count.+r - matches strings like 'counter', 'countelkjdflkj9r' but not
'countr'
count.?r - matches strings like 'counter', 'countar' and 'countr' but not
'countelkj9r'
counte{2}r - matches string 'counteer'
counte{2,}r - matches strings like 'counteer', 'counteeer', 'counteeer' etc.
counte{2,3}r - matches strings like 'counteer', or 'counteeer' but not
'counteeeer'

A little explanation about "greediness". "Greedy" takes as many as possible, "nongreedy" takes as few as possible.
For example, 'b+' and 'b*' applied to string 'abbbbc' return 'bbbb', 'b+?' returns 'b',
'b*?' returns empty string, 'b{2,3}?' returns 'bb', 'b{2,3}' returns 'bbb'.

Metacharacters - Alternatives
You can specify a series of alternatives for a pattern using "|" to separate them, so
that bit|bat|bot will match any of "bit", "bat", or "bot" in the target string (as
would b(i|a|o)t). The first alternative includes everything from the last pattern
delimiter ("(", "[", or the beginning of the pattern) up to the first "|", and the last
alternative contains everything from the last "|" to the next pattern delimiter. For this
reason, it's common practice to include alternatives in parentheses, to minimize
confusion about where they start and end.
Alternatives are tried from left to right, so the first alternative found for which the
entire expression matches, is the one that is chosen. This means that alternatives
are not necessarily greedy. For example: when matching rou|rout against "routine", only the "rou" part will match, as that is the first alternative tried, and it successfully matches the target string (this might not seem important, but it is important
when you are capturing matched text using parentheses.) Also remember that "|" is
interpreted as a literal within square brackets, so if you write [bit|bat|bot], you're
really only matching [biao|].
Examples:
rou(tine|te) - matches strings 'routine' or 'route'.

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Metacharacters - Subexpressions
The bracketing construct ( ... ) may also be used for define regular subexpressions. Subexpressions are numbered based on the left to right order of their opening parenthesis. First subexpression has number '1'
Examples:
(int){8,10} matches strings which contain 8, 9 or 10 instances of the 'int'
routi([0-9]|a+)e matches 'routi0e', 'routi1e' , 'routine', 'routinne',
'routinnne' etc.

Metacharacters - Backreferences
Metacharacters \1 through \9 are interpreted as backreferences. \ matches previously matched subexpression #.
Examples:
(.)\1+ matches 'aaaa' and 'cc'.
(.+)\1+ matches 'abab' and '123123'
(['"]?)(\d+)\1 matches "13" (in double quotes), or '4' (in single quotes)
or 77 (without quotes) etc

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mikroBasic PRO for PIC COMMAND LINE OPTIONS
Usage: mBPIC.exe [- [-]] [ [-]] [-]]
Infile can be of *.mpas and *.mcl type.
The following parameters and some more (see manual) are valid:
 -P : MCU for which compilation will be done.
 -FO : Set oscillator.
 -SP : Add directory to the search path list.
 -N : Output files generated to file path specified by filename.
 -B : Save compiled binary files (*.mcl) to 'directory'.
 -O : Miscellaneous output options.
 -DBG : Generate debug info.
 -E : Set memory model opts ( S | C | L (small, compact, large)).
 -L : Check and rebuild new libraries.
 -C : Turn on case sensitivity.
Example:
mBPIC.exe -MSF -DBG -pPIC16F887 -C -O11111114 -fo8 -N"C:\Lcd\Lcd.mcpav"
-SP"C:\Program Files\Mikroelektronika\mikroBasic PRO for PIC\Defs\"
-SP"C:\Program Files\Mikroelektronika\mikroBasic PRO for
PIC\Uses\LTE64KW\" - SP"C:\Lcd\"
"Lcd.mbas"
"__Lib_Math.mcl"
"__Lib_MathDouble.mcl"
"__Lib_System.mcl" "__Lib_Delays.mcl" "__Lib_LcdConsts.mcl"
"__Lib_Lcd.mcl"
Parameters used in the example:
 -MSF : Short Message Format; used for internal purposes by IDE.
 -DBG : Generate debug info.
 -pPIC16F887 : MCU PIC16F887 selected.
 -C : Turn on case sensitivity.
 -O11111114 : Miscellaneous output options.
 -fo8 : Set oscillator frequency [in MHz].
 -N"C:\Lcd\Lcd.mcpav" -SP"C:\Program Files\Mikroelektronika
\mikroBasic PRO for PIC\defs\" : Output files generated to file path
specified by file name.
 -SP"C:\Program Files\Mikroelektronika\mikroBasic PRO for
PIC\defs\" : Add directory to the search path list.
 -SP"C:\Program Files\Mikroelektronika\mikroBasic PRO for
PIC\uses\" : Add directory to the search path list.
 -SP"C:\Lcd\" : Add directory to the search path list.


76

"Lcd.mbas" "__Lib_Math.mcl" "__Lib_MathDouble.mcl"
"__Lib_System.mcl" "__Lib_Delays.mcl"
"__Lib_LcdConsts.mcl"
"__Lib_Lcd.mcl" : Specify input files.

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Environment

PROJECTS
The mikroBasic PRO for PIC organizes applications into projects, consisting of a
single project file (extension .mcpav) and one or more source files (extension ).
mikroBasic PRO for PIC IDE allows you to manage multiple projects (see Project
Manager). Source files can be compiled only if they are part of a project.

The project file contains the following information:
 project name and optional description,
 target device,
 device flags (config word),
 device clock,
 list of the project source files with paths,
 image files,
 other files.
Note that the project does not include files in the same way as preprocessor does,
see Add/Remove Files from Project.

New Project
The easiest way to create a project is by means of the New Project Wizard, dropdown menu Project > New Project or by clicking the New Project Icon
from Project Toolbar.

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New Project Wizard Steps
Start creating your New project, by clicking Next button:

Step One - Select the device from the device drop-down list.

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Step Two- enter the oscillator frequency value.

Step Three - Specify the location where your project will be saved.

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Step Four - Add project file to the project if they are avaiable at this point. You can
always add project files later using Project Manager.

Step Five - Click Finish button to create your New Project:

Related topics: Project Manager, Project Settings

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CUSTOMIZING PROJECTS
You can change basic project settings in the Project Settings window. You can
change chip, oscillator frequency, and memory model. Any change in the Project
Setting Window affects currently active project only, so in case more than one project is open, you have to ensure that exactly the desired project is set as active one
in the Project Manager. Also, you can change configuration bits of the selected chip
in the Edit Project window.

Managing Project Group
mikroBasic PRO for PIC IDE provides covenient option which enables several projects to be open simultaneously. If you have several projects being connected in
some way, you can create a project group.
The project group may be saved by clicking the Save Project Group Icon

from

the Project Manager window. The project group may be reopend by clicking the
Open Project Group Icon

. All relevant data about the project group is stored

in the project group file (extension .mpg)

Add/Remove Files from Project
The project can contain the following file types:






.mpas source files
.mcl binary files
.pld project level defines files (future upgrade)

image files
.hex, .asm and .lst files, see output files. These files can not be added

or removed from project.
 other files

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The list of relevant source files is stored in the project file (extension .mbpav).
To add source file to the project, click the Add File to Project Icon
Each added source file must be self-contained, i.e. it must have all necessary definitions after preprocessing.
To remove file(s) from the project, click the Remove File from Project Icon
Note: For inclusion of the module files, use the include clause. See File Inclusion
for more information.

Project Level Defines
Project Level Defines (.pld) files can also be added to project. Project level define
files enable you to have defines that are visible in all source files in the project. One
project may contain several pld files. A file must contain one definition per line, for
example:
ANALOG
DEBUG
TEST

There are some predefined project level defines. See predefined project level
defines
Related topics: Project Manager, Project Settings

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SOURCE FILES
Source files containing Basic code should have the extension .mbas. The list of
source files relevant to the application is stored in project file with extension .mbpav,
along with other project information. You can compile source files only if they are
part of the project.

Managing Source Files
Creating new source file
To create a new source file, do the following:
1. Select File › New Unit from the drop-down menu, or press Ctrl+N, or click the
New File Icon

from the File Toolbar.

2. A new tab will be opened. This is a new source file. Select File › Save from
the drop-down menu, or press Ctrl+S, or click the Save File Icon

from

the File Toolbar and name it as you want.
If you use the New Project Wizard, an empty source file, named after the project with
extension .mbas, will be created automatically. The mikroBasic PRO for PIC does
not require you to have a source file named the same as the project, it’s just a matter of convenience.

Opening an existing file
1. Select File › Open from the drop-down menu, or press Ctrl+O, or click the
Open File Icon

from the File Toolbar. In Open Dialog browse to the loca

tion of the file that you want to open, select it and click the Open button.
2. The selected file is displayed in its own tab. If the selected file is already open,
its current Editor tab will become active.

Printing an open file
1. Make sure that the window containing the file that you want to print is the
active window.
2. Select File › Print from the drop-down menu, or press Ctrl+P.
3. In the Print Preview Window, set a desired layout of the document and click
the OK button. The file will be printed on the selected printer.

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Saving file

1. Make sure that the window containing the file that you want to save is the
active window.
2. Select File › Save from the drop-down menu, or press Ctrl+S, or click the
Save File Icon
from the File Toolbar.

Saving file under a different name
1. Make sure that the window containing the file that you want to save is the
active window.
2. Select File › Save As from the drop-down menu. The New File Name dialog
will be displayed.
3. In the dialog, browse to the folder where you want to save the file.
4. In the File Name field, modify the name of the file you want to save.
5. Click the Save button.

Closing file
1. Make sure that the tab containing the file that you want to close is the active tab.
2. Select File › Close from the drop-down menu, or right click the tab of the file
that you want to close and select Close option from the context menu.
3. If the file has been changed since it was last saved, you will be prompted to
save your changes.
Related topics:File Menu, File Toolbar, Project Manager, Project Settings,

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CLEAN PROJECT FOLDER
This menu gives you option to choose which files from your current project you want
to delete.
Files marked in bold can be easily recreated by building a project. Other files should
be marked for deletion only with a great care, because IDE cannot recover them.

Related topics: Customizing Projects

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COMPILATION

When you have created the project and written the source code, it's time to compile
it. Select Project › Build from the drop-down menu, or click the Build Icon

from

the Project Toolbar. If more more than one project is open you can compile all open
projects by selecting Project › Build All from the drop-down menu, or click the Build
All Icon

from the Project Toolbar.

Progress bar will appear to inform you about the status of compiling. If there are
some errors, you will be notified in the Error Window. If no errors are encountered,
the mikroBasic PRO for PIC will generate output files.

Output Files
Upon successful compilation, the mikroBasic PRO for PIC will generate output files
in the project folder (folder which contains the project file .mbpav). Output files are
summarized in the table below:
Format

Description

File Type

Intel HEX

Intel style hex records. Use this file to program
PIC MCU

.hex

Binary

mikro Compiled Library. Binary distribution of
application that can be included in other projects.

.mcl

List File

Overview of PIC memory allotment: instruction
addresses, registers, routines and labels.

.lst

Assembler File

Human readable assembly with symbolic names,
extracted from the List File.

.asm

Assembly View
After compiling the program in the mikroBasic PRO for PIC, you can click the View
Assembly icon

or select Project › View Assembly from the drop-down menu

to review the generated assembly code (.asm file) in a new tab window. Assembly
is human-readable with symbolic names.
Related topics:Project Menu, Project Toolbar, Error Window, Project Manager, Project Settings

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ERROR MESSAGES
Compiler Error Messages:









































"%s" is not valid identifier.
Unknown type "%s".
IIdentifier "%s" was not declared.
Syntax error: Expected "%s" but "%s" found.
Argument is out of range "%s".

Syntax error in additive expression.
File "%s" not found.
Invalid command "%s".
Not enough parameters.
Too many parameters.
Too many characters.
Actual and formal parameters must be identical.
Invalid ASM instruction: "%s".
Identifier "%s" has been already declared in "%s".
Syntax error in multiplicative expression.
Definition file for "%s" is corrupted.
ORG directive is currently supported for interrupts only.
Not enough ROM.
Not enough RAM.
External procedure "%s" used in "%s" was not found.
Internal error: "%s".
Unit cannot recursively use itself.
"%s" cannot be used out of loop.
Actual and formal parameters do not match ("%s" to "%s").
Constant cannot be assigned to.
Constant array must be declared as global.
Incompatible types ("%s" to "%s").
Too many characters ("%s").
Soft_Uart cannot be initialized with selected baud rate/device clock.
Main label cannot be used in modules.
Break/Continue cannot be used out of loop.
Preprocessor Error: "%s".
Expression is too complicated.
Duplicated label "%s".
Complex type cannot be declared here.
Record is empty.
Unknown type "%s".
File not found "%s".
Constant argument cannot be passed by reference.
Pointer argument cannot be passed by reference.

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Operator "%s" not applicable to these operands "%s".
Exit cannot be called from the main block.
Complex type parameter must be passed by reference.
Error occured while compiling "%s".
Recursive types are not allowed.
Adding strings is not allowed, use "strcat" procedure instead.
Cannot declare pointer to array, use pointer to structure which has array
field.
Return value of the function "%s" is not defined.
Assignment to for loop variable is not allowed.
"%s" is allowed only in the main program.
Start address of "%s" has already been defined.
Simple constant cannot have a fixed address.
Invalid date/time format.
Invalid operator "%s".
File "%s" is not accessible.
Forward routine "%s" is missing implementation.
";" is not allowed before "else".
Not enough elements: expected "%s", but "%s" elements found.
Too many elements: expected "%s" elements.
"external" is allowed for global declarations only.
Destination size ("%s") does not match source size ("%s").
Routine prototype is different from previous declaration.
Division by zero.
Uart module cannot be initialized with selected baud rate/device clock.
"%s" cannot be of "%s" type.
Array of "%s" can not be declared.
Incomplete variable declaration: "%s".
Recursive build of units is not allowed (""%s"").
Object must be smaller than 64kb in size: ""%s"".
Index out of bounds.
With statment cannot be used with this argument ""%s"".
Reset directive is available only on P18 family.

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Warning Messages:















Variable "%s" is not initialized.
Return value of the function "%s" is not defined.
Identifier "%s" overrides declaration in unit "%s".
Generated baud rate is %s bps (error = %s percent).
Result size may exceed destination array size.
Infinite loop.
Implicit typecast performed from "%s" to "%s".
Implicit typecast of integral value to pointer.
Library "%s" was not found in search path.
Interrupt context saving has been turned off.
Source size (%s) does not match destination size (%s).
Aggregate padded with zeros (%s) in order to match declared size (%s).
Suspicious pointer conversion.
Source size may exceed destination size.

Hint Messages:






Constant "%s" has been declared, but not used.
Variable "%s" has been declared, but not used.
Unit "%s" has been recompiled.
Variable "%s" has been eliminated by optimizer.
Compiling unit "%s".

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SOFTWARE SIMULATOR OVERVIEW

The Source-level Software Simulator is an integral component of the mikroBasic
PRO for PIC environment. It is designed to simulate operations of the PIC MCUs
and assist the users in debugging Basic code written for these devices.
Upon completion of writing your program, choose Release build Type in the Project
Settings window:

After you have successfully compiled your project, you can run the Software Simulator by selecting Run › Start Debugger from the drop-down menu, or by clicking
the Start Debugger Icon

from the Debugger Toolbar. Starting the Software Sim-

ulator makes more options available: Step Into, Step Over, Step Out, Run to Cursor,
etc. Line that is to be executed is color highlighted (blue by default).
Note: The Software Simulator simulates the program flow and execution of instruction lines, but it cannot fully emulate 8051 device behavior, i.e. it doesn’t update
timers, interrupt flags, etc.

Breakpoints Window
The Breakpoints window manages the list of currently set breakpoints in the project.
Doubleclicking the desired breakpoint will cause cursor to navigate to the corresponding location in source code.

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Watch Window
The Software Simulator Watch Window is the main Software Simulator window
which allows you to monitor program items while simulating your program. To show
the Watch Window, select View › Debug Windows › Watch from the drop-down
menu.
The Watch Window displays variables and registers of the MCU, along with their
addresses and values.
There are two ways of adding variable/register to the watch list:


by its real name (variable's name in "Basic" code). Just select desired
variable/register from Select variable from list drop-down menu and click
the Add Butto



.

by its name ID (assembly variable name). Simply type name ID of the
variable/register you want to display into Search the variable by assemby
name box and click the Add Button



.

Viables can also be removed from the Watch window, just select the vari
able that you want to remove and then click the Remove Button
.




Add All Button
Remove All Button

adds all variables.
removes all variables.

You can also expand/collapse complex variables, i.e. struct type variables, strings...
Values are updated as you go through the simulation. Recently changed items are
colored red.
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Double clicking a variable or clicking the Properties Button

opens

the Edit Value window in which you can assign a new value to the selected
variable/register. Also, you can choose the format of variable/register representation
between decimal, hexadecimal, binary, float or character. All representations except
float are unsigned by default. For signed representation click the check box next to
the Signed label.
An item's value can be also changed by double clicking item's value field and typing
the new value directly.

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View RAM Window
The Software Simulator RAM Window is available from the drop-down menu, View
› Debug Windows › View RAM.
The View RAM Window displays the map of PIC’s RAM, with recently changed
items colored red.

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Stopwatch Window

The Software Simulator Stopwatch Window is available from the drop-down menu,
View › Debug Windows › Stopwatch.
The Stopwatch Window displays a current count of cycles/time since the last Software Simulator action. Stopwatch measures the execution time (number of cycles)
from the moment Software Simulator has started and can be reset at any time. Delta
represents the number of cycles between the lines where Software Simulator action
has started and ended.
Note: The user can change the clock in the Stopwatch Window, which will recalculate values for the latest specified frequency. Changing the clock in the Stopwatch
Window does not affect actual project settings – it only provides a simulation.

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SOFTWARE SIMULATOR OPTIONS
Name

Description

Function Key

Start Debugger Start Software Simulator.

[F9]

Run/Pause
Debugger

Run or pause Software Simulator.

[F6]

Stop Debugger

Stop Software Simulator.

Toggle
Breakpoints

Toggle breakpoint at the current cursor position. To view all breakpoints, select Run >
View Breakpoints from the drop–down menu.
Double clicking an item in the Breakpoints
Window List locates the breakpoint.

[F5]

Run to cursor

Execute all instructions between the current
instruction and cursor position.

[F4]

Step Into

Execute the current Basic (single or multi–cycle)
instruction, then halt. If the instruction is a routine
call, enter the routine and halt at the first instruction following the call.

[F7]

Step Over

Execute the current Basic (single or
multi–cycle) instruction, then halt.

[F8]

Step Out

Execute all remaining instructions in the current routine, return and then halt.

Toolbar
Icon

[Ctrl+F2]

[Ctrl+F8]

Related topics: Run Menu, Debug Toolbar

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CREATING NEW LIBRARY

mikroBasic PRO for PIC allows you to create your own libraries. In order to create
a library in mikroBasic PRO for PIC follow the steps bellow:
1. Create a new Basic source file, see Managing Source Files
2. Save the file in the compiler's Uses folder:
DriveName:\Program Files\Mikroelektronika\mikroBasic PRO
for PIC\Uses\P16\
DriveName:\Program Files\Mikroelektronika\mikroBasic PRO
for PIC\Uses\P18\

If you are creating library for PIC16 MCU family the file should be saved in P16 folder.
If you are creating library for PIC18 MCU family the file should be saved in P18 folder.
If you are creating library for PIC16 and PIC18 MCU families the file should be
saved in both folders.
3. Write a code for your library and save it.
4. Add _Lib_Example file in some project, see Project Manager. Recompile the project.
If you wish to use this library for all MCUs, then you should go to Tools ›
Options › Output settings, and check Build all files as library box.
This will build libraries in a common form which will work with all MCUs. If this
box is not checked, then the library will be built for selected MCU.
Bear in mind that compiler will report an error if a library built for specific MCU
is used for another one.
5.Compiled file __Lib_Example.mcl should appear in ...\mikroBasic PRO
for PIC\Uses\P16\ folder.
6.Open the definition file for the MCU that you want to use. This file is placed in
the compiler's Defs folder:
DriveName:\Program Files\Mikroelektronika\mikroBasic PRO
for PIC\Defs\

and it is named MCU_NAME.mlk, for example P16F887.mlk
7.Add the the following segment of code to  node of the definition
file (definition file is in XML format):

Example_Library
__Lib_Example
REGULAR


8. Add Library to mlk file for each MCU that you want to use with your library.
9. Click Refresh button in Library Manager
10.Example_Library should appear in the Library manager window.

Multiple Library Versions
Library Alias represents unique name that is linked to corresponding Library .mcl
file. For example UART library for 16F887 is different from UART library for 18F4520
MCU. Therefore, two different UART Library versions were made, see mlk files for
these two MCUs. Note that these two libraries have the same Library Alias (UART)
in both mlk files. This approach enables you to have identical representation of
UART library for both MCUs in Library Manager.
Related topics: Library Manager, Project Manager, Managing Source Files

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3

MIKROICD (IN-CIRCUIT DEBUGGER)

mikroICD is highly effective tool for Real-Time debugging on hardware level. ICD
debugger enables you to execute a mikroBasic PRO for PIC program on a host PIC
microcontroller and view variable values, Special Function Registers (SFR), memory and EEPROM as the program is running.

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If you have appropriate hardware and software for using mikroICD then you have to
upon completion of writing your program to choose between Release build Type or
ICD Debug build type.

You can run the mikroICD by selecting Run › Debug from the drop-down menu, or
by clicking Debug Icon
. Starting the Debugger makes more options available:
Step Into, Step Over, Run to Cursor, etc. Line that is to be executed is color highlighted (blue by default). There is also notification about program execution and it
can be found on Watch Window (yellow status bar). Note that some functions take
time to execute, so running of program is indicated on Watch Window.

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mikroICD Debugger Optional
Name

Description

Function Key

+Debug

Start Software Simulator.

[F9]

Run/Pause
Debugger

Run or pause Software Simulator.

[F6]

Toggle
Breakpoints

Toggle breakpoint at the current cursor position.
To view all breakpoints, select Run > View Breakpoints from the drop–down menu. Double clicking
an item in the window list locates the breakpoint.

[F5]

Run to cursor

Execute all instructions between the current
instruction and cursor position.

[F4]

Step Into

Execute the current C (single– or multi–cycle)
instruction, then halt. If the instruction is a routine call,
enter the routine and halt at the first instruction following the call.

[F7]

Step Over

Execute the current C (single– or multi–cycle)
instruction, then halt. If the instruction is a routine
call, skip it and halt at the first instruction following the call.

[F8]

Flush RAM

Disassembly
View

Flushes current PIC RAM. All variable values will
be changed according to values from watch window.
Toggle between disassembly and Basic source
view.

N/A

[Alt+D]

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MIKROICD DEBUGGER EXAMPLE
Here is a step by step mikroICD Debugger Example.

First you have to write a program. We will show how mikroICD works using this
example:
program Lcd_Test
dim
dim
dim
dim
dim
dim

LCD_RS
LCD_EN
LCD_D4
LCD_D5
LCD_D6
LCD_D7

as
as
as
as
as
as

sbit
sbit
sbit
sbit
sbit
sbit

at
at
at
at
at
at

dim
dim
dim
dim
dim
dim

LCD_RS_Direction
LCD_EN_Direction
LCD_D4_Direction
LCD_D5_Direction
LCD_D6_Direction
LCD_D7_Direction

RB4_bit
RB5_bit
RB0_bit
RB1_bit
RB2_bit
RB3_bit

as
as
as
as
as
as

sbit
sbit
sbit
sbit
sbit
sbit

at
at
at
at
at
at

TRISB4_bit
TRISB5_bit
TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit

dim text as char[17]
i
as byte
main:
PORTB = 0
TRISB = 0
ANSEL = 0
ANSELH = 0
text = "mikroElektronika"
Lcd_Init()
Lcd_Cmd(_LCD_CLEAR)
Lcd_Cmd(_LCD_CURSOR_OFF)
for i=1 to 17
Lcd_Chr(1,i,text[i-1])
next i
end.

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After successful compilation and PIC programming press F9 for starting mikroICD.
After mikroICD initialization blue active line should appear.

We will debug program line by line. Pressing F8 we are executing code line by line.
It is recommended that user does not use Step Into [F7] and Step Over [F8] over
Delays routines and routines containing delays. Instead use Run to cursor [F4] and
Breakpoints functions. All changes are read from PIC and loaded into Watch Window. Note that PORTB, TRISB, ANSEL and ANSELH changed its value.

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Step Into [F7] and Step Over [F8] are mikroICD debugger functions that are used
in stepping mode. There is also Real-Time mode supported by mikroICD. Functions
that are used in Real-Time mode are Run/ Pause Debugger [F6] and Run to cursor
[F4]. Pressing F4 goes to line selected by user. User just have to select line with
cursor and press F4, and code will be executed until selected line is reached.

Run(Pause) Debugger [F6] and Toggle Breakpoints [F5] are mikroICD debugger
functions that are used in Real-Time mode. Pressing F5 marks line selected by user
for breakpoint. F6 executes code until breakpoint is reached. After reaching breakpoint Debugger halts. Here at our example we will use breakpoints for writing
"mikroElektronika" on Lcd char by char. Breakpoint is set on Lcd_Chr and program
will stop everytime this function is reached. After reaching breakpoint we must press
F6 again for continuing program execution.

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Breakpoints has been separated into two groups. There are hardware and software
break points. Hardware breakpoints are placed in PIC and they provide fastest
debug. Number of hardware breakpoints is limited (1 for P16 and 1 or 3 or 5 for
P18). If all hardware brekpoints are used, next breakpoints that will be used are software breakpoint. Those breakpoints are placed inside mikroICD, and they simulate
hardware breakpoints. Software breakpoints are much slower than hardware breakpoints. This differences between hardware and software differences are not visible
in mikroICD software but their different timings are quite notable, so it is important
to know that there is two types of breakpoints.

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MIKROICD (IN-CIRCUIT DEBUGGER) OVERVIEW
Breakpoints Window

The Breakpoints window manages the list of currently set breakpoints in the project.
Doubleclicking the desired breakpoint will cause cursor to navigate to the corresponding location in source code.

Watch Window
Debugger Watch Window is the main Debugger window which allows you to monitor program items while running your program. To show the Watch Window, select
View › Debug Windows › Watch Window from the drop-down menu.
The Watch Window displays variables and registers of PIC, with their addresses and
values. Values are updated as you go through the simulation. Use the drop-down
menu to add and remove the items that you want to monitor. Recently changed
items are colored red.

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Double clicking an item opens the Edit Value window in which you can assign a new
value to the selected variable/register. Also, you can change view to binary, hex,
char, or decimal for the selected item.

EEPROM Watch Window
mikroICD EEPROM Watch Window is available from the drop-down menu, View ›
Debug Windows › View EEPROM.
The EEPROM Watch window shows current values written into PIC internal
EEPROM memory. There are two action buttons concerning EEPROM Watch window - Write EEPROM and Read EEPROM. Write EEPROM writes data from
EEPROM Watch window into PIC internal EEPROM memory. Read EEPROM reads
data from PIC internal EEPROM memory and loads it up in EEPROM window.

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Code Watch Window

mikroICD Code Watch Window is available from the drop-down menu, View ›
Debug Windows › View Code.
The Code Watch window shows code (hex code) written into PIC. There is action
button concerning Code Watch window - Read Code. Read Code reads code from
PIC and loads it up in View Code Window.
Also, you can set an address scope in which hex code will be read.

View RAM Window
Debugger View RAM Window is available from the drop-down menu, View › Debug
Windows › View RAM.
The View RAM Window displays the map of PIC’s RAM, with recently changed
items colored red.

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Common Errors










Trying to program PIC while mikroICD is active.
Trying to debug Release build Type version of program.
Trying to debug changed program code which hasn't been compiled and pro
grammed into PIC.
Trying to select line that is empty for Run to cursor [F4] and Toggle Break
points [F5] functions.
Trying to debug PIC with mikroICD while Watch Dog Timer is enabled.
Trying to debug PIC with mikroICD while Power Up Timer is enabled.
It is not possible to force Code Protect while trying to debug PIC with
mikroICD.
Trying to debug PIC with mikroICD with pull-up resistors set to ON on RB6
and RB7.
For correct mikroICD debugging do not use pull-ups.

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MIKRO ICD ADVANCED BREAKPOINTS

mikro ICD provides the possibility to use the Advanced Breakpoints. Advanced
Breakpoints can be used with PIC18 and PIC18FJ MCUs. To enable Advanced
Breakpoints set the Advanced Breakpoints checkbox inside Watch window :

To configure Advanced Breakpoints, start mikroICD [F9] and select View › Debug
Windows › Advanced Breakpoints option from the drop-down menu or use
[Ctrl+Shift+A] shortcut

Note: When Advanced Breakpoints are enabled mikroICD operates in Real-Time
mode, so it will support only the following set of commands: Start Debugger [F9],
Run/Pause Debugger [F6] and Stop Debugger [Ctrl+F2]. Once the Advanced
Breakpoint is reached, the Advanced Breakpoints feature can be disabled and
mikroICD debugging can be continued with full set of commands. If needed,
Advanced Breakepoints can be re-enabled without restarting mikroICD.
Note: Number of Advanced Breakpoints is equal to number of Hardware breakpoints and it depends on used MCU.

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Program Memory Break
Program Memory Break is used to set the Advanced Breakpoint to the specific
address in program memory. Because of PIC pipelining mechanism program execution may stop one or two instructions after the address entered in the Address
field. Value entered in the Address field must be in hex format.
Note: Program Memory Break can use the Passcount option. The program execution will stop when the specified program address is reached for the N-th time,
where N is the number entered in the Passcount field. When some Advanced
Breakpoint stops the program execution, passcount counters for all Advanced
Breakpoints will be cleared.

File Register Break
File Register Break can be used to stop the code execution when read/write access
to the specific data memory location occurs. If Read Access is selected, the File
Register Equal option can be used to set the matching value. The program execution will be stopped when the value read from the specified data memory location is
equal to the number written in the Value field. Values entered in the Address and
Value fields must be in hex format.
Note: File Register Break can also use the Passcount option in the same way as
Program Memory Break.

Emulator Features
Event Breakpoints




Break on Stack Overflow/Underflow : not implemented.
Break on Watchdog Timer : not implemented.
Break on SLEEP : break on SLEEP instruction. SLEEP instruction will not
be executed. If you choose to continue the mikroICD debugging [F6] then
the program execution will start from the first instruction following the
SLEEP instruction.

Stopwatch
Stopwatch uses Breakpoint#2 and Breakpoint#3 as a Start and Stop conditions. To
use the Stopwatch define these two Breakpoints and check the Enable Stopwatch
checkbox.
Stopwatch options:
 Halt on Start Condition (Breakpoint#2): when checked, the program exe
cution will stop on Breakpoint#2. Otherwise, Breakpoint#2 will be used
only to start the Stopwatch.
 Halt on Stop Condition (Breakpoint#3): when checked, the program exe
cution will stop on Breakpoint#3. Otherwise, Breakpoint#3 will be used
only to stop the Stopwatch.
 Reset Stopwatch on Run : when checked, the Stopwatch will be cleared
before continuing program execution and the next counting will start from
zero. Otherwise, the next counting will start from the previous Stopwatch
value.
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Specifics
The following topics cover the specifics of mikroBasic PRO for PICcompiler:









Basic Standard Issues
Predefined Globals and Constants
Accessing Individual Bits
Interrupts
PIC Pointers
Linker Directives
Built-in Routines
Code Optimization

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BASIC STANDARD ISSUES
Divergence from the Basic Standard


Function recursion is not supported because of no easily-usable stack and
limited memory PIC Specific

Basic Language Extensions
mikroBasic PRO for PIC has additional set of keywords that do not belong to the
standard Basic language keywords:








code
data
rx
sfr
at
sbit
bit

Related topics: Keywords, PIC Specific

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PREDEFINED GLOBALS AND CONSTANTS
In order to facilitate PIC programming, mikroBasic PRO for PIC implements a number of predefined globals and constants.

SFRs and related constants
All PIC SFRs are implicitly declared as global variables of volatile word type.
These identifiers have an external linkage, and are visible in the entire project.
When creating a project, the mikroBasic PRO for PIC will include an appropriate
(*.mbas) file from defs folder, containing declarations of available SFRs and constants (such as PORTB, ADPCFG, etc). All identifiers are in upper case, identical to
nomenclature in the Microchip datasheets.
For a complete set of predefined globals and constants, look for “Defs” in the
mikroBasic PRO for PIC installation folder, or probe the Code Assistant for specific
letters (Ctrl+Space in the Code Editor).

Math constants
In addition, several commonly used math constants are predefined in mikroBasic
PRO for PIC:
PI
PI_HALF
TWO_PI
E

= 3.1415926
= 1.5707963
= 6.2831853
= 2.7182818

Predefined project level defines
These defines are based on a value that you have entered/edited in the current project, and it is equal to the name of selected device for the project.
If PIC16F887 is selected device, then PIC16F887 token will be defined as 1, so it
can be used for conditional compilation:
#IFDEF P16F887
...
#ENDIF

Related topics: Project level defines

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ACCESSING INDIVIDUAL BITS

The mikroBasic PRO for PIC allows you to access individual bits of 8-bit variables.
It also supports sbit and bit data types

Accessing Individual Bits Of Variables
If you are familiar with a particular MCU, you can access bits by name:
' Clear bit 0 on PORTA
RA0_bit = 0

Also, you can simply use the direct member selector (.) with a variable, followed by
one of identifiers B0, B1, … , B7, or 0, 1, … 7, with 7 being the most significant bit
' Clear bit 0 on PORTA
PORTA.B0 = 0
' Clear bit 5 on PORTB
PORTB.5 = 0

There is no need of any special declarations. This kind of selective access is an
intrinsic feature of mikroBasic PRO for PIC and can be used anywhere in the code.
Identifiers B0–B7 are not case sensitive and have a specific namespace. You may
override them with your own members B0–B7 within any given structure.
See Predefined Globals and Constants for more information on register/bit names.

sbit type
The mikroBasic PRO for PIC compiler has sbit data type which provides access to
bit-addressable SFRs. You can access them in several ways:
dim LEDA as sbit at PORTA.B0
dim Name as sbit at sfr-name.B
dim LEDB as sbit at PORTB.0
dim Name as sbit at sfr-name.
dim LEDC as sbit at RC0_bit
dim Name as sbit at bit-name_bit;

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bit type
The mikroBasic PRO for PIC compiler provides a bit data type that may be used for
variable declarations. It can not be used for argument lists, and function-return values.
dim bf as bit

' bit variable

There are no pointers to bit variables:
dim ptr as ^bit

' invalid

An array of type bit is not valid:
dim arr as array[5] of bit

' invalid

Note :
 Bit variables can not be initialized.
 Bit variables can not be members of structures.
 Bit variables do not have addresses, therefore unary operator @ (address
of) is not applicable to these variables.
Related topics: Predefined globals and constants

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INTERRUPTS

Interrupts can be easily handled by means of reserved word interrupt. mikroBasic PRO for PIC implictly declares procedure interrupt which cannot be redeclared.
Write your own procedure body to handle interrupts in your application. Note that
you cannot call routines from within interrupt due to stack limitations.
mikroBasic PRO for PIC saves the following SFR on stack when entering interrupt
and pops them back upon return:




PIC12 family: W, STATUS, FSR, PCLATH
PIC16 family: W, STATUS, FSR, PCLATH
PIC18 family: FSR (fast context is used to save WREG, STATUS, BSR)

P18 priority interrupts
Note: For the P18 family both low and high interrupts are supported.
For P18 low priority interrupts reserved word is interrupt_low:
1.
2.

function with name interrupt will be linked as ISR (interrupt service rou
tine) for high level interrupt
function with name interrupt_low will be linked as ISR for low level inter
rupt_low

If interrupt priority feature is to be used then the user should set the appropriate
SFR bits to enable it. For more information refer to datasheet for specific device.

Routine Calls from Interrupt
Calling functions and procedures from within the interrupt routine is now possible.
The compiler takes care about the registers being used, both in "interrupt" and in
"main" thread, and performs "smart" context-switching between the two, saving only
the registers that have been used in both threads.
The functions and procedures that don't have their own frame (no arguments and
local variables) can be called both from the interrupt and the "main" thread.

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Interrupt Examples
Here is a simple example of handling the interrupts from TMR0 (if no other interrupts
are allowed):
sub procedure interrupt
counter = counter + 1
TMR0 = 96
INTCON = $20
end sub

In case of multiple interrupts enabled, you need to test which of the interrupts
occurred and then proceed with the appropriate code (interrupt handling):
sub procedure interrupt
if TestBit(INTCON, TMR0IF) = 1 then
counter = counter + 1
TMR0 = 96
ClearBit(INTCON, TMR0F)
' ClearBit is realised as an inline function,
' and may be called from within an interrupt
else
if TestBit(INTCON, RBIF) = 1 then
counter = counter + 1
TMR0 = 96
ClearBit(INTCON,RBIF)
end if
end if
end sub

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LINKER DIRECTIVES

mikroBasic PRO for PIC uses internal algorithm to distribute objects within memory.
If you need to have a variable or routine at the specific predefined address, use the
linker directives absolute and org.
Note: You must specify an even address when using the linker directives.

Directive absolute
Directive absolute specifies the starting address in RAM for a variable. If the variable spans more than 1 word (16-bit), the higher words will be stored at the consecutive locations.
The absolute directive is appended to the declaration of a variable:
dim x as word absolute 0x32
' Variable x will occupy 1 word (16 bits) at address 0x32
dim y as longint absolute 0x34
' Variable y will occupy 2 words at addresses 0x34 and 0x36

Be careful when using the absolute directive because you may overlap two variables by accident. For example:
dim i as word absolute 0x42
' Variable i will occupy 1 word at address 0x42;
dim jj as longint absolute 0x40
' Variable will occupy 2 words at 0x40 and 0x42; thus,
' changing i changes jj at the same time and vice versa
Note: You must specify an even address when using the directive absolute.

Directive org
The directive org specifies the starting address of a routine in ROM. It is appended to the declaration of routine. For example:
sub procedure proc(dim par as word) org 0x200
' Procedure will start at the address 0x200;
...
end sub

Note: You must specify an even address when using the directive org.

Directive orgal
Use the orgall directive to specify the address above which all routines, constants
will be placed. Example:
main:
orgall(0x200) ' All the routines, constants in main program will
be above the address 0x200
...
end.

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BUILT-IN ROUTINES
The mikroBasic PRO for PIC compiler provides a set of useful built-in utility functions.
The Lo, Hi, Higher, Highest routines are implemented as macros. If you want
to use these functions you must include built_in.h header file (located in the inlclude folder of the compiler) into your project.
The Delay_us and Delay_ms routines are implemented as “inline”; i.e. code is generated in the place of a call, so the call doesn’t count against the nested call limit.
The Vdelay_ms, Delay_Cyc and Get_Fosc_kHz are actual Basic routines. Their
sources can be found in Delays.mbas file located in the uses folder of the compiler.





Lo
Hi
Higher
Highest




Inc
Dec





SetBit
ClearBit
TestBit




Delay_us
Delay_ms




Clock_KHz
Clock_MHz




Reset
ClrWdt



DisableContextSaving



SetFuncCall




GetDateTime
GetVersion

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Lo
Prototype

sub function Lo(number as longint) as byte

Returns

Lowest 8 bits (byte)of number, bits 7..0.
Function returns the lowest byte of number. Function does not interpret bit patterns of number – it merely returns 8 bits as found in register.

Description
This is an “inline” routine; code is generated in the place of the call, so the call
doesn’t count against the nested call limit.
Requires

Arguments must be variable of scalar type (i.e. Arithmetic Types and Pointers).

Example

d = 0x1AC30F4
tmp = Lo(d) ' Equals 0xF4

Hi
Prototype

sub function Hi(number as longint) as byte

Returns

Returns next to the lowest byte of number, bits 8..15.
Function returns next to the lowest byte of number. Function does not interpret
bit patterns of number – it merely returns 8 bits as found in register.

Description
This is an “inline” routine; code is generated in the place of the call, so the call
doesn’t count against the nested call limit.
Requires

Arguments must be variable of scalar type (i.e. Arithmetic Types and Pointers).

Example

d = 0x1AC30F4
tmp = Hi(d) ' Equals 0x30

Higher
Prototype

sub function Higher(number as longint) as byte

Returns

Returns next to the highest byte of number, bits 16..23.
Function returns next to the highest byte of number. Function does not interpret
bit patterns of number – it merely returns 8 bits as found in register.

Description
This is an “inline” routine; code is generated in the place of the call, so the call
doesn’t count against the nested call limit.

120

Requires

Arguments must be variable of scalar type (i.e. Arithmetic Types and Pointers).

Example

d = 0x1AC30F4
tmp = Higher(d)

' Equals 0xAC

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Highest
Prototype

sub function Highest(number as longint) as byte

Returns

Returns the highest byte of number, bits 24..31.
Function returns the highest byte of number. Function does not interpret bit patterns of number – it merely returns 8 bits as found in register.

Description
This is an “inline” routine; code is generated in the place of the call, so the call
doesn’t count against the nested call limit.
Requires

Arguments must be variable of scalar type (i.e. Arithmetic Types and Pointers).

Example

d = 0x1AC30F4
tmp = Highest(d)

' Equals 0x01

Inc
Prototype

sub procedure Inc(dim byref par as longint)

Returns

Nothing.

Description Increases parameter par by 1.
Requires

Nothing.

Example

p = 4
Inc(p)

' p is now 5

Dec
Prototype

sub procedure Dec(dim byref par as longint)

Returns

Nothing.

Description Decreases parameter par by 1.
Requires

Nothing.

Example

p = 4
Dec(p)

' p is now 3

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Delay_us
Prototype

sub procedure Delay_us(const time_in_us as longword)

Returns

Nothing.
Creates a software delay in duration of time_in_us microseconds (a constant).
Range of applicable constants depends on the oscillator frequency.

Description
This is an “inline” routine; code is generated in the place of the call, so the call
doesn’t count against the nested call limit.
Requires

Nothing.

Example

Delay_us(1000)

' One millisecond pause

Delay_ms
Prototype

sub procedure Delay_ms(const time_in_ms as longword)

Returns

Nothing.
Creates a software delay in duration of time_in_ms milliseconds (a constant).
Range of applicable constants depends on the oscillator frequency.

Description
This is an “inline” routine; code is generated in the place of the call, so the call
doesn’t count against the nested call limit.
Requires

Nothing.

Example

Delay_ms(1000)

' One second pause

Clock_KHz
Prototype

sub function Clock_Khz() as word

Returns

Device clock in KHz, rounded to the nearest integer.
Function returns device clock in KHz, rounded to the nearest integer.

Description

122

This is an “inline” routine; code is generated in the place of the call, so the call
doesn’t count against the nested call limit.

Requires

Nothing.

Example

clk = Clock_kHz()

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Clock_MHz
Prototype

sub function Clock_MHz()as byte

Returns

Device clock in MHz, rounded to the nearest integer.
Function returns device clock in MHz, rounded to the nearest integer.

Description

This is an “inline” routine; code is generated in the place of the call, so the call
doesn’t count against the nested call limit.

Requires

Nothing.

Example

clk = Clock_MHz()

Reset
Prototype

sub procedure Reset

Returns

Nothing.

Description

This procedure is equal to assembler instruction reset. This procedure works
only for P18.

Requires

Nothing.

Example

Reset 'Resets the PIC MCU

ClrWdt
Prototype

sub procedure ClrWdt

Returns

Nothing.

Description This procedure is equal to assembler instruction clrwdt.
Requires

Nothing.

Example

ClrWdt 'Clears PIC's WDT

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DisableContextSaving
Prototype

sub procedure DisableContextSaving()

Returns

Nothing.

Use the DisableContextSaving() to instruct the compiler not to automatically
perform context-switching. This means that no regiser will be saved/restored by
Description the compiler on entrance/exit from interrupt service routine. This enables the
user to manually write code for saving registers upon entrance and to restore
them before exit from interrupt.
Requires

Nothing.

Example

DisableContextSaving() 'instruct the compiler not to automatically perform context-switching

SetFuncCall
Prototype

sub procedure SetFuncCall(FuncName as string)

Returns

Nothing.
Function informs the linker about a specific routine being called. SetFuncCall
has to be called in a routine which accesses another routine via a pointer.

Description
Function prepares the caller tree, and informs linker about the procedure usage,
making it possible to link the called routine.
Requires

Example

124

Nothing.
sub procedure first(p, q as byte)
...
SetFuncCall(second) ' let linker know that we will call the
routine 'second'
...
end sub

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GetDateTime
Prototype

sub function GetDateTime() as string

Returns

String with date and time when this routine is compiled.

Description

Use the GetDateTime() to get date and time of compilation as string in your
code.

Requires

Nothing.

Example

str : GetDateTime()

GetVersion
Prototype

sub function GetVersion() as string

Returns

String with current compiler version.

Description Use the GetVersion() to get the current version of compiler.
Requires

Nothing.

Example

str = GetVersion() ' for example, str will take the value of
'8.2.1.6'

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CODE OPTIMIZATION

Optimizer has been added to extend the compiler usability, cut down the amount of
code generated and speed-up its execution. The main features are:

Constant folding
All expressions that can be evaluated in the compile time (i.e. are constant) are
being replaced by their results. (3 + 5 -> 8);

Constant propagation
When a constant value is being assigned to a certain variable, the compiler recognizes this and replaces the use of the variable by constant in the code that follows,
as long as the value of a variable remains unchanged.

Copy propagation
The compiler recognizes that two variables have the same value and eliminates one
of them further in the code.

Value numbering
The compiler "recognizes" if two expressions yield the same result and can therefore eliminate the entire computation for one of them.

"Dead code" ellimination
The code snippets that are not being used elsewhere in the programme do not affect
the final result of the application. They are automatically removed.

Stack allocation
Temporary registers ("Stacks") are being used more rationally, allowing VERY complex expressions to be evaluated with a minimum stack consumption.

Local vars optimization
No local variables are being used if their result does not affect some of the global or
volatile variables.

Better code generation and local optimization
Code generation is more consistent and more attention is payed to implement specific solutions for the code "building bricks" that further reduce output code size.

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5

PIC Specifics
In order to get the most from your mikroBasic PRO for PIC compiler, you should be
familiar with certain aspects of PIC MCU. This knowledge is not essential, but it can
provide you a better understanding of PICs’ capabilities and limitations, and their
impact on the code writing.

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Types Efficiency

First of all, you should know that PIC’s ALU, which performs arithmetic operations,
is optimized for working with bytes. Although mikroBasic PRO for PIC is capable of
handling very complex data types, PIC may choke on them, especially if you are
working on some of the older models. This can dramatically increase the time needed for performing even simple operations. Universal advice is to use the smallest
possible type in every situation. It applies to all programming in general, and doubly
so with microcontrollers.
Get to know your tool. When it comes down to calculus, not all PIC MCUs are of
equal performance. For example, PIC16 family lacks hardware resources to multiply two bytes, so it is compensated by a software algorithm. On the other hand,
PIC18 family has HW multiplier, and multiplication works considerably faster.

Nested Calls Limitations
Nested call represents a function call within function body, either to itself (recursive
calls) or to another function. Recursive calls, as form of cross-calling, are unsupported by mikroBasic PRO for PIC due to the PIC’s stack and memory limitations.
mikroBasic PRO for PIC limits the number of non-recursive nested calls to:




8 calls for PIC12 family,
8 calls for PIC16 family,
31 calls for PIC18 family

Note that some of the built-in routines do not count against this limit, due to their
“inline” implementation.
Number of the allowed nested calls decreases by one if you use any of the following operators in the code: * / %. It further decreases if you use interrupts in the program. Number of decreases is specified by number of functions called from interrupt. Check functions reentrancy.
If the allowed number of nested calls is exceeded, the compiler will report a stack
overflow error.

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PIC18FxxJxx Specifics
Shared Address SFRs
mikroBasic PRO for PIC does not provide auto setting of bit for acessing alternate
register. This is new feature added to pic18fxxjxx family and will be supported in
future. In several locations in the SFR bank, a single address is used to access two
different hardware registers. In these cases, a “legacy” register of the standard
PIC18 SFR set (such as OSCCON, T1CON, etc.) shares its address with an alternate register. These alternate registers are associated with enhanced configuration
options for peripherals, or with new device features not included in the standard
PIC18 SFR map. A complete list of shared register addresses and the registers
associated with them is provided in datasheet.

PIC16 Specifics
Breaking Through Pages
In applications targeted at PIC16, no single routine should exceed one page (2,000
instructions). If routine does not fit within one page, linker will report an error. When
confront with this problem, maybe you should rethink the design of your application
– try breaking the particular routine into several chunks, etc.

Limits of Indirect Approach Through FSR
Pointers with PIC16 are “near”: they carry only the lower 8 bits of the address. Compiler will automatically clear the 9th bit upon startup, so that pointers will refer to
banks 0 and 1. To access the objects in banks 2 or 3 via pointer, user should manually set the IRP, and restore it to zero after the operation.
Note: It is very important to take care of the IRP properly, if you plan to follow this
approach. If you find this method to be inappropriate with too many variables, you
might consider upgrading to PIC18.
Note: If you have many variables in the code, try rearranging them with linker directive absolute. Variables that are approached only directly should be moved to banks
3 and 4 for increased efficiency.
Related topics: mikroBasic PRO for PIC specifics

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MEMORY TYPE SPECIFIERS

The mikroBasic PRO for PIC supports usage of all memory areas. Each variable may be explicitly assigned to a specific memory space by including a memory type specifier in the declaration,
or implicitly assigned.
The following memory type specifiers can be used:





code
data
rx
sfr

Memory type specifiers can be included in svariable declaration.
For example:
dim data_buffer as byte data
const txt = "Enter parameter" code

' puts data_buffer in data ram
' puts text in program memory

code
Description

The code memory type may be used for allocating constants in program memory.

Example

‘puts txt in program memory
const txt = "Enter parameter" code;

data
Description This memory specifier is used when storing variable to the internal data SRAM.
Example

' puts data_buffer in data ram
dim data_buffer as byte data

rx
This memory specifier allows variable to be stored in the Rx space (Register
file).
Description Note: In most of the cases, there will be enough space left for the user variables
in the Rx space. However, since compiler uses Rx space for storing temporary
variables, it might happen that user variables will be stored in the internal data
SRAM, when writing complex programs.
Example

132

' puts y in Rx space
dim y as char rx

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sfr
This memory specifier in combination with (rx, io, data) allows user to access
Description special function registers. It also instructs compiler to maintain same identifier in
Basic and assembly.

Example

dim io_buff as byte io sfr
' put io_buff in I/O memory space
dim y as char rx sfr
' puts y in Rx space
dim temp as byte data sfr and dim temp as byte sfr are equivalent, and put temp in Extended I/O Space.

Note: If none of the memory specifiers are used when declaring a variable, data specifier will be
set as default by the compiler.
Related topics: Accessing individual bits, SFRs, Constants, Functions

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6

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Language Reference
The mikroBasic PRO for PIC Language Reference describes the syntax, semantics
and implementation of the mikroBasic PRO for PIC language.
The aim of this reference guide is to provide a more understandable description of
the mikroBasic PRO for PIC language to the user.

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Language Reference


Lexical Elements
Whitespace
Comments
Tokens
Literals
Keywords
Identifiers
Punctuators



Program Organization
Program Organization
Scope and Visibility
Modules







Variables
Constants
Labels
Symbols
Functions and Procedures
Functions
Procedures



Types
Simple Types
Arrays
Strings
Pointers
Structures
Types Conversions
Implicit Conversion
Explicit Conversion



Operators
Introduction to Operators
Operators Precedence and Associativity
Relational Operators
Bitwise Operators
Boolean Operators

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Expressions
Expressions



Statements
Introduction to Statements
Assignment Statements
Conditional Statements
If Statement
Select Case Statement
Iteration Statements (Loops)
For Statement
While Statement
Do Statement
Jump Statements
Break and Continue Statements
Exit Statement
Goto Statement
Gosub Statement
asm Statement



Directives
Compiler Directives
Linker Directives

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LEXICAL ELEMENTS OVERVIEW

The following topics provide a formal definition of the mikroBasic PRO for PIC lexical elements. They describe different categories of word-like units (tokens) recognized by language.
In the tokenizing phase of compilation, the source code file is parsed (i.e. broken
down) into tokens and whitespace. The tokens in mikroBasic PRO for PIC are
derived from a series of operations performed on your programs by the compiler.
A mikroBasic PRO for PIC program starts as a sequence of ASCII characters representing the source code, created by keystrokes using a suitable text editor (such
as the mikroBasic PRO for PIC Code Editor). The basic program unit in mikroBasic
PRO for PIC is a file. This usually corresponds to a named file located in RAM or on
disk, having the extension .mbas.

WHITESPACE
Whitespace is a collective name given to spaces (blanks), horizontal and vertical
tabs, newline characters and comments. Whitespace can serve to indicate where
tokens start and end, but beyond this function, any surplus whitespace is discarded.
For example, two sequences
dim tmp as byte
dim j as wordand
and
dim
dim

tmp
j

as
as

byte
word

are lexically equivalent and parse identically.

Newline Character
Newline character (CR/LF) is not a whitespace in BASIC, and serves as a statement
terminator/separator. In mikroBasic PRO for PIC, however, you may use newline to
break long statements into several lines. Parser will first try to get the longest possible expression (across lines if necessary), and then check for statement terminators.

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Whitespace in Strings
The ASCII characters representing whitespace can occur within string literals, in
which case they are protected from the normal parsing process (they remain a part
of the string). For example,
some_string = “mikro foo”

parses to four tokens, including a single string literal token:
some_string
=
“mikro foo”
newline character

COMMENTS
Comments are pieces of a text used to annotate a program, and are technically
another form of whitespace. Comments are for the programmer’s use only. They are
stripped from the source text before parsing.
Use the apostrophe to create a comment:
' Any text between an apostrophe and the end of the
' line constitutes a comment. May span one line only.

There are no multi-line comments in mikroBasic PRO for PIC.

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TOKENS

Token is the smallest element of a mikroBasic PRO for PIC program, meaningful to
the compiler. The parser separates tokens from the input stream by creating the
longest token possible using the input characters in a left–to–right scan.
mikroBasic PRO for PIC recognizes the following kinds of tokens:






keywords
identifiers
constants
operators
punctuators (also known as separators)

Token Extraction Example
Here is an example of token extraction. See the following code sequence:
end_flag = 0

The compiler would parse it into four tokens:
end_flag
=
0
newline

'
'
'
'

variable identifier
assignment operator
literal
statement terminator

Note that end_flag would be parsed as a single identifier, rather than the keyword
end followed by the identifier _flag.

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LITERALS
Literals are tokens representing fixed numeric or character values.
The data type of a constant is deduced by the compiler using such clues as numeric value and format used in the source code.

Integer Literals
Integral values can be represented in decimal, hexadecimal, or binary notation.
In decimal notation, numerals are represented as a sequence of digits (without commas, spaces, or dots), with optional prefix + or - operator to indicate the sign. Values
default to positive (6258 is equivalent to +6258).
The dollar-sign prefix ($) or the prefix 0x indicates a hexadecimal numeral (for
example, $8F or 0x8F).
The percent-sign prefix (%) indicates a binary numeral (for example, %0101).
Here are some examples:
11
$11
0x11
%11

‘
‘
‘
‘

decimal literal
hex literal, equals decimal 17
hex literal, equals decimal 17
binary literal, equals decimal 3

The allowed range of values is imposed by the largest data type in mikroBasic PRO
for PIC – longword. The compiler will report an error if the literal exceeds
4294967295 ($FFFFFFFF).

Floating Point Literals
A floating-point value consists of:





Decimal integer
Decimal point
Decimal fraction
e or E and a signed integer exponent (optional)

You can omit either the decimal integer or decimal fraction (but not both).
Negative floating constants are taken as positive constants with the unary operator
minus (-) prefixed.
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mikroBasic PRO for PIC limits floating-point constants to the range of
±1.17549435082 * 10-38 .. ±6.80564774407 * 1038.

Here are some examples:
0.
-1.23
23.45e6
2e-5
3E+10
.09E34

‘
‘
‘
‘
‘
‘

=
=
=
=
=
=

0.0
-1.23
23.45 * 10^6
2.0 * 10^-5
3.0 * 10^10
0.09 * 10^34

Character Literals
Character literal is one character from the extended ASCII character set, enclosed
with quotes (for example, "A"). Character literal can be assigned to variables of byte
and char type (variable of byte will be assigned the ASCII value of the character).
Also, you can assign character literal to a string variable.

String Literals
String literal is a sequence of characters from the extended ASCII character set,
enclosed with quotes. Whitespace is preserved in string literals, i.e. parser does not
“go into” strings but treats them as single tokens.
Length of string literal is a number of characters it consists of. String is stored internally as the given sequence of characters plus a final null character. This null
character is introduced to terminate the string, it does not count against the string’s
total length.
String literal with nothing in between the quotes (null string) is stored as a single null character.
You can assign string literal to a string variable or to an array of char.
Here are several string literals:

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“Hello world!”
“Temperature is stable”
“
“C”
“ “

Language Reference
‘
‘
‘
‘
‘

message, 12 chars long
message, 21 chars long'
two spaces, 2 chars long
letter, 1 char long
null string, 0 chars long

The quote itself cannot be a part of the string literal, i.e. there is no escape
sequence. You could use the built-in function Chr to print a quote: Chr(34). Also, see
String Splicing.

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KEYWORDS
Keywords are the words reserved for special purposes and must not be used as normal identifier names.
Beside standard BASIC keywords, all relevant SFR are defined as global variables
and represent reserved words that cannot be redefined (for example: P0, TMR1,
T1CON, etc). Probe Code Assistant for specific letters (Ctrl+Space in Editor) or refer
to Predefined Globals and Constants.
Here is the alphabetical listing of keywords in mikroBasic PRO for PIC:





































144

Abstract
And
Array
As
at
Asm
Assembler
Automated
bdata
Begin
bit
Case
Cdecl
Class
Code
compact
Const
Constructor
Contains
Data
Default
deprecated
Destructor
Dispid
Dispinterface
Div
Do
Downto
Dynamic
Else
End
Except
Export
Exports
External
Far

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Language Reference

File
Finalization
Finally
For
Forward
Function
Goto
idata
If
ilevel
Implementation
In
Index
Inherited
Initialization
Inline
Interface
Is
Label
large
Library
Message
Mod
name
Near
Nil
Not
Object
Of
on
Or
org
Out
overload
Override
package
Packed
Pascal
pdata
platform
Private
Procedure
Program
Property
Protected
Public
Published
Raise
Read
Readonly

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mikroBasic PRO for PIC

Record
Register
Reintroduce
Repeat
requires
Reset
Resourcestring
Resume
Safecall
sbit
Set
sfr
Shl
Shr
small
Stdcall
Stored
String
Stringresource
Then
Threadvar
To
Try
Type
Unit
Until
Uses
Var
Virtual
Volatile
While
With
Write
Writeonly
xdata
Xor

Also, mikroBasic PRO for PIC includes a number of predefined identifiers used in
libraries. You could replace them by your own definitions, if you plan to develop your
own libraries. For more information, see mikroBasic PRO for PIC Libraries.

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IDENTIFIERS
Identifiers are arbitrary names of any length given to functions, variables, symbolic
constants, user-defined data types and labels. All these program elements will be
referred to as objects throughout the help (don't get confused about the meaning of
object in object-oriented programming).
Identifiers can contain the letters a to z and A to Z, underscore character “_”,
and digits from 0 to 9. First character must be a letter or an underscore, i.e. identifier cannot begin with a numeral.

Case Sensitivity
mikroBasic PRO for PIC is not case sensitive, so Sum, sum, and suM are equivalent identifiers.

Uniqueness and Scope
Although identifier names are arbitrary (within the rules stated), errors result if the
same name is used for more than one identifier within the same scope. Simply,
duplicate names are illegal within the same scope. For more information, refer to
Scope and Visibility.

Identifier Examples
Here are some valid identifiers:
temperature_V1
Pressure
no_hit
dat2string
SUM3
_vtext

… and here are some invalid identifiers:
7temp
%higher
xor
j23.07.04

‘
‘
‘
‘

NO
NO
NO
NO

-----

cannot
cannot
cannot
cannot

begin with a numeral
contain special characters
match reserved word
contain special characters (dot)

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PUNCTUATORS
The mikroBasic punctuators (also known as separators) are:
 [ ] – Brackets
 ( ) – Parentheses
 , – Comma
 : – Colon
 . – Dot

Brackets
Brackets [ ] indicate single and multidimensional array subscripts:
dim alphabet as byte[30]
' ...
alphabet[2] = "c"

For more information, refer to Arrays.

Parentheses
Parentheses ( ) are used to group expressions, isolate conditional expressions and
indicate function calls and function declarations:
d = c * (a + b)
' Override normal precedence
if (d = z) then ...
' Useful with conditional statements
func()
' Function call, no arguments
sub function func2(dim n as word 'Function declaration w/ parameters

For more information, refer to Operators Precedence and Associativity, Expressions
or Functions and Procedures.

Comma
Comma (,) separates the arguments in function calls:
LCD_Out(1, 1, txt);

Furthermore, the comma separates identifiers in declarations:
dim i, j, k as word

The comma also separates elements of array in initialization lists:
const MONTHS as byte[12] = (31,28,31,30,31,30,31,31,30,31,30,31)

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Colon
Colon (:) is used to indicate a labeled statement:
start: nop
'...
goto start

For more information, refer to Labels.

Dot
Dot (.) indicates access to a structure member. For example:
person.surname = "Smith"

For more information, refer to Structures.
Dot is a necessary part of floating point literals. Also, dot can be used for accessing
individual bits of registers in mikroBasic PRO.

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PROGRAM ORGANIZATION

mikroBasic PRO for PIC imposes strict program organization. Below you can find
models for writing legible and organized source files. For more information on file
inclusion and scope, refer to Modules and to Scope and Visibility.

Organization of Main Unit
Basically, the main source file has two sections: declaration and program body. Declarations should be in their proper place in the code, organized in an orderly manner. Otherwise, the compiler may not be able to comprehend the program correctly.
When writing code, follow the model presented below. The main unit should look like this:
program 
include 
'********************************************************
'* Declarations (globals):
'********************************************************
' symbols declarations
symbol ...
' constants declarations
const ...
' structures declarations
structure ...
' variables declarations
dim Name[, Name2...] as
[volatile] [register] [sfr]

[^]type

[absolute

0x123]

[external]

' procedures declarations
sub procedure procedure_name(...)

...
end sub
' functions declarations
sub function function_name(...) as return_type

...
end sub
'********************************************************

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'* Program body:
'********************************************************
main:
' write your code here
end.

Organization of Other Modules
Modules other than main start with the keyword module. Implementation section
starts with the keyword implements. Follow the model presented below:

module 
include 
'********************************************************
'* Interface (globals):
'********************************************************
' symbols declarations
symbol ...
' constants declarations
const ...
' structures declarations
structure ...
' variables declarations
dim Name[, Name2...] as
[volatile] [register] [sfr]

[^]type

[absolute

0x123]

[external]

' procedures prototypes
sub procedure sub_procedure_name([dim byref] [const] ParamName as
[^]type, [dim byref] [const] ParamName2, ParamName3 as [^]type)
' functions prototypes
sub function sub_function_name([dim byref] [const] ParamName as
[^]type, [dim byref] [const] ParamName2, ParamName3 as [^]type) as
[^]type
'********************************************************
'* Implementation:
'********************************************************
implements
' constants declarations

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const ...
' variables declarations
dim ...
' procedures declarations
sub procedure sub_procedure_name([dim byref] [const] ParamName as
[^]type, [dim byref] [const] ParamName2, ParamName3 as [^]type)
[ilevel 0x123] [overload] [forward]

...
end sub
' functions declarations
sub function sub_function_name([dim byref] [const] ParamName as
[^]type, [dim byref] [const] ParamName2, ParamName3 as [^]type) as
[^]type [ilevel 0x123] [overload] [forward]

...
end sub
end.

Note: Sub functions and sub procedures must have the same declarations in the
interface and implementation section. Otherwise, compiler will report an error.

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SCOPE AND VISIBILITY
Scope
The scope of an identifier is a part of the program in which the identifier can be used
to access its object. There are different categories of scope, which depends on how
and where identifiers are declared:
Place of declaration

Scope

Identifier is declared in the
declaration section of the
main module, out of any
function or procedure

Scope extends from the point where it is declared to
the end of the current file, including all routines
enclosed within that scope. These identifiers have a
file scope and are referred to as globals.

Scope extends from the point where it is declared to
Identifier is declared in the
the end of the current routine. These identifiers are
function or procedure
referred to as locals.
Scope extends the interface section of a module
from the point where it is declared to the end of the
Identifier is declared in the
module, and to any other module or program that
interface section of the
uses that module. The only exception are symbols
module
which have a scope limited to the file in which they
are declared.
Identifier is declared in the Scope extends from the point where it is declared to
implementation section of the end of the module. The identifier is available to
the module, but not within any function or procedure in the module.
any function or procedure

Visibility
The visibility of an identifier is that region of the program source code from which
legal access to the identifier’s associated object can be made.
Scope and visibility usually coincide, though there are circumstances under which
an object becomes temporarily hidden by the appearance of a duplicate identifier,
i.e. the object still exists but the original identifier cannot be used to access it until
the scope of the duplicate identifier is ended.
Technically, visibility cannot exceed scope, but scope can exceed visibility.

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MODULES
In mikroBasic PRO for PIC, each project consists of a single project file and one or
more module files. The project file, with extension .mbpav contains information on
the project, while modules, with extension .mbas, contain the actual source code.
See Program Organization for a detailed look at module arrangement.
Modules allow you to:




break large programs into encapsulated modules that can be edited sepa
rately,
create libraries that can be used in different projects,
distribute libraries to other developers without disclosing the source code.

Each module is stored in its own file and compiled separately; compiled modules are
linked to create an application. To build a project, the compiler needs either a source
file or a compiled module file for each module.

Include Clause
mikroBasic PRO for PIC includes modules by means of the include clause. It consists of the reserved word include, followed by a quoted module name. Extension
of the file should not be included.
You can include one file per include clause. There can be any number of the
include clauses in each source file, but they all must be stated immediately after

the program (or module) name.
Here’s an example:
program MyProgram
include "utils"
include "strings"
include "MyUnit"
...
For the given module name, the compiler will check for the presence of .mcl and
.mbas files, in order specified by search paths.




154

If both .mbas and .mcl files are found, the compiler will check their dates
and include the newer one in the project. If the.mbas file is newer than the
.mcl, then .mbas file will be recompiled and new.mcl will be created,
overwriting the old .mcl.
If only the .mbas file is found, the compiler will create the.mcl file and

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include it in the project;
If only the .mcl file is present, i.e. no source code is available, the compil
er will include it as found;
If none of the files found, the compiler will issue a “File not found” warning.

Main Module
Every project in mikroBasic PRO for PIC requires a single main module file. The
main module is identified by the keyword program at the beginning. It instructs the
compiler where to “start”.
After you have successfully created an empty project with Project Wizard, Code Editor will display a new main module. It contains the bare-bones of the program:
program MyProject
' main procedure
main:
' Place program code here
end.

Other than comments, nothing should precede the keyword program. After the program name, you can optionally place the include clauses.
Place all global declarations (constants, variables, labels, routines, structures)
before the label main.

Other Modules
Modules other than main start with the keyword module. Newly created blank module contains the bare-bones:
module MyModule
implements
end.

Other than comments, nothing should precede the keyword module. After the module name, you can optionally place the include clauses.

Interface Section
Part of the module above the keyword implements is referred to as interface section. Here, you can place global declarations (constants, variables, labels, routines,
structures) for the project.

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Do not define routines in the interface section. Instead, state the prototypes of routines (from implementation section) that you want to be visible outside the module.
Prototypes must exactly match the declarations.

Implementation Section
Implementation section hides all irrelevant innards from other units, allowing encapsulation of code.
Everything declared below the keyword implements is private, i.e. has its scope limited to the file. When you declare an identifier in the implementation section of a
module, you cannot use it outside the module, but you can use it in any block or routine defined within the module.
By placing the prototype in the interface section of the module(above the implements) you can make the routine public, i.e. visible outside of module. Prototypes
must exactly match the declarations.

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VARIABLES
Variable is an object whose value can be changed during the runtime. Every variable is declared under unique name which must be a valid identifier. This name is
used for accessing the memory location occupied by the variable.
Variables are declared in the declaration part of the file or routine — each variable
needs to be declared before it is used. Global variables (those that do not belong to
any enclosing block) are declared below the include statements, above the label
main.

Specifying a data type for each variable is mandatory. mikroBasic PRO for PIC syntax for variable declaration is:
dim identifier_list as type

Here, identifier_list is a comma-delimited list of valid identifiers, and type can
be any data type.
For more details refer to Types and Types Conversions. For more information on
variables’ scope refer to the chapter Scope and Visibility.
Here are a few examples:
dim i, j, k as byte
dim counter, temp as word
dim samples as longint[100]

External Modifier
Use the external modifier to indicate that the actual place and initial value of the
variable, or body of the function, is defined in a separate source code module.

Variables and PIC
Every declared variable consumes part of RAM memory. Data type of variable determines not only the allowed range of values, but also the space a variable occupies
in RAM memory. Bear in mind that operations using different types of variables take
different time to be completed. mikroBasic PRO for PIC recycles local variable memory space – local variables declared in different functions and procedures share the
same memory space, if possible.
There is no need to declare SFR explicitly, as mikroBasic PRO for PIC automatically declares relevant registers as global variables of word. For example: W0, TMR1,
etc.
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CONSTANTS
Constant is a data whose value cannot be changed during the runtime. Using a constant in a program consumes no RAM memory. Constants can be used in any
expression, but cannot be assigned a new value.
Constants are declared in the declaration part of the program or routine, with the following syntax:
const constant_name [as type] = value

Every constant is declared under unique constant_name which must be a valid
identifier. It is a tradition to write constant names in uppercase. Constant requires
you to specify value, which is a literal appropriate for the given type. type is optional and in the absence of it , the compiler assumes the “smallest” type that can
accommodate value.
Note: You cannot omit type if declaring a constant array.
Here are a few examples:
const
const
const
const
const

158

MAX as longint = 10000
MIN = 1000
' compiler will assume word type
SWITCH = "n"
' compiler will assume char type
MSG = "Hello"
' compiler will assume string type
MONTHS as byte[12] = (31,28,31,30,31,30,31,31,30,31,30,31)

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LABELS
Labels serve as targets for the goto and gosub statements. Mark the desired statement with label and colon like this:
label_identifier : statement

No special declaration of label is necessary in mikroBasic PRO for PIC.
Name of the label needs to be a valid identifier. The labeled statement and
goto/gosub statement must belong to the same block. Hence it is not possible to

jump into or out of routine. Do not mark more than one statement in a block with the
same label.
Note: The label main marks the entry point of a program and must be present in the
main module of every project. See Program Organization for more information.
Here is an example of an infinite loop that calls the procedure Beep repeatedly:
loop:
Beep
goto loop

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SYMBOLS

mikroBasic PRO for PIC symbols allow you to create simple macros without parameters. You can replace any line of code with a single identifier alias. Symbols, when
properly used, can increase code legibility and reusability.
Symbols need to be declared at the very beginning of the module, right after the
module name and (optional) include clauses. Check Program Organization for
more details. Scope of a symbol is always limited to the file in which it has been
declared.
Symbol is declared as:
symbol alias = code

Here, alias must be a valid identifier which you will use throughout the code. This
identifier has a file scope. The code can be any line of code (literals, assignments,
function calls, etc).
Using a symbol in the program consumes no RAM – the compiler will simply replace
each instance of a symbol with the appropriate line of code from the declaration.
Here is an example:
symbol MAXALLOWED = 216
symbol PORT = P0
symbol MYDELAY = Delay_ms(1000)
dim cnt as byte

' Symbol as alias for numeric value
' Symbol as alias for SFR
' Symbol as alias for procedure call

' Some variable

'...
main:
if cnt > MAXALLOWED then
cnt = 0
PORT.1 = 0
MYDELAY
end if

Note: Symbols do not support macro expansion in a way the C preprocessor does.

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FUNCTIONS AND PROCEDURES
Functions and procedures, collectively referred to as routines, are subprograms
(self-contained statement blocks) which perform a certain task based on a number
of input parameters. When executed, a function returns value while procedure does
not.

Functions
A function is declared like this:
sub function function_name(parameter_list) as return_type
[ local declarations ]
function body
end sub
function_name represents a function’s name and can be any valid identifier.
return_type is a type of return value and can be any simple type. Within parentheses, parameter_list is a formal parameter list very similar to variable declara-

tion.In mikroBasic PRO for PIC, parameters are always passed to a function by
value. To pass an argument by address, add the keyword byref ahead of identifier.
Local declarations are optional declarations of variables and/or constants, local
for the given function. Function body is a sequence of statements to be executed

upon calling the function.

Calling a function
A function is called by its name, with actual arguments placed in the same sequence
as their matching formal parameters. The compiler is able to coerce mismatching
arguments to the proper type according to implicit conversion rules. Upon a function
call, all formal parameters are created as local objects initialized by values of actual arguments. Upon return from a function, a temporary object is created in the place
of the call and it is initialized by the value of the function result. This means that function call as an operand in complex expression is treated as the function result.
In standard Basic, a function_name is automatically created local variable that can
be used for returning a value of a function. mikroBasic PRO for PIC also allows you
to use the automatically created local variable result to assign the return value of
a function if you find function name to be too ponderous. If the return value of a function is not defined the compiler will report an error.
Function calls are considered to be primary expressions and can be used in situations where expression is expected. A function call can also be a self-contained
statement and in that case the return value is discarded.
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Example
Here’s a simple function which calculates xn based on input parameters x and n (n
> 0):
sub function power(dim x, n as byte) as longint
dim i as byte
result = 1
if n > 0 then
for i = 1 to n
result = result*x
next i
end if
end sub

Now we could call it to calculate 312:
tmp = power(3, 12)

PROCEDURES
Procedure is declared like this:
sub procedure procedure_name(parameter_list)
[ local declarations ]
procedure body
end sub
procedure_name represents a procedure’s name and can be any valid identifier.
Within parentheses, parameter_list is a formal parameter list very similar to variable declaration. In mikroBasic PRO for PIC, parameters are always passed to procedure by value; to pass argument by address, add the keyword byref ahead of
identifier.
Local declarations are optional declaration of variables and/or constants, local
for the given procedure. Procedure body is a sequence of statements to be executed upon calling the procedure.

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Calling a procedure
A procedure is called by its name, with actual arguments placed in the same
sequence as their matching formal parameters. The compiler is able to coerce mismatching arguments to the proper type according to implicit conversion rules. Upon
procedure call, all formal parameters are created as local objects initialized by values of actual arguments.
Procedure call is a self-contained statement.

Example
Here’s an example procedure which transforms its input time parameters, preparing
them for output on LCD:
sub procedure time_prep(dim
sec = ((sec and $F0) >>
min = ((min and $F0) >>
hr
= ((hr and $F0) >>
end sub

byref
4)*10
4)*10
4)*10

sec, min, hr as byte)
+ (sec and $0F)
+ (min and $0F)
+ (hr and $0F)

Function Pointers
Function pointers are allowed in mikroBasic PRO for PIC. The example shows how
to define and use a function pointer:

Example:
Example demonstrates the usage of function pointers. It is shown how to declare a
procedural type, a pointer to function and finally how to call a function via pointer.
program Example;
typedef TMyFunctionType = function (dim param1, param2 as byte, dim
param3 as word) as word ' First, define the procedural type
dim MyPtr as ^TMyFunctionType
defined type
dim sample as word

' This is a pointer to previously

sub function Func1(dim p1, p2 as byte, dim p3 as word) as word ' Now,
define few functions which will be pointed to. Make sure that parameters match the type definition
result = p1 and p2 or p3
end sub

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sub function Func2(dim abc, def as byte, dim ghi as word) as word
'Another function of the same kind. Make sure that parameters match
the type definition
result = abc * def + ghi
end sub
sub function Func3(dim first, yellow as byte, dim monday as word) as
word
' Yet another function. Make sure that parameters match the
type definition
result = monday - yellow - first
end sub
' main program:
main:
MyPtr = @Func1
Sample = MyPtr^(1, 2, 3)
Func1, the return value is
MyPtr = @Func2
Sample = MyPtr^(1, 2, 3)
Func2, the return value is
MyPtr = @Func3
Sample = MyPtr^(1, 2, 3)
Func3, the return value is
end.

'
'
3
'
'
5
'
'
0

MyPtr now points to Func1
Perform function call via pointer, call
MyPtr now points to Func2
Perform function call via pointer, call
MyPtr now points to Func3
Perform function call via pointer, call

A function can return a complex type. Follow the example bellow to learn how to
declare and use a function which returns a complex type.

Example:
This example shows how to declare a function which returns a complex type.
program Example
structure TCircle
' Structure
dim CenterX, CenterY as word
dim Radius as byte
end structure
dim MyCircle as TCircle ' Global variable
sub function DefineCircle(dim x, y as word, dim r as byte) as TCircle
' DefineCircle function returns a Structure
result.CenterX = x
result.CenterY = y
result.Radius = r
end sub

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main:
MyCircle = DefineCircle(100, 200, 30) 'Get a Structure via function
call
MyCircle.CenterX = DefineCircle(100, 200, 30). CenterX + 20
'Access a Structure field via function call
'
|------------------------| |-----|
'
|
|
'
Function returns TCircle
Access to one
field of TCircle
end.

Forward declaration
A function can be declared without having it followed by it's implementation, by having it followed by the forward procedure. The effective implementation of that function must follow later in the module. The function can be used after a forward declaration as if it had been implemented already. The following is an example of a forward declaration:
program Volume
dim Volume as word
sub function First(a as word, b as word) as word forward
sub function Second(c as word) as word
dim tmp as word
tmp = First(2, 3)
result = tmp * c
end sub
sub function First(a, b as word) as word
result = a * b
end sub
main:
Volume = Second(4)
end.

Functions reentrancy
Functions reentrancy is allowed if the function has no parameters and local variables, or if the local variables are placed in the Rx space. Remember that the PIC
has stack and memory limitations which can varies greatly between MCUs.

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TYPES
Basic is strictly typed language, which means that every variable and constant need
to have a strictly defined type, known at the time of compilation.
The type serves:




to determine correct memory allocation required,
to interpret the bit patterns found in the object during subsequent accesses,
in many type-checking situations, to ensure that illegal assignments are
trapped.

mikroBasic PRO for PIC supports many standard (predefined) and user-defined
data types, including signed and unsigned integers of various sizes, arrays, strings,
pointers and structures.

Type Categories
Types can be divided into:






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simple types
arrays
strings
pointers
structures

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SIMPLE TYPES
Simple types represent types that cannot be divided into more basic elements and
are the model for representing elementary data on machine level. Basic memory
unit in mikroBasic PRO for PIC has 8 bits.
Here is an overview of simple types in mikroBasic PRO for PIC:
Type

Size

Range

byte, char

8–bit

0 .. 255

short

8–bit

-127 .. 128

word

16–bit

0 .. 65535

integer

16–bit

-32768 .. 32767

longword

32–bit

0 .. 4294967295

longint

32–bit

-2147483648 .. 2147483647

float

32–bit

±1.17549435082 * 10-38 ..
±6.80564774407 * 1038

bit

1–bit

0 or 1

sbit

1–bit

0 or 1

You can assign signed to unsigned or vice versa only using the explicit conversion.
Refer to Types Conversions for more information.

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ARRAYS
An array represents an indexed collection of elements of the same type (called the
base type). Since each element has a unique index, arrays, unlike sets, can meaningfully contain the same value more than once.

Array Declaration
Array types are denoted by constructions in the following form:
type[array_length]

Each of elements of an array is numbered from 0 through array_length - 1.
Every element of an array is of type and can be accessed by specifying array name
followed by element’s index within brackets.
Here are a few examples of array declaration:
dim weekdays as byte[7]
dim samples as word[50]
main:
' Now we can access elements of array variables, for example:
samples[0] = 1
if samples[37] = 0 then
' ...

Constant Arrays
Constant array is initialized by assigning it a comma-delimited sequence of values
within parentheses. For example:
' Declare a constant array which holds number of days in each month:
const MONTHS as byte[12] = (31,28,31,30,31,30,31,31,30,31,30,31)

Note that indexing is zero based; in the previous example, number of days in January is MONTHS[0] and number of days in December is MONTHS [11].
The number of assigned values must not exceed the specified length. Vice versa is
possible, when the trailing “excess” elements will be assigned zeroes.
For more information on arrays of char, refer to Strings.

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STRINGS
A string represents a sequence of characters equivalent to an array of char. It is
declared like this:
string[string_length]

The specifier string_length is a number of characters a string consists of. The
string is stored internally as the given sequence of characters plus a final null character (zero). This appended “stamp” does not count against string’s total length.
A null string ("") is stored as a single null character.
You can assign string literals or other strings to string variables. The string on the
right side of an assignment operator has to be shorter than another one, or of equal
length. For example:
dim msg1 as string[20]
dim msg2 as string[19]
main:
msg1 = "This is some message"
msg2 = "Yet another message"
msg1 = msg2

' this is ok, but vice versa would be illegal

Alternately, you can handle strings element–by–element. For example:
dim s as string[5]
' ...
s = "mik"
' s[0] is char literal "m"
' s[1] is char literal "i"
' s[2] is char literal "k"
' s[3] is zero
' s[4] is undefined
' s[5] is undefined

Be careful when handling strings in this way, since overwriting the end of a string will
cause an unpredictable behavior.
Note
mikroBasic PRO for PIC includes String Library which automatizes string related
tasks.

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POINTERS

A pointer is a data type which holds a memory address. While a variable accesses
that memory address directly, a pointer can be thought of as a reference to that
memory address.
To declare a pointer data type, add a carat prefix (^) before type. For example, if you
are creating a pointer to an integer, you would write:
^integer

To access the data at the pointer’s memory location, you add a carat after the variable name. For example, let’s declare variable p which points to word, and then
assign the pointed memory location value 5:
dim p as ^word
'...
p^ = 5

A pointer can be assigned to another pointer. However, note that only the address,
not the value, is copied. Once you modify the data located at one pointer, the other
pointer, when dereferenced, also yields modified data.

@ Operator
The @ operator constructs a pointer to its operand. The following rules are applied
to @:
 If X is a variable, @X returns a pointer to X.
Note: If variable X is of array type, the @ operator will return pointer to it's
first basic element, except when the left side of the statement in which X is
used is an array pointer. In this case, the @ operator will return pointer to
array, not to it's first basic element.
program example
dim w as word
ptr_b
as ^byte
ptr_arr as ^byte[10]
arr
as byte[10]
main:
ptr_b
= @arr ' @ operator will return ^byte
w
= @arr ' @ operator will return ^byte
ptr_arr = @arr ' @ operator will return ^byte[10]
end.

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If F is a routine (a function or procedure), @F returns a pointer to F.

Related topics: Pointer Arithmetic

STRUCTURES
A structure represents a heterogeneous set of elements. Each element is called a
member; the declaration of a structure type specifies a name and type for each
member. The syntax of a structure type declaration is
structure structname
dim member1 as type1
'...
dim membern as typen
end structure

where structname is a valid identifier, each type denotes a type, and each member is a valid identifier. The scope of a member identifier is limited to the structure
in which it occurs, so you don’t have to worry about naming conflicts between member identifiers and other variables.
For example, the following declaration creates a structure type called Dot:
structure Dot
dim x as float
dim y as float
end structures

Each Dot contains two members: x and y coordinates; memory is allocated when
you instantiate the structure, like this:
dim m, n as Dot

This variable declaration creates two instances of Dot, called m and n.
A member can be of the previously defined structure type. For example:
‘ Structure defining a circle:
structure Circle
dim radius as float
dim center as Dot
end structure

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Structure Member Access

You can access the members of a structure by means of dot (.) as a direct member
selector. If we had declared the variables circle1 and circle2 of the previously
defined type Circle:
dim circle1, circle2 as Circle

we could access their individual members like this:
circle1.radius = 3.7
circle1.center.x = 0
circle1.center.y = 0

You can also commit assignments between complex variables, if they are of the
same type:
circle2 = circle1

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' This will copy values of all members

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TYPES CONVERSIONS
Conversion of variable of one type to variable of another type is typecasting.
mikroBasic PRO for PIC supports both implicit and explicit conversions for built-in
types.

Implicit Conversion
Compiler will provide an automatic implicit conversion in the following situations:





statement requires an expression of particular type (according to language
definition), and we use an expression of different type,
operator requires an operand of particular type, and we use an operand of
different type,
function requires a formal parameter of particular type, and we pass it an
object of different type,
result does not match the declared function return type.

Promotion
When operands are of different types, implicit conversion promotes the less complex type to more complex type taking the following steps:
byte/char
short
short
integer
integral







word
integer
longint
longint
float

Higher bytes of extended unsigned operand are filled with zeroes. Higher bytes of
extended signed operand are filled with bit sign (if number is negative, fill higher
bytes with one, otherwise with zeroes). For example:
dim a as byte
dim b as word
'...
a = $FF
b = a ' a is promoted to word, b becomes $00FF

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Clipping

In assignments and statements that require an expression of particular type, destination will store the correct value only if it can properly represent the result of
expression, i.e. if the result fits in destination range.
If expression evaluates to a more complex type than expected, excess of data will
be simply clipped (higher bytes are lost).
dim i as byte
dim j as word
'...
j = $FF0F
i = j ' i becomes $0F, higher byte $FF is lost

Explicit Conversion
Explicit conversion can be executed at any point by inserting type keyword (byte,
word, short, integer, longint or float) ahead of an expression to be converted. The expression must be enclosed in parentheses. Explicit conversion can be
performed only on the operand left of the assignment operator
Special case is the conversion between signed and unsigned types. Explicit conversion between signed and unsigned data does not change binary representation of
data — it merely allows copying of source to destination.
For example:
dim a as byte
dim b as short
'...
b = -1
a = byte(b) ' a is 255, not 1
' This is because binary representation remains
' 11111111; it's just interpreted differently now

You cannot execute explicit conversion on the operand left of the assignment operator:
word(b) = a

174

' Compiler will report an error

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OPERATORS
Operators are tokens that trigger some computation when being applied to variables
and other objects in an expression.
There are four types of operators in in mikroBasic PRO for PIC:





Arithmetic Operators
Bitwise Operators
Boolean Operators
Relational Operators

OPERATORS PRECEDENCE AND ASSOCIATIVITY
There are 4 precedence categories in mikroBasic PRO for PIC. Operators in the
same category have equal precedence with each other.
Each category has an associativity rule: left-to-right () or right-to-left (). In the
absence of parentheses, these rules resolve the grouping of expressions with operators of equal precedence.
Precedence Operands

Operators

4

1

@

3

2

*

2

2

1

2

not
/

div
+

=

<>

+

Associativity


mod

<

and
or
>

<<

>>



xor
<=



>=



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ARITHMETIC OPERATORS

Arithmetic operators are used to perform mathematical computations. They have numerical operands and return numerical results. Since the char operators are technically
bytes, they can be also used as unsigned operands in arithmetic operations.
All arithmetic operators associate from left to right.
Operator

Operation

Operands

Result

+

addition

byte, short, word, byte, short, word,
integer,
longint, integer,
longint,
longword, float
longword, float

-

subtraction

byte, short, word, byte, short, word,
integer,
longint, integer, longint,
longword, float
longword, float

*

multiplication

byte, short, word, byte, short, word,
integer,
longint, integer,
longint,
longword, float
longword, float
byte,

short, word,
longint, float
longword, float

/

division, floating-point integer,

div

division, rounds down
integer,
to nearest integer
longword

mod

modulus, returns the
remainder of integer byte, short, word, byte, short, word,
longint, integer, longint,
division (cannot be integer,
longword
used with floating longword
points)

byte,

short, word, byte, short, word,
longint, integer, longint,
longword

Division by Zero
If 0 (zero) is used explicitly as the second operand (i.e. x div 0), the compiler will
report an error and will not generate code.
But in case of implicit division by zero: x div y, where y is 0 (zero), the result will
be the maximum integer (i.e 255, if the result is byte type; 65536, if the result is word
type, etc.).

Unary Arithmetic Operators
Operator - can be used as a prefix unary operator to change sign of a signed value.
Unary prefix operator + can be used, but it doesn’t affect data.
For example:
b = -a;

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RELATIONAL OPERATORS
Use relational operators to test equality or inequality of expressions. All relational
operators return TRUE or FALSE.
Operator

Operation

=

equal

<>

not equal

>

greater than

<

less than

>=

greater than or equal

<=

less than or equal

All relational operators associate from left to right.

Relational Operators in Expressions
The equal sign (=) can also be an assignment operator, depending on context.
Precedence of arithmetic and relational operators was designated in such a way to
allow complex expressions without parentheses to have expected meaning:
if aa + 5 >= bb - 1.0 / cc then
(1.0 / cc)) then
dd = My_Function()
end if

' same as: if (aa + 5) >= (bb -

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BITWISE OPERATORS

Use bitwise operators to modify individual bits of numerical operands.
Bitwise operators associate from left to right. The only exception is the bitwise complement operator not which associates from right to left.

Bitwise Operators Overview
Operator

Operation
bitwise AND; compares pairs of bits and generates a 1 result if
both bits are 1, otherwise it returns 0

and
or

bitwise (inclusive) OR; compares pairs of bits and generates a 1
result if either or both bits are 1, otherwise it returns 0

xor

bitwise exclusive OR (XOR); compares pairs of bits and generates a
1 result if the bits are complementary, otherwise it returns 0

not

bitwise complement (unary); inverts each bit

shl

bitwise shift left; moves the bits to the left, discards the far left bit
and assigns 0 to the right most bit.

shr

bitwise shift right; moves the bits to the right, discards the far right bit
and if unsigned assigns 0 to the left most bit, otherwise sign extends

Logical Operations on Bit Level
and 0

1

or

0

1

xor

0

1

0

0

0

0

0

1

0

0

1

1

0

1

1

1

1

1

1

0

not

0

1

1

0

The Bitwise operators and, or, and xor perform logical operations on the appropriate
pairs of bits of their operands. The operator not complements each bit of its operand. For
example:
$1234 and $5678

'equals $1230

' because ..
'$1234 : 0001 0010 0011 0100
'$5678 : 0101 0110 0111 1000
'----------------------------

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: 0001 0010 0011 0000

'.. that is, $1230

' Similarly:
$1234 or $5678
$1234 xor $5678
not $1234

'equals $567C
'equals $444C
'equals $EDCB

Unsigned and Conversions
If a number is converted from less complex to more complex data type, the upper
bytes are filled with zeroes. If a number is converted from more complex to less
complex data type, the data is simply truncated (the upper bytes are lost).
For example:
dim a
dim b
' ...
a =
b =
b =
' a

as byte
as word
$AA
$F0F0
b and a
is extended with zeroes; b becomes $00A0

Signed and Conversions
If number is converted from less complex to more complex data type, the upper
bytes are filled with ones if sign bit is 1 (number is negative); the upper bytes are
filled with zeroes if sign bit is 0 (number is positive). If number is converted from
more complex to less complex data type, the data is simply truncated (the upper
bytes are lost).
For example:
dim a
dim b
' ...
a =
b =
b =

as byte
as word
-12
$70FF
b and a

' a is sign extended, upper byte is $FF;
' b becomes $70F4

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Bitwise Shift Operators

The binary operators << and >> move the bits of the left operand by a number of
positions specified by the right operand, to the left or right, respectively. Right
operand has to be positive and less than 255.
With shift left (<<), left most bits are discarded, and “new” bits on the right are
assigned zeroes. Thus, shifting unsigned operand to the left by n positions is equivalent to multiplying it by 2n if all discarded bits are zero. This is also true for signed
operands if all discarded bits are equal to the sign bit.
With shift right (>>), right most bits are discarded, and the “freed” bits on the left are
assigned zeroes (in case of unsigned operand) or the value of the sign bit (in case
of signed operand). Shifting operand to the right by n positions is equivalent to dividing it by 2n.

BOOLEAN OPERATORS
Although mikroBasic PRO for PIC does not support boolean type, you have
Boolean operators at your disposal for building complex conditional expressions.
These operators conform to standard Boolean logic and return either TRUE (all ones)
or FALSE (zero):
Operator
and
or

Operation
logical AND
logical OR

xor

logical exclusive OR (XOR)

not

logical negation

Boolean operators associate from left to right. Negation operator not associates
from right to left.

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EXPRESSIONS
An expression is a sequence of operators, operands and punctuators that returns a
value.
The primary expressions include: literals, constants, variables and function calls.
More complex expressions can be created from primary expressions by using operators. Formally, expressions are defined recursively: subexpressions can be nested
up to the limits of memory.
Expressions are evaluated according to certain conversion, grouping, associativity
and precedence rules that depend on the operators used, presence of parentheses,
and data types of the operands. The precedence and associativity of the operators
are summarized in Operator Precedence and Associativity. The way operands and
subexpressions are grouped does not necessarily specify the actual order in which
they are evaluated by mikroBasic PRO for PIC.

STATEMENTS
Statements define algorithmic actions within a program. Each statement needs to
be terminated with a semicolon (;). In the absence of specific jump and selection
statements, statements are executed sequentially in the order of appearance in the
source code.
The most simple statements are assignments, procedure calls and jump statements. These can be combined to form loops, branches and other structured statements.
Refer to:





Assignment Statements
Conditional Statements
Iteration Statements (Loops)
Jump Statements



asm Statement

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ASSIGNMENT STATEMENTS
Assignment statements have the form:
variable = expression

The statement evaluates expression and assigns its value to variable. All the
rules of implicit conversion are applied. Variable can be any declared variable or
array element, and expression can be any expression.
Do not confuse the assignment with relational operator = which tests for equality.
mikroBasic PRO for PIC will interpret the meaning of the character = from the context

CONDITIONAL STATEMENTS
Conditional or selection statements select one of alternative courses of action by
testing certain values. There are two types of selection statements:
 if
 select case

If Statement
Use the keyword if to implement a conditional statement. The syntax of the if
statement has the following form:
if expression then
statements
[else
other statements]
end if

When expression evaluates to true, statements execute. If expression is false,
other statements execute. The expression must convert to a boolean type; otherwise, the condition is ill-formed. The else keyword with an alternate block of
statements (other statements) is optional.

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Nested if statements
Nested if statements require additional attention. A general rule is that the nested
conditionals are parsed starting from the innermost conditional, with each else
bound to the nearest available if on its left:
if expression1 then
if expression2 then
statement1
else
statement2
end if
end if

The compiler treats the construction in this way:
if expression1 then
if expression2 then
statement1
else
statement2
end if
end if

In order to force the compiler to interpret our example the other way around, we
have to write it explicitly:
if expression1 then
if expression2 then
statement1
end if
else
statement2
end if

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SELECT CASE STATEMENT
Use the select case statement to pass control to a specific program branch,
based on a certain condition. The select case statement consists of selector expression (condition) and list of possible values. The syntax of the select case statement
is:
select case selector
case value_1
statements_1
...
case value_n
statements_n
[case else
default_statements]
end select
selector is an expression which should evaluate as integral value. values can be
literals, constants, or expressions, and statements can be any statements. The
case else clause is optional.

First, the selector expression (condition) is evaluated. The select case statement then compares it against all available values. If the match is found, the
statements following the match evaluate, and the select case statement terminates. In case there are multiple matches, the first matching statement will be
executed. If none of the values matches the selector, then default_statements in the case else clause (if there is one) are executed.
Here is a simple example of the select case statement:
select case operator
case "*"
res = n1 * n2
case "/"
res = n1 / n2
case "+"
res = n1 + n2
case "-"
res = n1 - n2
case else
res = 0
cnt = cnt + 1
end select

Also, you can group values together for a match. Simply separate the items by commas:

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select case reg
case 0
opmode = 0
case 1,2,3,4
opmode = 1
case 5,6,7
opmode = 2
end select

Nested Case Statements
Note that the select case statements can be nested – values are
then assigned to the innermost enclosing select case statement.

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ITERATION STATEMENTS
Iteration statements let you loop a set of statements. There are three forms of iteration statements in mikroBasic PRO for PIC:
 for
 while
 do
You can use the statements break and continue to control the flow of a loop statement. break terminates the statement in which it occurs, while continue begins
executing the next iteration of the sequence.

FOR STATEMENT
The for statement implements an iterative loop and requires you to specify the
number of iterations. The syntax of the for statement is:
for counter = initial_value to final_value [step step_value]
statements
next counter
counter is a variable being increased by step_value with each iteration of the
loop. The parameter step_value is an optional integral value, and defaults to 1 if
omitted. Before the first iteration, counter is set to initial_value and will be
incremented until it reaches (or exceeds) the final_value. With each iteration,
statements will be executed.
initial_value and final_value should be expressions compatible with counter; statements can be any statements that do not change the value of counter.

Note that the parameter step_value may be negative, allowing you to create a
countdown.
Here is an example of calculating scalar product of two vectors, a and b, of length
n, using the for statement:
s = 0
for i = 0 to n-1
s = s + a[i] * b[i]
next i

Endless Loop
The for statement results in an endless loop if final_value equals or exceeds the
range of the counter’s type.

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WHILE STATEMENT
Use the while keyword to conditionally iterate a statement. The syntax of the while
statement is:
while expression
statements
wend
statements executed repeatedly as long as expression evaluates true. The test
takes place before statement are executed. Thus, if expression evaluates false on

the first pass, the loop does not execute.
Here is an example of calculating scalar product of two vectors, using the while
statement:
s = 0
i = 0;
while i < n
s = s + a[i] * b[i]
i = i + 1
wend

Probably the easiest way to create an endless loop is to use the statement:
while TRUE
' ...
wend

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DO STATEMENT
The do statement executes until the condition becomes true. The syntax of the do
statement is:
do
statements
loop until expression
statements are executed repeatedly until expression evaluates true. expression
is evaluated after each iteration, so the loop will execute statements at least once.

Here is an example of calculating scalar product of two vectors, using the do statement:
s = 0
i = 0
do
s = s + a[i] * b[i]
i = i + 1
loop until i = n

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JUMP STATEMENTS
A jump statement, when executed, transfers control unconditionally. There are five
such statements in in mikroBasic PRO for PIC:






break
continue
exit
goto
gosub

BREAK AND CONTINUE STATEMENTS
Break Statement
Sometimes, you might need to stop the loop from within its body. Use the break
statement within loops to pass control to the first statement following the innermost
loop (for, while, or do).
For example:
Lcd_Out(1, 1, "No card inserted")
' Wait for CF card to be plugged; refresh every second
while true
if Cf_Detect() = 1 then
break
end if
Delay_ms(1000)
wend
' Now we can work with CF card ...
Lcd_Out(1, 1, "Card detected
")

Continue Statement
You can use the continue statement within loops to “skip the cycle”:
 continue statement in for loop moves program counter to the line with key
word for
 continue statement in while loop moves program counter to the line with
loop condition (top of the loop,
 continue statement in do loop moves program counter to the line with
loop condition (top of the loop).

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‘ continue jumps here
for i := ...
...
continue;
...
next i

‘ continue jumps here
while condition
...
continue;
...
wend

do
...
continu
...
‘continue jumps here
loop until condition

EXIT STATEMENT
The exit statement allows you to break out of a routine (function or procedure). It
passes the control to the first statement following the routine call.
Here is a simple example:
sub procedure Proc1()
dim error as byte
... ' we're doing something here
if error = TRUE then
exit
end if
... ' some code, which won't be executed if error is true
end sub

Note: If breaking out of a function, return value will be the value of the local variable
result at the moment of exit.

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GOTO STATEMENT
Use the goto statement to unconditionally jump to a local label — for more information, refer to Labels. Syntax of goto statement is:
goto label_name

This will transfer control to the location of a local label specified by label_name. The
goto line can come before or after the label.
Label and goto statement must belong to the same block. Hence it is not possible
to jump into or out of a procedure or function.
You can use goto to break out from any level of nested control structures. Never
jump into a loop or other structured statement, since this can have unpredictable
effects.
The use of goto statement is generally discouraged as practically every algorithm
can be realized without it, resulting in legible structured programs. One possible
application of the goto statement is breaking out from deeply nested control structures:
for i = 0 to n
for j = 0 to m
...
if disaster
goto Error
end if
...
next j
next i
.
.
.
Error: ' error handling code

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GOSUB STATEMENT
Use the gosub statement to unconditionally jump to a local label — for more information, refer to Labels. The syntax of the gosub statement is:
gosub label_name
...
label_name:
...
return

This will transfer control to the location of a local label specified by label_name.
Also, the calling point is remembered. Upon encountering the return statement,
program execution will continue with the next statement (line) after gosub. The
gosub line can come before or after the label.
It is not possible to jump into or out of routine by means of gosub. Never jump into
a loop or other structured statement, since this can have unpredictable effects.
Note: Like with goto, the use of gosub statement is generally discouraged.
mikroBasic PRO for PIC supports gosub only for the sake of backward compatibility. It is better to rely on functions and procedures, creating legible structured programs.

asm STATEMENT
mikroBasic PRO for PIC allows embedding assembly in the source code by means
of the asm statement. Note that you cannot use numerals as absolute addresses for
register variables in assembly instructions. You may use symbolic names instead
(listing will display these names as well as addresses).
You can group assembly instructions with the asm keyword:
asm
block of assembly instructions
end asm

mikroBasic PRO for PIC comments are not allowed in embedded assembly code.
Instead, you may use one-line assembly comments starting with semicolon.
Note: Compiler doesn't expect memory banks to be changed inside the assembly
code. If the user wants to do this, then he must restore the previous bank selection.

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DIRECTIVES
Directives are words of special significance which provide additional functionality
regarding compilation and output.
The following directives are available for use:
 Compiler directives for conditional compilation,
 Linker directives for object distribution in memory.

COMPILER DIRECTIVES
Any line in source code with leading # is taken as a compiler directive. The initial #
can be preceded or followed by whitespace (excluding new lines). The compiler
directives are not case sensitive.
You can use conditional compilation to select particular sections of code to compile
while excluding other sections. All compiler directives must be completed in the
source file in which they begun.

Directives #DEFINE and #UNDEFINE
Use directive #DEFINE to define a conditional compiler constant (“flag”). You can use
any identifier for a flag, with no limitations. No conflicts with program identifiers are
possible because the flags have a separate name space. Only one flag can be set
per directive.
For example:
#DEFINE extended_format

Use #UNDEFINE to undefine (“clear”) previously defined flag.

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Directives #IFDEF, $IFNDEF, #ELSEIF and #ELSE
Conditional compilation is carried out by the #IFDEF and $IFNDEF directives.
#IFDEF tests whether a flag is currently defined, and $IFNDEF if the flag is not
defined; i.e. whether a previous #DEFINE directive has been processed for that flag
and is still in force.
Directives #IFDEF and $IFNDEF are terminated by the #ENDIF directive and can
have any number of the #ELSEIF clauses and an optional #ELSE clause:
#IFDEF flag THEN
block of code
[ #ELSEIF flag_1 THEN
block of code 1
...
#ELSEIF flag_n THEN
block of code n ]
[ #ELSE
alternate block of code ]
#ENDIF

First, $IFDEF checks if flag is defined by means of $DEFINE. If so, only block of
code will be compiled. Otherwise, the compiler will check flags flag_1 .. flag_n
and execute the appropriate block of code i. Eventually, if none of the flags is set,
alternate block of code in #ELSE (if any) will be compiled.
#ENDIF ends the conditional sequence. The result of the preceding scenario is that
only one section of code (possibly empty) is passed on for further processing. The
processed section can contain further conditional clauses, nested to any depth;
each #IFDEF must be matched with a closing #ENDIF.

Unlike $IFDEF, $IFNDEF checks if flag is not defined by means of $DEFINE, thus
producing the opposite results.
Here is an example:
' Uncomment the appropriate flag for your application:
'#DEFINE resolution8
'#DEFINE resolution10
'#DEFINE resolution12
#IFDEF resolution8 THEN
... ' code specific to 8-bit resolution
#ELSEIF resolution10 THEN
... ' code specific to 10-bit resolution
#ELSEIF resolution12 THEN
... ' code specific to 12-bit resolution

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#ELSE
... ' default code
#ENDIF

Predefined Flags
The compiler sets directives upon completion of project settings, so the user doesn't need to define certain flags.
Here is an example:
#IFDEF 16F887 ' If 16F887 MCU is selected
#IFNDEF 18F4550 ' If 18F4550 MCU is selected

See also predefined project level defines.

Linker Directives
mikroBasic PRO for PIC uses internal algorithm to distribute objects within memory.
If you need to have a variable or routine at the specific predefined address, use the
linker directives absolute and org.
Note: You must specify an even address when using the linker directives.

Directive absolute
The directive absolute specifies the starting address in RAM for a variable. If the
variable spans more than 1 word (16-bit), higher words will be stored at the consecutive locations.
The absolute directive is appended to the declaration of a variable:
dim x as word absolute 0x32
' Variable x will occupy 1 word (16 bits) at address 0x32
dim y as longint absolute 0x34
' Variable y will occupy 2 words at addresses 0x34 and 0x36

Be careful when using absolute directive, as you may overlap two variables by
accident. For example:
dim i as word absolute 0x42
' Variable i will occupy 1 word at address 0x42;
dim jj as longint absolute 0x40
' Variable will occupy 2 words at 0x40 and 0x42; thus,
' changing i changes jj at the same time and vice versa

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Note: You must specify an even address when using the directive absolute.

Directive org
The directive org specifies the starting address of a routine in ROM. It is appended to the declaration of routine. For example:
sub procedure proc(dim par as word) org 0x200
' Procedure will start at the address 0x200;
...
end sub

Note: You must specify an even address when using the directive org.

Directive orgall
Use the orgall directive to specify the address above which all routines, constants
will be placed. Example:
main:
orgall(0x200) ' All the routines, constants in main program will
be above the address 0x200
...
end.

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mikroBasic PRO for PIC
Libraries
mikroBasic PRO for PIC provides a set of libraries which simplify the initialization
and use of PIC compliant MCUs and their modules:
Use Library manager to include mikroBasic PRO for PIC Libraries in you project.

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Hardware PIC-specific Libraries
































ADC Library
CAN Library
CANSPI Library
Compact Flash Library
EEPROM Library
Ethernet PIC18FxxJ60 Library
Flash Memory Library
Graphic Lcd Library
I2C Library
Keypad Library
Lcd Library
Manchester Code Library
Multi Media Card library
OneWire Library
Port Expander Library
PS/2 Library
PWM Library
RS-485 Library
Software I2C Library
Software SPI Library
Software UART Library
Sound Library
SPI Library
SPI Ethernet Library
SPI Graphic Lcd Library
SPI Lcd Library
SPI Lcd8 Library
SPI T6963C Graphic Lcd Library
T6963C Graphic Lcd Library
UART Library
USB HID Library

Miscellaneous Libraries







Button Library
Conversions Library
Math Library
String Library
Time Library
Trigonometry Library

See also Built-in Routines.

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LIBRARY DEPENDENCIES
Certain libraries use (depend on) function and/or variables, constants defined in
other libraries.
Image below shows clear representation about these dependencies.
For example, SPI_Glcd uses Glcd_Fonts and Port_Expander library which uses SPI
library.
This means that if you check SPI_Glcd library in Library manager, all libraries on
which it depends will be checked too.

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Related topics: Library manager, 8051 Libraries

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Hardware Libraries
































ADC Library
CAN Library
CANSPI Library
Compact Flash Library
EEPROM Library
Ethernet PIC18FxxJ60 Library
Flash Memory Library
Graphic Lcd Library
I2C Library
Keypad Library
Lcd Library
Manchester Code Library
Multi Media Card library
OneWire Library
Port Expander Library
PS/2 Library
PWM Library
RS-485 Library
Software I2C Library
Software SPI Library
Software UART Library
Sound Library
SPI Library
SPI Ethernet Library
SPI Graphic Lcd Library
SPI Lcd Library
SPI Lcd8 Library
SPI T6963C Graphic Lcd Library
T6963C Graphic Lcd Library
UART Library
USB HID Library

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ADC LIBRARY

ADC (Analog to Digital Converter) module is available with a number of PIC MCUs. Library function Adc_Read is included to provide you comfortable work with the module.

Library Routines


ADC_Read

ADC_Read
Prototype

sub function ADC_Read(dim channel as byte) as word

Returns

10-bit unsigned value read from the specified channel
Initializes PIC’s internal ADC module to work with RC clock. Clock determines
the time period necessary for performing AD conversion (min 12TAD).

Description
Parameter channel represents the channel from which the analog value is to be
acquired. Refer to the appropriate datasheet for channel-to-pin mapping

202

Requires

Nothing.

Example

dim tmp as word
...
tmp = ADC_Read(2)

' Read analog value from channel 2

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Library Example
This example code reads analog value from channel 2 and displays it on PORTB
and PORTC.
program ADC_on_LEDs
dim adc_rd as word
main:
EBDIS_bit = 1
CMCON = CMCON or 0x07
ADCON1 = ADCON1 or 0x0C
TRISA2_bit = 1
TRISB = 0x00
TRISC = 0x00
while (TRUE)
adc_rd = ADC_Read(2)
PORTB = adc_rd
PORTC = Hi(adc_rd)
wend
end.

' set External Bus Disable bit
' turn off comparators
' Set AN2 channel pin as analog
'
input
' Set PORTB as output
' Set PORTC as output

' get ADC value from 2nd channel
' display adc_rd[7..0]
' display adc_rd[9..8]

HW Connection

ADC HW connection

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CAN LIBRARY

mikroBasic provides a library (driver) for working with the CAN module.
CAN is a very robust protocol that has error detection and signalling, self–checking
and fault confinement. Faulty CAN data and remote frames are re-transmitted automatically, similar to the Ethernet.
Data transfer rates vary from up to 1 Mbit/s at network lengths below 40m to 250
Kbit/s at 250m cables, and can go even lower at greater network distances, down
to 200Kbit/s, which is the minimum bitrate defined by the standard. Cables used are
shielded twisted pairs, and maximum cable length is 1000m.
CAN supports two message formats:



Standard format, with 11 identifier bits, and
Extended format, with 29 identifier bits

Note: Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.

Library Routines









CANSetOperationMode
CANGetOperationMode
CANInitialize
CANSetBaudRate
CANSetMask
CANSetFilter
CANRead
CANWrite

Following routines are for the internal use by compiler only:



RegsToCANID
CANIDToRegs

Be sure to check CAN constants necessary for using some of the functions

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CANSetOperationMode
Prototype

sub procedure CANSetOperationMode(dim mode, wait_flag as byte)

Returns

Nothing.
Sets CAN to requested mode, i.e. copies mode to CANSTAT. Parameter mode
needs to be one of CAN_OP_MODE constants (see CAN constants).
Parameter wait_flag needs to be either 0 or $FF:

Description



If set to $FF, this is a blocking call – the function won’t “return” until the
requested mode is set.
 If 0, this is a non-blocking call. It does not verify if CAN module is switched
to requested mode or not.
Caller must use CANGetOperationMode to verify correct operation mode before
performing mode specific operation.

Requires

Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.

Example

CANSetOperationMode(_CAN_MODE_CONFIG, $FF)

CANGetOperationMode
Prototype

sub function CANGetOperationMode as byte

Returns

Current opmode.

Description Function returns current operational mode of CAN module.
Requires

Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.

Example

if CANGetOperationMode = _CAN_MODE_NORMAL then
...

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CANInitialize
Prototype

sub procedure CANInitialize(dim SJW, BRP, PHSEG1, PHSEG2,
PROPSEG, CAN_CONFIG_FLAGS as byte)

Returns

Nothing.
Initializes CAN. All pending transmissions are aborted. Sets all mask registers
to 0 to allow all messages.
Filter registers are set according to flag value:

Description

if (CAN_CONFIG_FLAGS and _CAN_CONFIG_VALID_XTD_ MSG)<> 0
' Set all filters to XTD_MSG
else if (config and _CAN_CONFIG_VALID_STD_MSG) <> 0
' Set all filters to STD_MSG
else
' Set half of the filters to STD, and the rest to XTD_MSG.

Parameters:
 SJW as defined in 18XXX8 datasheet (1–4)
 BRP as defined in 18XXX8 datasheet (1–64)
 PHSEG1 as defined in 18XXX8 datasheet (1–8)
 PHSEG2 as defined in 18XXX8 datasheet (1–8)
 PROPSEG as defined in 18XXX8 datasheet (1–8)
 CAN_CONFIG_FLAGS is formed from predefined constants (see CAN constants)
CAN must be in Config mode; otherwise the function will be ignored.
Requires

Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.
init =

Example

_CAN_CONFIG_SAMPLE_THRICE
and
_CAN_CONFIG_PHSEG2_PRG_ON and
_CAN_CONFIG_STD_MSG
and
_CAN_CONFIG_DBL_BUFFER_ON and
_CAN_CONFIG_VALID_XTD_MSG and
_CAN_CONFIG_LINE_FILTER_OFF

...
CANInitialize(1,1,3,3,1,init)

206

‘Initialize CAN

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CANSetBaudRate
Prototype

sub procedure CANSetBaudRate(dim SJW, BRP, PHSEG1, PHSEG2,
PROPSEG, CAN_CONFIG_FLAGS as byte)

Returns

Nothing.
Sets CAN baud rate. Due to complexity of CAN protocol, you cannot simply
force a bps value. Instead, use this function when CAN is in Config mode. Refer
to datasheet for details.
Parameters:

Description








SJW as defined in 18XXX8 datasheet (1–4)
BRP as defined in 18XXX8 datasheet (1–64)
PHSEG1 as defined in 18XXX8 datasheet (1–8)
PHSEG2 as defined in 18XXX8 datasheet (1–8)
PROPSEG as defined in 18XXX8 datasheet (1–8)
CAN_CONFIG_FLAGS is formed from predefined constants (see CAN constants)

CAN must be in Config mode; otherwise the function will be ignored.
Requires

Example

Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.
init = _CAN_CONFIG_SAMPLE_THRICE and
_CAN_CONFIG_PHSEG2_PRG_ON
_CAN_CONFIG_STD_MSG
_CAN_CONFIG_DBL_BUFFER_ON
_CAN_CONFIG_VALID_XTD_MSG
_CAN_CONFIG_LINE_FILTER_OFF
...
CANSetBaudRate (1, 1, 3, 3, 1, init)

and
and
and
and

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CANSetMask
Prototype

sub procedure CANSetMask(dim CAN_MASK as byte, dim value
as longint, dim CAN_CONFIG_FLAGS as byte)

Returns

Nothing.
Function sets mask for advanced filtering of messages. Given value is bit
adjusted to appropriate buffer mask registers.
Parameters:

Description





CAN_MASK is one of predefined constant values (see CAN constants)
value is the mask register value
CAN_CONFIG_FLAGS selects type of message to filter, either
_CAN_CONFIG_XTD_MSG or _CAN_CONFIG_STD_MSG

CAN must be in Config mode; otherwise the function will be ignored.
Requires

Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.
' Set all mask bits to 1, i.e. all filtered bits are relevant:
CANSetMask(_CAN_MASK_B1, -1,_CAN_CONFIG_XTD_MSG)

Example
' Note that -1 is just a cheaper way to write $FFFFFFFF.
' Complement will do the trick and fill it up with ones.

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CANSetFilter
Prototype

sub procedure CANSetFilter(dim CAN_FILTER as byte, dim value as
longint, dim CAN_CONFIG_FLAGS as byte)

Returns

Nothing.
Function sets message filter. Given value is bit adjusted to appropriate buffer
mask registers.
Parameters:

Description




CAN_FILTER is one of predefined constant values (see CAN constants)
value is the filter register value
CAN_CONFIG_FLAGS selects type of message to filter, either
_CAN_CONFIG_XTD_MSG or _CAN_CONFIG_STD_MSG

CAN must be in Config mode; otherwise the function will be ignored.
Requires

Example

Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.
' Set id of filter B1_F1 to 3:
CANSetFilter(_CAN_FILTER_B1_F1, 3, _CAN_CONFIG_XTD_MSG)

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CANRead
Prototype

sub function CANRead(dim byref id as longint, dim byref data as
byte[8], dim byref datalen, CAN_RX_MSG_FLAGS as byte) as byte

Returns

Message from receive buffer or zero if no message found.
Function reads message from receive buffer. If at least one full receive buffer is
found, it is extracted and returned. If none found, function returns zero.
Parameters:

Description





id is message identifier
data is an array of bytes up to 8 bytes in length
datalen is data length, from 1–8.
CAN_RX_MSG_FLAGS is value formed from constants (see CAN constants)

CAN must be in mode in which receiving is possible.
Requires

Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.
dim len, rcv, rx as byte
dim id as longint
dim data as byte[8]

Example

210

' ...
rx = 0
' ...
rcv = CANRead(id, data, len, rx)

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CANWrite
Prototype

sub function CANWrite(dim id as longint, dim byref data as
byte[8], dim datalen, CAN_TX_MSG_FLAGS as byte) as byte

Returns

Returns zero if message cannot be queued (buffer full).
If at least one empty transmit buffer is found, function sends message on queue
for transmission. If buffer is full, function returns 0.
Parameters:

Description



id CAN message identifier. Only 11 or 29 bits may be used depending on





data is an array of bytes up to 8 bytes in length
datalen is data length, from 1–8.
CAN_RX_MSG_FLAGS is value formed from constants (see CAN constants)

message type (standard or extended)

CAN must be in Normal mode.
Requires

Microcontroller must be connected to CAN transceiver (MCP2551 or similar)
which is connected to CAN bus.
dim id as longint
dim tx, data as byte

Example

' ...
tx = _CAN_TX_PRIORITY_0 and
_CAN_TX_XTD_FRAME
' ...
CANWrite(id, data, 2, tx)

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CAN Constants

There is a number of constants predefined in CAN library. To be able to use the
library effectively, you need to be familiar with these. You might want to check the
example at the end of the chapter.

CAN_OP_MODE
CAN_OP_MODE
constants
define
CAN
operation
CANSetOperationMode expects one of these as its argument:
const
const
const
const
const
const

_CAN_MODE_BITS
_CAN_MODE_NORMAL
_CAN_MODE_SLEEP
_CAN_MODE_LOOP
_CAN_MODE_LISTEN
_CAN_MODE_CONFIG

=
=
=
=
=
=

$E0
0
$20
$40
$60
$80

mode.

Function

' Use it to access mode bits

CAN_CONFIG_FLAGS
CAN_CONFIG_FLAGS constants define flags related to CAN module configuration.
Functions CANInitialize and CANSetBaudRate expect one of these (or a bitwise
combination) as their argument:

212

const _CAN_CONFIG_DEFAULT

= $FF

' 11111111

const _CAN_CONFIG_PHSEG2_PRG_BIT
const _CAN_CONFIG_PHSEG2_PRG_ON
const _CAN_CONFIG_PHSEG2_PRG_OFF

= $01
= $FF
= $FE

' XXXXXXX1
' XXXXXXX0

const _CAN_CONFIG_LINE_FILTER_BIT
const _CAN_CONFIG_LINE_FILTER_ON
const _CAN_CONFIG_LINE_FILTER_OFF

= $02
= $FF
= $FD

' XXXXXX1X
' XXXXXX0X

const _CAN_CONFIG_SAMPLE_BIT
const _CAN_CONFIG_SAMPLE_ONCE
const _CAN_CONFIG_SAMPLE_THRICE

= $04
= $FF
= $FB

' XXXXX1XX
' XXXXX0XX

const _CAN_CONFIG_MSG_TYPE_BIT
const _CAN_CONFIG_STD_MSG
const _CAN_CONFIG_XTD_MSG

= $08
= $FF
= $F7

' XXXX1XXX
' XXXX0XXX

const
const
const
const

_CAN_CONFIG_DBL_BUFFER_BIT
_CAN_CONFIG_DBL_BUFFER_ON
_CAN_CONFIG_DBL_BUFFER_OFF
_CAN_CONFIG_MSG_BITS

=
=
=
=

$10
$FF
$EF
$60

' XXX1XXXX
' XXX0XXXX

const
const
const
const

_CAN_CONFIG_ALL_MSG
_CAN_CONFIG_VALID_XTD_MSG
_CAN_CONFIG_VALID_STD_MSG
_CAN_CONFIG_ALL_VALID_MSG

=
=
=
=

$FF
$DF
$BF
$9F

'
'
'
'

X11XXXXX
X10XXXXX
X01XXXXX
X00XXXXX

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You may use bitwise and to form config byte out of these values. For example:
init =

_CAN_CONFIG_SAMPLE_THRICE and
_CAN_CONFIG_PHSEG2_PRG_ON and
_CAN_CONFIG_STD_MSG
and
_CAN_CONFIG_DBL_BUFFER_ON and
_CAN_CONFIG_VALID_XTD_MSG and
_CAN_CONFIG_LINE_FILTER_OFF

...
CANInitialize(1, 1, 3, 3, 1, init)

' Initialize CAN

CAN_TX_MSG_FLAGS
CAN_TX_MSG_FLAGS are flags related to transmission of a CAN message:
const
const
const
const
const

_CAN_TX_PRIORITY_BITS
_CAN_TX_PRIORITY_0
_CAN_TX_PRIORITY_1
_CAN_TX_PRIORITY_2
_CAN_TX_PRIORITY_3

=
=
=
=
=

$03
$FC
$FD
$FE
$FF

'
'
'
'

XXXXXX00
XXXXXX01
XXXXXX10
XXXXXX11

const _CAN_TX_FRAME_BIT
const _CAN_TX_STD_FRAME
const _CAN_TX_XTD_FRAME

= $08
= $FF
= $F7

' XXXXX1XX
' XXXXX0XX

const _CAN_TX_RTR_BIT
const _CAN_TX_NO_RTR_FRAME
const _CAN_TX_RTR_FRAME

= $40
= $FF
= $BF

' X1XXXXXX
' X0XXXXXX

You may use bitwise and to adjust the appropriate flags. For example:
' form value to be used with CANSendMessage:
send_config = _CAN_TX_PRIORITY_0 and
_CAN_TX_XTD_FRAME
and
_CAN_TX_NO_RTR_FRAME;
...
CANSendMessage(id, data, 1, send_config)

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CAN_RX_MSG_FLAGS

CAN_RX_MSG_FLAGS are flags related to reception of CAN message. If a particular bit
is set; corresponding meaning is TRUE or else it will be FALSE.
const
const
const
const
const
const
const
const
const
const
const
const

_CAN_RX_FILTER_BITS
_CAN_RX_FILTER_1
_CAN_RX_FILTER_2
_CAN_RX_FILTER_3
_CAN_RX_FILTER_4
_CAN_RX_FILTER_5
_CAN_RX_FILTER_6
_CAN_RX_OVERFLOW
_CAN_RX_INVALID_MSG
_CAN_RX_XTD_FRAME
_CAN_RX_RTR_FRAME
_CAN_RX_DBL_BUFFERED

=
=
=
=
=
=
=
=
=
=
=
=

$07
$00
$01
$02
$03
$04
$05
$08
$10
$20
$40
$80

'Use it to access filter

bits

' Set if Overflowed; else clear
' Set if invalid; else clear
' Set if XTD message; else clear
' Set if RTR message; else clear
' Set if message was
' hardware double-buffered

You may use bitwise and to adjust the appropriate flags. For example:
if (MsgFlag and CAN_RX_OVERFLOW) = 0 then
...
' Receiver overflow has occurred.
' We have lost our previous message.

CAN_MASK
CAN_MASK constants define mask codes. Function
these as its argument:
const CAN_MASK_B1
const CAN_MASK_B2

CANSetMask expects one of

= 0
= 1

CAN_FILTER
CAN_FILTER constants define filter codes. Function CANSetFilter expects one of

these as its argument:
const
const
const
const
const
const

214

_CAN_FILTER_B1_F1
_CAN_FILTER_B1_F2
_CAN_FILTER_B2_F1
_CAN_FILTER_B2_F2
_CAN_FILTER_B2_F3
_CAN_FILTER_B2_F4

=
=
=
=
=
=

0
1
2
3
4
5

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Library Example
This is a simple demonstration of CAN Library routines usage. First node initiates
the communication with the second node by sending some data to its address. The
second node responds by sending back the data incremented by 1. First node then
does the same and sends incremented data back to second node, etc.
Code for the first CANSPI node:
program CAN_1st
dim Can_Init_Flags, Can_Send_Flags, Can_Rcv_Flags as byte ' can flags
Rx_Data_Len as byte
' received data length in bytes
RxTx_Data as byte[8]
' can rx/tx data buffer
Msg_Rcvd as byte
' reception flag
ID_1st, ID_2nd as longint
' node IDs
Rx_ID as longint
main:
PORTC = 0
TRISC = 0
Can_Init_Flags = 0
Can_Send_Flags = 0
Can_Rcv_Flags = 0

' clear PORTC
' set PORTC as output
'
' clear flags
'

Can_Send_Flags = _CAN_TX_PRIORITY_0 and
_CAN_TX_XTD_FRAME and
_CAN_TX_NO_RTR_FRAME

' form value to be used
'
with CANWrite

Can_Init_Flags = _CAN_CONFIG_SAMPLE_THRICE and 'form value to be
used
_CAN_CONFIG_PHSEG2_PRG_ON and 'with CANInit
_CAN_CONFIG_XTD_MSG and
_CAN_CONFIG_DBL_BUFFER_ON and
_CAN_CONFIG_VALID_XTD_MSG
ID_1st = 12111
ID_2nd = 3
RxTx_Data[0] = 9
' set initial data to be sent
CANInitialize(1,3,3,3,1,Can_Init_Flags)
' Initialize CAN module
CANSetOperationMode(_CAN_MODE_CONFIG,0xFF) ' set CONFIGURATION mode
CANSetMask(_CAN_MASK_B1,-1,_CAN_CONFIG_XTD_MSG) ' set all mask1 bits
to ones
CANSetMask(_CAN_MASK_B2,-1,_CAN_CONFIG_XTD_MSG) ' set all mask2 bits
to ones
CANSetFilter(_CAN_FILTER_B2_F4,ID_2nd,_CAN_CONFIG_XTD_MSG) 'set id
of filter B2_F4 to 2nd node ID
CANSetOperationMode(_CAN_MODE_NORMAL,0xFF)

'set NORMAL mode

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CANWrite(ID_1st, RxTx_Data, 1, Can_Send_Flags 'send initial message
while TRUE
Msg_Rcvd = CANRead(Rx_ID , RxTx_Data , Rx_Data_Len, Can_Rcv_Flags)
if ((Rx_ID = ID_2nd) and (Msg_Rcvd <> 0)) <> 0 then
PORTC = RxTx_Data[0]
' output data at PORTC
RxTx_Data[0] = RxTx_Data[0] + 1
Delay_ms(10)
CANWrite(ID_1st, RxTx_Data, 1, Can_Send_Flags) ' send incremented data back
end if
wend
end.

Code for the second CANSPI node:
program CAN_2nd
dim Can_Init_Flags, Can_Send_Flags, Can_Rcv_Flags as byte 'CAN flags
Rx_Data_Len as byte
' received data length in bytes
RxTx_Data as byte[8]
' can rx/tx data buffer
Msg_Rcvd as byte
' reception flag
ID_1st, ID_2nd as longin ' node IDs
Rx_ID as longint
main:
PORTC = 0
TRISC = 0
Can_Init_Flags = 0
Can_Send_Flags = 0
Can_Rcv_Flags = 0

' clear PORTC
' set PORTC as output
'
' clear flags
'

Can_Send_Flags = _CAN_TX_PRIORITY_0 and ' form value to be used
_CAN_TX_XTD_FRAME and ' with CANWrite
_CAN_TX_NO_RTR_FRAME
Can_Init_Flags = _CAN_CONFIG_SAMPLE_THRICE and ' form value to be
used
_CAN_CONFIG_PHSEG2_PRG_ON and 'with CANInit
_CAN_CONFIG_XTD_MSG and
_CAN_CONFIG_DBL_BUFFER_ON and
_CAN_CONFIG_VALID_XTD_MSG and
_CAN_CONFIG_LINE_FILTER_OFF
ID_1st = 12111
ID_2nd = 3
RxTx_Data[0] = 9
' set initial data to be sent

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CANInitialize(1,3,3,3,1,Can_Init_Flags ' initialize external CAN
module
CANSetOperationMode(_CAN_MODE_CONFIG,0xFF) ' set CONFIGURATION
mode
CANSetMask(_CAN_MASK_B1,-1,_CAN_CONFIG_XTD_MSG) ' set all mask1
bits to ones
CANSetMask(_CAN_MASK_B2,-1,_CAN_CONFIG_XTD_MSG)
' set all mask2
bits to ones
CANSetFilter(_CAN_FILTER_B2_F3,ID_1st,_CAN_CONFIG_XTD_MSG) ' set
id of filter B2_F3 to 1st node ID
CANSetOperationMode(_CAN_MODE_NORMAL,0xFF)

' set NORMAL mode

while true
' endless loop
Msg_Rcvd = CANRead(Rx_ID , RxTx_Data , Rx_Data_Len, Can_Rcv_
Flags)
' receive message
if ((Rx_ID = ID_1st) and (Msg_Rcvd <> 0)) <> 0 then ' if message
received check id
PORTC = RxTx_Data[0]
' id correct, output data at PORTC
Inc(RxTx_Data[0])
' increment received data
CANWrite(ID_2nd, RxTx_Data, 1, Can_Send_Flags)' send incremented data back
end if
wend
end.

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HW Connection

Example of interfacing CAN transceiver with MCU and bus.

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CANSPI LIBRARY
The SPI module is available with a number of the PIC compliant MCUs. The
mikroBasic PRO for PIC provides a library (driver) for working with mikroElektronika's CANSPI Add-on boards (with MCP2515 or MCP2510) via SPI interface.
The CAN is a very robust protocol that has error detection and signalization,
self–checking and fault confinement. Faulty CAN data and remote frames are retransmitted automatically, similar to the Ethernet.
Data transfer rates depend on distance. For example, 1 Mbit/s can be achieved at
network lengths below 40m while 250 Kbit/s can be achieved at network lengths
below 250m. The greater distance the lower maximum bitrate that can be achieved.
The lowest bitrate defined by the standard is 200Kbit/s. Cables used are shielded
twisted pairs.
CAN supports two message formats:



Standard format, with 11 identifier bits and
Extended format, with 29 identifier bits

Note:



Consult the CAN standard about CAN bus termination resistance.
An effective CANSPI communication speed depends on SPI and certainly is
slower than “real” CAN.
 The library uses the SPI module for communication. User must initialize SPI
module before using the SPI Graphic Lcd Library.
For MCUs with two SPI modules it is possible to initialize both of them and
then switch by using the SPI_Set_Active routine.
 CANSPI module refers to mikroElektronika's CANSPI Add-on board connect
ed to SPI module of MCU.

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External dependecies of CANSPI Library
The following variables
must be defined in all
projects using CANSPI
Library:

Description:

Example :

dim CanSpi_CS as sbit
sfr external

Chip Select line.

dim CanSpi_CS as sbit
at RC0_bit

dim CanSpi_Rst as
sbit sfr external

Reset line.

dim CanSpi_Rst as
sbit at RC2_bit

dim
CanSpi_CS_Direction
as sbit sfr external

Direction of the
Chip Select pin.

dim
CanSpi_CS_Direction
as sbit at
TRISC0_bit

dim
dim
CanSpi_Rst_Bit_Dire
CanSpi_Rst_Bit_Direc
ction as sbit sfr
Direction of the Reset pin. tion as sbit at
TRISC2_bit
external

Library Routines









CANSPISetOperationMode
CANSPIGetOperationMode
CANSPIInitialize
CANSPISetBaudRate
CANSPISetMask
CANSPISetFilter
CANSPIread
CANSPIWrite

The following routines are for an internal use by the library only:



RegsToCANSPIID
CANSPIIDToRegs

Be sure to check CANSPI constants necessary for using some of the sub functions.

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CANSPISetOperationMode
Prototype

sub procedure CANSPISetOperationMode(dim mode as byte, dim WAIT
as byte)

Returns

Nothing.
Sets the CANSPI module to requested mode.
Parameters :


mode: CANSPI module operation mode. Valid values: CANSPI_OP_MODE
constants (see CANSPI constants).
Description
 WAIT: CANSPI mode switching verification request. If WAIT = 0, the call is
non-blocking. The sub function does not verify if the CANSPI module is
switched to requested mode or not. Caller must use CANSPIGetOperationMode
to verify correct operation mode before performing mode specific operation. If WAIT
!= 0, the call is blocking – the sub function won’t “return” until the requested mode
is set.

The CANSPI routines are supported only by MCUs with the SPI module.
Requires

Example

MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.
' set the CANSPI module into configuration mode (wait inside
CANSPISetOperationMode until this mode is set)
CANSPISetOperationMode(_CANSPI_MODE_CONFIG, 0xFF)

CANSPIGetOperationMode
Prototype

sub function CANSPIGetOperationMode() as byte

Returns

Current operation mode.

The sub function returns current operation mode of the CANSPI module. Check
Description CANSPI_OP_MODE constants (see CANSPI constants) or device datasheet for
operation mode codes.
The CANSPI routines are supported only by MCUs with the SPI module.
Requires

Example

MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.
' check whether the CANSPI module is in Normal mode and if it is
do something.
if (CANSPIGetOperationMode() = _CANSPI_MODE_NORMAL) then
...
end if

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CANSPIInitialize
Prototype

sub procedure CANSPIInitialize(dim SJW as byte, dim BRP as byte,
dim PHSEG1 as byte, dim PHSEG2 as byte, dim PROPSEG as byte, dim
CANSPI_CONFIG_FLAGS as byte)

Returns

Nothing.
Initializes the CANSPI module.

Stand-Alone CAN controller in the CANSPI module is set to:
 Disable CAN capture
 Continue CAN operation in Idle mode
 Do not abort pending transmissions
 Fcan clock: 4*Tcy (Fosc)
 Baud rate is set according to given parameters
 CAN mode: Normal
 Filter and mask registers IDs are set to zero
 Filter and mask message frame type is set according to CAN_CONFIG_FLAGS
Description
value
SAM,SEG2PHTS,WAKFIL and DBEN bits are set according to CAN_CONFIG_FLAGS value.

Parameters:
 SJW as defined in CAN controller's datasheet
 BRP as defined in CAN controller's datasheet
 PHSEG1 as defined in CAN controller's datasheet
 PHSEG2 as defined in CAN controller's datasheet
 PROPSEG as defined in CAN controller's datasheet
 CAN_CONFIG_FLAGS is formed from predefined constants (see CANSPI con
stants)
Global variables :
 CanSpi_CS: Chip Select line
 CanSpi_Rst: Reset line
 CanSpi_CS_Bit_Direction: Direction of the Chip Select pin
 CanSpi_Rst_Bit_Direction: Direction of the Reset pin
Requires

must be defined before using this function.
The CANSPI routines are supported only by MCUs with the SPI module.
The SPI module needs to be initialized. See the SPI1_Init and SPI1_Init_Advanced
routines.
MCU has to be properly connected to mikroElektronika's CANSPI Extra Board or
similar hardware. See connection example at the bottom of this page.

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' CANSPI module connections
dim CanSpi_CS
as sbit at RC0_bit
CanSpi_CS_Direction as sbit at TRISC0_bit
CanSpi_Rst as sbit at RC2_bit
CanSpi_Rst_Direction as sbit at TRISC2_bit
' End CANSPI module connections
...

Example

dim Can_Init_Flags as byte
...
Can_Init_Flags = _CANSPI_CONFIG_SAMPLE_THRICE and ' form value
to be used
_CANSPI_CONFIG_PHSEG2_PRG_ON and ' with
CANSPIInitialize
_CANSPI_CONFIG_XTD_MSG
and
_CANSPI_CONFIG_DBL_BUFFER_ON and
_CANSPI_CONFIG_VALID_XTD_MSG
...
SPI1_Init()
' initialize SPI module
CANSPIInitialize(1,3,3,3,1,Can_Init_Flags) ' initialize external CANSPI module

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CANSPISetBaudRate
Prototype

sub procedure CANSPISetBaudRate(dim SJW as byte, dim BRP as byte,
dim PHSEG1 as byte, dim PHSEG2 as byte, dim PROPSEG as byte, dim
CANSPI_CONFIG_FLAGS as byte)

Returns

Nothing.
Sets the CANSPI module baud rate. Due to complexity of the CAN protocol,
you can not simply force a bps value. Instead, use this sub function when the
CANSPI module is in Config mode.
SAM, SEG2PHTS and WAKFIL bits are set according to CANSPI_CONFIG_FLAGS

value. Refer to datasheet for details.
Description Parameters:
 SJW as defined in CAN controller's datasheet
 BRP as defined in CAN controller's datasheet
 PHSEG1 as defined in CAN controller's datasheet
 PHSEG2 as defined in CAN controller's datasheet
 PROPSEG as defined in CAN controller's datasheet
 CAN_CONFIG_FLAGS is formed from predefined constants (see CANSPI con
stants)
The CANSPI module must be in Config mode, otherwise the sub function will be
ignored. See CANSPISetOperationMode.
Requires

The CANSPI routines are supported only by MCUs with the SPI module.
MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.

Example

224

' set required baud rate and sampling rules
dim can_config_flags as byte
...
CANSPISetOperationMode(_CANSPI_MODE_CONFIG, 0xFF)
' set CONFIGURATION mode (CANSPI module mast be in config mode for baud rate
settings)
can_config_flags = _CANSPI_CONFIG_SAMPLE_THRICE and
_CANSPI_CONFIG_PHSEG2_PRG_ON and
_CANSPI_CONFIG_STD_MSG
and
_CANSPI_CONFIG_DBL_BUFFER_ON and
_CANSPI_CONFIG_VALID_XTD_MSG and
_CANSPI_CONFIG_LINE_FILTER_OFF
CANSPISetBaudRate(1, 1, 3, 3, 1, can_config_flags)

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CANSPISetMask
Prototype

sub procedure CANSPISetMask(dim CANSPI_MASK as byte, dim val as
longint, dim CANSPI_CONFIG_FLAGS as byte)

Returns

Nothing.
Configures mask for advanced filtering of messages. The parameter value is
bit-adjusted to the appropriate mask registers.
Parameters:


Description

CAN_MASK: CANSPI module mask number. Valid values: CANSPI_MASK
costants (see CANSPI constants)
 val: mask register value
 CAN_CONFIG_FLAGS: selects type of message to filter. Valid values:
_CANSPI_CONFIG_ALL_VALID_MSG,
_CANSPI_CONFIG_MATCH_MSG_TYPE and CANSPI_CONFIG_STD_MSG,
_CANSPI_CONFIG_MATCH_MSG_TYPE and CANSPI_CONFIG_XTD_MSG.

(see CANSPI constants)
The CANSPI module must be in Config mode, otherwise the sub function will be
ignored. See CANSPISetOperationMode.
Requires

The CANSPI routines are supported only by MCUs with the SPI module.
MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.
' set the appropriate filter mask and message type value
CANSPISetOperationMode(_CANSPI_MODE_CONFIG,0xFF) ' set CONFIGURATION mode (CANSPI module must be in config mode for mask settings)

Example

' Set all B1 mask bits to 1 (all filtered bits are relevant):
' Note that -1 is just a cheaper way to write 0xFFFFFFFF.
' Complement will do the trick and fill it up with ones.
CANSPISetMask(_CANSPI_MASK_B1, -1, _CANSPI_CONFIG_MATCH_MSG_TYPE
and _CANSPI_CONFIG_XTD_MSG)

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CANSPISetFilter
Prototype

sub procedure CANSPISetFilter(dim CANSPI_FILTER as byte, dim val
as longint, dim CANSPI_CONFIG_FLAGS as byte)

Returns

Nothing.
Configures message filter. The parameter value is bit-adjusted to the appropriate filter registers.
Parameters:
 CAN_FILTER: CANSPI module filter number. Valid values: CANSPI_FILTER

Description




constants (see CANSPI constants)
val: filter register value
CAN_CONFIG_FLAGS: selects type of message to filter. Valid values:
_CANSPI_CONFIG_ALL_VALID_MSG,
_CANSPI_CONFIG_MATCH_MSG_TYPE and CANSPI_CONFIG_STD_MSG,
_CANSPI_CONFIG_MATCH_MSG_TYPE and CANSPI_CONFIG_XTD_MSG.

(see CANSPI constants)

The CANSPI module must be in Config mode, otherwise the function will be
ignored. See CANSPISetOperationMode.
Requires

The CANSPI routines are supported only by MCUs with the SPI module.
MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.

Example

' set the appropriate filter value and message type
CANSPISetOperationMode(_CANSPI_MODE_CONFIG,0xFF)
' set CONFIGURATION mode (CANSPI module must be in config mode
for filter settings)
' Set id of filter B1_F1 to 3:
CANSPISetFilter(_CANSPI_FILTER_B1_F1, 3, _CANSPI_CONFIG_XTD_MSG)

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CANSPIRead
Prototype

sub function CANSPIRead(dim byref id as longint, dim byref
rd_data as byte[8], dim data_len as byte, dim CANSPI_RX_MSG_FLAGS
as byte) as byte



Returns

0 if nothing is received
0xFF if one of the Receive Buffers is full (message received)

If at least one full Receive Buffer is found, it will be processed in the following
way:
 Message ID is retrieved and stored to location provided by the id parameter
 Message data is retrieved and stored to a buffer provided by the rd_data parameter
 Message length is retrieved and stored to location provided by the
data_len parameter
Description  Message flags are retrieved and stored to location provided by the
CAN_RX_MSG_FLAGS parameter
Parameters:





id: message identifier storage address
rd_data: data buffer (an array of bytes up to 8 bytes in length)
data_len: data length storage address.
CAN_RX_MSG_FLAGS: message flags storage address

The CANSPI module must be in a mode in which receiving is possible. See
CANSPISetOperationMode.
Requires

The CANSPI routines are supported only by MCUs with the SPI module.
MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.

Example

' check the CANSPI module for received messages. If any was
received do something.
dim msg_rcvd, rx_flags, data_len as byte
rd_data as byte[8]
msg_id as longint
...
CANSPISetOperationMode(_CANSPI_MODE_NORMAL,0xFF)
' set NORMAL
mode (CANSPI module must be in mode in which receive is possible)
...
rx_flags = 0
' clear message flags
if (msg_rcvd = CANSPIRead(msg_id, rd_data, data_len, rx_flags)
...
end if

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CANSPIWrite
Prototype

Returns

sub function CANSPIWrite(dim id as longint, dim byref wr_data as
byte[8], dim data_len as byte, dim CANSPI_TX_MSG_FLAGS as byte)
as byte



0 if all Transmit Buffers are busy
0xFF if at least one Transmit Buffer is available

If at least one empty Transmit Buffer is found, the function sends message in
the queue for transmission.
Parameters:
Description



id:CAN message identifier. Valid values: 11 or 29 bit values, depending





wr_data: data to be sent (an array of bytes up to 8 bytes in length)
data_len: data length. Valid values: 1 to 8
CAN_RX_MSG_FLAGS: message flags

on message type (standard or extended)

The CANSPI module must be in mode in which transmission is possible. See
CANSPISetOperationMode.
Requires

The CANSPI routines are supported only by MCUs with the SPI module.
MCU has to be properly connected to mikroElektronika's CANSPI Extra Board
or similar hardware. See connection example at the bottom of this page.

Example

' send message extended CAN message with the appropriate ID and
data
dim tx_flags as byte
rd_data as byte[8]
msg_id as longint
...
CANSPISetOperationMode(_CANSPI_MODE_NORMAL, 0xFF)
' set NORMAL mode (CANSPI must be in mode in which transmission
is possible)
tx_flags = _CANSPI_TX_PRIORITY_0 ands _CANSPI_TX_XTD_FRAME
' set message flags
CANSPIWrite(msg_id, rd_data, 2, tx_flags)

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CANSPI Constants
There is a number of constants predefined in the CANSPI library. You need to be
familiar with them in order to be able to use the library effectively. Check the example at the end of the chapter.

CANSPI_OP_MODE
The CANSPI_OP_MODE constants define CANSPI operation mode. Function
CANSPISetOperationMode expects one of these as it's argument:
const
_CANSPI_MODE_BITS as byte = 0xE0 Use this to access opmode
_CANSPI_MODE_NORMAL as byte = 0x00
_CANSPI_MODE_SLEEP as byte = 0x20
_CANSPI_MODE_LOOP
as byte = 0x40
_CANSPI_MODE_LISTEN as byte = 0x60
_CANSPI_MODE_CONFIG as byte = 0x80

bits

CANSPI_CONFIG_FLAGS
The CANSPI_CONFIG_FLAGS constants define flags related to the CANSPI module configuration. The functions CANSPIInitialize, CANSPISetBaudRate,
CANSPISetMask and CANSPISetFilter expect one of these (or a bitwise combination) as their argument:
const
_CANSPI_CONFIG_DEFAULT

as byte

= $FF

' 11111111

_CANSPI_CONFIG_PHSEG2_PRG_BIT
_CANSPI_CONFIG_PHSEG2_PRG_ON
_CANSPI_CONFIG_PHSEG2_PRG_OFF

as byte
as byte
as byte

= $01
= $FF
= $FE

' XXXXXXX1
' XXXXXXX0

_CANSPI_CONFIG_LINE_FILTER_BIT
_CANSPI_CONFIG_LINE_FILTER_ON
_CANSPI_CONFIG_LINE_FILTER_OFF

as byte = $02
as byte = $FF
as byte = $FD

' XXXXXX1X
' XXXXXX0X

_CANSPI_CONFIG_SAMPLE_BIT
_CANSPI_CONFIG_SAMPLE_ONCE
_CANSPI_CONFIG_SAMPLE_THRICE

as byte = $04
as byte = $FF
as byte = $FB

' XXXXX1XX
' XXXXX0XX

_CANSPI_CONFIG_MSG_TYPE_BIT
_CANSPI_CONFIG_STD_MSG
_CANSPI_CONFIG_XTD_MSG

as byte = $08
as byte = $FF
as byte = $F7

' XXXX1XXX
' XXXX0XXX

_CANSPI_CONFIG_DBL_BUFFER_BIT
_CANSPI_CONFIG_DBL_BUFFER_ON

as byte = $10
as byte = $FF ' XXX1XXXX

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_CANSPI_CONFIG_DBL_BUFFER_OFF as byte = $EF
as
as
as
as
as

_CANSPI_CONFIG_MSG_BITS
_CANSPI_CONFIG_ALL_MSG
_CANSPI_CONFIG_VALID_XTD_MSG
_CANSPI_CONFIG_VALID_STD_MSG
_CANSPI_CONFIG_ALL_VALID_MSG

byte
byte
byte
byte
byte

=
=
=
=
=

$60
$FF
$DF
$BF
$9F

' XXX0XXXX

'
'
'
'

X11XXXXX
X10XXXXX
X01XXXXX
X00XXXXX

You may use bitwise and to form config byte out of these values. For example:
init

= _CANSPI_CONFIG_SAMPLE_THRICE
and
_CANSPI_CONFIG_PHSEG2_PRG_ON and
_CANSPI_CONFIG_STD_MSG
and
_CANSPI_CONFIG_DBL_BUFFER_ON
and
_CANSPI_CONFIG_VALID_XTD_MSG
and
_CANSPI_CONFIG_LINE_FILTER_OFF

...
CANSPIInit(1, 1, 3, 3, 1, init)

' initialize CANSPI

CANSPI_TX_MSG_FLAGS
CANSPI_TX_MSG_FLAGS are flags related to transmission of a CAN message:
const
_CANSPI_TX_PRIORITY_BITS
_CANSPI_TX_PRIORITY_0
_CANSPI_TX_PRIORITY_1
_CANSPI_TX_PRIORITY_2
_CANSPI_TX_PRIORITY_3

as
as
as
as
as

byte
byte
byte
byte
byte

=
=
=
=
=

$03
$FC
$FD
$FE
$FF

_CANSPI_TX_FRAME_BIT
_CANSPI_TX_STD_FRAME
_CANSPI_TX_XTD_FRAME

as byte
as byte
as byte

= $08
= $FF
= $F7

_CANSPI_TX_RTR_BIT
_CANSPI_TX_NO_RTR_FRAME
_CANSPI_TX_RTR_FRAME

as byte
as byte
as byte

= $40
= $FF
= $BF

'
'
'
'

XXXXXX00
XXXXXX01
XXXXXX10
XXXXXX11

' XXXXX1XX
' XXXXX0XX

' X1XXXXXX
' X0XXXXXX

You may use bitwise and to adjust the appropriate flags. For example:
' form value to be used with CANSendMessage:
send_config = _CANSPI_TX_PRIORITY_0
and
_CANSPI_TX_XTD_FRAME
and
_CANSPI_TX_NO_RTR_FRAME
...
CANSPI1Write(id, data, 1, send_config)

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CANSPI_RX_MSG_FLAGS
CANSPI_RX_MSG_FLAGS are flags related to reception of CAN message. If a particular bit is set then corresponding meaning is TRUE or else it will be FALSE.
const
_CANSPI_RX_FILTER_BITS
ter bits
_CANSPI_RX_FILTER_1
_CANSPI_RX_FILTER_2
_CANSPI_RX_FILTER_3
_CANSPI_RX_FILTER_4
_CANSPI_RX_FILTER_5
_CANSPI_RX_FILTER_6
_CANSPI_RX_OVERFLOW
cleared
_CANSPI_RX_INVALID_MSG
cleared
_CANSPI_RX_XTD_FRAME
cleared
_CANSPI_RX_RTR_FRAME
cleare
_CANSPI_RX_DBL_BUFFERED
hardware double-buffered

as byte = $07
as
as
as
as
as
as

byte
byte
byte
byte
byte
byte

=
=
=
=
=
=

' Use this to access fil-

$00
$01
$02
$03
$04
$05

as byte = $08
as byte = $10

' Set if Overflowed else
' Set if invalid else

as byte = $20

' Set if XTD message else

as byte = $40

' Set if RTR message else

as byte = $80

' Set if this message was

You may use bitwise and to adjust the appropriate flags. For example:
if (MsgFlag and _CANSPI_RX_OVERFLOW) <> 0 then
...
' Receiver overflow has occurred.
' We have lost our previous message.
end if

CANSPI_MASK
The CANSPI_MASK constants define mask codes. Function CANSPISetMask
expects one of these as it's argument:
const
_CANSPI_MASK_B1 as byte = 0
_CANSPI_MASK_B2 as byte = 1

CANSPI_FILTER
The CANSPI_FILTER constants define filter codes. Functions CANSPISetFilter
expects one of these as it's argument:
const
_CANSPI_FILTER_B1_F1
_CANSPI_FILTER_B1_F2
_CANSPI_FILTER_B2_F1
_CANSPI_FILTER_B2_F2
_CANSPI_FILTER_B2_F3
_CANSPI_FILTER_B2_F4

as
as
as
as
as
as

byte
byte
byte
byte
byte
byte

=
=
=
=
=
=

0
1
2
3
4
5

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Library Example

This is a simple demonstration of CANSPI Library routines usage. First node initiates the communication with the second node by sending some data to its address.
The second node responds by sending back the data incremented by 1. First node
then does the same and sends incremented data back to second node, etc.
Code for the first CANSPI node:
program Can_Spi_1st
dim Can_Init_Flags, Can_Send_Flags,
flags
Rx_Data_Len as byte
RxTx_Data
as byte[8]
Msg_Rcvd as byte
Tx_ID, Rx_ID as longint

Can_Rcv_Flags as byte

' can

' received data length in bytes
' can rx/tx data buffer
' reception flag
' can rx and tx ID

' CANSPI module connections
dim CanSpi_CS as sbit at RC0_bit
CanSpi_CS_Direction as sbit at TRISC0_bit
CanSpi_Rst as sbit at RC2_bit
CanSpi_Rst_Direction as sbit at TRISC2_bit
' End CANSPI module connections
main:
ANSEL = 0
ANSELH = 0
PORTB = 0
TRISB = 0
Can_Init_Flags = 0
Can_Send_Flags = 0
Can_Rcv_Flags = 0

' Configure AN pins as digital I/O

'
' clear flags
'

Can_Send_Flags = _CANSPI_TX_PRIORITY_0 and ' form value to be used
_CANSPI_TX_XTD_FRAME and '
with CANSPIWrite
_CANSPI_TX_NO_RTR_FRAME
Can_Init_Flags = _CANSPI_CONFIG_SAMPLE_THRICE and ' form value to
be used
_CANSPI_CONFIG_PHSEG2_PRG_ON and
' with CANSPIInit
_CANSPI_CONFIG_XTD_MSG and
_CANSPI_CONFIG_DBL_BUFFER_ON and
_CANSPI_CONFIG_VALID_XTD_MSG

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SPI1_Init()
' initialize SPI1 module
CANSPIInitialize(1,3,3,3,1,Can_Init_Flags) 'Initialize external CANSPI module
CANSPISetOperationMode(_CANSPI_MODE_CONFIG,0xFF) 'set CONFIGURATION
mode
CANSPISetMask(_CANSPI_MASK_B1,-1,_CANSPI_CONFIG_XTD_MSG)
'set all
mask1 bits to ones
CANSPISetMask(_CANSPI_MASK_B2,-1,_CANSPI_CONFIG_XTD_MSG)
'set all
mask2 bits to ones
CANSPISetFilter(_CANSPI_FILTER_B2_F4,3,_CANSPI_CONFIG_XTD_MSG) 'set
id of filter B1_F1 to 3
CANSPISetOperationMode(_CANSPI_MODE_NORMAL,0xFF)
RxTx_Data[0] = 9

'set NORMAL mode

' set initial data to be sent

Tx_ID = 12111
set transmit ID

'

CANSPIWrite(Tx_ID, RxTx_Data, 1, Can_Send_Flags)
' send initial
message
while TRUE
' endless loop
Msg_Rcvd = CANSPIRead(Rx_ID , RxTx_Data , Rx_Data_Len,
Can_Rcv_Flags)
' receive message
if ((Rx_ID = 3) and Msg_Rcvd) then ' if message received
check id
PORTB = RxTx_Data[0]
' id correct, output data at PORTC
Inc(RxTx_Data[0])
' increment received data
Delay_ms(10)
CANSPIWrite(Tx_ID, RxTx_Data, 1, Can_Send_Flags)
' send
incremented data back
end if
wend
end.

Code for the second CANSPI node:
program Can_Spi_2nd
dim Can_Init_Flags, Can_Send_Flags, Can_Rcv_Flags as byte
' can
flags
Rx_Data_Len as byte
' received data length in bytes
RxTx_Data
as byte[8]
' CAN rx/tx data buffer
Msg_Rcvd as byte
' reception flag
Tx_ID, Rx_ID as longint
' can rx and tx ID
' CANSPI module connections
dim CanSpi_CS as sbit at RC0_bit
CanSpi_CS_Direction as sbit at TRISC0_bit

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CanSpi_Rst as sbit at PORTC.B2
CanSpi_Rst_Direction as sbit at TRISC2_bit
' End CANSPI module connections
main:
ANSEL = 0
ANSELH = 0
PORTB = 0
TRISB = 0
Can_Init_Flags = 0
Can_Send_Flags = 0
Can_Rcv_Flags = 0

' Configure AN pins as digital I/O
' clear PORTB
' set PORTB as output
'
' clear flags
'

Can_Send_Flags = _CANSPI_TX_PRIORITY_0 and ' form value to be used
_CANSPI_TX_XTD_FRAME and ' with CANSPIWrite
_CANSPI_TX_NO_RTR_FRAME
Can_Init_Flags = _CANSPI_CONFIG_SAMPLE_THRICE and ' Form value to
be used
_CANSPI_CONFIG_PHSEG2_PRG_ON and ' with
CANSPIInit
_CANSPI_CONFIG_XTD_MSG and
_CANSPI_CONFIG_DBL_BUFFER_ON and
_CANSPI_CONFIG_VALID_XTD_MSG and
_CANSPI_CONFIG_LINE_FILTER_OFF
SPI1_Init()
'
initialize SPI1 module
CANSPIInitialize(1,3,3,3,1,Can_Init_Flags)
' initialize external CANSPI module
CANSPISetOperationMode(_CANSPI_MODE_CONFIG,0xFF)
' set CONFIGURATION mode
CANSPISetMask(_CANSPI_MASK_B1,-1,_CANSPI_CONFIG_XTD_MSG)
' set all mask1 bits to ones
CANSPISetMask(_CANSPI_MASK_B2,-1,_CANSPI_CONFIG_XTD_MSG)
' set all mask2 bits to ones
CANSPISetFilter(_CANSPI_FILTER_B2_F3,12111,_CANSPI_CONFIG_XTD_MSG)
' set id of filter B1_F1 to 3
CANSPISetOperationMode(_CANSPI_MODE_NORMAL,0xFF)
' set NORMAL mode
Tx_ID = 3 ' set tx ID
while TRUE
' endless loop
Msg_Rcvd = CANSPIRead(Rx_ID, RxTx_Data, Rx_Data_Len, Can_Rcv_Flags)
'receive message
if ((Rx_ID = 12111) and Msg_Rcvd) then
PORTB =
RxTx_Data[0]
' id correct, output data at PORTC
Inc(RxTx_Data[0])
' increment received data

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CANSPIWrite(Tx_ID, RxTx_Data,1, Can_Send_Flags
data back
end if
wend
end.

Libraries
' send incremented

HW Connection

Example of interfacing CAN transceiver MCP2510 with MCU via SPI interface

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COMPACT FLASH LIBRARY

The Compact Flash Library provides routines for accessing data on Compact Flash
card (abbr. CF further in text). CF cards are widely used memory elements, commonly used with digital cameras. Great capacity and excellent access time of only
a few microseconds make them very attractive for the microcontroller applications.
In CF card, data is divided into sectors. One sector usually comprises 512 bytes.
Routines for file handling, the Cf_Fat routines, are not performed directly but successively through 512B buffer.
Note: Routines for file handling can be used only with FAT16 file system.
Note: Library functions create and read files from the root directory only.
Note: Library functions populate both FAT1 and FAT2 tables when writing to files,
but the file data is being read from the FAT1 table only; i.e. there is no recovery if
the FAT1 table gets corrupted.
Note: If MMC/SD card has Master Boot Record (MBR), the library will work with the
first available primary (logical) partition that has non-zero size. If MMC/SD card has
Volume Boot Record (i.e. there is only one logical partition and no MBRs), the library
works with entire card as a single partition. For more information on MBR, physical
and logical drives, primary/secondary partitions and partition tables, please consult
other resources, e.g. Wikipedia and similar.
Note: Before writing operation, make sure not to overwrite boot or FAT sector as it
could make your card on PC or digital camera unreadable. Drive mapping tools,
such as Winhex, can be of great assistance.

External dependencies of Compact Flash Library
The following variables
must be defined in all
projects using Compact
Flash Library:

236

Description :
Example :

dim CF_Data_Port as
byte sfr external

Compact Flash
Data Port.

dim CF_RDY as sbit sfr
external

Ready signal line.

dim CF_WE as sbit sfr
external

Write Enable signal dim CF_WE as sbit at
line.
RB6_bit

dim CF_Data_Port as byte
at PORTD
dim CF_RDY as sbit at
RB7_bit

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dim CF_OE as sbit sfr
external

Output Enable
line.

signal dim CF_OE as sbit at

dim CF_CD1 as sbit r
external

Chip Detect signal line. dim CF_CD1 as sbit at

dim CF_CE1 as sbit sfr
external

Chip Enable signal
line.

dim CF_CE1 as sbit at
RB3_bit

dim CF_A2 as sbit sfr
external

Address pin 2.

dim CF_A2 as sbit at
RB2_bit

dim CF_A1 as sbit sfr
external

Address pin 1.

dim CF_A1 as sbit at
RB1_bit

dim CF_A0 as sbit sfr
external

Address pin 0.

dim CF_A0 as sbit at
RB0_bit

RB5_bit

RB4_bit

dim CF_RDY_direction as Direction of the Ready
sbit sfr external
pin.

dim CF_RDY_direction as
sbit at TRISB7_bit

dim CF_WE_direction as
sbit sfr external

Direction of the Write
Enable pin.

dim CF_WE_direction as
sbit at TRISB6_bit

dim CF_OE_direction as
sbit sfr external

Direction of the Output dim CF_OE_direction as
sbit at TRISB5_bit
Enable pin

dim CF_CD1_direction as Direction of the Chip
sbit sfr external
Detect pin.

dim CF_CD1_direction as
sbit at TRISB4_bit

dim CF_CE1_direction as Direction of the Chip
sbit sfr external
Enable pin.

dim CF_CE1_direction as
sbit at TRISB3_bit

dim CF_A2_direction as
sbit sfr external

Direction of the Address dim CF_A2_direction as
sbit at TRISB2_bit
2 pin.

dim CF_A1_direction as
sbit sfr external

Direction of the Address dim CF_A1_direction as
sbit at TRISB1_bit
1 pin.

dim CF_A0_direction as
sbit sfr external

Direction of the Address dim CF_A0_direction as
sbit at TRISB0_bit
0 pin.

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Libraries
Library Routines
 Cf_Init
 Cf_Detect
 Cf_Enable
 Cf_Disable
 Cf_Read_Init
 Cf_Read_Byte
 Cf_Write_Init
 Cf_Write_Byte
 Cf_Read_Sector
 Cf_Write_Sector
Routines for file handling:














238

Cf_Fat_Init
Cf_Fat_QuickFormat
Cf_Fat_Assign
Cf_Fat_Reset
Cf_Fat_Read
Cf_Fat_Rewrite
Cf_Fat_Append
Cf_Fat_Delete
Cf_Fat_Write
Cf_Fat_Set_File_Date
Cf_Fat_Get_File_Date
Cf_Fat_Get_File_Size
Cf_Fat_Get_Swap_File

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Cf_Init
Prototype

sub procedure Cf_Init()

Returns

Nothing.

Description Initializes ports appropriately for communication with CF card.
Global variables :

Requires




















CF_Data_Port : Compact Flash data port
CF_RDY : Ready signal line
CF_WE : Write enable signal line
CF_OE : Output enable signal line
CF_CD1 : Chip detect signal line
CF_CE1 : Enable signal line
CF_A2 : Address pin 2
CF_A1 : Address pin 1
CF_A0 : Address pin 0
CF_Data_Port_direction : Direction of the Compact Flash data direction port
CF_RDY_direction : Direction of the Ready pin
CF_WE_direction : Direction of the Write enable pin
CF_OE_direction : Direction of the Output enable pin
CF_CD1_direction : Direction of the Chip detect pin
CF_CE1_direction : Direction of the Chip enable pin
CF_A2_direction : Direction of the Address 2 pin
CF_A1_direction : Direction of the Address 1 pin
CF_A0_direction : Direction of the Address 0 pin

must be defined before using this function.
set compact flash pinout
dim CF_Data_Port as byte at PORTD

Example

dim CF_RDY as sbit at RB7_bit
dim CF_WE as sbit at RB6_bit
dim CF_OE as sbit at RB5_bit
dim CF_CD1 as sbit at RB4_bit
dim CF_CE1 as sbit at RB3_bit
dim CF_A2 as sbit at RB2_bit
dim CF_A1 as sbit at RB1_bit
dim CF_A0 as sbit at RB0_bit
dim CF_RDY_direction as sbit at
dim CF_WE_direction as sbit at
dim CF_OE_direction as sbit at
dim CF_CD1_direction as sbit at
dim CF_CE1_direction as sbit at
dim CF_A2_direction as sbit at
dim CF_A1_direction as sbit at
dim CF_A0_direction as sbit at
' end of cf pinout

TRISB7_bit
TRISB6_bit
TRISB5_bit
TRISB4_bit
TRISB3_bit
TRISB2_bit
TRISB1_bit
TRISB0_bit

'Init CF
Cf_Init()

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Cf_Detect
Prototype
Returns

sub function CF_Detect() as byte



1 - if CF card was detected
0 - otherwise

Description Checks for presence of CF card by reading the chip detect pin.
Requires

The corresponding MCU ports must be appropriately initialized for CF card. See Cf_Init.

Example

' Wait until CF card is inserted:
while (Cf_Detect() = 0)
nop
wend

Cf_Enable
Prototype

sub procedure Cf_Enable()

Returns

Nothing.

Enables the device. Routine needs to be called only if you have disabled the
Description device by means of the Cf_Disable routine. These two routines in conjunction
allow you to free/occupy data line when working with multiple devices.
Requires

The corresponding MCU ports must be appropriately initialized for CF card. See
Cf_Init.

Example

' enable compact flash
Cf_Enable()

Cf_Disable
Prototype

sub procedure Cf_Disable()

Returns

Nothing.

Routine disables the device and frees the data lines for other devices. To
Description enable the device again, call Cf_Enable. These two routines in conjunction
allow you to free/occupy data line when working with multiple devices.

240

Requires

The corresponding MCU ports must be appropriately initialized for CF card. See Cf_Init.

Example

' disable compact flash
Cf_Disable()

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Cf_Read_Init
Prototype

sub procedure Cf_Read_Init(dim address as longword, dim
sector_count as byte)

Returns

Nothing.
Initializes CF card for reading.

Description

Parameters :



address: the first sector to be prepared for reading opera tion.
sector_count: number of sectors to be prepared for read ing operation.

Requires

The corresponding MCU ports must be appropriately initialized for CF card. See Cf_Init.

Example

' initialize compact flash for reading from sector 590
Cf_Read_Init(590, 1)

Cf_Read_Byte
Prototype

sub function CF_Read_Byte() as byte

Returns a byte read from Compact Flash sector buffer.
Returns
Note: Higher byte of the unsigned return value is cleared.
Description

Reads one byte from Compact Flash sector buffer location currently pointed to
by internal read pointers. These pointers will be autoicremented upon reading.
The corresponding MCU ports must be appropriately initialized for CF card. See Cf_Init.

Requires
CF card must be initialized for reading operation. See Cf_Read_Init.

Example

' Read a byte from compact flash:
dim data as byte
...
data = Cf_Read_Byte()

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Cf_Write_Init
Prototype

sub procedure Cf_Write_Init(dim address as longword, dim
sectcnt as byte)

Returns

Nothing.
Initializes CF card for writing.

Description

Parameters :



address: the first sector to be prepared for writing operation
sectcnt: number of sectors to be prepared for writing operation.

Requires

The corresponding MCU ports must be appropriately initialized for CF card. See Cf_Init.

Example

' initialize compact flash for writing to sector 590
Cf_Write_Init(590, 1)

Cf_Write_Byte
Prototype

sub procedure Cf_Write_Byte(dim data_ as byte)

Returns

Nothing.

Description

Writes a byte to Compact Flash sector buffer location currently pointed to by
writing pointers. These pointers will be autoicremented upon reading. When
sector buffer is full, its content will be transfered to appropriate flash memory
sector.
Parameters :


242

data_: byte to be written.

Requires

The corresponding MCU ports must be appropriately initialized for CF card. CF card
must be initialized for writing operation. See Cf_Write_Init.

Example

dim data_ as byte
...
data = 0xAA
Cf_Write_Byte(data)

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Cf_Read_Sector
Prototype

sub procedure Cf_Read_Sector(dim sector_number as longword, dim
byref buffer as byte[512])

Returns

Nothing.
Reads one sector (512 bytes). Read data is stored into buffer provided by the
buffer parameter.

Description

Parameters :



sector_number: sector to be read.
buffer: data buffer of at least 512 bytes in length.

Requires

The corresponding MCU ports must be appropriately initialized for CF card. See Cf_Init.

Example

' read sector 22
dim data as array[512] of byte
...
Cf_Read_Sector(22, data)

Cf_Write_Sector
Prototype

sub procedure Cf_Write_Sector(dim sector_number as longword, dim
byref buffer as byte[512])

Returns

Nothing.
Writes 512 bytes of data provided by the buffer parameter to one CF sector.
Parameters :

Description



sector_number: sector to be written to.
buffer: data buffer of 512 bytes in length

Requires

The corresponding MCU ports must be appropriately initialized for CF card. See Cf_Init.

Example

' write to sector 22
dim data as array[512] of byte
...
Cf_Write_Sector(22, data)

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Cf_Fat_Init
Prototype
Returns

sub function Cf_Fat_Init() as byte




0 - if CF card was detected and successfully initialized
1 - if FAT16 boot sector was not found
255 - if card was not detected

Description

Initializes CF card, reads CF FAT16 boot sector and extracts data needed by
the library.

Requires

Nothing.

Example

init the FAT library
if (Cf_Fat_Init() = 0) then
...
end if

Cf_Fat_QuickFormat
Prototype

Returns

sub function Cf_Fat_QuickFormat(dim byref cf_fat_label as
string[11]) as byte




0 - if CF card was detected and formated and initialized
1 - if FAT16 format was unseccessful
255 - if card was not detected

Formats to FAT16 and initializes CF card.
Parameters :
 cf_fat_label: volume label (11 characters in length). If less than 11
characters are provided, the label will be padded with spaces. If an empty string
is passed, the volume will not be labeled.
Description
Note: This routine can be used instead or in conjunction with the Cf_Fat_Init
routine.

Note: If CF card already contains a valid boot sector, it will remain unchanged
(except volume label field) and only FAT and ROOT tables will be erased. Also,
the new volume label will be set.

244

Requires

Nothing.

Example

'--- format and initialize the FAT library
if ( Cf_Fat_QuickFormat('mikroE') = 0) then
...
end if

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Cf_Fat_Assign
Prototype
Returns

sub function Cf_Fat_Assign(dim byref filename as char[12], dim
file_cre_attr as byte) as byte



0 if file does not exist and no new file is created.
1 if file already exists or file does not exist but a new file is created.

Assigns file for file operations (read, write, delete...). All subsequent file operations will be applied to the assigned file.
Parameters :
 filename: name of the file that should be assigned for file operations.
The file name should be in DOS 8.3 (file_name.extension) format. The file name
and extension will be automatically padded with spaces by the library if they
have less than length required (i.e. "mikro.tx" -> "mikro .tx "), so the user does
not have to take care of that. The file name and extension are case insensitive.
The library will convert them to the proper case automatically, so the user does
not have to take care of that.
Also, in order to keep backward compatibility with the first version of this library,
file names can be entered as UPPERCASE string of 11 bytes in length with no
dot character between the file name and extension (i.e. "MIKROELETXT" ->
MIKROELE.TXT). In this case the last 3 characters of the string are considered
to be file extension.
 file_cre_attr: file creation and attributs flags. Each bit corresponds to
Description the appropriate file attribut:
Bit

Mask

Description

0

0x01

Read Only

1

0x02

Hidden

2

0x04

System

3

0x08

Volume Label

4

0x10

Subdirectory

5

0x20

Archive

6

0x40

Device (internal use only, never found on disk)

7

0x80

File creation flag. If the file does not exist and this flag is set, a
new file with specified name will be created.

Note: Long File Names (LFN) are not supported.
Requires

CF card and CF library must be initialized for file operations. See Cf_Fat_Init

Example

' create file with archive attribut if it does not already exist
Cf_Fat_Assign('MIKRO007.TXT',0xA0)

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Cf_Fat_Reset
Prototype

sub procedure Cf_Fat_Reset(dim byref size as longword)

Returns

Nothing.

Opens currently assigned file for reading.
Parameters :
Description
 size: buffer to store file size to. After file has been open for reading its size
is returned through this parameter.
Requires

CF card and CF library must be initialized for file operations. See Cf_Fat_Init.
File must be previously assigned. See Cf_Fat_Assign

Example

dim size as longword
...
Cf_Fat_Reset(size)

Cf_Fat_Read
Prototype

sub procedure Cf_Fat_Read(dim byref bdata as byte)

Returns

Nothing.

Reads a byte from currently assigned file opened for reading. Upon function
execution file pointers will be set to the next character in the file.
Description Parameters :
 bdata: buffer to store read byte to. Upon this function execution read byte
is returned through this parameter

246

Requires

CF card and CF library must be initialized for file operations. See Cf_Fat_Init.
File must be previously assigned. See Cf_Fat_Assign.
File must be open for reading. See Cf_Fat_Reset.

Example

dim character as byte
...
Cf_Fat_Read(character)

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Cf_Fat_Rewrite
Prototype

sub procedure Cf_Fat_Read()

Returns

Nothing.

Description

Opens currently assigned file for writing. If the file is not empty its content will
be erased.
CF card and CF library must be initialized for file operations. See Cf_Fat_Init.

Requires
The file must be previously assigned. See Cf_Fat_Assign.
Example

' open file for writing
Cf_Fat_Rewrite()

Cf_Fat_Append
Prototype

sub procedure Cf_Fat_Append()

Returns

Nothing.

Opens currently assigned file for appending. Upon this function execution file
Description pointers will be positioned after the last byte in the file, so any subsequent file
writing operation will start from there.
CF card and CF library must be initialized for file operations. See Cf_Fat_Init.
Requires
File must be previously assigned. See Cf_Fat_Assign.
Example

'open file for appending
Cf_Fat_Append()

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Cf_Fat_Delete
Prototype

sub procedure Cf_Fat_Delete()

Returns

Nothing.

Description Deletes currently assigned file from CF card.
CF card and CF library must be initialized for file operations. See Cf_Fat_Init.
Requires
File must be previously assigned. See Cf_Fat_Assign.
Example

'delete current file
Cf_Fat_Delete()

Cf_Fat_Write
Prototype

sub procedure Cf_Fat_Write(dim byref fdata as byte[512],
dim data_len as word)

Returns

Nothing.
Writes requested number of bytes to currently assigned file opened for writing.
Parameters :

Description



fdata: data to be written.
data_len: number of bytes to be written.

CF card and CF library must be initialized for file operations. See Cf_Fat_Init.
Requires

Example

248

File must be previously assigned. See Cf_Fat_Assign.
File must be open for writing. See Cf_Fat_Rewrite or Cf_Fat_Append
dim file_contents as array[42] of byte
...
Cf_Fat_Write(file_contents, 42) ' write data to the assigned file

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Cf_Fat_Set_File_Date
Prototype

sub procedure Cf_Fat_Set_File_Date(dim year as word, dim
month as byte, dim day as byte, dim hours as byte, dim
mins as byte, dim seconds as byte)

Returns

Nothing.
Sets the date/time stamp. Any subsequent file writing operation will write this
stamp to currently assigned file's time/date attributs.
Parameters :

Description








year: year attribute. Valid values: 1980-2107
month: month attribute. Valid values: 1-12
day: day attribute. Valid values: 1-31
hours: hours attribute. Valid values: 0-23
mins: minutes attribute. Valid values: 0-59
seconds: seconds attribute. Valid values: 0-59

CF card and CF library must be initialized for file operations. See Cf_Fat_Init.
Requires

File must be previously assigned. See Cf_Fat_Assign.
File must be open for writing. See Cf_Fat_Rewrite or Cf_Fat_Append.

Example

Cf_Fat_Set_File_Date(2005,9,30,17,41,0)

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Cf_Fat_Get_File_Date
Prototype

sub procedure Cf_Fat_Get_File_Date(dim byref year as word,
dim byref month as byte, dim byref day as byte, dim byref
hours as byte, dim byref mins as byte)

Returns

Nothing.
Reads time/date attributes of currently assigned file.

Parameters :
 year:buffer to store year attribute to. Upon function execution year
attribute is returned through this parameter.
 month: buffer to store month attribute to. Upon function execution month
Description
attribute is returned through this parameter.
 day: buffer to store day attribute to. Upon function execution day attribute
is returned through this parameter.
 hours: buffer to store hours attribute to. Upon function execution hours
attribute is returned through this parameter.
 mins: buffer to store minutes attribute to. Upon function execution
minutes attribute is returned through this parameter.
CF card and CF library must be initialized for file operations. See Cf_Fat_Init.
Requires
File must be previously assigned. See Cf_Fat_Assign.
Example

dim year as word
month, day, hours, mins as byte
...
Cf_Fat_Get_File_Date(year, month, day, hours, mins)

Cf_Fat_Get_File_Size
Prototype

sub function Cf_Fat_Get_File_Size() as longword

Returns

Size of the currently assigned file in bytes.

Description This function reads size of currently assigned file in bytes.
CF card and CF library must be initialized for file operations. See Cf_Fat_Init.
Requires
File must be previously assigned. See Cf_Fat_Assign.
Example

250

dim my_file_size as longword
...
my_file_size = Cf_Fat_Get_File_Size()

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Cf_Fat_Get_Swap_File
Prototype

sub function Cf_Fat_Get_Swap_File(dim sectors_cnt as
longint, dim byref filename as string[11], dim file_attr
as byte) as longword


Returns

Number of the start sector for the newly created swap file, if there was
enough free space on CF card to create file of required size.
 0 - otherwise.
This function is used to create a swap file of predefined name and size on the
CF media. If a file with specified name already exists on the media, search for
consecutive sectors will ignore sectors occupied by this file. Therefore, it is recommended to erase such file if it exists before calling this function. If it is not
erased and there is still enough space for a new swap file, this function will
delete it after allocating new memory space for a new swap file.
The purpose of the swap file is to make reading and writing to CF media as fast
as possible, by using the Cf_Read_Sector() and Cf_Write_Sector() functions
directly, without potentially damaging the FAT system.
The swap file can be considered as a "window" on the media where the user
can freely write/read data. Its main purpose in the mikroBasic's library is to be
used for fast data acquisition; when the time-critical acquisition has finished, the
data can be re-written into a "normal" file, and formatted in the most suitable
way.
Parameters:

Description  sectors_cnt: number of consecutive sectors that user wants the swap file
to have.
 filename: name of the file that should be assigned for file operations. The
file name should be in DOS 8.3 (file_name.extension) format. The file name and
extension will be automatically padded with spaces by the library if they have
less than length required (i.e. "mikro.tx" -> "mikro .tx "), so the user does not
have to take care of that. The file name and extension are case insensitive. The
library will convert them to the proper case automatically, so the user does not
have to take care of that.
Also, in order to keep backward compatibility with the first version of this library,
file names can be entered as UPPERCASE string of 11 bytes in length with no
dot character between the file name and extension (i.e. "MIKROELETXT" ->
MIKROELE.TXT). In this case the last 3 characters of the string are considered
to be file extension.
 file_attr: file creation and attributs flags. Each bit corresponds to the
appropriate file attribut:

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Description

Bit

Mask Description

0

0x01 Read Only

1

0x02 Hidden

2

0x04 System

3

0x08 Volume Label

4

0x10 Subdirectory

5

0x20 Archive

6

0x40 Device (internal use only, never found on disk)

7

0x80 Not used

Note: Long File Names (LFN) are not supported.

252

Requires

CF card and CF library must be initialized for file operations. See Cf_Fat_Init.

Example

program
'-------------- Try to create a swap file with archive atribute,
whose size will be at least 1000 sectors.
'
If it succeeds, it sends the No. of start sector over USART
dim size as longword
...
main:
...
size = Cf_Fat_Get_Swap_File(1000, "mikroE.txt", 0x20)
if size then
UART1_Write(0xAA)
UART1_Write(Lo(size))
UART1_Write(Hi(size))
UART1_Write(Higher(size))
UART1_Write(Highest(size))
UART1_Write(0xAA)
end if
end.

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Library Example
The following example demonstrates various aspects of the Cf_Fat16 library:
Creation of new file and writing down to it; Opening existing file and re-writing it (writing from start-of-file); Opening existing file and appending data to it (writing from
end-of-file); Opening a file and reading data from it (sending it to USART terminal);
Creating and modifying several files at once;

program CF_Fat16_Test
' set compact flash pinout
dim
Cf_Data_Port as byte at PORTD
CF_RDY
CF_WE
CF_OE
CF_CD1
CF_CE1
CF_A2
CF_A1
CF_A0

as
as
as
as
as
as
as
as

sbit
sbit
sbit
sbit
sbit
sbit
sbit
sbit

at
at
at
at
at
at
at
at

RB7_bit
RB6_bit
RB5_bit
RB4_bit
RB3_bit
RB2_bit
RB1_bit
RB0_bit

CF_RDY_direction as
CF_WE_direction as
CF_OE_direction as
CF_CD1_direction as
CF_CE1_direction as
CF_A2_direction as
CF_A1_direction as
CF_A0_direction as
' end of cf pinout

sbit
sbit
sbit
sbit
sbit
sbit
sbit
sbit

at
at
at
at
at
at
at
at

TRISB7_bit
TRISB6_bit
TRISB5_bit
TRISB4_bit
TRISB3_bit
TRISB2_bit
TRISB1_bit
TRISB0_bit

FAT_TXT as string[20]
file_contents as string[50]
filename as string[14]

' File names

character as byte
loop_, loop2 as byte
size as longint
Buffer as byte[512]
'-------------- Writes string to USART
sub procedure Write_Str(dim byref ostr as byte[2] )

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dim
i as byte
i = 0
while ostr[i] <> 0
UART1_Write(ostr[i])
Inc(i)
wend
UART1_Write($0A)
end sub

'-------------- Creates new file and writes some data to it
sub procedure Create_New_File
filename[7] = "A"
Cf_Fat_Assign(filename, 0xA0)
create file
Cf_Fat_Rewrite()
new data
for loop_=1 to 90
card

' Will not find file and then
' To clear file and start with
' We want 5 files on the MMC

PORTC = loop_
file_contents[0] = loop_ div 10 + 48
file_contents[1] = loop_ mod 10 + 48
Cf_Fat_Write(file_contents, 38) ' write data to the assigned file
UART1_Write(".")
next loop_
end sub
'-------------- Creates many new files and writes data to them
sub procedure Create_Multiple_Files
for loop2 = "B" to "Z"
UART1_Write(loop2) ' this line can slow down the performance
filename[7] = loop2
' set filename
Cf_Fat_Assign(filename, 0xA0)
' find existing file or create a new one
Cf_Fat_Rewrite
' To clear file and start
with new data
for loop_ = 1 to 44
file_contents[0] = loop_ div 10 + 48
file_contents[1] = loop_ mod 10 + 48
Cf_Fat_Write(file_contents, 38) ' write data to the assigned
file
next loop_
next loop2
end sub
'-------------- Opens an existing file and rewrites it

254

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sub procedure Open_File_Rewrite
filename[7] = "C"
' Set filename for single-file
tests
Cf_Fat_Assign(filename, 0)
Cf_Fat_Rewrite
for loop_ = 1 to 55
file_contents[0] = byte(loop_ div 10 + 48)
file_contents[1] = byte(loop_ mod 10 + 48)
Cf_Fat_Write(file_contents, 38) ' write data to the assigned file
next loop_
end sub
'-------------- Opens an existing file and appends data to it
'
(and alters the date/time stamp)
sub procedure Open_File_Append
filename[7] = "B"
Cf_Fat_Assign(filename, 0)
Cf_Fat_Set_File_Date(2005,6,21,10,35,0)
Cf_Fat_Append
file_contents = " for mikroElektronika 2005"
' Prepare file
for append
file_contents[26] = 10
Cf_Fat_Write(file_contents, 27)
file
end sub

' LF
' Write data to assigned

'-------------- Opens an existing file, reads data from it and puts
it to USART
sub procedure Open_File_Read
filename[7] = "B"
Cf_Fat_Assign(filename, 0)
Cf_Fat_Reset(size)
' To read file, sub procedure
returns size of file
while size > 0
Cf_Fat_Read(character)
UART1_Write(character)
' Write data to USART
Dec(size)
wend
end sub
'-------------- Deletes a file. If file doesn"t exist, it will first
be created
'
and then deleted.
sub procedure Delete_File
filename[7] = "F"
Cf_Fat_Assign(filename, 0)
Cf_Fat_Delete
end sub

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'-------------- Tests whether file exists, and if so sends its creation date
'
and file size via USART
sub procedure Test_File_Exist(dim fname as byte)
dim
fsize as longint
year as word
month_, day, hour_, minute_ as byte
outstr as byte[12]
filename[7] = "B"
' uncomment this line to search for file
that DOES exists
' filename[7] = "F"
' uncomment this line to search for file
that DOES NOT exist
if Cf_Fat_Assign(filename, 0) <> 0 then
'--- file has been found - get its date
Cf_Fat_Get_File_Date(year,month_,day,hour_,minute_)
WordToStr(year, outstr)
Write_Str(outstr)
ByteToStr(month_, outstr)
Write_Str(outstr)
WordToStr(day, outstr)
Write_Str(outstr)
WordToStr(hour_, outstr)
Write_Str(outstr)
WordToStr(minute_, outstr)
Write_Str(outstr)
'--- get file size
fsize = Cf_Fat_Get_File_Size
LongIntToStr(fsize, outstr)
Write_Str(outstr)
else
'--- file was not found - signal it
UART1_Write(0x55)
Delay_ms(1000)
UART1_Write(0x55)
end if
end sub
'-------------- Tries to create a swap file, whose size will be at
least 100
'
sectors (see Help for details)
sub procedure M_Create_Swap_File
dim i as word
for i=0 to 511
Buffer[i] = i
next i
size = Cf_Fat_Get_Swap_File(5000, "mikroE.txt", 0x20)
help on this sub function for details

256

' see

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if (size <> 0) then
LongIntToStr(size, fat_txt)
Write_Str(fat_txt)
for i=0 to 4999
Cf_Write_Sector(size, Buffer)
size = size+1
UART1_Write(".")
next i
end if
end sub
'-------------- Main. Uncomment the sub function(s) to test the
desired operation(s)
main:
FAT_TXT = "FAT16 not found"
file_contents = "XX CF FAT16 library by Anton Rieckert"
file_contents[37] = 10
' newline
filename = "MIKRO00xTXT"
ADCON1 = ADCON1 or 0x0F
TRISC = 0
PORTC = 0

'

Configure pins as digital I/O

'

we will use PORTC to signal test end

UART1_Init(19200)
' Set up USART for file reading
delay_ms(100)
UART1_Write_Text(":Start:")
' --- Init the FAT library
' --- use Cf_Fat_QuickFormat instead of init routine if a format is needed
if Cf_Fat_Init() = 0 then
'--- test sub functions
'----- test group #1
Create_New_File()
Create_Multiple_Files()
'----- test group #2
Open_File_Rewrite()
Open_File_Append()
Delete_File
'----- test group #3
Open_File_Read()
Test_File_Exist("F")
M_Create_Swap_File()
'--- Test termination
UART1_Write(0xAA)
else
UART1_Write_Text(FAT_TXT)
end if
'--- signal end-of-test
UART1_Write_Text(":End:")
end.

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HW Connection

Pin diagram of CF memory card

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EEPROM LIBRARY
EEPROM data memory is available with a number of PIC MCUs. mikroBasic
PRO for PIC includes library for comfortable work with EEPROM.

Library Routines



EEPROM_Read
EEPROM_Write

EEPROM_Read
Prototype

sub function EEPROM_Read(dim Address as word) as byte

Returns

Returns byte from specified address.

Reads data from specified address. Parameter address is of byte type, which
means it can address only 256 locations. For PIC18 micros with more EEPROM
Description
data locations, it is programmer’s responsibility to set SFR EEADRH register
appropriately.
Requires EEPROM module.
Requires

Ensure minimum 20ms delay between successive use of routines
EEPROM_Write and EEPROM_Read. Although PIC will write the correct value,
EEPROM_Read might return an undefined result.

Example

tmp = EEPROM_Read($3F)

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EEPROM_Write
Prototype

sub procedure EEPROM_Write(dim Address as word, dim Data as byte)

Returns

Nothing.

Writes data to specified address. Parameter address is of byte type, which
means it can address only 256 locations. For PIC18 micros with more EEPROM
data locations, it is programmer’s responsibility to set SFR EEADRH register
Description appropriately.
Be aware that all interrupts will be disabled during execution of EEPROM_Write routine (GIE bit of INTCON register will be cleared). Routine will set this bit on exit.
Requires EEPROM module.
Requires

Ensure minimum 20ms delay between successive use of routines
EEPROM_Write and EEPROM_Read. Although PIC will write the correct value,
EEPROM_Read might return an undefined result.

Example

EEPROM_Write($32)

Library Example
The example writes values at 20 successive locations of EEPROM. Then, it reads
the written data and prints on PORTB for a visual check.
program Eeprom
dim counter as byte
main:
ANSEL =
ANSELH =
C1ON_bit
C2ON_bit

0
0
= 0
= 0

' loop variable

' Configure AN pins as digital I/O
' Disable comparators

PORTB = 0
PORTC = 0
PORTD = 0
TRISB = 0
TRISC = 0
TRISD = 0
for counter = 0 to 31
' Fill data buffer
EEPROM_Write(0x80+counter, counter) 'Write data to address 0x80+ii
next counter
EEPROM_Write(0x02,0xAA)
EEPROM_Write(0x50,0x55)

260

' Write some data at address 2
' Write some data at address 0150

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Delay_ms(1000)
PORTB = 0xFF
PORTC = 0xFF
Delay_ms(1000)
PORTB = 0x00
PORTC = 0x00
Delay_ms(1000)
PORTB = EEPROM_Read(0x02)
play
it on PORTB
PORTC = EEPROM_Read(0x50)
play it on PORTC

Libraries
' Blink PORTB and PORTC diodes
' to indicate reading start

' Read data from address 2 and dis

' Read data from address 0x50 and dis

Delay_ms(1000)
for counter = 0 to 31
' Read 32 bytes block from address
0x100
PORTD = EEPROM_Read(0x80+counter) ' and display data on PORTC
Delay_ms(100)
next counter
end.

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Ethernet PIC18FxxJ60 Library

PIC18FxxJ60 family of microcontrollers feature an embedded Ethernet controller
module. This is a complete connectivity solution, including full implementations of
both Media Access Control (MAC) and Physical Layer transceiver (PHY) modules.
Two pulse transformers and a few passive components are all that are required to
connect the microcontroller directly to an Ethernet network.

The Ethernet module meets all of the IEEE 802.3 specifications for 10-BaseT connectivity to a twisted-pair network. It incorporates a number of packet filtering
schemes to limit incoming packets. It also provides an internal DMA module for fast
data throughput and hardware assisted IP checksum calculations. Provisions are
also made for two LED outputs to indicate link and network activity
This library provides the posibility to easily utilize ethernet feature of the above mentioned MCUs.
Ethernet PIC18FxxJ60 library supports:











IPv4 protocol.
ARP requests.
ICMP echo requests.
UDP requests.
TCP requests (no stack, no packet reconstruction).
ARP client with cache.
DNS client.
UDP client.
DHCP client.
packet fragmentation is NOT supported.

Note: Global library variable Ethernet_userTimerSec is used to keep track of time
for all client implementations (ARP, DNS, UDP and DHCP). It is user responsibility
to increment this variable each second in it's code if any of the clients is used.
Note: For advanced users there are header files ("eth_j60LibDef.h" and
"eth_j60LibPrivate.h") in Uses\P18 folder of the compiler with description of all
routines and global variables, relevant to the user, implemented in the Ethernet
PIC18FxxJ60 Library.

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Library Routines

























Ethernet_Init
Ethernet_Enable
Ethernet_Disable
Ethernet_doPacket
Ethernet_putByte
Ethernet_putBytes
Ethernet_putString
Ethernet_putConstString
Ethernet_putConstBytes
Ethernet_getByte
Ethernet_getBytes
Ethernet_UserTCP
Ethernet_UserUDP
Ethernet_getIpAddress
Ethernet_getGwIpAddress
Ethernet_getDnsIpAddress
Ethernet_getIpMask
Ethernet_confNetwork
Ethernet_arpResolve
Ethernet_sendUDP
Ethernet_dnsResolve
Ethernet_initDHCP
Ethernet_doDHCPLeaseTime
Ethernet_renewDHCP

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Ethernet_Init
Prototype

sub procedure Ethernet_Init(dim byref mac as byte, dim byref ip
as byte, dim fullDuplex as byte)

Returns

Nothing.
This is MAC module routine. It initializes Ethernet controller. This function is
internaly splited into 2 parts to help linker when coming short of memory.
Ethernet controller settings (parameters not mentioned here are set to default):

Description

 receive buffer start address : 0x0000.
 receive buffer end address : 0x19AD.
 transmit buffer start address: 0x19AE.
 transmit buffer end address : 0x1FFF.
 RAM buffer read/write pointers in auto-increment mode.
 receive filters set to default: CRC + MAC Unicast + MAC Broad cast in OR mode.
 flow control with TX and RX pause frames in full duplex mode.
 frames are padded to 60 bytes + CRC.
 maximum packet size is set to 1518.
 Back-to-Back Inter-Packet Gap: 0x15 in full duplex mode;0x12 in half duplex mode.
 Non-Back-to-Back Inter-Packet Gap: 0x0012 in full duplex mode; 0x0C12 in



half duplex mode.
half duplex loopback disabled.
LED configuration: default (LEDA-link status, LEDB-link activity).

Parameters:
 mac: RAM buffer containing valid MAC address.
 ip: RAM buffer containing valid IP address.
 fullDuplex: ethernet duplex mode switch. Valid values: 0 (half duplex mode,
predefined library const Ethernet_HALFDUPLEX) and 1 (full duplex mode, predefined library const Ethernet_FULLDUPLEX).
Note: If a DHCP server is to be used, IP address should be set to 0.0.0.0.

Requires

Example

Nothing.
dim
myMacAddr as
myIpAddr as
...
myMacAddr[0]
myMacAddr[1]
myMacAddr[2]
myMacAddr[3]
myMacAddr[4]
myMacAddr[5]

=
=
=
=
=
=

0x00
0x14
0xA5
0x76
0x19
0x3F

myIpAddr[0]
myIpAddr[1]
myIpAddr[2]
myIpAddr[3]

=
=
=
=

192
168
20
60

byte[6] ' my MAC address
byte[4] ' my IP addr

Ethernet_Init(myMacAddr, myIpAddr, Ethernet_FULLDUPLEX)

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Ethernet_Enable
Prototype

sub procedure Ethernet_Enable(dim enFlt as byte)

Returns

Nothing.
This is MAC module routine. This routine enables appropriate network traffic on
the MCU's internal Ethernet module by the means of it's receive filters (unicast,
multicast, broadcast, crc). Specific type of network traffic will be enabled if a
corresponding bit of this routine's input parameter is set. Therefore, more than
one type of network traffic can be enabled at the same time. For this purpose,
predefined library constants (see the table below) can be ORed to form appropriate input value.
Parameters:


enFlt: network traffic/receive filter flags. Each bit corresponds to the

appropriate network traffic/receive filter:

Description

Predefined library const

Bit

Mask Description

0

0x01

MAC Broadcast traffic/receive filter flag. When
_Ethernet_BROADCAST
set, MAC broadcast traffic will be enabled.

1

0x02

MAC Multicast traffic/receive filter flag. When
set, MAC multicast traffic will be enabled.

_Ethernet_MULTICAST

2

0x04

not used

none

3

0x08

not used

none

4

0x10

not used

none

5

0x20

CRC check flag. When set, packets with
invalid CRC field will be discarded.

_Ethernet_CRC

6

0x40

not used

none

7

0x80

MAC Unicast traffic/receive filter flag. When
_Ethernet_UNICAST
set, MAC unicast traffic will be enabled.

Note: Advance filtering available in the MCU's internal Ethernet module such as
Pattern Match, Magic Packet and Hash Table can not be enabled by this
routine. Additionaly, all filters, except CRC, enabled with this routine will work in
OR mode, which means that packet will be received if any of the enabled filters
accepts it.
Note: This routine will change receive filter configuration on-the-fly. It will not, in
any way, mess with enabling/disabling receive/transmit logic or any other part of
the MCU's internal Ethernet module. The MCU's internal Ethernet module
should be properly cofigured by the means of Ethernet_Init routine.
Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

Ethernet_Enable(_Ethernet_CRC or _Ethernet_UNICAST) ' enable CRC
checking and Unicast traffic

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Ethernet_Disable
Prototype

sub procedure Ethernet_Disable(dim disFlt as byte)

Returns

Nothing.
This is MAC module routine. This routine disables appropriate network traffic on
the MCU's internal Ethernet module by the means of it's receive filters (unicast,
multicast, broadcast, crc). Specific type of network traffic will be disabled if a
corresponding bit of this routine's input parameter is set. Therefore, more than
one type of network traffic can be disabled at the same time. For this purpose,
predefined library constants (see the table below) can be ORed to form appropriate input value.
Parameters:
 disFlt: network traffic/receive filter flags. Each bit corresponds to the
appropriate network traffic/receive filter:

Description

Predefined library const

Bit

Mask Description

0

0x01

MAC Broadcast traffic/receive filter flag. When
_Ethernet_BROADCAST
set, MAC broadcast traffic will be disabled.

1

0x02

MAC Multicast traffic/receive filter flag. When
set, MAC multicast traffic will be disabled.

_Ethernet_MULTICAST

2

0x04

not used

none

3

0x08

not used

none

4

0x10

not used

none

5

0x20

CRC check flag. When set, CRC check will
be disabled and packets with invalid CRC _Ethernet_CRC
field will be accepted.

6

0x40

not used

7

0x80

MAC Unicast traffic/receive filter flag. When
_Ethernet_UNICAST
set, MAC unicast traffic will be disabled.

none

Note: Advance filtering available in the MCU's internal Ethernet module such as
Pattern Match, Magic Packet and Hash Table can not be disabled by this
routine.
Note: This routine will change receive filter configuration on-the-fly. It will not, in
any way, mess with enabling/disabling receive/transmit logic or any other part of
the MCU's internal Ethernet module. The MCU's internal Ethernet module
should be properly cofigured by the means of Ethernet_Init routine.

266

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

Ethernet_Enable(_Ethernet_CRC or _Ethernet_UNICAST) ' enable CRC
checking and Unicast traffic

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Ethernet_doPacket
Prototype

sub procedure EEPROM_Write(dim Address as word, dim Data as byte)



Returns




0 - upon successful packet processing (zero packets received or received
packet processed successfully).
1 - upon reception error or receive buffer corruption. Ethernet controller
needs to be restarted.
2 - received packet was not sent to us (not our IP, nor IP broadcast address).
3 - received IP packet was not IPv4.
4 - received packet was of type unknown to the library.

This is MAC module routine. It processes next received packet if such exists.
Packets are processed in the following manner:
Description

 ARP & ICMP requests are replied automatically.
 upon TCP request the Ethernet_UserTCP function is called for further processing.
 upon UDP request the Ethernet_UserUDP function is called for further processing.

Note: Ethernet_doPacket must be called as often as possible in user's code.
Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

while true
...
Ethernet_doPacket()
...
wend

' process received packets

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Ethernet_putByte
Prototype

sub procedure Ethernet_putByte(dim v as byte)

Returns

Nothing.
This is MAC module routine. It stores one byte to address pointed by the current Ethernet controller's write pointer (EWRPT).

Description

Parameters:


v: value to store

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
data as byte
...
Ethernet_putByte(data)

' put an byte into ethernet buffer

Ethernet_putBytes
Prototype

sub procedure Ethernet_putBytes(dim ptr as ^byte, dim n as byte)

Returns

Nothing.
This is MAC module routine. It stores requested number of bytes into Ethernet
controller's RAM starting from current Ethernet controller's write pointer
(EWRPT) location.

Description

Parameters:
 ptr: RAM buffer containing bytes to be written into Ethernet controller's RAM.
 n: number of bytes to be written

268

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
buffer as byte[17]
...
buffer = "mikroElektronika"
...
Ethernet_putBytes(buffer, 16)
buffer

' put an RAM array into ethernet

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Ethernet_putConstBytes
Prototype

sub procedure Ethernet_putConstBytes(const ptr as ^byte, dim n as
byte)

Returns

Nothing.
This is MAC module routine. It stores requested number of const bytes into Ethernet controller's RAM starting from current Ethernet controller's write pointer
(EWRPT) location.

Description

Parameters:
 ptr: const buffer containing bytes to be written into Ethernet controller's RAM.
 n: number of bytes to be written.

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

const
buffer as byte[17]
...
buffer = "mikroElektronika"
...
Ethernet_putConstBytes(buffer, 16) ' put a const array into
ethernet buffer

Ethernet_putString
Prototype

sub function Ethernet_putString(dim ptr as ^byte) as word

Returns

Number of bytes written into Ethernet controller's RAM.
This is MAC module routine. It stores whole string (excluding null termination)
into Ethernet controller's RAM starting from current Ethernet controller's write
pointer (EWRPT) location.

Description
Parameters:


ptr: string to be written into Ethernet controller's RAM.

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
buffer as string[16]
...
buffer = "mikroElektronika"
...
Ethernet_putString(buffer) ' put a RAM string into ethernet
buffer

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Ethernet_putConstString
Prototype

sub function Ethernet_putConstString(const ptr as ^byte) as word

Returns

Number of bytes written into Ethernet controller's RAM.
This is MAC module routine. It stores whole const string (excluding null termination) into Ethernet controller's RAM starting from current Ethernet controller's
write pointer (EWRPT) location.

Description
Parameters:


ptr: const string to be written into Ethernet controller's RAM.

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

const
buffer as string[16]
...
buffer = "mikroElektronika"
...
Ethernet_putConstString(buffer) ' put a const string into ethernet buffer

Ethernet_getByte

270

Prototype

sub function Ethernet_getByte() as byte

Returns

Byte read from Ethernet controller's RAM.

Description

This is MAC module routine. It fetches a byte from address pointed to by current Ethernet controller's read pointer (ERDPT).

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
buffer as byte
...
buffer = Ethernet_getByte()
buffer

' read a byte from ethernet

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Ethernet_getBytes
Prototype

sub procedure Ethernet_getBytes(dim ptr as ^byte, dim addr as
word, dim n as byte)

Returns

Nothing.
This is MAC module routine. It fetches equested number of bytes from Ethernet
controller's RAM starting from given address. If value of 0xFFFF is passed as
the address parameter, the reading will start from current Ethernet controller's
read pointer (ERDPT) location.

Description

Parameters:




ptr: buffer for storing bytes read from Ethernet controller's RAM.
addr: Ethernet controller's RAM start address. Valid values: 0..8192.
n: number of bytes to be read.

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
buffer as byte[16]
...
Ethernet_getBytes(buffer, 0x100, 16) ' read 16 bytes, starting
from address 0x100

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Ethernet_UserTCP
Prototype

sub function Ethernet_UserTCP(dim byref remoteHost as byte[4],
dim remotePort, localPort, reqLength as word) as word



Returns

0 - there should not be a reply to the request.
Length of TCP/HTTP reply data field - otherwise.

This is TCP module routine. It is internally called by the library. The user
accesses to the TCP/HTTP request by using some of the Ethernet_get routines.
The user puts data in the transmit buffer by using some of the Ethernet_put routines. The function must return the length in bytes of the TCP/HTTP reply, or 0 if
there is nothing to transmit. If there is no need to reply to the TCP/HTTP
requests, just define this function with return(0) as a single statement.
Description

Parameters:





remoteHost: client's IP address.
remotePort: client's TCP port.
localPort: port to which the request is sent.
reqLength: TCP/HTTP request data field length.

Note: The function source code is provided with appropriate example projects.
The code should be adjusted by the user to achieve desired reply.

272

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

This function is internally called by the library and should not be called by the
user's code.

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Ethernet_UserUDP
Prototype
Returns

sub function Ethernet_UserUDP(dim byref remoteHost as byte[4],
dim remotePort, destPort, reqLength as word) as word



0 - there should not be a reply to the request.
Length of UDP reply data field - otherwise.

This is UDP module routine. It is internally called by the library. The user
accesses to the UDP request by using some of the Ethernet_get routines. The
user puts data in the transmit buffer by using some of the Ethernet_put routines.
The function must return the length in bytes of the UDP reply, or 0 if nothing to
transmit. If you don't need to reply to the UDP requests, just define this function
with a return(0) as single statement.
Parameters:
Description

Parameters:





remoteHost: client's IP address.
remotePort: client's port.
destPort: port to which the request is sent.
reqLength: UDP request data field length.

Note: The function source code is provided with appropriate example projects.
The code should be adjusted by the user to achieve desired reply.
Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

This function is internally called by the library and should not be called by the
user's code.

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Ethernet_getIpAddress
Prototype

sub function Ethernet_getIpAddress() as word

Returns

Ponter to the global variable holding IP address.
This routine should be used when DHCP server is present on the network to
fetch assigned IP address.

Description

Note: User should always copy the IP address from the RAM location returned
by this routine into it's own IP address buffer. These locations should not be
altered by the user in any case!

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
ipAddr as byte[4] ' user IP address buffer
...
memcpy(ipAddr, Ethernet_getIpAddress(), 4) ' fetch IP address

Ethernet_getGwIpAddress
Prototype

sub function Ethernet_getGwIpAddress() as word

Returns

Ponter to the global variable holding gateway IP address.
This routine should be used when DHCP server is present on the network to
fetch assigned gateway IP address.

Description

274

Note: User should always copy the IP address from the RAM location returned
by this routine into it's own gateway IP address buffer. These locations should
not be altered by the user in any case!

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
gwIpAddr as byte[4] ' user gateway IP address buffer
...
memcpy(gwIpAddr, Ethernet_getGwIpAddress(), 4) ' fetch gateway
IP address

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Ethernet_getDnsIpAddress
Prototype

sub function Ethernet_getDnsIpAddress() as word

Returns

Ponter to the global variable holding DNS IP address.
This routine should be used when DHCP server is present on the network to
fetch assigned DNS IP address.

Description

Note: User should always copy the IP address from the RAM location returned
by this routine into it's own DNS IP address buffer. These locations should not
be altered by the user in any case!

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
dnsIpAddr as byte[4] ' user DNS IP address buffer
...
memcpy(dnsIpAddr, Ethernet_getDnsIpAddress(), 4) ' fetch DNS
server address

Ethernet_getIpMask
Prototype

sub function Ethernet_getIpMask() as word

Returns

Ponter to the global variable holding IP subnet mask.
This routine should be used when DHCP server is present on the network to
fetch assigned IP subnet mask.

Description

Note: User should always copy the IP address from the RAM location returned
by this routine into it's own IP subnet mask buffer. These locations should not
be altered by the user in any case!

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
IpMask as byte[4] ' user IP subnet mask buffer
...
memcpy(IpMask, Ethernet_getIpMask(), 4) ' fetch IP subnet mask

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Ethernet_confNetwork
Prototype

sub procedure Ethernet_confNetwork(dim byref ipMask, gwIpAddr,
dnsIpAddr as byte[4])

Returns

Nothing.
Configures network parameters (IP subnet mask, gateway IP address, DNS IP
address) when DHCP is not used.
Parameters:

Description  ipMask: IP subnet mask.
 gwIpAddr gateway IP address.
 dnsIpAddr: DNS IP address.
Note: The above mentioned network parameters should be set by this routine
only if DHCP module is not used. Otherwise DHCP will override these settings.
Requires

Example

Ethernet module has to be initialized. See Ethernet_Init.
dim
ipMask
as
255.255.255.0)
gwIpAddr as
dnsIpAddr as
...
gwIpAddr[0]
gwIpAddr[1]
gwIpAddr[2]
gwIpAddr[3]

=
=
=
=

192
168
20
6

dnsIpAddr[0]
dnsIpAddr[1]
dnsIpAddr[2]
dnsIpAddr[3]

=
=
=
=

192
168
20
100

byte[4]

' network mask (for example :

byte[4]
byte[4]

' gateway (router) IP address
' DNS server IP address

ipMask[0]
= 255
ipMask[1]
= 255
ipMask[2]
= 255
ipMask[3]
= 0
...
Ethernet_confNetwork(ipMask, gwIpAddr, dnsIpAddr) ' set network
configuration parameters

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Ethernet_arpResolve
Prototype

sub function Ethernet_arpResolve(dim byref ip as byte[4], dim
tmax as byte) as word

Returns

 MAC address behind the IP address - the requested IP address was resolved.
 0 - otherwise.

Description

This is ARP module routine. It sends an ARP request for given IP address and
waits for ARP reply. If the requested IP address was resolved, an ARP cash
entry is used for storing the configuration. ARP cash can store up to 3 entries.
For ARP cash structure refer to "eth_j60LibDef.h" header file in the compiler's Uses/P18 folder.
Parameters:



ip: IP address to be resolved.
tmax: time in seconds to wait for an reply.

Note: The Ethernet services are not stopped while this routine waits for ARP
reply. The incoming packets will be processed normaly during this time.
Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
IpAddr as byte[4] ' IP address
...
IpAddr[0] = 192
IpAddr[0] = 168
IpAddr[0] = 1
IpAddr[0] = 1
...
Ethernet_arpResolve(IpAddr, 5) ' get MAC address behind the
above IP address, wait 5 secs for the response

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Ethernet_sendUDP
Prototype
Returns

sub function Ethernet_sendUDP(dim byref destIP as byte[4], dim
sourcePort, destPort as word, dim pkt as ^byte, dim pktLen as
word) as byte



1 - UDP packet was sent successfully.
0 - otherwise.

This is UDP module routine. It sends an UDP packet on the network.
Parameters:
Description

278







destIP: remote host IP address.
sourcePort: local UDP source port number.
destPort: destination UDP port number.
pkt: packet to transmit.
pktLen: length in bytes of packet to transmit.

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
IpAddr as byte[4] ' remote IP address
...
IpAddr[0] = 192
IpAddr[0] = 168
IpAddr[0] = 1
IpAddr[0] = 1
...
Ethernet_sendUDP(IpAddr, 10001, 10001, "Hello", 5) ' send Hello
message to the above IP address, from UDP port 10001 to UDP port
10001

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Ethernet_dnsResolve
Prototype

sub function Ethernet_dnsResolve(dim byref host as byte[4], dim
tmax as byte) as word


Returns

pointer to the location holding the IP address - the requested host name
was resolved.
 0 - otherwise.
This is DNS module routine. It sends an DNS request for given host name and
waits for DNS reply. If the requested host name was resolved, it's IP address is
stored in library global variable and a pointer containing this address is returned
by the routine. UDP port 53 is used as DNS port.
Parameters:

Description




host: host name to be resolved.
tmax: time in seconds to wait for an reply.

Note: The Ethernet services are not stopped while this routine waits for DNS
reply. The incoming packets will be processed normaly during this time.
Note: User should always copy the IP address from the RAM location returned
by this routine into it's own resolved host IP address buffer. These locations
should not be altered by the user in any case!
Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

dim
remoteHostIpAddr as byte[4]
' user host IP address buffer
...
' SNTP server:
' Zurich, Switzerland: Integrated Systems Lab, Swiss Fed. Inst.
of Technology
' 129.132.2.21: swisstime.ethz.ch
' Service Area: Switzerland and Europe
memcpy(remoteHostIpAddr,
Ethernet_dnsResolve("swisstime.ethz.ch", 5), 4)

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Ethernet_initDHCP
Prototype
Returns

sub function Ethernet_initDHCP(dim tmax as byte) as byte



1 - network parameters were obtained successfully.
0 - otherwise.

This is DHCP module routine. It sends an DHCP request for network parameters (IP, gateway, DNS addresses and IP subnet mask) and waits for DHCP
reply. If the requested parameters were obtained successfully, their values are
stored into the library global variables.
These parameters can be fetched by using appropriate library IP get routines:





Description

Ethernet_getIpAddress - fetch IP address.
Ethernet_getGwIpAddress - fetch gateway IP address.
Ethernet_getDnsIpAddress - fetch DNS IP address.
Ethernet_getIpMask - fetch IP subnet mask.

UDP port 68 is used as DHCP client port and UDP port 67 is used as DHCP
server port.
Parameters:
 tmax: time in seconds to wait for an reply.
Note: The Ethernet services are not stopped while this routine waits for DNS
reply. The incoming packets will be processed normaly during this time.

Note: When DHCP module is used, global library variable
Ethernet_userTimerSec is used to keep track of time. It is user responsibility

to increment this variable each second in it's code.

280

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

...
Ethernet_initDHCP(5) ' get network configuration from DHCP
server, wait 5 sec for the response
...

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Ethernet_doDHCPLeaseTime
Prototype
Returns

sub function Ethernet_doDHCPLeaseTime() as byte



0 - lease time has not expired yet.
1 - lease time has expired, it's time to renew it.

This is DHCP module routine. It takes care of IP address lease time by decreDescription menting the global lease time library counter. When this time expires, it's time to
contact DHCP server and renew the lease.
Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

while true
...
if(Ethernet_doDHCPLeaseTime() <> 0) then
... ' it's time to renew the IP address lease
end if
wend

Ethernet_renewDHCP
Prototype
Returns

sub function Ethernet_renewDHCP(dim tmax as byte) as byte



1 - upon success (lease time was renewed).
0 - otherwise (renewal request timed out).

This is DHCP module routine. It sends IP address lease time renewal request to
DHCP server.
Description Parameters:


tmax: time in seconds to wait for an reply.

Requires

Ethernet module has to be initialized. See Ethernet_Init.

Example

while true
...
if(Ethernet_doDHCPLeaseTime() <> 0) then
Ethernet_renewDHCP(5) ' it's time to renew the IP address
lease, with 5 secs for a reply
end if
...
wend

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Library Example

This code shows how to use the PIC18FxxJ60 Ethernet library :



the board will reply to ARP & ICMP echo requests
the board will reply to UDP requests on any port :
returns the request in upper char with a header made of remote
host IP & port number
 the board will reply to HTTP requests on port 80, GET method with path
names :

/ will return the HTML main page
/s will return board status as text string
/t0 ... /t7 will toggle RD0 to RD7 bit and return HTML main
page
all other requests return also HTML main page.

program enc_ethernet
' ***********************************
' * RAM variables
' *
dim myMacAddr
myIpAddr
gwIpAddr
ipMask
255.255.255.0)
dnsIpAddr

as
as
as
as

byte[6]
byte[4]
byte[4]
byte[4]

as byte[4]

'
'
'
'

my MAC address
my IP address
gateway (router) IP address
network mask (for example:

' DNS server IP address

const httpHeader as string[31] = "HTTP/1.1 200 OK"+chr(10)+"Contenttype: " ' HTTP header
const httpMimeTypeHTML as string[13]
= "text/html"+chr(10)+chr(10)
' HTML MIME type
const
httpMimeTypeScript
as
string[14]
=
"text/plain"+chr(10)+chr(10)
' TEXT MIME type
const httpMethod as string[5]
= "GET /"
' *
' * web page, splited into 2 parts :
' * when coming short of ROM, fragmented data is handled more efficiently by linker
' *
' * this HTML page calls the boards to get its status, and builds
itself with javascript
' *
const indexPage as string[763] =

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"" +
""+
"
PIC18FxxJ60 Mini Web Server
"+
"Reload"+
""+
"
 "+

""+
""+
""+
"
ADC
AN2

AN3
 "+
""+
""
const indexPage2 as string[470] =
"
PORTB
"+
" "+
""+
""

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"
PORTD
"+
"This is HTTP request #
"
dim

getRequest
dyna
httpCounter
txt

as
as
as
as

byte[15]
' HTTP request buffer
byte[30]
' buffer for dynamic response
word
' counter of HTTP requests
string[11]

' *******************************************
' * user defined functions
' *
' *
* this function is called by the library
' * the user accesses to the HTTP request by successive calls to
Ethernet_getByte()
' * the user puts data in the transmit buffer by successive calls to
Ethernet_putByte()
' * the function must return the length in bytes of the HTTP reply,
or 0 if nothing to transmit
' *
' * if you don't need to reply to HTTP requests,
' * just define this function with a return(0) as single statement
' *
' *
sub function Ethernet_UserTCP(dim byref remoteHost as byte[4],
dim remotePort, localPort, reqLength as word) as word
dim i as word
' my reply length
bitMask as byte ' for bit mask
txt
as string[11]
result = 0
if(localPort <> 80) then ' I listen only to web request on port
80
result = 0
exit
end if
'get 10 first bytes only of the request, the rest does not mat
ter here
for i = 0 to 10
getRequest[i] = Ethernet_getByte()
next i
getRequest[i] = 0
' copy httpMethod to ram for use in memcmp routine
for i = 0 to 4
txt[i] = httpMethod[i]
next i

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if(memcmp(@getRequest, @txt, 5) <> 0) then
is supported here
result = 0
exit
end if
Inc(httpCounter)

' only GET method

' one more request done

if(getRequest[5] = "s") then
' if request path name
starts with s, store dynamic data in transmit buffer
' the text string replied by this request can be interpreted
as javascript statements
' by browsers
result = Ethernet_putConstString(@httpHeader)
' HTTP header
result = result + Ethernet_putConstString(@httpMimeTypeScript)
' with text MIME type
' add AN2 value to reply
WordToStr(ADC_Read(2), dyna)
txt = "var AN2="
result = result + Ethernet_putString(@txt)
result = result + Ethernet_putString(@dyna)
txt = ";"
result = result + Ethernet_putString(@txt)
' add AN3 value to reply
WordToStr(ADC_Read(3), dyna)
txt = "var AN3="
result = result + Ethernet_putString(@txt)
result = result + Ethernet_putString(@dyna)
txt = ";"
result = result + Ethernet_putString(@txt)
' add PORTB value (buttons) to reply
txt = "var PORTB="
result = result + Ethernet_putString(@txt)
WordToStr(PORTB, dyna)
result = result + Ethernet_putString(@dyna)
txt = ";"
result = result + Ethernet_putString(@txt)
' add PORTD value (LEDs) to reply
txt = "var PORTD="
result = result + Ethernet_putString(@txt)
WordToStr(PORTD, dyna)
result = result + Ethernet_putString(@dyna)
txt = ";"
result = result + Ethernet_putString(@txt)

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' add HTTP requests counter to reply
WordToStr(httpCounter, dyna)
txt = "var REQ="
result = result + Ethernet_putString(@txt)
result = result + Ethernet_putString(@dyna)
txt = ";"
result = result + Ethernet_putString(@txt)
else
if(getRequest[5] = "t") then ' if request path name starts
with t, toggle PORTD (LED) bit number that comes after
bitMask = 0
if(isdigit(getRequest[6]) <> 0) then
' if 0 <= bit number
<= 9, bits 8 & 9 does not exist but does not matter
bitMask = getRequest[6] - "0" ' convert ASCII to integer
bitMask = 1 << bitMask
' create bit mask
PORTD
= PORTD xor bitMask
' toggle PORTD with xor oper
ator
end if
end if
end if
if(result = 0) then ' what do to by default
result = Ethernet_putConstString(@httpHeader) ' HTTP header
result = result + Ethernet_putConstString(@httpMimeTypeHTML)
' with HTML MIME type
result = result + Ethernet_putConstString(@indexPage)
' HTML page first part
result = result + Ethernet_putConstString(@indexPage2)
' HTML page second part
end if
' return to the library with the number of bytes to transmit
end sub
'*
' * this function is called by the library
' * the user accesses to the UDP request by successive calls to
Ethernet_getByte()
' * the user puts data in the transmit buffer by successive calls to
Ethernet_putByte()
' * the function must return the length in bytes of the UDP reply,
or 0 if nothing to transmit
' *
' * if you don't need to reply to UDP requests,
' * just define this function with a return(0) as single statement
' *
' *
sub function Ethernet_UserUDP(dim byref remoteHost as byte[4],
dim remotePort, destPort, reqLength
as word) as word

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dim txt as string[5]
result = 0
' reply is made of the remote host IP address in human readable
format
byteToStr(remoteHost[0], dyna)
' first IP address byte
dyna[3] = "."
byteToStr(remoteHost[1], txt)
' second
dyna[4] = txt[0]
dyna[5] = txt[1]
dyna[6] = txt[2]
dyna[7] = "."
byteToStr(remoteHost[2], txt)
' second
dyna[8] = txt[0]
dyna[9] = txt[1]
dyna[10] = txt[2]
dyna[11] = "."
byteToStr(remoteHost[3], txt)
dyna[12] = txt[0]
dyna[13] = txt[1]
dyna[14] = txt[2]
dyna[15] = ":"

' second

' add separator

' then remote host port number
WordToStr(remotePort, txt)
dyna[16] = txt[0]
dyna[17] = txt[1]
dyna[18] = txt[2]
dyna[19] = txt[3]
dyna[20] = txt[4]
dyna[21] = "["
WordToStr(destPort, txt)
dyna[22] = txt[0]
dyna[23] = txt[1]
dyna[24] = txt[2]
dyna[25] = txt[3]
dyna[26] = txt[4]
dyna[27] = "]"
dyna[28] = 0
' the total length of the request is the length of the dynam
ic string plus the text of the request
result = 28 + reqLength
' puts the dynamic string into the transmit buffer
Ethernet_putBytes(@dyna, 28)
'then puts the request string converted into upper char into
the transmit buffer

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while(reqLength <> 0)
Ethernet_putByte(Ethernet_getByte())
reqLength = reqLength - 1
wend

' back to the library with the length of the UDP reply
end sub
main:
ADCON1 = 0x0B
CMCON = 0x07

' ADC convertors will be used with AN2 and AN3
' turn off comparators

PORTA
TRISA

= 0
= 0x0C

PORTB
TRISB

= 0
= 0xFF

' set PORTB as input for buttons

PORTD
TRISD

= 0
= 0

' set PORTD as output

' RA2:RA3 - analog inputs
' RA1:RA0 - ethernet LEDA:LEDB

httpCounter = 0
' set mac address
myMacAddr[0] = 0x00
myMacAddr[1] = 0x14
myMacAddr[2] = 0xA5
myMacAddr[3] = 0x76
myMacAddr[4] = 0x19
myMacAddr[5] = 0x3F
' set IP address
myIpAddr[0] = 192
myIpAddr[1] = 168
myIpAddr[2] = 20
myIpAddr[3] = 60
' set gateway address
gwIpAddr[0] = 192
gwIpAddr[1] = 168
gwIpAddr[2] = 20
gwIpAddr[3] = 6
' set dns address
dnsIpAddr[0] = 192
dnsIpAddr[1] = 168
dnsIpAddr[2] = 20
dnsIpAddr[3] = 1

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' ‘set subnet mask
ipMask[0]
ipMask[1]
ipMask[2]
ipMask[3]
'
'
'
'
'
'
'

=
=
=
=

255
255
255
0

*
* starts ENC28J60 with :
* reset bit on PORTC.B0
* CS bit on PORTC.B1
* my MAC & IP address
* full duplex
*
Ethernet_Init(myMacAddr, myIpAddr, _Ethernet_FULLDUPLEX)
' init
ethernet module
Ethernet_setUserHandlers(@Ethernet_UserTCP, @Ethernet_UserUDP) '
set user handlers
' dhcp will not be used here, so use preconfigured addresses
Ethernet_confNetwork(ipMask, gwIpAddr, dnsIpAddr)
while TRUE
Ethernet_doPacket()

' do forever
' process incoming Ethernet packets

'
'
'
'
'

*
* add your stuff here if needed
* Ethernet_doPacket() must be called as often as possible
* otherwise packets could be lost
*
wend
end.

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FLASH MEMORY LIBRARY

This library provides routines for accessing microcontroller Flash memory. Note that
prototypes differ for PIC16 and PIC18 families.
Note: Due to the P16/P18 family flash specifics, flash library is MCU dependent.
Since the P18 family differ significantlly in number of bytes that can be erased
and/or written to specific MCUs, the appropirate suffix is added to the names of
functions in order to make it easier to use them. Flash memory operations are MCU
dependent :
1. Read operation supported. For this group of MCU's only read function is implemented.
2. Read and Write operations supported (write is executed as erase-and-write). For
this group of MCU's read and write functions are implemented. Note that write operation which is executed as erase-and-write, may write less bytes than it erases.
3. Read, Write and Erase operations supported. For this group of MCU's read, write
and erase functions are implemented. Further more, flash memory block has to be
erased prior to writting (write operation is not executed as erase-and-write).
Please refer to MCU datasheet before using flash library.
Please refer to MCU datasheet before using flash library.

Library Routines














290

FLASH_Read
FLASH_Read_N_Bytes
FLASH_Write
FLASH_Write_8
FLASH_Write_16
FLASH_Write_32
FLASH_Write_64
FLASH_Erase
FLASH_Erase_64
FLASH_Erase_1024
FLASH_Erase_Write
FLASH_Erase_Write_64
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FLASH_Read
' for PIC16
sub function FLASH_Read(dim Address as word) as word

Prototype
' forPIC18
sub function FLASH_Read(dim address as dword)as byte

Returns

Returns data byte from Flash memory.

Description Reads data from the specified address in Flash memory.
Requires

Nothing.

Example

' for PIC18
dim tmp as byte
...
main:
...
tmp = FLASH_Read(0x0D00)
...
end.

FLASH_Read_N_Bytes
Prototype

' for PIC18
sub procedure FLASH_Read_N_Bytes(dim address as longint, dim
byref data as byte, dim N as word)

Returns

Nothing.

Description

Reads N data from the specified address in Flash memory to varibale pointed
by data

Requires

Nothing.

Example

FLASH_Read_N(0x0D00,data_buffer,sizeof(data_buffer))

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FLASH_Write

' for PIC16
sub procedure FLASH_Write(dim Address as word, dim byref Data as
word[4])
' forPIC18
sub procedure FLASH_Write_8(dim address as dword, dim byref data
as byte[8])

Prototype

sub procedure FLASH_Write_16(dim address as dword, dim byref data
as byte[16])
sub procedure FLASH_Write_32(dim address as dword, dim byref data
as byte[32])
sub procedure FLASH_Write_64(dim address as dword, dim byref data
as byte[64])

Returns

Nothing.

Writes block of data to Flash memory. Block size is MCU dependent.
P16: This function may erase memory segment before writing block of data to it
(MCU dependent). Furthermore, memory segment which will be erased may be
greater than the size of the data block that will be written (MCU dependent).
Description Therefore it is recommended to write as many bytes as you erase.
FLASH_Write writes 4 flash memory locations in a row, so it needs to be called
as many times as it is necessary to meet the size of the data block that will be
written.
P18: This function does not perform erase prior to write.
Requires

Flash memory that will be written may have to be erased before this function is
called (MCU dependent). Refer to MCU datasheet for details.
Write consecutive values in 64 consecutive locations, starting from 0x0D00:

Example

292

dim toWrite as byte[64]
...
main:
...
' initialize array:
for i = 0 to 63
toWrite[i] = i
next i
...
' write contents of the array to the address 0x0D00:
FLASH_Write_64(0x0D00, toWrite)
...
end.

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FLASH_Erase
' for PIC16
sub procedure FLASH_Erase(dim address as word)

Prototype

'forPIC18
sub procedure FLASH_Erase_64(dim address as dword)
sub procedure FLASH_Erase_1024(dim address as dword)

Returns

Nothing.

Erases memory block starting from a given address. For P16 familly is impleDescription mented only for those MCU's whose flash memory does not support erase-andwrite operations (refer to datasheet for details).
Requires

Nothing.
Erase 64 byte memory memory block, starting from address $0D00:

Example
FLASH_Erase_64($0D00)

FLASH_Erase_Write
' for PIC18

Prototype

sub procedure FLASH_Erase_Write_64(dim address as dword, dim
byref data as byte[64])
sub procedure FLASH_Erase_Write_1024(dim address as dword, dim
byref data as byte[1024])

Returns

None.

Description Erase then write memory block starting from a given address.
Requires

Nothing.

Example

dim toWrite as byte[64]
...
main:
...
' initialize array:
for i = 0 to 63
toWrite[i] = i
next i ...
' erase block of memory at address 0x0D00 then write contents of
the array to the address 0x0D00:
FLASH_Erase_Write_64(0x0D00, toWrite)
...
end.

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Library Example

This is a simple demonstration how to use to PIC16 internal flash memory to store
data. The data is being written starting from the given location; then, the same locations are read and the data is displayed on PORTB and PORTC.
program Flash_Write
dim counter as byte
addr, data_ as word
dataAR as word[4][4]
ANSEL = 0
ANSELH = 0
C1ON_bit = 0
C2ON_bit = 0
PORTB = 0
TRISB = 0
PORTC = 0
TRISC = 0
Delay_ms(500)

' Configure AN pins as digital
' Disable comparators
'
'
'
'

Initial PORTB value
Set PORTB as output
Initial PORTC value
Set PORTC as output

'
'
'
'
'

All block writes
to program memory are done as 16-word erase by
eight-word write operations. The write operation is
edge-aligned and cannot occur across boundaries.
Therefore it is recommended to perform flash writes in 16-word
chunks.
' That is why lower 4 bits of start address [3:0] must be zero.
' Since FLASH_Write routine performs writes in 4-word chunks,
' we need to call it 4 times in a row.
dataAR[0][0]=
dataAR[0][1]=
dataAR[0][2]=
dataAR[0][3]=
dataAR[1][0]=
dataAR[1][1]=
dataAR[1][2]=
dataAR[1][3]=
dataAR[2][0]=
dataAR[2][1]=
dataAR[2][2]=
dataAR[2][3]=
dataAR[3][0]=
dataAR[3][1]=
dataAR[3][2]=
dataAR[3][3]=

294

0x3FAA+0
0x3FAA+1
0x3FAA+2
0x3FAA+3
0x3FAA+4
0x3FAA+5
0x3FAA+6
0x3FAA+7
0x3FAA+8
0x3FAA+9
0x3FAA+10
0x3FAA+11
0x3FAA+12
0x3FAA+13
0x3FAA+14
0x3FAA+15

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addr = 0x0430
' starting Flash address, valid for P16F88
for counter = 0 to 3
' write some data to Flash
Delay_ms(100)
FLASH_Write(addr+counter*4, dataAR[counter])
next counter
Delay_ms(500)
addr = 0x0430
for counter = 0 to 15
data_ = FLASH_Read(addr)
Inc(addr)
Delay_us(10)
PORTB = data_
PORTC = word(data_ >> 8)
Delay_ms(500)
next counter
end.

' P16's FLASH is 14-bit wide, so
' two MSB's will always be '00'
' display data on PORTB LS Byte
' and PORTC MS Byte

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GRAPHIC LCD LIBRARY

The mikroBasic PRO for PIC provides a library for operating Graphic LCD 128x64
(with commonly used Samsung KS108/KS107 controller).
For creating a custom set of Glcd images use Glcd Bitmap Editor Tool.

External dependencies of Graphic LCD Library
The following variables
must be defined in all
projects using Graphic
LCD Library:
dim GLCD_DataPort as
byte sfr external
dim GLCD_CS1 as sbit
sfr external
dim GLCD_CS2 as sbit
sfr external
dim GLCD_RS as sbit
sfr external
dim GLCD_RW as sbit
sfr external
dim GLCD_RST as sbit
sfr external
dim GLCD_EN as sbit
sfr external
dim
GLCD_CS1_Direction as
sbit sfr external
dim
GLCD_CS2_Direction as
sbit sfr external
dim GLCD_RS_Direction
as sbit sfr external
dim GLCD_RW_Direction
as sbit sfr external
dim GLCD_EN_Direction
as sbit sfr external
dim
GLCD_RST_Direction as
sbit sfr external

296

Description:

Glcd Data Port
Chip Select 1 line.
Chip Select 2 line.
Register select line.
Read/Write line.
Reset line.
Enable line.

Example :

dim GLCD_DataPort as
byte at PORTD_bit
dim GLCD_CS1 as sbit
at RB0_bit
dim GLCD_CS2 as sbit
at RB1_bit
dim GLCD_RS as sbit
at RB2_bit
dim GLCD_RW as sbit
at RB3_bit
dim GLCD_RST as sbit
at RB4_bit
dim GLCD_EN as sbit
at RB5_bit

Direction of the Chip Select
dim GLCD_CS1_Direction
1 pin.
as sbit at TRISB0_bit

Direction of the Chip Select
dim GLCD_CS2_Direction
2 pin.
as sbit at TRISB1_bit
dim GLCD_RS_Direction
Direction of the Register
as sbit at TRISB2_bit
select pin.
Direction of the Read/Write dim GLCD_RW_Direction
as sbit at TRISB3_bit
pin.
Direction of the Enable pin. dim GLCD_EN_Direction

Direction of the Reset pin.

as sbit at TRISB4_bit
dim GLCD_RST_Direction
as sbit at TRISB5_bit

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Library Routines
Basic routines:







Glcd_Init
Glcd_Set_Side
Glcd_Set_X
Glcd_Set_Page
Glcd_Read_Data
Glcd_Write_Data

Advanced routines:













Glcd_Fill
Glcd_Dot
Glcd_Line
Glcd_V_Line
Glcd_H_Line
Glcd_Rectangle
Glcd_Box
Glcd_Circle
Glcd_Set_Font
Glcd_Write_Char
Glcd_Write_Text
Glcd_Image

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Glcd_Init
Prototype

sub procedure Glcd_Init()

Returns

Nothing.

Description

Initializes the Glcd module. Each of the control lines is both port and pin configurable, while data lines must be on a single port (pins <0:7>).
Global variables :

Requires









GLCD_CS1 : Chip select 1 signal pin
GLCD_CS2 : Chip select 2 signal pin
GLCD_RS : Register select signal pin
GLCD_RW : Read/Write Signal pin
GLCD_EN : Enable signal pin
GLCD_RST : Reset signal pin
GLCD_DataPort : Data port








GLCD_CS1_Direction : Direction of the Chip select 1 pin
GLCD_CS2_Direction : Direction of the Chip select 2 pin
GLCD_RS_Direction : Direction of the Register select signal pin
GLCD_RW_Direction : Direction of the Read/Write signal pin
GLCD_EN_Direction : Direction of the Enable signal pin
GLCD_RST_Direction : Direction of the Reset signal pin

must be defined before using this function.
' Glcd module connections
dim GLCD_DataPort as byte at PORTD
dim GLCD_CS1
GLCD_CS2
GLCD_RS
GLCD_RW
GLCD_EN
GLCD_RST

Example

as
as
as
as
as
as

sbit
sbit
sbit
sbit
sbit
sbit

at
at
at
at
at
at

RB0_bit
RB1_bit
RB2_bit
RB3_bit
RB4_bit
RB5_bit

dim GLCD_CS1_Direction as sbit
GLCD_CS2_Direction as sbit
GLCD_RS_Direction as sbit
GLCD_RW_Direction as sbit
GLCD_EN_Direction as sbit
GLCD_RST_Direction as sbit
' End Glcd module connections

at
at
at
at
at
at

TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit
TRISB4_bit
TRISB5_bit

...
Glcd_Init()

298

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Glcd_Set_Side
Prototype

sub procedure Glcd_Set_Side(dim x_pos as byte)

Returns

Nothing.
Selects Glcd side. Refer to the Glcd datasheet for detailed explaination.
Parameters :
 x_pos: position on x-axis. Valid values: 0..127

Description
The parameter x_pos specifies the Glcd side: values from 0 to 63 specify the
left side, values from 64 to 127 specify the right side.
Note: For side, x axis and page layout explanation see schematic at the bottom
of this page.
Requires

Glcd needs to be initialized, see Glcd_Init routine.
The following two lines are equivalent, and both of them select the left side of
Glcd:

Example
Glcd_Select_Side(0)
Glcd_Select_Side(10)

Glcd_Set_X
Prototype

sub procedure Glcd_Set_X(dim x_pos as byte)

Returns

Nothing.
Sets x-axis position to x_pos dots from the left border of Glcd within the selected side.
Parameters :

Description
 x_pos: position on x-axis. Valid values: 0..63

Note: For side, x axis and page layout explanation see schematic at the bottom
of this page.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

Glcd_Set_X(25)

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Glcd_Set_Page
Prototype

sub procedure Glcd_Set_Page(dim page as byte)

Returns

Nothing.
Selects page of the Glcd.
Parameters :

Description



page: page number. Valid values: 0..7

Note: For side, x axis and page layout explanation see schematic at the bottom
of this page.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

Glcd_Set_Page(5)

Glcd_Read_Data
Prototype

sub function Glcd_Read_Data() as byte

Returns

One byte from Glcd memory.

Description

Reads data from from the current location of Glcd memory and moves to the
next location.
Glcd needs to be initialized, see Glcd_Init routine.

Requires

Example

300

Glcd side, x-axis position and page should be set first. See functions
Glcd_Set_Side, Glcd_Set_X, and Glcd_Set_Page.
dim data as byte
...
data = Glcd_Read_Data()

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Glcd_Write_Data
Prototype

sub procedure Glcd_Write_Data(dim ddata as byte)

Returns

Nothing.
Writes one byte to the current location in Glcd memory and moves to the next
location.

Description

Parameters :
 ddata: data to be written

Glcd needs to be initialized, see Glcd_Init routine.
Requires

Example

Glcd side, x-axis position and page should be set first. See functions
Glcd_Set_Side, Glcd_Set_X, and Glcd_Set_Page.
dim data as byte
...
Glcd_Write_Data(data)

Glcd_Fill
Prototype

sub procedure Glcd_Fill(dim pattern as byte)

Returns

Nothing.
Fills Glcd memory with the byte pattern.
Parameters :

Description

 pattern: byte to fill Glcd memory with

To clear the Glcd screen, use Glcd_Fill(0).
To fill the screen completely, use Glcd_Fill(0xFF).
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Clear screen
Glcd_Fill(0)

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Glcd_Dot
Prototype

sub procedure Glcd_Dot(dim x_pos as byte, dim y_pos as byte, dim
color as byte)

Returns

Nothing.
Draws a dot on Glcd at coordinates (x_pos, y_pos).
Parameters :

Description





x_pos: x position. Valid values: 0..127
y_pos: y position. Valid values: 0..63
color: color parameter. Valid values: 0..2

The parameter color determines a dot state: 0 clears dot, 1 puts a dot, and 2
inverts dot state.
Note: For x and y axis layout explanation see schematic at the bottom of this page.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Invert the dot in the upper left corner
Glcd_Dot(0, 0, 2)

Glcd_Line
Prototype

sub procedure Glcd_Line(dim x_start as integer, dim y_start as
integer, dim x_end as integer, dim y_end as integer, dim color as
byte)

Returns

Nothing.
Draws a line on Glcd.
Parameters :

Description







x_start: x coordinate of the line start. Valid values: 0..127
y_start: y coordinate of the line start. Valid values: 0..63
x_end: x coordinate of the line end. Valid values: 0..127
y_end: y coordinate of the line end. Valid values: 0..63
color: color parameter. Valid values: 0..2

The parameter color determines the line color: 0 white, 1 black, and 2 inverts
each dot.

302

Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Draw a line between dots (0,0) and (20,30)
Glcd_Line(0, 0, 20, 30, 1)

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Glcd_V_Line
Prototype

sub procedure Glcd_V_Line(dim y_start as byte, dim y_end as byte,
dim x_pos as byte, dim color as byte)

Returns

Nothing.
Draws a vertical line on lcd.
Parameters :

Description






y_start: y coordinate of the line start. Valid values: 0..63
y_end: y coordinate of the line end. Valid values: 0..63
x_pos: x coordinate of vertical line. Valid values: 0..127
color: color parameter. Valid values: 0..2

The parameter color determines the line color: 0 white, 1 black, and 2 inverts
each dot.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Draw a vertical line between dots (10,5) and (10,25)
Glcd_V_Line(5, 25, 10, 1)

Glcd_H_Line
Prototype

sub procedure Glcd_V_Line(dim x_start as byte, dim x_end as byte,
dim y_pos as byte, dim color as byte)

Returns

Nothing.
Draws a horizontal line on Glcd.
Parameters :

Description






x_start: x coordinate of the line start. Valid values: 0..127
x_end: x coordinate of the line end. Valid values: 0..127
y_pos: y coordinate of horizontal line. Valid values: 0..63
color: color parameter. Valid values: 0..2

The parameter color determines the line color: 0 white, 1 black, and 2 inverts
each dot.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Draw a horizontal line between dots (10,20) and (50,20)
Glcd_H_Line(10, 50, 20, 1)

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Glcd_Rectangl
Prototype

sub procedure Glcd_Rectangle(dim x_upper_left as byte, dim
y_upper_left as byte, dim x_bottom_right as byte, dim
y_bottom_right as byte, dim color as byte)

Returns

Nothing.

Draws a rectangle on Glcd.
Parameters :
 x_upper_left: x coordinate of the upper left rectangle corner. Valid values:
0..127
 y_upper_left: y coordinate of the upper left rectangle corner. Valid values:
0..63
Description
 x_bottom_right: x coordinate of the lower right rectangle corner. Valid
values: 0..127
 y_bottom_right: y coordinate of the lower right rectangle corner. Valid
values: 0..63
 color: color parameter. Valid values: 0..2
The parameter color determines the color of the rectangle border: 0 white, 1
black, and 2 inverts each dot.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Draw a rectangle between dots (5,5) and (40,40)
Glcd_Rectangle(5, 5, 40, 40, 1)

Glcd_Box
Prototype

sub procedure Glcd_Box(dim x_upper_left as byte, dim y_upper_left
as byte, dim x_bottom_right as byte, dim y_bottom_right as byte,
dim color as byte)

Returns

Nothing.
Draws a box on Glcd.
Parameters :


x_upper_left: x coordinate of the upper left box corner. Valid values:

0..127
Description



y_upper_left: y coordinate of the upper left box corner. Valid values:



x_bottom_right: x coordinate of the lower right box corner. Valid values:

0..63
0..127



y_bottom_right: y coordinate of the lower right box corner. Valid values:0..63
color: color parameter. Valid values: 0..2
The parameter color determines the color of the box fill: 0 white, 1 black, and 2

inverts each dot.

304

Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Draw a box between dots (5,15) and (20,40)
Glcd_Box(5, 15, 20, 40, 1)

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Glcd_Circle
Prototype

sub procedure Glcd_Circle(dim x_center as integer, dim y_center
as integer, dim radius as integer, dim color as byte)

Returns

Nothing.
Draws a circle on Glcd.
Parameters :





Description

x_center: x coordinate of the circle center. Valid values: 0..127
y_center: y coordinate of the circle center. Valid values: 0..63
radius: radius size
color: color parameter. Valid values: 0..2

The parameter color determines the color of the circle line: 0 white, 1 black,
and 2 inverts each dot.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Draw a circle with center in (50,50) and radius=10
Glcd_Circle(50, 50, 10, 1)

Glcd_Set_Font
Prototype

sub procedure Glcd_Set_Font(dim byref const ActiveFont as ^byte, dim
FontWidth as byte, dim FontHeight as byte, dim FontOffs as word)

Returns

Nothing.
Sets font that will be used with Glcd_Write_Char and Glcd_Write_Text routines.
Parameters :

Description






activeFont: font to be set. Needs to be formatted as an array of char
aFontWidth: width of the font characters in dots.
aFontHeight: height of the font characters in dots.
aFontOffs: number that represents difference between the mikroBasic

PRO for PIC character set and regular ASCII set (eg. if 'A' is 65 in
ASCII character, and 'A' is 45 in the mikroBasic PRO for PIC character
set, aFontOffs is 20). Demo fonts supplied with the library have an offset
of 32, which means that they start with space.
The user can use fonts given in the file “__Lib_GLCDFonts.mpas” file located in
the Uses folder or create his own fonts.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Use the custom 5x7 font "myfont" which starts with space (32):
Glcd_Set_Font(myfont, 5, 7, 32)

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Glcd_Write_Char
Prototype

sub procedure Glcd_Write_Char(dim chr as byte, dim x_pos as byte,
dim page_num as byte, dim color as byte)

Returns

Nothing.
Prints character on the Glcd.
Parameters :



chr: character to be written
x_pos: character starting position on x-axis. Valid values: 0..(127-Font

Width)
Description



page_num: the number of the page on which character will be written.
Valid values: 0..7
 color: color parameter. Valid values: 0..2

The parameter color determines the color of the character: 0 white, 1 black,
and 2 inverts each dot.
Note: For x axis and page layout explanation see schematic at the bottom of
this page.

306

Requires

Glcd needs to be initialized, see Glcd_Init routine. Use Glcd_Set_Font to specify the font for display; if no font is specified, then default 5x8 font supplied with
the library will be used.

Example

' Write character 'C' on the position 10 inside the page 2:
Glcd_Write_Char('C', 10, 2, 1)

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Glcd_Write_Text
Prototype

sub procedure Glcd_Write_Text(dim byref text as string[20], dim
x_pos as byte, dim page_num as byte, dim color as byte)

Returns

Nothing.
Prints text on Glcd.
Parameters :

Description





text: text to be written
x_pos: text starting position on x-axis.
page_num: the number of the page on which text will be written. Valid values:



color: color parameter. Valid values: 0..2

0..7

The parameter color determines the color of the text: 0 white, 1 black, and 2
inverts each dot.
Note: For x axis and page layout explanation see schematic at the bottom of
this page.
Requires

Glcd needs to be initialized, see Glcd_Init routine. Use Glcd_Set_Font to specify the font for display; if no font is specified, then default 5x8 font supplied with
the library will be used.

Example

' Write text "Hello world!" on the position 10 inside the page 2:
Glcd_Write_Text("Hello world!", 10, 2, 1);

Glcd_Image
Prototype

sub procedure Glcd_Image(dim byref const image as ^byte)

Returns

Nothing.
Displays bitmap on Glcd.
Parameters :

Description

 image: image to be displayed. Bitmap array must be located in code

memory.
Use the mikroBasic PRO for PIC integrated Glcd Bitmap Editor to convert
image to a constant array suitable for displaying on Glcd.
Requires

Glcd needs to be initialized, see Glcd_Init routine.

Example

' Draw image my_image on Glcd
Glcd_Image(my_image)

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Library Example

The following example demonstrates routines of the Glcd library: initialization,
clear(pattern fill), image displaying, drawing lines, circles, boxes and rectangles, text
displaying and handling.
program Glcd_Test;
include bitmap
' Glcd module connections
dim GLCD_DataPort as byte at PORTD
dim GLCD_CS1
GLCD_CS2
GLCD_RS
GLCD_RW
GLCD_EN
GLCD_RST

as
as
as
as
as
as

sbit
sbit
sbit
sbit
sbit
sbit

at
at
at
at
at
at

RB0_bit
RB1_bit
RB2_bit
RB3_bit
RB4_bit
RB5_bit

dim GLCD_CS1_Direction as sbit
GLCD_CS2_Direction as sbit
GLCD_RS_Direction as sbit
GLCD_RW_Direction as sbit
GLCD_EN_Direction as sbit
GLCD_RST_Direction as sbit
' End Glcd module connections

at
at
at
at
at
at

TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit
TRISB4_bit
TRISB5_bit

dim counter as byte
someText as char[18]
sub procedure Delay2S()
Delay_ms(2000)
end sub
main:
ANSEL = 0
ANSELH = 0
Glcd_Init()
Glcd_Fill(0x00)
while TRUE
Glcd_Image(@truck_bmp)
Delay2S() delay2S()

308

' 2 seconds delay sub function

' Configure AN pins as digital I/O

' Initialize Glcd
' Clear Glcd

' Draw image

Glcd_Fill(0x00)

' Clear Glcd

Glcd_Box(62,40,124,63,1)

' Draw box

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Glcd_Rectangle(5,5,84,35,1)
Glcd_Line(0, 0, 127, 63, 1)
Delay2S()
counter = 5

Libraries
' Draw rectangle
' Draw line

while (counter <= 59)
' Draw horizontal and vertical lines
Delay_ms(250)
Glcd_V_Line(2, 54, counter, 1)
Glcd_H_Line(2, 120, counter, 1)
Counter = counter + 5
wend
Delay2S()
Glcd_Fill(0x00)
Glcd_Set_Font(@Character8x7, 8, 7, 32)
"Character8x7"
Glcd_Write_Text("mikroE", 1, 7, 2)
for counter = 1 to 10
Glcd_Circle(63,32, 3*counter, 1)
next counter
Delay2S()
Glcd_Box(10,20, 70,63, 2)
Delay2S()

' Clear Glcd
' Choose font
' Write string
' Draw circles

' Draw box}

Glcd_Fill(0xFF)
Glcd_Set_Font(@Character8x7, 8, 7, 32)
someText = "8x7 Font"
Glcd_Write_Text(someText, 5, 0, 2)
delay2S()

' Fill Glcd
' Change font

Glcd_Set_Font(@System3x6, 3, 5, 32)
someText = "3X5 CAPITALS ONLY"
Glcd_Write_Text(someText, 60, 2, 2)
delay2S()

' Change font

Glcd_Set_Font(@font5x7, 5, 7, 32)
someText = "5x7 Font"
Glcd_Write_Text(someText, 5, 4, 2)
delay2S()

' Change font

' Write string

' Write string

' Write string

Glcd_Set_Font(@FontSystem5x7_v2, 5, 7, 32) ' Change font
someText = "5x7 Font (v2)"
Glcd_Write_Text(someText, 5, 6, 2)
' Write string
delay2S()

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Glcd_Set_Font(@FontSystem5x7_v2, 5, 7, 32) ' Change font
someText = "5x7 Font (v2)"
Glcd_Write_Text(someText, 5, 6, 2)
' Write string
delay2S()
wend
end.

HW Connection

Glcd HW connection

310

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I²C LIBRARY
I2C full master MSSP module is available with a number of PIC MCU models. mikroBasic PRO
for PIC provides library which supports the master I2C mode.
Note: Some MCUs have multiple I2C modules. In order to use the desired I2C library routine, simply change the number 1 in the prototype with the appropriate module number, i.e.
I2C1_Init(100000)

Library Routines
 I2C1_Init
 I2C1_Start
 I2C1_Repeated_Start
 I2C1_Is_Idle
 I2C1_Rd
 I2C1_Wr
 I2C1_Stop
I2C1_Init
Prototype

sub procedure I2C1_Init(const clock as longint)

Returns

Nothing.

Description

Initializes I2C with desired clock (refer to device data sheet for correct values in
respect with Fosc). Needs to be called before using other functions of I2C
Library.
You don’t need to configure ports manually for using the module; library will take
care of the initialization.
Library requires MSSP module on PORTB or PORTC.

Requires

Example

Note: Calculation of the I2C clock value is carried out by the compiler, as it
would produce a relatively large code if performed on the libary level.
Therefore, compiler needs to know the value of the parameter in the compile
time. That is why this parameter needs to be a constant, and not a variable.
I2C1_Init(100000)

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I2C1_Start
Prototype

sub function I2C1_Start as byte

Returns

I2 there is no error, function returns 0.

Description Determines if I2C bus is free and issues START signal.
Requires

I2C must be configured before using this function. See I2C1_Init.

Example

if I2C1_Start = 0 then
...

I2C1_Repeated_Start
Prototype

sub procedure I2C1_Repeated_Start

Returns

Nothing.

Description Issues repeated START signal.
Requires

I2C must be configured before using this function. See I2C1_Init.

Example

I2C1_Repeated_Start

I2C1_Is_Idle
Prototype

sub function I2C1_Is_Idle as byte

Returns

Returns TRUE if I2C bus is free, otherwise returns FALSE.

Description Tests if I2C bus is free.

312

Requires

I2C must be configured before using this function. See I2C1_Init.

Example

if I2C1_Is_Idle then
...

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I2C1_Rd
Prototype

sub function I2C1_Rd(dim ack as byte) as byte

Returns

Returns one byte from the slave.

Description

Reads one byte from the slave, and sends not acknowledge signal if parameter
ack is 0, otherwise it sends acknowledge.
I2C must be configured before using this function. See I2C1_Init.

Requires

Example

Also, START signal needs to be issued in order to use this function. See
I2C1_Start.
Read data and send not acknowledge signal:
tmp = I2C1_Rd(0)

I2C1_Wr
Prototype

sub function I2C1_Wr(dim data as byte) as byte

Returns

Returns 0 if there were no errors.

Description Sends data byte (parameter data) via I2C bus.
Requires

I2C must be configured before using this function. See I2C1_Init.
Also, START signal needs to be issued in order to use this function. See
I2C1_Start.

Example

I2C1_Write($A3)

I2C1_Stop
Prototype

sub procedure I2C1_Stop

Returns

Nothing.

Description Issues STOP signal.
Requires

I2C must be configured before using this function. See I2C1_Init.

Example

I2C1_Stop

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Library Example

This code demonstrates use of I2C Library procedures and functions. PIC MCU is
connected (pins SCL and SDA) to 24c02 EEPROM. Program sends data to
EEPROM (data is written at address 2). Then, we read data via I2C from EEPROM
and send its value to PORTD, to check if the cycle was successful. The figure below
shows how to interface 24c02 to PIC.
program I2C_Simple
main:
ANSEL = 0
ANSELH = 0
PORTB = 0
TRISB = 0
I2C1_Init(100000)
I2C1_Start()
I2C1_Wr(0xA2)
I2C1_Wr(2)
I2C1_Wr(0xAA)
I2C1_Stop()

' Configure AN pins as digital I/O

' Configure PORTB as output
' initialize I2C communication
' issue I2C start signal
' send byte via I2C (device address + W)
' send byte (address of EEPROM location)
' send data (data to be written)
' issue I2C stop signal

Delay_100ms()
I2C1_Start()
I2C1_Wr(0xA2)
I2C1_Wr(2)
I2C1_Repeated_Start()
I2C1_Wr(0xA3)
PORTB = I2C1_Rd(0)
I2C1_Stop()

' issue I2C start signal
' send byte via I2C (device address + W)
' send byte (data address)
' issue I2C signal repeated start
' send byte (device address + R)
' Read the data (NO acknowledge)
' issue I2C stop signal

end.

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HW Connection

Interfacing 24c02 to PIC via I2C

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KEYPAD LIBRARY

The mikroBasic PRO for PIC provides a library for working with 4x4 keypad. The library routines
can also be used with 4x1, 4x2, or 4x3 keypad. For connections explanation see schematic at the
bottom of this page.

External dependencies of Keypad Library
The following variables
must be defined in all projects using Keypad Library:
dim keypadPort as byte
sfr external

Description:

Keypad Port

Example :
dim keypadPort as byte
at PORTD

Library Routines




Keypad_Init
Keypad_Key_Press
Keypad_Key_Click

Keypad_Init
Prototype

sub procedure Keypad_Init()

Returns

Nothing.

Description Initializes port for working with keypad.
Global variables :
Requires
 keypadPort - Keypad port must be defined before using this function.

Example

316

' Keypad module connections
dim keypadPort as byte at PORTD
' End of keypad module connections
...
Keypad_Init()

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Keypad_Key_Press
Prototype

sub function Keypad_Key_Press() as byte

The code of a pressed key (1..16).
Returns
If no key is pressed, returns 0.
Description Reads the key from keypad when key gets pressed.
Requires

Port needs to be initialized for working with the Keypad library, see Keypad_Init.

Example

dim kp as byte
...
kp = Keypad_Key_Press()

Keypad_Key_Click
Prototype

sub function Keypad_Key_Click() as byte

The code of a clicked key (1..16).
Returns
If no key is clicked, returns 0.
Call to Keypad_Key_Click is a blocking call: the function waits until some key
is pressed and released. When released, the function returns 1 to 16, dependDescription ing on the key. If more than one key is pressed simultaneously the function will
wait until all pressed keys are released. After that the function will return the
code of the first pressed key.
Requires

Port needs to be initialized for working with the Keypad library, see Keypad_Init.

Example

dim kp as byte
...
kp = Keypad_Key_Click()

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Library Example

This is a simple example of using the Keypad Library. It supports keypads with 1..4
rows and 1..4 columns. The code being returned by Keypad_Key_Click() function is
in range from 1..16. In this example, the code returned is transformed into ASCII
codes [0..9,A..F] and displayed on Lcd. In addition, a small single-byte counter displays in the second Lcd row number of key presses.
program Keypad_Test
dim kp, cnt, oldstate as byte
txt as byte[7]
' Keypad module connections
dim keypadPort as byte at PORTC
' End Keypad module connections
' Lcd module connections
dim LCD_RS as sbit at RB4_bit
LCD_EN as sbit at RB5_bit
LCD_D4 as sbit at RB0_bit
LCD_D5 as sbit at RB1_bit
LCD_D6 as sbit at RB2_bit
LCD_D7 as sbit at RB3_bit
LCD_RS_Direction as sbit
LCD_EN_Direction as sbit
LCD_D4_Direction as sbit
LCD_D5_Direction as sbit
LCD_D6_Direction as sbit
LCD_D7_Direction as sbit
' End Lcd module connections
main:
oldstate = 0
cnt = 0
Keypad_Init()
ANSEL = 0
ANSELH =
Lcd_Init()
Lcd_Cmd(_LCD_CLEAR)
Lcd_Cmd(_LCD_CURSOR_OFF)
Lcd_Out(1, 1, "Key :")
Lcd_Out(2, 1, "Times:")

at
at
at
at
at
at

TRISB4_bit
TRISB5_bit
TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit

' Reset counter
' Initialize Keypad
' Configure AN pins as digital I/O
'
'
'
'

Initialize Lcd
Clear display
Cursor off
Write message text on Lcd

while TRUE
kp = 0

' Reset key code variable

' Wait for key to be pressed and released
while ( kp = 0 )

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kp = Keypad_Key_Click()

' Store key code in kp vari-

able
wend
' Prepare value for output, transform key to it"s ASCII value
select case kp
'case 10: kp = 42
' "*"
' Uncomment this block for
keypad4x3
'case 11: kp = 48
' "0"
'case 12: kp = 35
' "#"
'default: kp += 48
case 1
kp = 49
keypad4x4
case 2
kp = 50
case 3
kp = 51
case 4
kp = 65
case 5
kp = 52
case 6
kp = 53
case 7
kp = 54
case 8
kp = 66
case 9
kp = 55
case 10
kp = 56
case 11
kp = 57
case 12
kp = 67
case 13
kp = 42
case 14
kp = 48
case 15
kp = 35
case 16
kp = 68

' 1

' Uncomment this block for

' 2
' 3
' A
' 4
' 5
' 6
' B
' 7
' 8
' 9
' C
' *
' 0
' #
' D

end select
if (kp <> oldstate) then
cnt = 1

‘Pressed key differs from previous

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oldstate = kp
else
Inc(cnt)
end if
Lcd_Chr(1, 10, kp)
if (cnt = 255) then
cnt = 0
Lcd_Out(2, 10, "
end if
WordToStr(cnt, txt)
Lcd_Out(2, 10, txt)

' Pressed key is same as previous

' Print key ASCII value on Lcd
' If counter varialble overflow
")

' Transform counter value to string
' Display counter value on Lcd

wend
end.

HW Connection

4x4 Keypad connection scheme

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LCD LIBRARY
The mikroBasic PRO for PIC provides a library for communication with Lcds (with
HD44780 compliant controllers) through the 4-bit interface. An example of Lcd connections is given on the schematic at the bottom of this page.
For creating a set of custom Lcd characters use Lcd Custom Character Tool.

External dependencies of LCD Library
The following variables
must be defined in all
projects using LCD
Library:

Description:

Example :

dim LCD_RS as sbit
sfr external

Register Select line.

dim LCD_RS as sbit at
RB4_bit

dim LCD_EN as sbit
sfr external

Enable line.

dim LCD_EN as sbit at
RB5_bit

dim LCD_D7 as sbit
sfr external

Data 7 line.

dim LCD_D7 as sbit at
RB3_bit

dim LCD_D6 as sbit
sfr external

Data 6 line.

dim LCD_D6 as sbit at
RB2_bit

dim LCD_D5 as sbit
sfr external

Data 5 line.

dim LCD_D5 as sbit at
RB1_bit

dim LCD_D4 as sbit
sfr external
dim LCD_RS_Direction
as sbit sfr external
dim LCD_EN_Direction
as sbit sfr external

Data 4 line.
Register Select direction
pin.
Enable direction pin.

dim LCD_D4 as sbit at
RB0_bit
dim LCD_RS_Direction
as sbit at TRISB4_bit
dim LCD_EN_Direction
as sbit at TRISB5_bit

dim LCD_D7_Direction
as sbit sfr external

Data 7 direction pin.

dim LCD_D7_Direction
as sbit at TRISB3_bit

dim LCD_D6_Direction
as sbit sfr external

Data 6 direction pin.

dim LCD_D6_Direction
as sbit at TRISB2_bit

dim LCD_D5_Direction Data 5 direction pin.
as sbit sfr externald

dim LCD_D5_Direction
as sbit at TRISB1_bit

dim LCD_D4_Direction
as sbit sfr external

dim LCD_D4_Direction
as sbit at TRISB0_bit

Data 4 direction pin.

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Library Routines







Lcd_Init
Lcd_Out
Lcd_Out_Cp
Lcd_Chr
Lcd_Chr_Cp
Lcd_Cmd

Lcd_Init
Prototype

sub procedure Lcd_Init()

Returns

Nothing.

Description Initializes Lcd module.

Requires














LCD_D7: Data bit 7
LCD_D6: Data bit 6
LCD_D5: Data bit 5
LCD_D4: Data bit 4
LCD_RS: Register Select (data/instruction) signal pin
LCD_EN: Enable signal pin
LCD_D7_Direction: Direction of the Data 7 pin
LCD_D6_Direction: Direction of the Data 6 pin
LCD_D5_Direction: Direction of the Data 5 pin
LCD_D4_Direction: Direction of the Data 4 pin
LCD_RS_Direction: Direction of the Register Select pin
LCD_EN_Direction: Direction of the Enable signal pin

must be defined before using this function.
‘Lcd module connections
dim
LCD_RS as sbit at RB4_bit
LCD_EN as sbit at RB5_bit
LCD_D7 as sbit at RB3_bit
LCD_D6 as sbit at RB2_bit
LCD_D5 as sbit at RB1_bit
LCD_D4 as sbit at RB0_bit

Example

322

dim
LCD_RS as sbit
LCD_EN as sbit
LCD_D7 as sbit
LCD_D6 as sbit
LCD_D5 as sbit
LCD_D4 as sbit
' End Lcd module
...
Lcd_Init()

at TRISB4_bit
at TRISB5_bit
at TRISB3_bit
at TRISB2_bit
at TRISB1_bit
at TRISB0_bit
connections

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Lcd_Out
Prototype

sub procedure Lcd_Out(dim row as byte, dim column as byte, dim
byref text as string[20])

Returns

Nothing.
Prints text on LCD starting from specified position. Both string variables and literals can be passed as a text.

Description

Parameters :
 row: starting position row number
 column: starting position column number
 text: text to be written

Requires

The LCD module needs to be initialized. See Lcd_Init routine.

Example

' Write text "Hello!" on Lcd starting from row 1, column 3:
Lcd_Out(1, 3, "Hello!")

Lcd_Out_Cp
Prototype

sub procedure Lcd_Out_Cp(dim byref text as string[19])

Returns

Nothing.
Prints text on LCD at current cursor position. Both string variables and literals
can be passed as a text.

Description
Parameters :
 text: text to be written
Requires

The LCD module needs to be initialized. See Lcd_Init routine.

Example

' Write text "Here!" at current cursor position:
Lcd_Out_Cp("Here!")

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Lcd_Chr
Prototype

sub procedure Lcd_Chr(dim row as byte, dim column as byte, dim
out_char as byte)

Returns

Nothing.
Prints character on LCD at specified position. Both variables and literals can be
passed as a character.

Description

Parameters :




row: writing position row number
column: writing position column number
out_char: character to be written

Requires

The LCD module needs to be initialized. See Lcd_Init routine.

Example

' Write character "i" at row 2, column 3:
Lcd_Chr(2, 3, 'i')

Lcd_Chr_Cp
Prototype

sub procedure Lcd_Chr_Cp(dim out_char as byte)

Returns

Nothing.
Prints character on LCD at current cursor position. Both variables and literals
can be passed as a character.

Description

Parameters :
 out_char: character to be written

324

Requires

The LCD module needs to be initialized. See Lcd_Init routine.

Example

' Write character "e" at current cursor position:
Lcd_Chr_Cp('e')

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Lcd_Cmd
Prototype

sub procedure Lcd_Cmd(dim out_char as byte)

Returns

Nothing.
Sends command to LCD.
Parameters :

Description

 out_char: command to be sent

Note: Predefined constants can be passed to the function, see Available LCD
Commands.
Requires

The LCD module needs to be initialized. See Lcd_Init table.

Example

' Clear Lcd display:
Lcd_Cmd(_LCD_CLEAR)

Available LCD Commands
Lcd Command

Purpose

LCD_FIRST_ROW

Move cursor to the 1st row

LCD_SECOND_ROW

Move cursor to the 2nd row

LCD_THIRD_ROW

Move cursor to the 3rd row

LCD_FOURTH_ROW

Move cursor to the 4th row

LCD_CLEAR

Clear display

LCD_RETURN_HOME

Return cursor to home position, returns a shifted display to its original
position. Display data RAM is unaffected.

LCD_CURSOR_OFF

Turn off cursor

LCD_UNDERLINE_ON

Underline cursor on

LCD_BLINK_CURSOR_ON

Blink cursor on

LCD_MOVE_CURSOR_LEFT

Move cursor left without changing display data RAM

LCD_MOVE_CURSOR_RIGHT

Move cursor right without changing display data RAM

LCD_TURN_ON

Turn LCD display on

LCD_TURN_OFF

Turn LCD display off

LCD_SHIFT_LEFT

Shift display left without changing display data RAM

LCD_SHIFT_RIGHT

Shift display right without changing display data RAM

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Library Example

The following code demonstrates usage of the LCD Library routines:
program Lcd
' Lcd module connections
dim LCD_RS as sbit at RB4_bit
LCD_EN as sbit at RB5_bit
LCD_D4 as sbit at RB0_bit
LCD_D5 as sbit at RB1_bit
LCD_D6 as sbit at RB2_bit
LCD_D7 as sbit at RB3_bit
LCD_RS_Direction as sbit
LCD_EN_Direction as sbit
LCD_D4_Direction as sbit
LCD_D5_Direction as sbit
LCD_D6_Direction as sbit
LCD_D7_Direction as sbit
' End Lcd module connections
dim txt1
txt2
txt3
txt4
i

as
as
as
as
as

char[16]
char[9]
char[8]
char[7]
byte

sub procedure Move_Delay()
Delay_ms(500)
end sub
main:
TRISB = 0
PORTB = 0xFF
TRISB = 0xFF
ANSEL = 0
ANSELH = 0
txt1
txt2
txt3
txt4

=
=
=
=

TRISB4_bit
TRISB5_bit
TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit

' Loop variable
' Function used for text moving
' You can change the moving speed here

' Configure AN pins as digital I/O

"mikroElektronika"
"EasyPIC5"
"Lcd4bit"
"example"

Lcd_Init()
Lcd_Cmd(_LCD_CLEAR)
Lcd_Cmd(_LCD_CURSOR_OFF)
Lcd_Out(1,6,txt3)
Lcd_Out(2,6,txt4)

326

at
at
at
at
at
at

' Initialize Lcd
' Clear display
' Cursor off
' Write text in first row
' Write text in second row

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Delay_ms(2000)
Lcd_Cmd(_LCD_CLEAR)
Lcd_Out(1,1,txt1)
Lcd_Out(2,5,txt2)
Delay_ms(500)
' Moving text
for i=0 to 3
Lcd_Cmd(_LCD_SHIFT_RIGHT)
Move_Delay()
next i
while TRUE
for i=0 to 7
Lcd_Cmd(_LCD_SHIFT_LEFT)
Move_Delay()
next i
for i=0 to 7
Lcd_Cmd(_LCD_SHIFT_RIGHT)
Move_Delay()
next i
wend
end.

Libraries
' Clear display
' Write text in first row
' Write text in second row

' Move text to the right 4 times

' Endless loop
' Move text to the left 8 times

' Move text to the right 8 times

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HW Connection

LCD HW connection

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MANCHESTER CODE LIBRARY
The mikroBasic PRO for PIC provides a library for handling Manchester coded signals. The Manchester code is a code in which data and clock signals are combined
to form a single self-synchronizing data stream; each encoded bit contains a transition at the midpoint of a bit period, the direction of transition determines whether the
bit is 0 or 1; the second half is the true bit value and the first half is the complement
of the true bit value (as shown in the figure below).

Notes: The Manchester receive routines are blocking calls (Man_Receive_Init and
Man_Synchro). This means that MCU will wait until the task has been performed
(e.g. byte is received, synchronization achieved, etc).
Note: Manchester code library implements time-based activities, so interrupts need
to be disabled when using it.

External dependencies of Manchester Code Library
The following variables
must be defined in all
projects using Manchester Code Library:

Description:

Example :

dim MANRXPIN as sbit
sfr external

Receive line.

dim MANRXPIN as sbit
at RC0_bit

dim MANTXPIN as sbit
sfr external

Transmit line.

dim MANTXPIN as sbit
at RC1_bit

dim MANRXPIN_Direction Direction of the Receive
as sbit sfr external pin.
dim MANTXPIN_Direction Direction of the Transmit
as sbit sfr external pin.

dim MANRXPIN_Direction
as sbit at TRISC0_bit
dim MANTXPIN_Direction
as sbit at TRISC1_bit

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Library Routines
 Man_Receive_Init
 Man_Receive
 Man_Send_Init
 Man_Send
 Man_Synchro
 Man_Out

The following routines are for the internal use by compiler only:




Manchester_0
Manchester_1
Manchester_Out

Man_Receive_Init
Prototype
Returns

sub function Man_Receive_Init()as word




0 - if initialization and synchronization were successful.
1 - upon unsuccessful synchronization.
255 - upon user abort.

The function configures Receiver pin and performs synchronization procedure in
order to retrieve baud rate out of the incoming signal.
Description
Note: In case of multiple persistent errors on reception, the user should call this
routine once again or Man_Synchro routine to enable synchronization.
Global variables :
Requires




MANRXPIN : Receive line
MANRXPIN_Direction : Direction of the receive pin

must be defined before using this function.

Example

330

' Initialize Receiver
dim MANRXPIN as sbit at RC0_bit
dim MANRXPIN_Direction as sbit at TRISC0_bit
...
Man_Receive_Init()

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Man_Receive
Prototype

sub function Man_Receive(dim byreferror as byte) as byte

Returns

A byte read from the incoming signal.
The function extracts one byte from incoming signal.

Description

Parameters :
 error: error flag. If signal format does not match the expected, the error flag
will be set to non-zero.

Requires

Example

To use this function, the user must prepare the MCU for receiving. See
Man_Receive_Init.
dim data, error as byte
...
data = 0
error = 0
data = Man_Receive(&error)
if (error <> 0) then
' error handling
end if

Man_Send_Init
Prototype

sub procedure Man_Send_Init()

Returns

Nothing.

Description The function configures Transmitter pin.
Global variables :
Requires

 MANRXPIN : Receive line
 MANRXPIN_Direction : Direction of the receive pin

must be defined before using this function

Example

' Initialize Transmitter:
dim MANTXPIN as sbit at PORTC1_bit
dim MANTXPIN_Direction as sbit at TRISC1_bit
...
Man_Send_Init()

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Man_Send
Prototype

sub procedure Man_Send(tr_data as byte)

Returns

Nothing.
Sends one byte.
Parameters :

Description
 tr_data: data to be sent

Note: Baud rate used is 500 bps.
Requires

To use this function, the user must prepare the MCU for sending. See
Man_Send_Init.

Example

dim msg as byte
...
Man_Send(msg)

Man_Synchro
Prototype

Returns

sub function Man_Synchro() as word
 0 - if synchronization was not successful.
 Half of the manchester bit length, given in multiples of 10us - upon

successful synchronization.
Description Measures half of the manchester bit length with 10us resolution.

332

Requires

To use this function, you must first prepare the MCU for receiving. See
Man_Receive_Init.

Example

dim man__half_bit_len as word
...
man__half_bit_len = Man_Synchro()

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Man_Break
Prototype

sub procedure Man_Break()

Returns

Nothing.

Description

Man_Receive is blocking routine and it can block the program flow. Call this
routine from interrupt to unblock the program execution. This mechanism is similar to WDT.
Note: Interrupts should be disabled before using Manchester routines again
(see note at the top of this page).

Requires

Nothing.
dim data1, error_, counter as byte
sub procedure interrupt()
if (INTCON.T0IF <> 0) then
if (counter >= 20) then
Man_Break()
counter = 0
' reset counter
end if
else
Inc(counter)
' increment counter
INTCON.T0IF = 0
' Clear Timer0 overflow interrupt flag
end if
end sub

Example

main:
counter = 0
OPTION_REG = 0x04

' TMR0 prescaler set to 1:32

...
Man_Receive_Init()
...
' try Man_Receive with blocking prevention mechanism
INTCON.GIE = 1
' Global interrupt enable
INTCON.T0IE = 1
' Enable Timer0 overflow interrupt
data1 = Man_Receive(error_)
INTCON.GIE = 0
' Global interrupt disable
end.

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Library Example

The following code is code for the Manchester receiver, it shows how to use the
Manchester Library for receiving data:
program Manchester_Receiver
' LCD module connections
dim LCD_RS as sbit at RB4_bit
LCD_EN as sbit at RB5_bit
LCD_D4 as sbit at RB0_bit
LCD_D5 as sbit at RB1_bit
LCD_D6 as sbit at RB2_bit
LCD_D7 as sbit at RB3_bit
LCD_RS_Direction as sbit
LCD_EN_Direction as sbit
LCD_D4_Direction as sbit
LCD_D5_Direction as sbit
LCD_D6_Direction as sbit
LCD_D7_Direction as sbit
' End LCD module connections

at
at
at
at
at
at

TRISB4_bit
TRISB5_bit
TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit

' Manchester module connections
dim MANRXPIN as sbit at RC0_bit
MANRXPIN_Direction as sbit at TRISC0_bit
MANTXPIN as sbit at RC1_bit
MANTXPIN_Direction as sbit at TRISC1_bit
' End Manchester module connections
dim error_flag, ErrorCount, temp as byte
main:
ErrorCount = 0
ANSEL = 0
ANSELH = 0
C1ON_bit = 0
C2ON_bit = 0
TRISC5_bit = 0
Lcd_Init()
Lcd_Cmd(_LCD_CLEAR)
Man_Receive_Init()

' Configure AN pins as digital I/O
' Disable comparators

' Initialize LCD
' Clear LCD display
' Initialize Receiver

while TRUE
' Endless loop
Lcd_Cmd(_LCD_FIRST_ROW)
' Move cursor to the 1st row
while TRUE
' Wait for the "start" byte
temp = Man_Receive(error_flag) ' Attempt byte receive

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if (temp = 0x0B) then
' "Start" byte, see Transmitter example
break
' We got the starting sequence
end if
if (error_flag <> 0) then ' Exit so we do not loop forever
break
end if
wend
do
temp = Man_Receive(error_flag)
' Attempt byte receive
if (error_flag <> 0) then
' If error occured
Lcd_Chr_CP("?")
' Write question mark on LCD
Inc(ErrorCount)
' Update error counter
if (ErrorCount > 20) then
' In case of multiple
errors
temp = Man_Synchro()
' Try to synchronize again
'Man_Receive_Init() ' Alternative, try to Initialize
Receiver again
ErrorCount = 0
'
end if
else
'
if (temp <> 0x0E) then
received(see Transmitter example)
Lcd_Chr_CP(temp)
'
byte on LCD
end if
Delay_ms(25)
end if
loop until ( temp = 0x0E )
wend
' If "End" byte was
end.

Reset error counter
No error occured
' If "End" byte was
do not write received

received exit do loop

The following code is code for the Manchester transmitter, it shows how to use the
Manchester Library for transmitting data:
program Manchester_Transmitter
' Manchester module connections
dim MANRXPIN as sbit at RC0_bit
MANRXPIN_Direction as sbit at TRISC0_bit
MANTXPIN as sbit at RC1_bit
MANTXPIN_Direction as sbit at TRISC1_bit
' End Manchester module connections
dim index, character as byte
s1 as char[17]
main:
s1 = "mikroElektronika"

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ANSEL =
ANSELH =
C1ON_bit
C2ON_bit

0
0
= 0
= 0

' Configure AN pins as digital I/O

Man_Send_Init()
while TRUE
Man_Send(0x0B)
Delay_ms(100)
character = s1[0]
index = 0
while (character <> 0)
Man_Send(character)
Delay_ms(90)
Inc(index)
character = s1[index]
wend
Man_Send(0x0E)
Delay_ms(1000)
wend

' Disable comparators

' Initialize transmitter
' Endless loop
' Send "start" byte
' Wait for a while
' Take first char from string
' Initialize index variable
' String ends with zero
' Send character
' Wait for a while
' Increment index variable
' Take next char from string
' Send "end" byte

end.

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Connection Example

Simple Transmitter connection

Simple Receiver connection

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MULTI MEDIA CARD LIBRARY

The Multi Media Card (MMC) is a flash memory card standard. MMC cards are currently available in sizes up to and including 1 GB, and are used in cell phones, mp3
players, digital cameras, and PDA’s.
mikroBasic PRO for PIC provides a library for accessing data on Multi Media Card
via SPI communication.This library also supports SD(Secure Digital) memory cards.

Secure Digital Card
Secure Digital (SD) is a flash memory card standard, based on the older Multi Media
Card (MMC) format.
SD cards are currently available in sizes of up to and including 2 GB, and are used
in cell phones, mp3 players, digital cameras, and PDAs.
Notes:
 Library works with PIC18 family only;
 The library uses the SPI module for communication. User must initialize SPI

module before using the SPI Graphic Lcd Library.
For MCUs with two SPI modules it is possible to initialize both of them and
then switch by using the SPI_Set_Active() routine.
 Routines for file handling can be used only with FAT16 file system.
 Library functions create and read files from the root directory only;
 Library functions populate both FAT1 and FAT2 tables when writing to files,
but the file data is being read from the FAT1 table only; i.e. there is no recov
ery if FAT1 table is corrupted.
Note: The SPI module has to be initialized through SPI1_Init_Advanced routine
with the following parameters:








SPI Master
8bit mode
primary prescaler 16
Slave Select disabled
data sampled in the middle of data output time
clock idle low
Serial output data changes on transition from idle clock state to active clock
state
SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV16,
_SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH)

_SPI_DATA_SAMPLE_MIDDLE,

must be called before initializing Mmc_Init.
Note: Once the MMC/SD card is initialized, the user can reinitialize SPI at higher
speed. See the Mmc_Init and Mmc_Fat_Init routines.

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External dependencies of MMC Library
The following variables must
be defined in all projects
using MMC Library:

Description:

Example :

dim Mmc_Chip_Select as
sbit sfr external

Chip select pin.

dim Mmc_Chip_Select as
sbit at RC2_bit

dim
Mmc_Chip_Select_Direction
as sbit sfr external

Direction of the
chip select pin.

dim
Mmc_Chip_Select_Directio
n as sbit at TRISC2_bit

Library Routines






Mmc_Init
Mmc_Read_Sector
Mmc_Write_Sector
Mmc_Read_Cid
Mmc_Read_Csd

Routines for file handling:














Mmc_Fat_Init
Mmc_Fat_QuickFormat
Mmc_Fat_Assign
Mmc_Fat_Reset
Mmc_Fat_Read
Mmc_Fat_Rewrite
Mmc_Fat_Append
Mmc_Fat_Delete
Mmc_Fat_Write
Mmc_Fat_Set_File_Date
Mmc_Fat_Get_File_Date
Mmc_Fat_Get_File_Size
Mmc_Fat_Get_Swap_File

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Mmc_Init
Prototype
Returns

sub function Mmc_Init() as byte



0 - if MMC/SD card was detected and successfully initialized
1 - otherwise

Initializes MMC through hardware SPI interface.
Description
Mmc_Init needs to be called before using other functions of this library.
Global variables :

Requires




Mmc_Chip_Select: Chip Select line
Mmc_Chip_Select_Direction: Direction of the Chip Select pin

must be defined before using this function.
The appropriate hardware SPI module must be previously initialized. See the
SPI1_Init, SPI1_Init_Advanced routines.
' MMC module connections
dim Mmc_Chip_Select as sbit sfr at RC2_bit
dim Mmc_Chip_Select_Direction as sbit sfr at TRISC2_bit
' MMC module connections

Example

dim error as byte
...
SPI1_Init()
error = Mmc_Init()

340

' Init with CS line at RB2

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Mmc_Read_Sector
Prototype
Returns

sub function Mmc_Read_Sector(dim sector as longint, dim byref
data as byte[512]) as byte



0 - i if reading was successful
1 - otherwise

The function reads one sector (512 bytes) from MMC card.
Description

Parameters:



Requires

sector: MMC/SD card sector to be read.
dbuff: buffer of minimum 512 bytes in length for data storage.

MMC/SD card must be initialized. See Mmc_Init.
' read sector 510 of the MMC/SD card
dim error as word
sectorNo as longword
dataBuffer as char[512]
...

Example

main:
...
sectorNo = 510
error = Mmc_Read_Sector(sectorNo, dataBuffer)
...
end.

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Mmc_Write_Sector
Prototype

Returns

sub function Mmc_Write_Sector(dim sector as longint, dim byref
data_ as byte[512]) as byte




0 - if writing was successful
1 -if there was an error in sending write command
2 - if there was an error in writing (data rejected)

The function writes 512 bytes of data to one MMC card sector.
Description

Parameters:



Requires

sector: MMC/SD card sector to be written to.
dbuff: data to be written (buffer of minimum 512 bytes in length).

MMC/SD card must be initialized. See Mmc_Init
' write to sector 510 of the MMC/SD card
dim error as word
sectorNo as longword
dataBuffer as char[512]
...

Example

342

main:
...
sectorNo = 510
error = Mmc_Write_Sector(sectorNo, dataBuffer)
...
end.

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Mmc_Read_Cid
Prototype
Returns

sub function Mmc_Read_Cid(dim byref data_cid as byte[16]) as byte



0 - if CID register was read successfully
1 -if there was an error while reading

The function reads 16-byte CID register.
Description

Parameters:


data_cid: buffer of minimum 16 bytes in length for storing CID register

content.
Requires

MMC/SD card must be initialized. See Mmc_Init

Example

dim error as word
dataBuffer as byte[16]
...
main:
...
error = Mmc_Read_Cid(dataBuffer)
...
end.

Mmc_Read_Csd
Prototype
Returns

sub function Mmc_Read_Csd(dim byref data_for_registers as
byte[16]) as byte



0 - if CSD register was read successfully
1- if there was an error while reading

The function reads 16-byte CSD register.
Description

Parameters:


data_csd:buffer of minimum 16 bytes in length for storing CSD register

content.
Requires

MMC/SD card must be initialized. See Mmc_Init

Example

dim error as word
dataBuffer as char[16]
...
main:
...
error = Mmc_Read_Csd(dataBuffer)
...
end.

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Mmc_Fat_Init
Prototype
Returns

Description

sub function Mmc_Fat_Init() as byte




0 - if MMC/SD card was detected and successfully initialized
1 - if FAT16 boot sector was not found
255 - if MMC/SD card was not detected

Initializes MMC/SD card, reads MMC/SD FAT16 boot sector and extracts necessary data needed by the library.
Note: MMC/SD card has to be formatted to FAT16 file system.
Global variables :



Mmc_Chip_Select: Chip Select line
Mmc_Chip_Select_Direction: Direction of the Chip Select pin

Requires
must be defined before using this function.
The appropriate hardware SPI module must be previously initialized. See the
SPI1_Init, SPI1_Init_Advanced routines.
' MMC module connections
dim Mmc_Chip_Select as sbit sfr at RC2_bit
dim Mmc_Chip_Select_Direction as sbit sfr at TRISC2_bit
' MMC module connections
' Initialize SPI1 module and set pointer(s) to SPI1 functions
SPI1_Init_Advanced(MASTER_OSC_DIV64, DATA_SAMPLE_MIDDLE,
CLK_IDLE_LOW, LOW_2_HIGH)

Example

'use fat16 quick format instead of init routine if a formatting
is needed
if (Mmc_Fat_Init() = 0) then
...
end if
' reinitialize SPI1 at higher speed
SPI1_Init_Advanced(MASTER_OSC_DIV4, DATA_SAMPLE_MIDDLE,
CLK_IDLE_LOW, LOW_2_HIGH)

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Mmc_Fat_QuickFormat
Prototype
Returns

sub function Mmc_Fat_QuickFormat(dim mmc_fat_label as string[11])
as byte




0 - if MMC/SD card was detected, successfully formated and initialized
1 - if FAT16 format was unseccessful
255 - if MMC/SD card was not detected

Formats to FAT16 and initializes MMC/SD card.
Parameters:


Description

mmc_fat_label: volume label (11 characters in length). If less than 11
characters are provided, the label will be padded with spaces. If null
string is passed volume will not be labeled

Note: This routine can be used instead or in conjunction with Mmc_Fat_Init
routine.
Note: If MMC/SD card already contains a valid boot sector, it will remain
unchanged (except volume label field) and only FAT and ROOT tables will be
erased. Also, the new volume label will be set.
Requires

The appropriate hardware SPI module must be previously initialized.
Initialize SPI1 module and set pointer(s) to SPI1 functions
SPI1_Init_Advanced(MASTER_OSC_DIV64, DATA_SAMPLE_MIDDLE,
CLK_IDLE_LOW, LOW_2_HIGH)

Example

' Format and initialize MMC/SD card and MMC_FAT16 library globals
if (Mmc_Fat_QuickFormat('mikroE') = 0) then
...
end if
' Reinitialize the SPI module at higher speed (change primary
prescaler).
SPI1_Init_Advanced(MASTER_OSC_DIV4, DATA_SAMPLE_MIDDLE,
CLK_IDLE_LOW, LOW_2_HIGH)

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Mmc_Fat_Assign
Prototype
Returns

sub function Mmc_Fat_Assign(dim byref filename as char[12], dim
file_cre_attr as byte) as byt



1 - if file already exists or file does not exist but a new file is created.
0 - if file does not exist and no new file is created.
Assigns file for file operations (read, write, delete...). All subsequent file operations will be applied on an assigned file.
Parameters:


filename: name of the file that should be assigned for file operations.

File name should be in DOS 8.3 (file_name.extension) format. The file
name and extension will be automatically padded with spaces by the
library if they have less than length required (i.e. "mikro.tx" -> "mikro .tx
"), so the user does no have to take care of that. The file name and
extension are case insensitive. The library will convert them to proper
case automatically, so the user does not have to take care of that.
Also, in order to keep backward compatibility with the first version of
this library, file names can be entered as UPPERCASE string of 11
bytes in length with no dot character between file name and extension
(i.e. "MIKROELETXT" -> MIKROELE.TXT). In this case last 3 charac
ters of the string are considered to be file extension.
 file_cre_attr: file creation and attributs flags. Each bit corresponds to
the appropriate file attribut:

Description

Bit

Mask

Description

0

0x01

Read Only

1

0x02

Hidden

2

0x04

System

3

0x08

Volume Label

4

0x10

Subdirectory

5

0x20

Archive

6

0x40

Device (internal use only, never found on disk)

7

0x80

File creation flag. If file does not exist and this flag is
set, a new file with specified name will be created.

Note: Long File Names (LFN) are not supported.

346

Requires

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init

Example

' create file with archive attribut if it does not already exist
Mmc_Fat_Assign("MIKRO007.TXT",0xA0)

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Mmc_Fat_Reset
Prototype

sub procedure Mmc_Fat_Reset(dim byref size as longword)

Returns

Nothing.
Opens currently assigned file for reading.

Description

Parameters:


size: buffer to store file size to. After file has been open for reading its
size is returned through this parameter.

Requires

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
The file must be previously assigned. See Mmc_Fat_Assign.

Example

dim size as longword
...
main:
...
Mmc_Fat_Reset(size)
...
end.

Mmc_Fat_Read
Prototype

sub procedure Mmc_Fat_Read(dim byref bdata as byte)

Returns

Nothing.
Reads a byte from the currently assigned file opened for reading. Upon function
execution file pointers will be set to the next character in the file.

Description

Parameters:


bdata: buffer to store read byte to. Upon this function execution read

byte is returned through this parameter.

Requires

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
The file must be previously assigned. See Mmc_Fat_Assign.
The file must be opened for reading. See Mmc_Fat_Reset.

Example

dim character as byte
...
main:
...
Mmc_Fat_Read(character)
...
end.

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Mmc_Fat_Rewrite
Prototype

sub procedure Mmc_Fat_Rewrite()

Returns

Nothing.

Description

Opens the currently assigned file for writing. If the file is not empty its content
will be erased.

Requires

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
The file must be previously assigned. See Mmc_Fat_Assign.

Example

' open file for writing
Mmc_Fat_Rewrite()

Mmc_Fat_Append
Prototype

sub procedure Mmc_Fat_Append()

Returns

Nothing.

Description

Opens the currently assigned file for appending. Upon this function execution
file pointers will be positioned after the last byte in the file, so any subsequent
file write operation will start from there.

Requires

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
The file must be previously assigned. See Mmc_Fat_Assign.

Example

348

' open file for appending
Mmc_Fat_Append()

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Mmc_Fat_Delete
Prototype

sub procedure Mmc_Fat_Delete()

Returns

Nothing.

Description

Deletes currently assigned file from MMC/SD card.

Requires

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
The file must be previously assigned. See Mmc_Fat_Assign

Example

' delete current file
Mmc_Fat_Delete()

Mmc_Fat_Write
Prototype

sub procedure Mmc_Fat_Write(dim byref fdata as byte[512], dim
data_len as word)

Returns

Nothing.
Writes requested number of bytes to the currently assigned file opened for writing.

Description

Parameters:
 fdata: data to be written.
 data_len: number of bytes to be written.

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
Requires

The file must be previously assigned. See Mmc_Fat_Assign.
The file must be opened for writing. See Mmc_Fat_Rewrite or
Mmc_Fat_Append.

Example

'dim file_contents as char[42]
...
main:
...
Mmc_Fat_Write(file_contents, 42) 'write data to the assigned
file
...
end.

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Mmc_Fat_Set_File_Date
Prototype

sub procedure Mmc_Fat_Set_File_Date(dim year as word, dim month,
day, hours, mins, seconds as byte)

Returns

Nothing.
Sets the date/time stamp. Any subsequent file write operation will write this
stamp to the currently assigned file's time/date attributs.
Parameters:

Description








year: year attribute. Valid values: 1980-2107
month: month attribute. Valid values: 1-12
day: day attribute. Valid values: 1-31
hours: hours attribute. Valid values: 0-23
mins: minutes attribute. Valid values: 0-59
seconds: seconds attribute. Valid values: 0-59

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
Requires

The file must be previously assigned. See Mmc_Fat_Assign.
The file must be opened for writing. See Mmc_Fat_Rewrite or
Mmc_Fat_Append.

Example

350

Mmc_Fat_Set_File_Date(2005,9,30,17,41,0)

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Mmc_Fat_Get_File_Date
Prototype

sub procedure Mmc_Fat_Get_File_Date(dim byref year as word, dim
byref month, day, hours, mins as byte)

Returns

Nothing.
Reads time/date attributes of the currently assigned file.
Parameters:


Description






Requires

year: buffer to store year attribute to. Upon function execution year attrib
ute is returned through this parameter.
month: buffer to store month attribute to. Upon function execution month
attribute is returned through this parameter.
day: buffer to store day attribute to. Upon function execution day attrib
ute is returned through this parameter.
hours: buffer to store hours attribute to. Upon function execution hours
attribute is returned through this parameter.
mins: buffer to store minutes attribute to. Upon function execution min
utes attribute is returned through this parameter.

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
The file must be previously assigned. See Mmc_Fat_Assign.

Example

dim year as word
month, day, hours, mins as byte
...
main:
...
Mmc_Fat_Get_File_Date(year, month, day, hours, mins)
...
end.

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Mmc_Fat_Get_File_Size
Prototype

sub function Mmc_Fat_Get_File_Size() as longword

Returns

Size of the currently assigned file in bytes.

Description

This function reads size of the currently assigned file in bytes.

Requires

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init.
The file must be previously assigned. See Mmc_Fat_Assign.

Example

dim my_file_size as longword
...
main:
...
my_file_size = Mmc_Fat_Get_File_Size
...
end.

Mmc_Fat_Get_Swap_File
Prototype

sub function Mmc_Fat_Get_Swap_File(dim sectors_cnt as longint,
dim byref filename as string[11], dim file_attr as byte) as dword


Returns

Number of the start sector for the newly created swap file, if there was
enough free space on the MMC/SD card to create file of required size.
 0 - otherwise.
This function is used to create a swap file of predefined name and size on the
MMC/SD media. If a file with specified name already exists on the media,
search for consecutive sectors will ignore sectors occupied by this file. Therefore, it is recommended to erase such file if it already exists before calling this
function. If it is not erased and there is still enough space for a new swap file,
this function will delete it after allocating new memory space for a new swap file.

Description

The purpose of the swap file is to make reading and writing to MMC/SD media as
fast as possible, by using the Mmc_Read_Sector() and Mmc_Write_Sector() functions directly, without potentially damaging the FAT system. The swap file can be considered as a "window" on the media where the user can freely write/read data. It's
main purpose in the mikroBasic PRO for PIC's library is to be used for fast data
acquisition; when the time-critical acquisition has finished, the data can be re-written
into a "normal" file, and formatted in the most suitable way.
Parameters:


sectors_cnt: number of consecutive sectors that user wants the swap

file to have.

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 filename: name of the file that should be assigned for file operations. File name

should be in DOS 8.3 (file_name.extension) format. The file name and extension will
be automatically padded with spaces by the library if they have less than length
required (i.e. "mikro.tx" -> "mikro .tx "), so the user does no have to take care of that.
The file name and extension are case insensitive. The library will convert them to proper case automatically, so the user does not have to take care of that.
Also, in order to keep backward compatibility with the first version of this library, file
names can be entered as UPPERCASE string of 11 bytes in length with no dot character between file name and extension (i.e. "MIKROELETXT" -> MIKROELE.TXT). In
this case last 3 characters of the string are considered to be file extension.



file_attr: file creation and attributs flags. Each bit corresponds to the
appropriate file attribut:

Description

Bit

Mask

Description

0

0x01

Read Only

1

0x02

Hidden

2

0x04

System

3

0x08

Volume Label

4

0x10

Subdirectory

5

0x20

Archive

6

0x40

Device (internal use only, never found on disk)

7

0x80

Not used

Note: Long File Names (LFN) are not supported.
Requires

MMC/SD card and MMC library must be initialized for file operations. See
Mmc_Fat_Init

Example

'-------------- Try to create a swap file with archive atribute,
whose size will be at least 1000 sectors.
'
If it succeeds, it sends No. of start sector
over UART
dim size as longword
...
main:
...
size = Mmc_Fat_Get_Swap_File(1000, "mikroE.txt", 0x20)
if size then
UART1_Write(0xAA)
UART1_Write(Lo(size))
UART1_Write(Hi(size))
UART1_Write(Higher(size))
UART1_Write(Highest(size))
UART1_Write(0xAA
end if
...
end.

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Library Example

The following example demonstrates MMC library test. Upon flashing, insert a
MMC/SD card into the module, when you should receive the "Init-OK" message.
Then, you can experiment with MMC read and write functions, and observe the
results through the Usart Terminal.
program MMC_Test
dim MMC_chip_select as sbit at RC2_bit
dim MMC_chip_select_direction as sbit at TRISC2_bit
const
dim
dim
dim

FILL_CHAR = "m"
i, SectorNo as word
mmc_error as byte
data_ok as bit

' Variables for MMC routines
SectorData as byte[512] ' Buffer for MMC sector reading/writing
data_for_registers as byte[16] ' buffer for CID and CSD registers
' UART write text and new line (carriage return + line feed)
sub procedure UART_Write_Line(dim byref uart_text as byte)
UART1_Write_Text(uart_text)
UART1_Write(13)
UART1_Write(10)
end sub
' Display byte in hex
sub procedure printhex(dim i as byte)
dim high, low as byte
high = i and 0xF0
high = high >> 4
high = high + "0"
if ( high > "9" ) then
high = high + 7
low = (i and 0x0F) + "0"
if ( low > "9" ) then
low = low + 7
end if

' High nibble

' Low nibble

UART1_Write(high)
UART1_Write(low)
end if
end sub

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ADCON1 = ADCON1 or 0x0F
CMCON = CMCON or 7

Libraries
' Configure AN pins as digital
' Turn off comparators

' Initialize UART1 module
UART1_Init(19200)
Delay_ms(10)
UART_Write_Line("PIC-Started") ' PIC present report
' Initialize SPI1 module
SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV64, _SPI_DATA_SAMPLE_MIDDLE,
_SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH)
' initialise a MMC card
mmc_error = Mmc_Init()
if ( mmc_error = 0 ) then
UART_Write_Line("MMC Init-OK")
' If MMC present report
else
UART_Write_Line("MMC Init-error") ' If error report
end if
' Fill MMC buffer with same characters
for i = 0 to 511
SectorData[i] = FILL_CHAR
next i
Write sector
mmc_error = Mmc_Write_Sector(SectorNo, SectorData)
if ( mmc_error = 0 ) then
UART_Write_Line("Write-OK")
else ' if there are errors.....
UART_Write_Line("Write-Error")
end if
' Reading of CID register
mmc_error = Mmc_Read_Cid(data_for_registers)
if ( mmc_error = 0 ) then
UART1_Write_Text("CID : ")
for i = 0 to 15
printhex(data_for_registers[i])
next i
UART_Write_Line(" ")
else
UART_Write_Line("CID-error")
end if

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' Reading of CSD register
mmc_error = Mmc_Read_Csd(data_for_registers)
if ( mmc_error = 0 ) then
UART1_Write_Text("CSD : ")
for i = 0 to 15
printhex(data_for_registers[i])
next i
UART_Write_Line(" ")
else
UART_Write_Line("CSD-error")
end if
' Read sector
mmc_error = Mmc_Read_Sector(SectorNo, SectorData)
if ( mmc_error = 0 ) then
UART_Write_Line("Read-OK")
else ' if there are errors.....
UART_Write_Line("Read-Error")
end if
' Chech data match
data_ok = 1
for i = 0 to 511
UART1_Write(SectorData[i])
if (SectorData[i] <> FILL_CHAR) then
data_ok = 0
break
end if
next i
if ( data_ok <> 0 ) then
UART_Write_Line("Content-OK")
else
UART_Write_Line("Content-Error")
end if
' Signal test end
UART_Write_Line("Test End.")
end.

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HW Connection

Pin diagram of MMC memory card

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ONEWIRE LIBRARY

The OneWire library provides routines for communication via the Dallas OneWire
protocol, for example with DS18x20 digital thermometer. OneWire is a Master/Slave
protocol, and all communication cabling required is a single wire. OneWire enabled
devices should have open collector drivers (with single pull-up resistor) on the
shared data line.
Slave devices on the OneWire bus can even get their power supply from data line.
For detailed schematic see device datasheet.
Some basic characteristics of this protocol are:






single master system,
low cost
low transfer rates (up to 16 kbps),
fairly long distances (up to 300 meters),
small data transfer packages.

Each OneWire device has also a unique 64-bit registration number (8-bit device
type, 48-bit serial number and 8-bit CRC), so multiple slaves can co-exist on the
same bus.
Note that oscillator frequency Fosc needs to be at least 4MHz in order to use the
routines with Dallas digital thermometers.
Note: This library implements time-based activities, so interrupts need to be disabled when using OneWire library.

Library Routines




358

Ow_Reset
Ow_Read
Ow_Write

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Ow_Reset
Prototype

sub function Ow_Reset(dim byref port as byte, pin as byte) as
byte

Returns

0 if DS1820 is present, and 1 if not present.

Description

Issues OneWire reset signal for DS1820. Parameters port and pin specify the
location of DS1820.

Requires

Works with Dallas DS1820 temperature sensor only.

Example

To reset the DS1820 that is connected to the RA5 pin:
Ow_Reset(PORTA, 5)

Ow_Read
Prototype

sub function Ow_Read(dim byref port as byte, dim pin as byte) as
byte

Returns

Data read from an external device over the OneWire bus.

Description Reads one byte of data via the OneWire bus.
Requires

Works with Dallas DS1820 temperature sensor only.

Example

tmp = Ow_Read(PORTA, 5)

Ow_Write
Prototype

sub procedure Ow_Write(dim byref port as byte, dim pin, par as
byte)

Returns

Nothing.

Description Writes one byte of data (argument par) via OneWire bus.
Requires

Works with Dallas DS1820 temperature sensor only.

Example

Ow_Write(PORTA, 5, $CC)

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Library Example

This example reads the temperature using DS18x20 connected to pin PORTA.B5.
After reset, MCU obtains temperature from the sensor and prints it on the Lcd. Make
sure to pull-up PORTA.B5 line and to turn off the PORTA LEDs.
program OneWire
' Lcd module connections
dim LCD_RS as sbit at RB4_bit
LCD_EN as sbit at RB5_bit
LCD_D4 as sbit at RB0_bit
LCD_D5 as sbit at RB1_bit
LCD_D6 as sbit at RB2_bit
LCD_D7 as sbit at RB3_bit
LCD_RS_Direction as sbit at
LCD_EN_Direction as sbit at
LCD_D4_Direction as sbit at
LCD_D5_Direction as sbit at
LCD_D6_Direction as sbit at
LCD_D7_Direction as sbit at
' End Lcd module connections

TRISB4_bit
TRISB5_bit
TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit

'
Set TEMP_RESOLUTION to the corresponding resolution
DS18x20 sensor:
' 18S20: 9 (default setting can be 9,10,11,or 12)
' 18B20: 12
const TEMP_RESOLUTION as byte = 9

of

used

dim text as byte[9]
temp as word
sub procedure Display_Temperature( dim temp2write as word )
const RES_SHIFT = TEMP_RESOLUTION - 8
dim temp_whole as byte
temp_fraction as word
text = "000.0000"
' check if temperature is negative
if (temp2write and 0x8000) then
text[0] = "-"
temp2write = not temp2write + 1
end if
' extract temp_whole
temp_whole = word(temp2write >> RES_SHIFT)
' convert temp_whole to characters
if ( temp_whole div 100 ) then

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text[0] = temp_whole div 100
else
text[0] = "0"
end if

+ 48

text[1] = (temp_whole div 10)mod 10 + 48
text[2] = temp_whole mod 10 + 48

' Extract tens digit
' Extract ones digit

' extract temp_fraction and convert it to unsigned int
temp_fraction = word(temp2write << (4-RES_SHIFT))
temp_fraction = temp_fraction and 0x000F
temp_fraction = temp_fraction * 625
' convert temp_fraction to characters
text[4] = word(temp_fraction div 1000)
+ 48 ' Extract
thousands digit
text[5] = word((temp_fraction div 100)mod 10 + 48) ' Extract hundreds digit
text[6] = word((temp_fraction div 10)mod 10 + 48) ' Extract tens
digit
text[7] = word(temp_fraction mod 10)
+ 48
' Extract ones
digit
' print temperature on Lcd
Lcd_Out(2, 5, text)
end sub
main:
ANSEL = 0
ANSELH = 0

' Configure AN pins as digital I/O

text = "000.0000"
Lcd_Init()
Lcd_Cmd(_LCD_CLEAR)
Lcd_Cmd(_LCD_CURSOR_OFF)
Lcd_Out(1, 1, " Temperature:
Lcd_Chr(2,13,178)
code for degree
Lcd_Chr(2,14,"C")
178 instead of 223

' Initialize Lcd
' Clear Lcd
' Turn cursor off
")

' Print degree character, "C" for Centigrades
' different Lcd displays have different char
' if you see greek alpha letter try typing

'--- main loop
while (TRUE)
'--- perform temperature reading
Ow_Reset(PORTE, 2)
' Onewire reset signal
Ow_Write(PORTE, 2, 0xCC)
' Issue command SKIP_ROM
Ow_Write(PORTE, 2, 0x44)
' Issue command CONVERT_T
Delay_us(120)

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Ow_Reset(PORTE, 2)
Ow_Write(PORTE, 2, 0xCC)
Ow_Write(PORTE, 2, 0xBE)

' Issue command SKIP_ROM
' Issue command READ_SCRATCHPAD

temp = Ow_Read(PORTE, 2)
temp = (Ow_Read(PORTE, 2) << 8) + temp
'--- Format and display result on Lcd
Display_Temperature(temp)
Delay_ms(520)
wend
end.

HW Connection

Example of DS1820 connection

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PORT EXPANDER LIBRARY
The mikroBasic PRO for PIC provides a library for communication with the
Microchip’s Port Expander MCP23S17 via SPI interface. Connections of the PIC
compliant MCU and MCP23S17 is given on the schematic at the bottom of this
page.
Note: Library uses the SPI module for communication. The user must initialize SPI
module before using the Port Expander Library.
Note: Library does not use Port Expander interrupts.

External dependencies of Port Expander Library
The following variables must
be defined in all projects
using Port Expander Library:

Description:

Example :

dim SPExpanderRST as sbit
Reset line.
sfr external;

dim SPExpanderRST as
sbit at RC0_bit

dim SPExpanderCS as sbit
sfr external

Chip Select line.

dim SPExpanderCS as
sbit at RC1_bit

dim
SPExpanderRST_Direction
as sbit sfr external

Direction of the
Reset pin.

dim
SPExpanderRST_Directio
n as sbit at
TRISC0_bit

dim
SPExpanderCS_Direction as
sbit sfr external

Direction of the
Chip Select pin.

dim
SPExpanderCS_Direction
s as sbit at
TRISC1_bit

Library Routine
















Expander_Init
Expander_Read_Byte
Expander_Write_Byte
Expander_Read_PortA
Expander_Read_PortB
Expander_Read_PortAB
Expander_Write_PortA
Expander_Write_PortB
Expander_Write_PortAB
Expander_Set_DirectionPortA
Expander_Set_DirectionPortB
Expander_Set_DirectionPortAB
Expander_Set_PullUpsPortA
Expander_Set_PullUpsPortB
Expander_Set_PullUpsPortAB

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Expander_Init
Prototype

sub procedure Expander_Init(dim ModuleAddress as byte)

Returns

Nothing.
Initializes Port Expander using SPI communication.
Port Expander module settings :

Description






hardware addressing enabled
automatic address pointer incrementing disabled (byte mode)
BANK_0 register adressing
slew rate enabled

Parameters :


ModuleAddress: Port Expander hardware address, see schematic at
the bottom of this page

Global variables :

Requires






SPExpanderCS: Chip Select line
SPExpanderRST: Reset line
SPExpanderCS_Direction: Direction of the Chip Select pin
SPExpanderRST_Direction: Direction of the Reset pin

must be defined before using this function.
SPI module needs to be initialized. See SPI1_Init and SPI1_Init_Advanced routines.

Example

' port expander pinout definition
dim SPExpanderCS as sbit at RC1_bit
SPExpanderRST as sbit at RC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
...
SPI1_Init()
Expander_Init(0)

364

' initialize SPI module
' initialize port expander

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Expander_Read_Byte
Prototype

sub function Expander_Read_Byte(dim ModuleAddress as byte, dim
RegAddress as byte) as byte

Returns

Byte read.
The function reads byte from Port Expander.

Description

Parameters :


ModuleAddress: Port Expander hardware address, see schematic at the



RegAddress: Port Expander's internal register address

bottom of this page
Requires

Port Expander must be initialized. See Expander_Init.

Example

' Read a byte from Port Expander's register
dim read_data as byte
...
read_data = Expander_Read_Byte(0,1)

Expander_Write_Byte
Prototype

sub procedure Expander_Write_Byte(dim ModuleAddress as byte, dim
RegAddress as byte, dim Data_ as byte)

Returns

Nothing.
Routine writes a byte to Port Expander.
Parameters :

Description



ModuleAddress: Port Expander hardware address, see schematic at the




RegAddress: Port Expander's internal register address
Data_: data to be written

bottom of this page

Requires

Port Expander must be initialized. See Expander_Init.

Example

' Write a byte to the Port Expander's register
Expander_Write_Byte(0,1,0xFF)

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Expander_Read_PortA
Prototype

sub function Expander_Read_PortA(dim ModuleAddress as byte) as
byte

Returns

Byte read.

The function reads byte from Port Expander's PortA.
Parameters :
Description
 ModuleAddress: Port Expander hardware address, see schematic at the
bottom of this page
Port Expander must be initialized. See Expander_Init.
Requires

Example

Port Expander's PortA should be configured as input. See Expander_Set_DirectionPortA and Expander_Set_DirectionPortAB routines.
' Read a byte from Port Expander's PORTA
dim read_data as byte
...
Expander_Set_DirectionPortA(0,0xFF) 'set expander's porta to be
input
...
read_data = Expander_Read_PortA(0)

Expander_Read_PortB
Prototype

sub function Expander_Read_PortB(dim ModuleAddress as byte) as
byte

Returns

Byte read.

The function reads byte from Port Expander's PortB.
Parameters :
Description
 ModuleAddress: Port Expander hardware address, see schematic at
the bottom of this page
Port Expander must be initialized. See Expander_Init.
Requires

Example

366

Port Expander's PortB should be configured as input. See Expander_Set_DirectionPortB and Expander_Set_DirectionPortAB routines.
' Read a byte from Port Expander's PORTB
dim read_data as byte
...
Expander_Set_DirectionPortB(0,0xFF)
to be input
...
read_data = Expander_Read_PortB(0)

' set expander's portb

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Expander_Read_PortAB
Prototype

sub function Expander_Read_PortAB(dim ModuleAddress as byte) as
word

Returns

Word read.

The function reads word from Port Expander's ports. PortA readings are in the
higher byte of the result. PortB readings are in the lower byte of the result.
Description Parameters :
 ModuleAddress: Port Expander hardware address, see schematic at the
bottom of this page
Port Expander must be initialized. See Expander_Init.
Requires

Example

Port Expander's PortA and PortB should be configured as inputs. See
Expander_Set_DirectionPortA, Expander_Set_DirectionPortB and
Expander_Set_DirectionPortAB routines.
' Read a byte from Port Expander's PORTA and PORTB
dim read_data as word
...
Expander_Set_DirectionPortAB(0,0xFFFF) ' set expander's porta
and portb to be input
...
read_data = Expander_Read_PortAB(0)

Expander_Write_PortA
Prototype

sub procedure Expander_Write_PortA(dim ModuleAddress as byte, dim
Data_ as byte)

Returns

Nothing.

The function writes byte to Port Expander's PortA.
Parameters :
Description
 ModuleAddress: Port Expander hardware address, see schematic at the
bottom of this page
 Data_: data to be written
Port Expander must be initialized. See Expander_Init.
Requires

Port Expander's PortA should be configured as output. See
Expander_Set_DirectionPortA and Expander_Set_DirectionPortAB routines.
' Write a byte to Port Expander's PORTA

Example

...
Expander_Set_DirectionPortA(0,0x00)
output
...
Expander_Write_PortA(0, 0xAA)

' set expander's porta to be

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Expander_Write_PortB
Prototype

sub procedure Expander_Write_PortB(dim ModuleAddress as byte, dim
Data_ as byte)

Returns

Nothing.

The function writes byte to Port Expander's PortB.
Parameters :
Description
 ModuleAddress: Port Expander hardware address, see schematic at
the bottom of this page
 Data_: data to be written
Port Expander must be initialized. See Expander_Init.
Requires

Port Expander's PortB should be configured as output. See
Expander_Set_DirectionPortB and Expander_Set_DirectionPortAB routines.
' Write a byte to Port Expander's PORT

Example

...
Expander_Set_DirectionPortB(0,0x00)
output
...
Expander_Write_PortB(0, 0x55)

' set expander's portb to be

Expander_Write_PortAB
Prototype

sub procedure Expander_Write_PortAB(dim ModuleAddress as byte, dim
Data_ as word)

Returns

Nothing.

The function writes word to Port Expander's ports.
Parameters :
 ModuleAddress: Port Expander hardware address, see schematic at the
Description
bottom of this page
 Data_: data to be written. Data to be written to PortA are passed in
Data's higher byte. Data to be written to PortB are passed in Data's
lower byte
Requires

Port Expander must be initialized. See Expander_Init.
Port Expander's PortA and PortB should be configured as outputs. See
Expander_Set_DirectionPortA, Expander_Set_DirectionPortB and
Expander_Set_DirectionPortAB routines.
' Write a byte to Port Expander's PORTA and PORTB

Example

368

...
Expander_Set_DirectionPortAB(0,0x0000)
and portb to be output
...
Expander_Write_PortAB(0, 0xAA55)

' set expander's porta

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Expander_Set_DirectionPortA
Prototype

sub procedure Expander_Set_DirectionPortA(dim ModuleAddress as
byte, dim Data_ as byte)

Returns

Nothing.

The function sets Port Expander's PortA direction.
Parameters :
 ModuleAddress: Port Expander hardware address, see schematic at the
bottom of this page
Description
 Data_: data to be written to the PortA direction register. Each bit corre
sponds to the appropriate pin of the PortA register. Set bit designates cor
responding pin as input. Cleared bit designates corresponding pin as out
put.
Requires

Port Expander must be initialized. See Expander_Init.

Example

' Set Port Expander's PORTA to be output
Expander_Set_DirectionPortA(0,0x00)

Expander_Set_DirectionPortB
Prototype

sub procedure Expander_Set_DirectionPortB(dim ModuleAddress as
byte, dim Data_ as byte)

Returns

Nothing.

The function sets Port Expander's PortB direction.
Parameters :
 ModuleAddress: Port Expander hardware address, see schematic at the
bottom of this page
Description
 Data_: data to be written to the PortB direction register. Each bit corre
sponds to the appropriate pin of the PortB register. Set bit designates cor
responding pin as input. Cleared bit designates corresponding pin as out
put.
Requires

Port Expander must be initialized. See Expander_Init.

Example

' Set Port Expander's PORTB to be input
Expander_Set_DirectionPortB(0,0xFF)

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Expander_Set_DirectionPortAB
Prototype

sub procedure Expander_Set_DirectionPortAB(dim ModuleAddress as
byte, dim Direction as word)

Returns

Nothing.
The function sets Port Expander's PortA and PortB direction.
Parameters :


Description

ModuleAddress: Port Expander hardware address, see schematic at the
bottom of this page
 Direction: data to be written to direction registers. Data to be written to
the PortA direction register are passed in Direction's higher byte. Data
to be written to the PortB direction register are passed in Direction's
lower byte. Each bit corresponds to the appropriate pin of the
PortA/PortB register. Set bit designates corresponding pin as input.
Cleared bit designates corresponding pin as output.

Requires

Port Expander must be initialized. See Expander_Init.

Example

' Set Port Expander's PORTA to be output and PORTB to be input
Expander_Set_DirectionPortAB(0,0x00FF)

Expander_Set_PullUpsPortA
Prototype

sub procedure Expander_Set_PullUpsPortA(dim ModuleAddress as
byte, dim Data_ as byte)

Returns

Nothing.
The function sets Port Expander's PortA pull up/down resistors.
Parameters :

Description

370



ModuleAddress: Port Expander hardware address, see schematic at the
bottom of this page
 Data_: data for choosing pull up/down resistors configuration. Each
bit corresponds to the appropriate pin of the PortA register. Set bit
enables pull-up for corresponding pin.

Requires

Port Expander must be initialized. See Expander_Init.

Example

' Set Port Expander's PORTA pull-up resistors
Expander_Set_PullUpsPortA(0, 0xFF)

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Expander_Set_PullUpsPortB
Prototype

sub procedure Expander_Set_PullUpsPortB(dim ModuleAddress as
byte, dim Data_ as byte)

Returns

Nothing.
The function sets Port Expander's PortB pull up/down resistors.
Parameters :

Description



ModuleAddress: Port Expander hardware address, see schematic at the



Data_: data for choosing pull up/down resistors configuration. Each bit

bottom of this page
corresponds to the appropriate pin of the PortB register. Set bit enables
pull-up for corresponding pin.
Requires

Port Expander must be initialized. See Expander_Init.

Example

‘Set Port Expander's PORTB pull-up resistors
Expander_Set_PullUpsPortB(0, 0xFF)

Expander_Set_PullUpsPortAB
Prototype

sub procedure Expander_Set_PullUpsPortAB(dim ModuleAddress as
byte, dim PullUps as word)

Returns

Nothing.
The function sets Port Expander's PortA and PortB pull up/down resistors.
Parameters :


Description

ModuleAddress: Port Expander hardware address, see schematic at the
bottom of this page
 PullUps: data for choosing pull up/down resistors configuration. PortA pull
up/down resistors configuration is passed in PullUps's higher byte. PortB
pull up/down resistors configuration is passed in PullUps's lower byte.
Each bit corresponds to the appropriate pin of the PortA/PortB register.
Set bit enables pull-up for corresponding pin.

Requires

Port Expander must be initialized. See Expander_Init.

Example

' Set Port Expander's PORTA and PORTB pull-up resistors
Expander_Set_PullUpsPortAB(0, 0xFFFF)

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Library Example

The example demonstrates how to communicate with Port Expander MCP23S17.
Note that Port Expander pins A2 A1 A0 are connected to GND so Port Expander
Hardware Address is 0.
program PortExpander
' Port Expander module connections
dim SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' End Port Expander module connections
dim counter as byte' = 0
main:
counter = 0
ANSEL = 0
ANSELH = 0
TRISB = 0
PORTB = 0

' Configure AN pins as digital I/O
' Set PORTB as output

SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV4, _SPI_DATA_SAMPLE_MIDDLE,
_SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH)
Expander_Init(0)
' Initialize Port Expander
Expander_Set_DirectionPortA(0, 0x00) ' Set Expander's PORTA to be
output
Expander_Set_DirectionPortB(0,0xFF) ' Set Expander's PORTB to be
input
Expander_Set_PullUpsPortB(0,0xFF)
' Set pull-ups to all of the
Expander's PORTB pins
while TRUE
Expander_Write_PortA(0, counter)
Inc(counter)
PORTB = Expander_Read_PortB(0)
write it to LEDs
Delay_ms(100)
wend

' Endless loop
' Write i to expander's PORTA
' Read expander's PORTB and

end.

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Port Expander HW connection

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PS/2 LIBRARY

The mikroBasic PRO for PIC provides a library for communication with the common
PS/2 keyboard.
Note: The library does not utilize interrupts for data retrieval, and requires the oscillator clock to be at least 6MHz.
Note: The pins to which a PS/2 keyboard is attached should be connected to the
pull-up resistors.
Note: Although PS/2 is a two-way communication bus, this library does not provide
MCU-to-keyboard communication; e.g. pressing the Caps Lock key will not turn on
the Caps Lock LED.

External dependencies of PS/2 Library
The following variables
must be defined in all
projects using PS/2
Library:

Description:

Example :

dim PS2_Data as sbit
sfr external

PS/2 Data line.

dim PS2_Data as sbit
at RC0_bit

dim PS2_Clock as sbit
sfr external

PS/2 Clock line.

dim PS2_Clock as
sbit at RC1_bit

dim PS2_Data_Direction
as sbit sfr external

Direction of the PS/2 Data dim
PS2_Data_Direction as
pin.
sbit at TRISC0_bit

Direction of the PS/2
dim PS2_Clock_Direction Clock pin.
as sbit sfr external

dim
PS2_Clock_Direction
as sbit at TRISC1_bit

Library Routines



374

Ps2_Config
Ps2_Key_Read

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Ps2_Config
Prototype

sub procedure Ps2_Config()

Returns

Nothing.

Description Initializes the MCU for work with the PS/2 keyboard.
Global variables :

Requires






PS2_Data: Data signal line
PS2_Clock: Clock signal line in
PS2_Data_Direction: Direction of the Data pin
PS2_Clock_Direction: Direction of the Clock pin

must be defined before using this function.

Example

' PS2 pinout definition
dim PS2_Data as sbit at RC0_bit
dim PS2_Clock as sbit at RC1_bit
dim PS2_Data_Direction as sbit at TRISC0_bit
dim PS2_Clock_Direction as sbit at TRISC1_bit
' End of PS2 pinout definition
...
Ps2_Config()
' Init PS/2 Keyboard

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Ps2_Key_Read
Prototype
Returns

sub function Ps2_Key_Read(dim byref value as byte, dim byref special as byte, dim byref pressed as byte) as byte



1 if reading of a key from the keyboard was successful
0 if no key was pressed

The function retrieves information on key pressed.
Parameters :


Description

376

value: holds the value of the key pressed. For characters, numerals,
punctuation marks, and space value will store the appropriate ASCII
code. Routine “recognizes” the function of Shift and Caps Lock, and
behaves appropriately. For special function keys see Special Function
Keys Table.
 special: is a flag for special function keys (F1, Enter, Esc, etc). If key
pressed is one of these, special will be set to 1, otherwise 0.
 pressed: is set to 1 if the key is pressed, and 0 if it is released.

Requires

PS/2 keyboard needs to be initialized. See Ps2_Config routine.

Example

dim value, special, pressed as byte
...
do {
if (Ps2_Key_Read(value, special, pressed)) then
if ((value = 13) and (special = 1)) then
break
end if
end if
loop until (0=1)

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Special Function Keys
Key

Value returned

Num Lock

29

F1

1

Left Arrow

30

F2

2

Right Arrow

31

F3

3

Up Arrow

32

F4

4

Down Arrow

33

F5

5

Escape

34

F6

6

Tab

35

F7

7

F8

8

F9

9

F10

10

F11

11

F12

12

Enter

13

Page Up

14

Page Down

15

Backspace

16

Insert

17

Delete

18

Windows

19

Ctrl

20

Shift

21

Alt

22

Print Screen

23

Pause

24

Caps Lock

25

End

26

Home

27

Scroll Lock

28

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Library Example

This simple example reads values of the pressed keys on the PS/2 keyboard and
sends them via UART.
program PS2_Example
dim keydata, special, down as byte
dim PS2_Data
PS2_Clock

as sbit at PORTC.0
as sbit at PORTC.1

PS2_Data_Direction as sbit at TRISC.0
PS2_Clock_Direction as sbit at TRISC.1

main:
ANSEL = 0
ANSELH = 0
UART1_Init(19200)
Ps2_Config()
Delay_ms(100)
UART1_Write_Text("Ready")

' Configure AN pins as digital I/O

'
'
'
'

Initialize UART module at 9600 bps
Init PS/2 Keyboard
Wait for keyboard to finish
Ready

while TRUE
' Endless loop
if Ps2_Key_Read(keydata, special, down) then ' If data was read
from PS/2
if (down <> 0) and (keydata = 16) then
' Backspace read
UART1_Write(0x08)
' Send Backspace to
usart terminal
else
if (down <> 0) and (keydata = 13) then ' Enter read
UART1_Write(10)
' Send carriage return to
usart terminal
UART1_Write(13)
' Uncomment this line if
usart terminal also expects line feed
' for new line transition
else
if (down <> 0) and (special = 0) and (keydata <> 0) then
' Common key read
UART1_Write(keydata)
' Send key to usart terminal
end if
end if
end if
end if
Delay_ms(10)
' Debounce period
wend
end.

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Example of PS2 keyboard connection

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PWM LIBRARY

CCP module is available with a number of PIC MCUs. mikroBasic PRO for PIC provides library
which simplifies using PWM HW Module.
Note: Some MCUs have multiple CCP modules. In order to use the desired CCP library routine,
simply change the number 1 in the prototype with the appropriate module number, i.e.
PWM2_Start()

Library Routines





PWM1_Init
PWM1_Set_Duty
PWM1_Start
PWM1_Stop

PWM1_Init
Prototype

sub procedure PWM1_Init(dim freq as longint)

Returns

Nothing.

Initializes the PWM module with duty ratio 0. Parameter freq is a desired PWM
frequency in Hz (refer to device data sheet for correct values in respect with
Description Fosc).
This routine needs to be called before using other functions from PWM Library.
MCU must have CCP module.
Requires

Note: Calculation of the PWM frequency value is carried out by the compiler, as
it would produce a relatively large code if performed on the libary level.
Therefore, compiler needs to know the value of the parameter in the compile
time. That is why this parameter needs to be a constant, and not a variable.
Initialize PWM module at 5KHz:

Example
PWM1_Init(5000)

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PWM1_Set_Duty
Prototype

sub procedure PWM1_Set_Duty(dim duty_ratio as byte)

Returns

Nothing.

Sets PWM duty ratio. Parameter duty takes values from 0 to 255, where 0 is
Description 0%, 127 is 50%, and 255 is 100% duty ratio. Other specific values for duty ratio
can be calculated as (Percent*255)/100.
Requires

MCU must have CCP module. PWM1_Init must be called before using this routine.
Set duty ratio to 75%:

Example
PWM1_Set_Duty(192)

PWM1_Start
Prototype

sub procedure PWM1_Star

Returns

Nothing.

Description Starts PWM.
Requires

MCU must have CCP module. PWM1_Init must be called before using this routine.

Example

PWM1_Start

PWM1_Stop
Prototype

sub procedure PWM1_Stop

Returns

Nothing.

Description Stops PWM.
Requires

MCU must have CCP module. PWM1_Init must be called before using this routine. PWM1_Start should be called before using this routine, otherwise it will
have no effect as the PWM module is not running.

Example

PWM1_Stop

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Library Example

The example changes PWM duty ratio on pin PB3 continually. If LED is connected
to PB3, you can observe the gradual change of emitted light.
program PWM_Test
dim current_duty, current_duty1, old_duty, old_duty1 as byte
sub procedure InitMain()
ANSEL = 0
ANSELH = 0

' Configure AN pins as digital I/O

PORTA = 255
TRISA = 255
PORTB = 0
TRISB = 0
PORTC = 0
TRISC = 0
PWM1_Init(5000)
PWM2_Init(5000)
end sub

'
'
'
'
'
'
'

main:
InitMain()
current_duty = 16
current_duty1 = 16
PWM1_Start()
PWM2_Start()
PWM1_Set_Duty(current_duty)
PWM2_Set_Duty(current_duty1)
while (TRUE)
if (RA0_bit <> 0) then
Delay_ms(40)
Inc(current_duty)
PWM1_Set_Duty(current_duty)
end if
if (RA1_bit <> 0) then
Delay_ms(40)
Dec(current_duty)
PWM1_Set_Duty(current_duty)
end if
if (RA2_bit <> 0) then
Delay_ms(40)
Inc(current_duty1)
PWM2_Set_Duty(current_duty1)

382

configure PORTA
set PORTB to 0
designate PORTB
set PORTC to 0
designate PORTC
Initialize PWM1
Initialize PWM2

pins as input
pins as output
pins as output
module at 5KHz
module at 5KHz

' initial value for current_duty
' initial value for current_duty1
' start PWM1
' start PWM2
' Set current duty for PWM1
' Set current duty for PWM2
' endless loop
' button on RA0 pressed
' increment current_duty

' button on RA1 pressed
' decrement current_duty

' button on RA2 pressed
' increment current_duty1

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end if
if (RA3_bit <> 0) then
Delay_ms(40)
Dec(current_duty1)
PWM2_Set_Duty(current_duty1)
end if
Delay_ms(5)

' button on RA3 pressed
' decrement current_duty1

' slow down change pace a little

wend
end.

HW Connection

PWM demonstration

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RS-485 LIBRARY

RS-485 is a multipoint communication which allows multiple devices to be connected to a single bus. The mikroBasic PRO for PIC provides a set of library routines for
comfortable work with RS485 system using Master/Slave architecture. Master and
Slave devices interchange packets of information. Each of these packets contains
synchronization bytes, CRC byte, address byte and the data. Each Slave has
unique address and receives only packets addressed to it. The Slave can never initiate communication.
It is the user’s responsibility to ensure that only one device transmits via 485 bus at
a time.
The RS-485 routines require the UART module. Pins of UART need to be attached
to RS-485 interface transceiver, such as LTC485 or similar (see schematic at the
bottom of this page).
Note: The library uses the UART module for communication. The user must initialize the appropriate UART module before using the RS-485 Library. For MCUs with
two UART modules it is possible to initialize both of them and then switch by using
the UART_Set_Active function. See the UART Library functions.
Library constants:




START byte value = 150
STOP byte value = 169
Address 50 is the broadcast address for all Slaves (packets containing
address 50 will be received by all Slaves except the Slaves with addresses
150 and 169).

External dependencies of RS-485 Library
The following variable
must be defined in all projects using RS-485 Library:
dim RS485_rxtx_pin as
sbit sfr external

Description:

Example :

Control RS-485 Transdim RS485_rxtx_pin as
mit/Receive operation sbit at RC2_bit
mode

dim
dim
RS485_rxtx_pin_direction Direction of the RS-485 RS485_rxtx_pin_direcas sbit sfr ternal
tion as sbit at
Transmit/Receive pin
TRISC2_bit

384

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Library Routines







RS485Master_Init
RS485Master_Receive
RS485Master_Send
RS485Slave_Init
RS485Slave_Receive
RS485Slave_Send

RS485master_Init
Prototype

sub procedure RS485Master_Init()

Returns

Nothing.

Description Initializes MCU as a Master for RS-485 communication.
Global variables :


RS485_rxtx_pin - this pin is connected to RE/DE input of RS-485 trans

ceiver(see schematic at the bottom of this page). RE/DE signal controls
RS-485 transceiver operation mode.
Requires



RS485_rxtx_pin_direction - direction of the RS-485 Transmit/Receive

pin
must be defined before using this function.
UART HW module needs to be initialized. See UARTx_Init

Example

' RS485 module pinout
dim RS485_rxtx_pin as sbit at RC2_bit
dim RS485_rxtx_pin_direction as sbit at TRISC2_bit
' End of RS485 module pinout
...
UART1_Init(9600)
' initialize UART module
RS485Master_Init()
' intialize MCU as a Master
for RS-485 communication

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RS485master_Receive
Prototype

sub procedure RS485Master_Receive(dim byref data_buffer as byte[20])

Returns

Nothing.

Receives messages from Slaves. Messages are multi-byte, so this routine must
be called for each byte received.
Parameters :
 data_buffer: 7 byte buffer for storing received data, in the following man
ner:
 data[0..2]: message content
Description
 data[3]: number of message bytes received, 1–3
 data[4]: is set to 255 when message is received
 data[5]: is set to 255 if error has occurred
 data[6]: address of the Slave which sent the message
The function automatically adjusts data[4] and data[5] upon every received
message. These flags need to be cleared by software.
Requires

MCU must be initialized as a Master for RS-485 communication. See
RS485master_Init.

Example

dim msg as byte[20]
...
RS485Master_Receive(msg)

RS485master_Send
Prototype

sub procedure Rs485Master_Send(dim byref data_buffer as byte[20],
dim datalen as byte, dim slave_address as byte)

Returns

Nothing.
Sends message to Slave(s). Message format can be found at the bottom of this
page.

Description Parameters :




data_buffer: data to be sent
datalen: number of bytes for transmition. Valid values: 0...3.
slave_address: Slave(s) address

MCU must be initialized as a Master for RS-485 communication. See
RS485Master_Init.
Requires
It is the user’s responsibility to ensure (by protocol) that only one device sends
data via 485 bus at a time.
Example

386

dim msg as byte[20]
...
' send 3 bytes of data to slave with address 0x12
RS485Master_Send(msg, 3, 0x12)

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RS485slave_Init
Prototype

sub procedure RS485Slave_Init(dim slave_address as byte)

Returns

Nothing.
Initializes MCU as a Slave for RS-485 communication.

Description Parameters :
 slave_address: Slave address

Global variables :


RS485_rxtx_pin - this pin is connected to RE/DE input of RS-485 trans

ceiver(see schematic at the bottom of this page). RE/DE signal controls
RS-485 transceiver operation mode. Valid values: 1 (for transmitting) and
0 (for receiving)
Requires


RS485_rxtx_pin_direction - direction of the RS-485 Transmit/Receive

pin
must be defined before using this function.
UART HW module needs to be initialized. See UARTx_Init.

Example

' RS485 module pinout
dim RS485_rxtx_pin as sbit at RC2_bit
dim RS485_rxtx_pin_direction as sbit at TRISC2_bit
' End of RS485 module pinout
...
UART1_Init(9600)
' initialize UART module
RS485Slave_Init(160)
' intialize MCU as a Slave
for RS-485 communication with address 160

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RS485slave_Receive
Prototype

sub procedure RS485Slave_Receive(dim byref data_buffer as
byte[20])

Returns

Nothing.
Receives messages from Master. If Slave address and Message address field
don't match then the message will be discarded. Messages are multi-byte, so
this routine must be called for each byte received.
Parameters :
 data_buffer: 6 byte buffer for storing received data, in the following mann

Description

er:





data[0..2]: message content
data[3]: number of message bytes received, 1–3
data[4]: is set to 255 when message is received
data[5]: is set to 255 if error has occurred

The function automatically adjusts data[4] and data[5] upon every received
message. These flags need to be cleared by software.
Requires

MCU must be initialized as a Slave for RS-485 communication. See
RS485slave_Init.

Example

dim msg as byte[5]
...
RS485Slave_Read(msg)

RS485slave_Send
Prototype

sub procedure RS485Slave_Send(dim byref data_buffer as byte[20],
dim datalen as byte)

Returns

Nothing.
Sends message to Master. Message format can be found at the bottom of this page.

Description

Parameters :



388

data_buffer: data to be sent
datalen: number of bytes for transmition. Valid values: 0...3.

Requires

MCU must be initialized as a Slave for RS-485 communication. See
RS485Slave_Init. It is the user’s responsibility to ensure (by protocol) that only
one device sends data via 485 bus at a time.

Example

dim msg as byte[8]
...
' send 2 bytes of data to the master
RS485Slave_Send(msg, 2)

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Library Example
This is a simple demonstration of RS485 Library routines usage.
Master sends message to Slave with address 160 and waits for a response. The
Slave accepts data, increments it and sends it back to the Master. Master then does
the same and sends incremented data back to Slave, etc.
Master displays received data on PORTB, while error on receive (0xAA) and number of consecutive unsuccessful retries are displayed on PORTD. Slave displays
received data on PORTB, while error on receive (0xAA) is displayed on PORTD.
Hardware configurations in this example are made for the EasyPIC5 board and
16F887.
RS485 Master code:
program RS485_Master_Example
dim dat as byte[10]
i, j as byte
cnt as longint

' buffer for receving/sending messages

dim rs485_rxtx_pin as sbit at RC2_bit
' set transcieve pin
rs485_rxtx_pin_direction as sbit at TRISC2_bit
' set tran
scieve pin direction
' Interrupt routine
sub procedure interrupt()
RS485Master_Receive(dat)
end sub
main:
cnt = 0
ANSEL = 0
ANSELH = 0
C1ON_bit = 0
C2ON_bit = 0
PORTB
PORTD
TRISB
TRISD

=
=
=
=

' Configure AN pins as digital I/O

' Disable comparators

0
0
0
0

UART1_Init(9600)
Delay_ms(100)

' initialize UART1 module

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RS485Master_Init()
dat[0] = 0xAA
dat[1] = 0xF0
dat[2] = 0x0F
dat[4] = 0
dat[5] = 0
dat[6] = 0

' initialize MCU as Master

' ensure that message received flag is 0
' ensure that error flag is 0

RS485Master_Send(dat,1,160)
PIE1.RCIE = 1
PIE2.TXIE = 0
INTCON.PEIE = 1
INTCON.GIE = 1
while TRUE
Inc(cnt)
if (dat[5] <> 0) then
PORTD = 0xAA
end if

'
'
'
'

enable interrupt on UART1 receive
disable interrupt on UART1 transmit
enable peripheral interrupts
enable all interrupts

' upon completed valid message receiving
' data[4] is set to 255
' if an error detected, signal it
' by setting portd to 0xAA

if (dat[4] <> 0) then
' if message received successfully
cnt = 0
dat[4] = 0
' clear message received flag
j = dat[3]
for i = 1 to dat[3]
' show data on PORTB
PORTB = dat[i-1]
next i
dat[0] = dat[0]+1
' increment received dat[0]
Delay_ms(1)
' send back to slave
RS485Master_Send(dat,1,160)
end if
if (cnt > 100000) then
' if in 100000 poll-cycles the answer
Inc(PORTD)
'
was not detected, signal
cnt = 0
'
failure of send-message
RS485Master_Send(dat,1,160)
if (PORTD > 10) then
' if sending failed 10 times
RS485Master_Send(dat,1,50) ' send message on broadcast address
end if
end if
wend
end.

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RS485 Slave code:
program RS485_Slave_Example
dim dat as byte[20]
i, j as byte

' buffer for receving/sending messages

dim rs485_rxtx_pin as sbit at RC2_bit
' set transcieve pin
rs485_rxtx_pin_direction as sbit at TRISC2_bit ' set transcieve
pin direction
' Interrupt routine
sub procedure interrupt()
RS485Slave_Receive(dat)
end sub
main:
ANSEL =
ANSELH =
C1ON_bit
C2ON_bit
PORTB
PORTD
TRISB
TRISD

=
=
=
=

0
0
= 0
= 0

' Configure AN pins as digital I/O
' Disable comparators

0
0
0
0

UART1_Init(9600)
Delay_ms(100)
RS485Slave_Init(160)

' Initialize MCU as slave, address 160

dat[4] = 0
dat[5] = 0
dat[6] = 0

' ensure that message received flag is 0
' ensure that message received flag is 0
' ensure that error flag is 0

PIE1.RCIE = 1
PIE2.TXIE = 0
INTCON.PEIE = 1
INTCON.GIE = 1

' initialize UART1 module

'
'
'
'

enable interrupt on UART1 receive
disable interrupt on UART1 transmit
enable peripheral interrupts
enable all interrupts

while TRUE
if (dat[5] <> 0) then
' if an error detected, signal it by
PORTD = 0xAA
'
setting PORTD to 0xAA
dat[5] = 0
end if
if (dat[4] <> 0) then
' upon completed valid message receive
dat[4] = 0
' data[4] is set to 0xFF
j = dat[3]
for i = 1 to dat[3] ' show data on PORTB

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PORTB = dat[i-1]
next i
dat[0] = dat[0]+1
Delay_ms(1)
RS485Slave_Send(dat,1)
end if
wend
end.

' increment received dat[0]
'

and send it back to master

HW Connection

Example of interfacing PC to PIC16F887 MCU via RS485
bus with LTC485 as RS-485 transceiver

392

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Message format and CRC calculations
Q: How is CRC checksum calculated on RS485 master side?
_START_BYTE = 0x96; ' 10010110
_STOP_BYTE = 0xA9; ' 10101001
PACKAGE:
-------_START_BYTE 0x96
ADDRESS
DATALEN
[DATA1]
[DATA2]
[DATA3]
CRC
_STOP_BYTE 0xA9

' if exists
' if exists
' if exists

DATALEN bits
-----------bit7 = 1 MASTER SENDS
0
SLAVE SENDS
bit6 = 1 ADDRESS WAS XORed with 1, IT WAS EQUAL TO
_STOP_BYTE
0 ADDRESS UNCHANGED
bit5 = 0 FIXED
bit4 = 1 DATA3 (if exists) WAS XORed with 1, IT WAS
_START_BYTE or _STOP_BYTE
0 DATA3 (if exists) UNCHANGED
bit3 = 1 DATA2 (if exists) WAS XORed with 1, IT WAS
_START_BYTE or _STOP_BYTE
0 DATA2 (if exists) UNCHANGED
bit2 = 1 DATA1 (if exists) WAS XORed with 1, IT WAS
_START_BYTE or _STOP_BYTE
0 DATA1 (if exists) UNCHANGED
bit1bit0 = 0 to 3 NUMBER OF DATA BYTES SEND

_START_BYTE or

EQUAL TO

EQUAL TO

EQUAL TO

CRC generation :
---------------crc_send = datalen ^ address;
crc_send ^= data[0];
' if exists
crc_send ^= data[1];
' if exists
crc_send ^= data[2];
' if exists
crc_send = ~crc_send;
if ((crc_send == _START_BYTE) || (crc_send == _STOP_BYTE))
crc_send++;
NOTE: DATALEN<4..0> can not take the _START_BYTE<4..0> or
_STOP_BYTE<4..0> values.

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SOFTWARE I²C LIBRARY

The mikroBasic PRO for PIC provides routines for implementing Software I2C communication. These routines are hardware independent and can be used with any
MCU. The Software I2C library enables you to use MCU as Master in I2C communication. Multi-master mode is not supported.
Note: This library implements time-based activities, so interrupts need to be disabled when using Software I2C.
Note: All Software I2C Library functions are blocking-call functions (they are waiting
for I2C clock line to become logical one).
Note: The pins used for the Software I2C communication should be connected to
the pull-up resistors. Turning off the LEDs connected to these pins may also be
required.

External dependecies of Soft_I2C Library
The following variables
must be defined in all
projects using Soft_I2C
Library:

Description:

Example :

dim Soft_I2C_Scl as
sbit sfr external

Soft I2C Clock line.

dim Soft_I2C_Scl as
sbit at RC3_bit

dim Soft_I2C_Sda as
sbit sfr external

Soft I2C Data line.

dim Soft_I2C_Sda as
sbit at RC4_bit

dim
Direction of the Soft I2C
Soft_I2C_Scl_Direction Clock pin.
as sbit sfr external
dim
Direction of the Soft I2C
Soft_I2C_Sda_Direction Data pin.
as sbit sfr external

dim
Soft_I2C_Scl_Direction
as sbit at TRISC3_bit
dim
Soft_I2C_Sda_Direction
as sbit at TRISC4_bit

Library Routines







394

Soft_I2C_Init
Soft_I2C_Start
Soft_I2C_Read
Soft_I2C_Write
Soft_I2C_Stop
Soft_I2C_Break

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Soft_I2C_Init
Prototype

sub procedure Soft_I2C_Init()

Returns

Nothing.

Description Configures the software I2C module.
Global variables :





Requires

Soft_I2C_Scl: Soft I2C clockline
Soft_I2C_Sda: Soft I2C data line
Soft_I2C_Scl_Direction: Direction of the Soft I2C clock pin
Soft_I2C_Sda_Direction: Direction of the Soft I2C data pin

must be defined before using this function.

Example

'Soft_I2C pinout definition
dim Soft_I2C_Scl
as
dim Soft_I2C_Sda
as
dim Soft_I2C_Scl_Direction as sbit
dim Soft_I2C_Sda_Direction as sbit
'End of Soft_I2C pinout definition
...
Soft_I2C_Init()

sbit at RC3_bit
sbit at RC4_bit
at TRISC3_bit
at TRISC4_bit

Soft_I2C_Start
Prototype

sub procedure Soft_I2C_Start()

Returns

Nothing.

Description Determines if the I2C bus is free and issues START signal.
Requires

Software I2C must be configured before using this function. See Soft_I2C_Init
routine.

Example

' Issue START signal
Soft_I2C_Start()

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Soft_I2C_Read
Prototype

sub function Soft_I2C_Read(dim ack as word) as byte

Returns

One byte from the Slave.
Reads one byte from the slave.

Description

Parameters :


ack: acknowledge signal parameter. If the ack==0 not acknowledge sig
nal will be sent after reading, otherwise the acknowledge signal will be sent.

Soft I2C must be configured before using this function. See Soft_I2C_Init routine.
Requires

Example

Also, START signal needs to be issued in order to use this function. See
Soft_I2C_Start routine.
dim take as word
...
' Read data and send the not_acknowledge signal
take = Soft_I2C_Read(0)

Soft_I2C_Write
Prototype
Returns

sub function Soft_I2C_Write(dim _Data as byte) as byte
 0 if there were no errors.
 1 if write collision was detected on the I2C bus.

Sends data byte via the I2C bus.
Description

Parameters :
 _Data: data to be sent

Soft I2C must be configured before using this function. See Soft_I2C_Init routine.
Requires

Example

396

Also, START signal needs to be issued in order to use this function. See
Soft_I2C_Start routine.
dim _data, error as byte
...
error = Soft_I2C_Write(data)
error = Soft_I2C_Write(0xA3)

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Soft_I2C_Stop
Prototype

sub procedure Soft_I2C_Stop()

Returns

Nothing.

Description Issues STOP signal.
Requires

Soft I2C must be configured before using this function. See Soft_I2C_Init routine.

Example

' Issue STOP signal
Soft_I2C_Stop()

Soft_I2C_Break
Prototype
Returns

sub procedure Soft_I2C_Break()

Nothing.

All Software I2C Library functions can block the program flow (see note at the
top of this page). Calling this routine from interrupt will unblock the program
Description execution. This mechanism is similar to WDT.
Note: Interrupts should be disabled before using Software I2C routines again
(see note at the top of this page).
Requires

Nothing.
dim data1, error_, counter as byte

Example

sub procedure interrupt()
if (INTCON.T0IF <> 0) then
if (counter >= 20) then
Soft_I2C_Break()
counter = 0
' reset counter
end if
else
Inc(counter)
' increment counter
INTCON.T0IF = 0
' Clear Timer0 overflow interrupt flag
end if
end sub
main:
counter = 0
OPTION_REG = 0x04

' TMR0 prescaler set to 1:32

...
' try Soft_I2C_Init with blocking prevention mechanism
INTCON.GIE = 1
' Global interrupt enable
INTCON.T0IE = 1
' Enable Timer0 overflow interrupt
data1 = Soft_I2C_Init(error_)
INTCON.GIE = 0
' Global interrupt disable
end.

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LLibrary Example

The example demonstrates Software I˛C Library routines usage. The PIC MCU is
connected (SCL, SDA pins) to PCF8583 RTC (real-time clock). Program reads date
and time are read from the RTC and prints it on Lcd.
program RTC_Read
dim seconds, minutes, hours, _day, _month, year as byte
date/time variables

' Global

' Software I2C connections
dim Soft_I2C_Scl as sbit at RC3_bit
Soft_I2C_Sda as sbit at RC4_bit
Soft_I2C_Scl_Direction as sbit at TRISC3_bit
Soft_I2C_Sda_Direction as sbit at TRISC4_bit
' End Software I2C connections
' Lcd module connections
dim LCD_RS as sbit at RB4_bit
LCD_EN as sbit at RB5_bit
LCD_D4 as sbit at RB0_bit
LCD_D5 as sbit at RB1_bit
LCD_D6 as sbit at RB2_bit
LCD_D7 as sbit at RB3_bit
LCD_RS_Direction as sbit at
LCD_EN_Direction as sbit at
LCD_D4_Direction as sbit at
LCD_D5_Direction as sbit at
LCD_D6_Direction as sbit at
LCD_D7_Direction as sbit at
' End Lcd module connections

TRISB4_bit
TRISB5_bit
TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit

'--------------------- Reads time and date information from RTC
(PCF8583)
sub procedure Read_Time()
Soft_I2C_Start()
' Issue start signal
Soft_I2C_Write(0xA0)
' Address PCF8583, see PCF8583 datasheet
Soft_I2C_Write(2)
' Start from address 2
Soft_I2C_Start()
' Issue repeated start signal
Soft_I2C_Write(0xA1)
' Address PCF8583 for reading R/W=1
seconds = Soft_I2C_Read(1) ' Read seconds byte
minutes = Soft_I2C_Read(1) ' Read minutes byte
hours = Soft_I2C_Read(1)
' Read hours byte
_day = Soft_I2C_Read(1)
' Read year/day byte
_month = Soft_I2C_Read(0) ' Read weekday/month byte}
Soft_I2C_Stop()
' Issue stop signal}
end sub

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'-------------------- Formats date and time
sub procedure Transform_Time()
seconds = ((seconds and 0xF0) >> 4)*10 + (seconds and 0x0F) '
Transform seconds
minutes = ((minutes and 0xF0) >> 4)*10 + (minutes and 0x0F) '
Transform months
hours
= ((hours and 0xF0) >> 4)*10 + (hours and 0x0F)
'
Transform hours
year
=
(_day and 0xC0) >> 6
' Transform year
_day
= ((_day and 0x30) >> 4)*10
+ (_day and 0x0F)
'
Transform day
_month
= ((_month and 0x10) >> 4)*10 + (_month and 0x0F) '
Transform month
end sub
'-------------------- Output values to Lcd
sub procedure Display_Time()
Lcd_Chr(1, 7, (_day / 10)
+ 48)
' Print tens digit of day
variable
Lcd_Chr(1, 8, (_day mod 10)
+ 48) ' Print oness digit of day
variable
Lcd_Chr(1,10, (_month / 10) + 48)
Lcd_Chr(1,11, (_month mod 10) + 48)
Lcd_Chr(1,16, year
+ 56)
' Print year vaiable + 8
(start from year 2008)
Lcd_Chr(2, 7,
Lcd_Chr(2, 8,
Lcd_Chr(2,10,
Lcd_Chr(2,11,
Lcd_Chr(2,13,
Lcd_Chr(2,14,
end sub

(hours / 10)
+
(hours mod 10)
(minutes / 10) +
(minutes mod 10)
(seconds / 10) +
(seconds mod 10)

48)
+ 48)
48)
+ 48)
48)
+ 48)

'------------------ Performs project-wide init
sub procedure Init_Main()
TRISB = 0
PORTB = 0xFF
TRISB = 0xFF
ANSEL = 0
' Configure AN pins as digital I/O
ANSELH = 0
Soft_I2C_Init()
' Initialize Soft I2C communication
Lcd_Init()
' Initialize Lcd
Lcd_Cmd(_LCD_CLEAR)
' Clear Lcd display
Lcd_Cmd(_LCD_CURSOR_OFF) ' Turn cursor off
Lcd_Out(1,1,"Date:")
' Prepare and output static text on Lcd
Lcd_Chr(1,9,":")
Lcd_Chr(1,12,":")
Lcd_Out(2,1,"Time:")
Lcd_Chr(2,9,":")

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Lcd_Chr(2,12,":")
Lcd_Out(1,13,"200")
end sub

'----------------- Main sub procedure
main:
Init_Main()
' Perform initialization
while TRUE
Read_Time()
Transform_Time()
Display_Time()
wend
end.

400

' Endless loop
' Read time from RTC(PCF8583)
' Format date and time
' Prepare and display on Lcd

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SOFTWARE SPI LIBRARY
The mikroBasic PRO for PIC provides routines for implementing Software SPI communication. These routines are hardware independent and can be used with any
MCU. The Software SPI Library provides easy communication with other devices via
SPI: A/D converters, D/A converters, MAX7219, LTC1290, etc.
Library configuration:







SPI to Master mode
Clock value = 20 kHz.
Data sampled at the middle of interval.
Clock idle state low.
Data sampled at the middle of interval.
Data transmitted at low to high edge.

Note: The Software SPI library implements time-based activities, so interrupts need
to be disabled when using it.

External dependencies of Software SPI Library
The following variables
must be defined in all
projects using Software
SPI Library:

Description:

Example :

dim SoftSpi_SDI as
sbit sfr external

Data In line.

dim SoftSpi_SDI as
sbit at RC4_bit

dim SoftSpi_SDO as
sbit sfr external

Data Out line.

dim SoftSpi_SDO as
sbit at RC5_bit

dim SoftSpi_CLK as
sbit sfr external
dim
SoftSpi_SDI_Direction
as sbit sfr external
dim
SoftSpi_SDO_Direction
as sbit sfr external
dim
SoftSpi_CLK_Direction
as sbit sfr external

dim SoftSpi_CLK as
sbit at RC3_bit
dim
Direction of the Data In pin. SoftSpi_SDI_Direction
as sbit at TRISC4_bit
Direction of the Data Out dim
SoftSpi_SDO_Direction
pin
as sbit at TRISC5_bit
dim
Direction of the Clock pin SoftSpi_CLK_Direction
as sbit at TRISC3_bit

Clock line.

Library Routines




Soft_Spi_Init
Soft_Spi_Read
Soft_Spi_Write

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Soft_Spi_Init
Prototype

sub procedure Soft_SPI_Init()

Returns

Nothing.

Description Configures and initializes the software SPI module.
Global variables:

Requires










Chip_Select: Chip select line
SoftSpi_SDI: Data in line
SoftSpi_SDO: Data out line
SoftSpi_CLK: Data clock line
Chip_Select_Direction: Direction
SoftSpi_SDI_Direction: Direction
SoftSpi_SDO_Direction: Direction
SoftSpi_CLK_Direction: Direction

of
of
of
of

the
the
the
the

Chip select pin
Data in pin
Data out pin
Data clock pin

must be defined before using this function.
' soft_spi pinout definition
dim Chip_Select as sbit at RC1_bit
dim SoftSpi_SDI as sbit at RC4_bit
dim SoftSpi_SDO as sbit at RC5_bit
dim SoftSpi_CLK as sbit at RC3_bit

Example

402

dim Chip_Select_Direction as sbit at
dim SoftSpi_SDI_Direction as sbit at
dim SoftSpi_SDO_Direction as sbit at
dim SoftSpi_CLK_Direction as sbit at
' end of soft_spi pinout definition
...
Soft_SPI_Init() ' Init Soft_SPI

TRISC1_bit
TRISC4_bit
TRISC5_bit
TRISC3_bit

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Soft_Spi_Read
Prototype

sub function Soft_SPI_Read(dim sdata as byte) as word

Returns

Byte received via the SPI bus.
This routine performs 3 operations simultaneously. It provides clock for the Software SPI bus, reads a byte and sends a byte.

Description

Parameters :


sdata: data to be sent.

Requires

Soft SPI must be initialized before using this function. See Soft_SPI_Init routine.

Example

dim data_read as byte
data_send as byte
...
' Read a byte and assign it to data_read variable
' (data_send byte will be sent via SPI during the Read operation)
data_read = Soft_SPI_Read(data_send)

Soft_Spi_Write
Prototype

sub procedure Soft_SPI_Write(dim sdata as byte)

Returns

Nothing.
This routine sends one byte via the Software SPI bus.

Description Parameters :


sdata: data to be sent

Requires

Soft SPI must be initialized before using this function. See Soft_SPI_Init routine.

Example

' Write a byte to the Soft SPI bus
Soft_SPI_Write(0xAA)

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Library Example

This code demonstrates using library routines for Soft_SPI communication. Also,
this example demonstrates working with Microchip's MCP4921 12-bit D/A con
verter.
program Soft_SPI
' DAC module connections
dim Chip_Select as sbit at
SoftSpi_CLK as sbit at
SoftSpi_SDI as sbit at
SoftSpi_SDO as sbit at

RC1_bit
RC3_bit
RC4_bit
RC5_bit

dim Chip_Select_Direction as
SoftSpi_CLK_Direction as
SoftSpi_SDI_Direction as
SoftSpi_SDO_Direction as
' End DAC module connections

sbit
sbit
sbit
sbit

at
at
at
at

TRISC1_bit
TRISC3_bit
TRISC4_bit
TRISC5_bit

dim value as word
sub procedure InitMain()
TRISA0_bit = 1
TRISA1_bit = 1
Chip_Select = 1
Chip_Select_Direction = 0
Soft_Spi_Init()
end sub

'
'
'
'
'

Set RA0 pin as input
Set RA1 pin as input
Deselect DAC
Set CS# pin as Output
Initialize Soft_SPI

' DAC increments (0..4095) --> output voltage (0..Vref)
sub procedure DAC_Output(dim valueDAC as word)
dim temp as byte
Chip_Select = 0
' Select DAC chip
' Send High Byte
temp = word(valueDAC >> 8) and 0x0F
' Store valueDAC[11..8] to
temp[3..0]
temp = temp or 0x30
Soft_SPI_Write(temp)
' Send Low Byte
temp = valueDAC
Soft_SPI_Write(temp)
Chip_Select = 1
end sub

404

' Define DAC setting, see MCP4921 datasheet
' Send high byte via Soft SPI

' Store valueDAC[7..0] to temp[7..0]
' Send low byte via Soft SPI
' Deselect DAC chip

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main:
ANSEL = 0
ANSELH = 0
InitMain()
value = 2048

' Perform main initialization
' When program starts, DAC gives
' the output in the mid-range
while (TRUE)
' Endless loop
if ((RA0_bit) and (value < 4095)) then
' If PA0 button is
pressed
Inc(value)
'
increment value
else
if ((RA1_bit) and (value > 0)) then
'If PA1 button is pressed
Dec(value)
' decrement value
end if
end if
DAC_Output(value)
Delay_ms(1)
wend
end.

' Send value to DAC chip
' Slow down key repeat pace

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SOFTWARE UART LIBRARY

mikroBasic provides library which implements software UART. These routines are hardware independent and can be used with any MCU. You can easily communicate with other devices via
RS232 protocol – simply use the functions listed below.
Note: This library implements time-based activities, so interrupts need to be disabled when using
Soft UART.

Library Routines





Soft_Uart_Init
Soft_Uart_Read
Soft_Uart_Write
Soft_UART_Break

Soft_UART_Init
Prototype
Returns

sub procedure Soft_UART_Init(dim byref port as byte, dim rx_pin,
tx_pin, baud_rate, inverted as byte) as byte




2 - error, requested baud rate is too low
1 - error, requested baud rate is too high
0 - successfull initialization

Configures and initializes the software UART module.
Parameters :

Description






port: port to be used.
rx_pin: sets rx_pin to be used.
tx_pin: sets tx_pin to be used.
baud_rate: baud rate to be set. Maximum baud rate depends on the



MCU’s clock and working conditions.
inverted: inverted output flag. When set to a non-zero value, inverted
logic on output is used.

Software UART routines use Delay_Cyc routine. If requested baud rate is too
low then calculated parameter for calling Delay_Cyc exceeeds Delay_Cyc
argument range.
If requested baud rate is too high then rounding error of Delay_Cyc argument
corrupts Software UART timings.
Requires

Nothing.
This will initialize software UART and establish the communication at 9600 bps:

Example

406

dim error as byte
...
error = Soft_UART_Init(PORTB, 1, 2, 9600, 0)

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Soft_UART_Read
Prototype

sub function Soft_UART_Read(dim byref error as byte) as byte

Returns

Returns a received byte.

Function receives a byte via software UART. Parameter error will be zero if the
Description transfer was successful. This is a non-blocking function call, so you should test
the error manually (check the example below).
Requires

Soft UART must be initialized and communication established before using this
function. See Soft_UART_Init.
Here’s a loop which holds until data is received:

Example

error = 1
do
data = Soft_UART_Read(error)
loop until error = 0

Soft_Uart_Write
Prototype

sub procedure Soft_UART_Write(dim data as byte)

Returns

Nothing.

Description Function transmits a byte (data) via UART.
Soft UART must be initialized and communication established before using this
function. See Soft_UART_Init.
Requires

Example

Be aware that during transmission, software UART is incapable of receiving
data – data transfer protocol must be set in such a way to prevent loss of information.
Soft_UART_Write($0A)

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Soft_UART_Break
Prototype

sub procedure Soft_UART_Break()

Returns

Nothing.

Description

Soft_UART_Read is blocking routine and it can block the program flow. Call this
routine from interrupt to unblock the program execution. This mechanism is similar to WDT.
Note: Interrupts should be disabled before using Software UART routines again
(see note at the top of this page).

Requires

Nothing.
dim data1, error_, counter as byte
sub procedure interrupt()
if (INTCON.T0IF <> 0) then
if (counter >= 20) then
Soft_UART_Break()
counter = 0
' reset counter
end if
else
Inc(counter)
' increment counter
INTCON.T0IF = 0
' Clear Timer0 overflow interrupt flag
end if
end sub

Example

main:
counter = 0
OPTION_REG = 0x04

' TMR0 prescaler set to 1:32

...
if (Soft_UART_Init(PORTC, 7, 6, 9600, 0) = 0) then
Soft_UART_Write(0x55)
end if
...
' try Soft_UART_Read with blocking prevention mechanism
INTCON.GIE = 1
' Global interrupt enable
INTCON.T0IE = 1
' Enable Timer0 overflow interrupt
data1 = Soft_UART_Read(error_)
INTCON.GIE = 0
' Global interrupt disable
end.

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Library Example
The example demonstrates simple data exchange via software UART. When PIC
MCU receives data, it immediately sends the same data back. If PIC is connected
to the PC (see the figure below), you can test the example from mikroBasic PRO for
PIC terminal for RS232 communication, menu choice Tools › Terminal.
program Soft_UART
dim error_flag as byte
counter, byte_read as byte
main:
ANSEL = 0
ANSELH = 0

' Auxiliary variables

' Configure AN pins as digital I/O

TRISB = 0x00
' Set PORTB as output (error sig
nalization)
PORTB = 0
' No error
VDelay_ms(370)
error_flag = Soft_UART_Init(PORTC, 7, 6, 14400, 0) ' Initialize
Soft UART at 14400 bps
if (error_flag > 0) then
PORTB = error_flag
' Signalize Init error
while (TRUE)
nop
' Stop program
wend
end if
Delay_ms(100)

for counter = "z" to "A" step -1
Soft_UART_Write(counter)
Delay_ms(100)
next counter

' Send bytes from 'z' downto 'A'

while TRUE
' Endless loop
byte_read = Soft_UART_Read(error_flag)' Read byte, then test
error flag
if (error_flag <> 0) then
' If error was detected
PORTB = error_flag
' signal it on PORTB
else
Soft_UART_Write(byte_read)
' If error was not detected,
return byte read
end if
wend
end.

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SOUND LIBRARY

The mikroBasic PRO for PIC provides a Sound Library to supply users with rou
tines
necessary for sound signalization in their applications. Sound generation needs additional hardware, such as piezo-speaker (example of piezo-speaker interface is given on the schematic at the
bottom of this page).

Library Routines
 Sound_Init
 Sound_Play

Sound_Init
Prototype

sub procedure Sound_Init(dim byref snd_port as byte, dim snd_pin
as byte)

Returns

Nothing.
Configures the appropriate MCU pin for sound generation.

Description

Parameters :



410

snd_port: sound output port address
snd_pin: sound output pin

Requires

Nothing.

Example

Sound_Init(PORTD, 3)

' Initialize sound at RD3

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Sound_Play
Prototype

sub procedure Sound_Play(dim freq_in_Hz as word, dim duration_ms as
word)

Returns

Nothing.
Generates the square wave signal on the appropriate pin.

Description

Parameters :



freq_in_Hz: signal frequency in Hertz (Hz)
duration_ms: signal duration in miliseconds (ms)

Requires

In order to hear the sound, you need a piezo speaker (or other hardware) on
designated port. Also, you must call Sound_Init to prepare hardware for output
before using this function.

Example

' Play sound of 1KHz in duration of 100ms
Sound_Play(1000, 100)

Library Example
The example is a simple demonstration of how to use the Sound Library for playing tones on a
piezo speaker.
program Sound
sub procedure Tone1()
Sound_Play(659, 250)
end sub
sub procedure Tone2()
Sound_Play(698, 250)
end sub
sub procedure Tone3()
Sound_Play(784, 250)
end sub
sub procedure Melody()
Tone1() Tone2() Tone3()
Tone1() Tone2() Tone3()
Tone1() Tone2() Tone3()
Tone1() Tone2() Tone3()
Tone1() Tone2() Tone3()
Tone3() Tone3() Tone2()
end sub
sub procedure ToneA()

' Frequency = 659Hz, duration = 250ms

' Frequency = 698Hz, duration = 250ms

' Frequency = 784Hz, duration = 250ms

' Plays the melody "Yellow house"
Tone3()
Tone3()
Tone3()
Tone2() Tone1()

' Tones used in Melody2 function

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Sound_Play( 880, 50)
end sub
sub procedure ToneC()
Sound_Play(1046, 50)
end sub
sub procedure ToneE()
Sound_Play(1318, 50)
end sub
sub procedure Melody2()
dim counter as byte
for counter = 9 to 1 step -1
ToneA()
ToneC()
ToneE()
next counter
end sub

' Plays Melody2

main:
ANSEL = 0
ANSELH = 0

' Configure AN pins as digital I/O

C1ON_bit = 0
C2ON_bit = 0

' Disable comparators

TRISB = 0xF0
as output

' Configure RB7..RB4 as input, RB3

Sound_Init(PORTD, 3)
Sound_Play(880, 5000)
while TRUE
' endless loop
if (Button(PORTB,7,1,1)) then ' If PORTB.7 is pressed play Tone1
Tone1()
while (RB7_bit <> 0)
nop
' Wait for button to be released
wend
end if
if (Button(PORTB,6,1,1)) then ' If PORTB.6 is pressed play
Tone1
Tone2()
while (RB6_bit <> 0)
nop
' Wait for button to be released
wend
end if

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if (Button(PORTB,4,1,1)) then
' If PORTB.4 is pressed play
Tone1
Melody()
while (RB4_bit <> 0)
nop
' Wait for button to be released
wend
end if
wend
end.

HW Connection

Example of Sound Library sonnection

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SPI LIBRARY

SPI module is available with a number of PIC MCU models. mikroBasic PRO for PIC provides a
library for initializing Slave mode and comfortable work with Master mode. PIC can easily communicate with other devices via SPI: A/D converters, D/A converters, MAX7219, LTC1290, etc.
You need PIC MCU with hardware integrated SPI (for example, PIC16F877).
Note: Some PIC18 MCUs have multiple SPI modules. Switching between the SPI modules in the
SPI library is done by the SPI_Set_Active function (SPI module has to be previously initialized).
Note: In order to use the desired SPI library routine, simply change the number 1 in the prototype
with the appropriate module number, i.e. SPI2_Init()

Library Routines






Spi_Init
Spi_Init_Advanced
Spi_Read
Spi_Write
SPI_Set_Active

SPI1_Init
Prototype

sub procedure SPI1_Init()

Returns

Nothing.
This routine configures and enables SPI module with the following settings:

Description

414








master mode
8 bit data transfer
most significant bit sent first
serial clock low when idle
data sampled on leading edge
serial clock = fosc/4

Requires

MCU must have SPI module.

Example

' Initialize the SPI module with default settings
SPI1_Init()

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Spi1_Init_Advanced
Prototype
Returns

sub procedure SPI1_Init_Advanced(dim master_slav, data_sample,
clock_idle, transmit_edge as byte)

Nothing.
Configures and initializes SPI. SPI1_Init_Advanced or SPI1_Init needs to be
called before using other functions of SPI Library.
Parameters mode, data_sample and clock_idle configure the SPI module, and
can have the following values:
Description

Predefined library const
SPI work mode:

Description

Master clock = Fosc/4

_MASTER_OSC_DIV4

Master clock = Fosc/16

_MASTER_OSC_DIV16

Master clock = Fosc/64

_MASTER_OSC_DIV64

Master clock source TMR2

_MASTER_TMR2

Slave select enabled

_SLAVE_SS_ENABLE

Slave select disabled

_SLAVE_SS_DIS

Data sampling interval:
Input data sampled in middle of
_DATA_SAMPLE_MIDDLE
interval
Input data sampled at the end of
_DATA_SAMPLE_END
interval

SPI clock idle state:
Clock idle HIGH

_CLK_IDLE_HIGH

Clock idle LOW

_CLK_IDLE_LOW

Transmit edge:
Data transmit on low to high
edgefirst
Data transmit on high to low
edge _HIGH_2_LOW

_LOW_2_HIGH

_HIGH_2_LOW

Requires

MCU must have SPI module.

Example

' Set SPI to master mode, clock = Fosc/4, data sampled at the
middle of interval, clock idle state low and data transmitted at
low to high edge:
SPI1_Init_Advanced(_MASTER_OSC_DIV4, _DATA_SAMPLE_MIDDLE,
_CLK_IDLE_LOW, _LOW_2_HIGH)

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Spi1_Read
Prototype

sub function SPI1_Read(dim buffer as byte) as byte

Returns

Received data.
Reads one byte from the SPI bus.

Description

Parameters :


buffer: dummy data for clock generation (see device Datasheet for SPI

modules implementation details)
Requires

SPI module must be initialized before using this function. See SPI1_Init and
SPI1_Init_Advanced routines.

Example

' read a byte from the SPI bus
dim take, dummy1 as byte
...
take = SPI1_Read(dummy1)

Spi1_Write
Prototype

sub procedure SPI1_Write(dim wrdata as byte)

Returns

Nothing.
Writes byte via the SPI bus.

Description Parameters :


416

wrdata: data to be sent

Requires

SPI module must be initialized before using this function. See SPI1_Init and
SPI1_Init_Advanced routines.

Example

' write a byte to the SPI bus
dim buffer as byte
...
SPI1_Write(buffer)

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SPI_Set_Active
Prototype

void SPI_Set_Active(char (*read_ptr)(char))

Returns

Nothing.
Sets the active SPI module which will be used by the SPI routines.

Description Parameters :
 read_ptr: SPI1_Read handler

Routine is available only for MCUs with two SPI modules.
Requires

Example

Used SPI module must be initialized before using this function. See the
SPI1_Init, SPI1_Init_Advanced
SPI_Set_Active(SPI2_Read) ' Sets the SPI2 module active

Library Example
The code demonstrates how to use SPI library functions for communication between SPI module
of the MCU and Microchip's MCP4921 12-bit D/A converter
program SPI
' DAC module connections
dim Chip_Select as sbit at RC1_bit
Chip_Select_Direction as sbit at TRISC1_bit
' End DAC module connections
dim value as word
sub procedure InitMain()
TRISA0_bit = 1
TRISA1_bit = 1
Chip_Select = 1
Chip_Select_Direction = 0
SPI1_Init()
end sub

'
'
'
'
'

Set RA0 pin as input
Set RA1 pin as input
Deselect DAC
Set CS# pin as Output
Initialize SPI1 module

' DAC increments (0..4095) --> output voltage (0..Vref)
sub procedure DAC_Output(dim valueDAC as word)
dim temp as byte
Chip_Select = 0
' Select DAC chip
' Send High Byte
temp = word(valueDAC >> 8) and 0x0F ' Store valueDAC[11..8] to
temp[3..0]
temp = temp or 0x30 ' Define DAC setting, see MCP4921 datasheet

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SPI1_Write(temp)
' Send Low Byte
temp = valueDAC
SPI1_Write(temp)
Chip_Select = 1
end sub

' Send high byte via SPI

' Store valueDAC[7..0] to temp[7..0]
' Send low byte via SPI
' Deselect DAC chip

main:
ANSEL = 0
ANSELH = 0
InitMain()
value = 2048

' Perform main initialization
' When program starts, DAC gives
' the output in the mid-range
while TRUE
' Endless loop
if ((RA0_bit) and (value < 4095)) then ' If RA0 button is pressed
Inc(value)
' increment value
else
if ((RA1_bit) and (value > 0)) then
' If RA1 button is pressed
Dec(value)
' decrement value
end if
end if

DAC_Output(value)
Delay_ms(1)
wend
end.

' Send value to DAC chip
' Slow down key repeat pace

HW Connection

SPI HW connection

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SPI ETHERNET LIBRARY
The ENC28J60 is a stand-alone Ethernet controller with an industry standard Serial
Peripheral Interface (SPI™). It is designed to serve as an Ethernet network interface
for any controller equipped with SPI.
The ENC28J60 meets all of the IEEE 802.3 specifications. It incorporates a number
of packet filtering schemes to limit incoming packets. It also provides an internal
DMA module for fast data throughput and hardware assisted IP checksum calculations. Communication with the host controller is implemented via two interrupt pins
and the SPI, with data rates of up to 10 Mb/s. Two dedicated pins are used for LED
link and network activity indication.
This library is designed to simplify handling of the underlying hardware (ENC28J60).
It works with any PIC with integrated SPI and more than 4 Kb ROM memory. 38 to
40 MHz clock is recommended to get from 8 to 10 Mhz SPI clock, otherwise PIC
should be clocked by ENC28J60 clock output due to its silicon bug in SPI hardware.
If you try lower PIC clock speed, there might be board hang or miss some requests.
SPI Ethernet library supports:











IPv4 protocol.
ARP requests.
ICMP echo requests.
UDP requests.
TCP requests (no stack, no packet reconstruction).
ARP client with cache.
DNS client.
UDP client.
DHCP client.
packet fragmentation is NOT supported.

Note: Due to PIC16 RAM/Flash limitations pic16 library does NOT have ARP, DNS,
UDP and DHCP client support implemented.
Note: Global library variable SPI_Ethernet_userTimerSec is used to keep track of
time for all client implementations (ARP, DNS, UDP and DHCP). It is user responsibility to increment this variable each second in it's code if any of the clients is used.
Note: For advanced users there are header files ("eth_enc28j60LibDef.h" and
"eth_enc28j60LibPrivate.h") in Uses\P16 and Uses\P18 folders of the compiler
with description of all routines and global variables, relevant to the user, implemented in the SPI Ethernet Library.

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Note: The appropriate hardware SPI module must be initialized before using any of
the SPI Ethernet library routines. Refer to SPI Library.
For MCUs with two SPI modules it is possible to initialize both of them and then
switch by using the SPI_Set_Active() routine.

External dependencies of SPI Ethernet Library
The following variables
must be defined in all
projects using SPI Ethernet Library:
dim SPI_Ethernet_CS as
sbit sfr external
dim SPI_Ethernet_RST as
sbit sfr external
dim
SPI_Ethernet_CS_Directi
on as sbit sfr external

Description:

Example :

ENC28J60 chip select
pin.

dim SPI_Ethernet_CS
as sbit at RC1_bit
dim SPI_Ethernet_RST
as sbit at RC0_bit
dim
SPI_Ethernet_CS_Direc
tion as sbit at
TRISC1_bit
dim
SPI_Ethernet_RST_Dire
ction as sbit at
TRISC0_bit

ENC28J60 reset pin.
Direction of the
ENC28J60 chip select
pin.

dim
Direction of the
SPI_Ethernet_RST_Direct ENC28J60 reset pin.
ion as sbit sfr external

The following routines must
be defined in all project
using SPI Ethernet Library:

Description:

Example :

sub function
SPI_Ethernet_UserTCP
Refer to the
(dim remoteHost as ^byte,
library example at
TCP request handler. the bottom of this
dim remotePort as word,
dim localPort as word,
page for code
dim reqLength as word) as
implementation.
word
sub function
SPI_Ethernet_UserUDP(dim
Refer to the
remoteHost as ^byte,
library example at
UDP request handler. the bottom of this
dim remotePort as word,
dim destPort as word,
page for code
dim reqLength as word) as
implementation.
word

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Library Routines














SPI_Ethernet_Init
SPI_Ethernet_Enable
SPI_Ethernet_Disable
SPI_Ethernet_doPacket
SPI_Ethernet_putByte
SPI_Ethernet_putBytes
SPI_Ethernet_putString
SPI_Ethernet_putConstString
SPI_Ethernet_putConstBytes
SPI_Ethernet_getByte
SPI_Ethernet_getBytes
SPI_Ethernet_UserTCP
SPI_Ethernet_UserUDP

SPI_Ethernet_Init
Prototype

sub procedure SPI_Ethernet_Init(dim mac as ^byte, dim ip as
^byte, dim fullDuplex as byte)

Returns

Nothing.
This is MAC module routine. It initializes ENC28J60 controller. This function is
internaly splited into 2 parts to help linker when coming short of memory.
ENC28J60 controller settings (parameters not mentioned here are set to default):

Description















receive buffer start address : 0x0000.
receive buffer end address : 0x19AD.
transmit buffer start address: 0x19AE.
transmit buffer end address : 0x1FFF.
RAM buffer read/write pointers in auto-increment mode.
receive filters set to default: CRC + MAC Unicast + MAC Broadcast in OR
mode.
flow control with TX and RX pause frames in full duplex mode.
frames are padded to 60 bytes + CRC.
maximum packet size is set to 1518.
Back-to-Back Inter-Packet Gap: 0x15 in full duplex mode; 0x12 in half
duplex mode.
Non-Back-to-Back Inter-Packet Gap: 0x0012 in full duplex mode; 0x0C12
in half duplex mode.
Collision window is set to 63 in half duplex mode to accomodate some
ENC28J60 revisions silicon bugs.
CLKOUT output is disabled to reduce EMI generation.

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half duplex loopback disabled.
LED configuration: default (LEDA-link status, LEDB-link activity).

Parameters:
Description




mac: RAM buffer containing valid MAC address.
ip: RAM buffer containing valid IP address.
fullDuplex: ethernet duplex mode switch. Valid values: 0 (half duplex
mode) and 1 (full duplex mode).

Global variables :

Requires






SPI_Ethernet_CS: Chip Select line
SPI_Ethernet_CS_Direction: Direction of the Chip Select pin
SPI_Ethernet_RST: Reset line
SPI_Ethernet_RST_Direction: Direction of the Reset pin

must be defined before using this function.
The SPI module needs to be initialized. See the SPI1_Init and
SPI1_Init_Advanced routines.
' mE ehternet NIC pinout

Example

dim SPI_Ethernet_RST as sbit at RC0_bit
dim SPI_Ethernet_CS as sbit at RC1_bit
dim SPI_Ethernet_RST_Direction as sbit at TRISC0_bit
dim SPI_Ethernet_CS_Direction as sbit at TRISC1_bit
' end mE ehternet NIC pinout
const SPI_Ethernet_HALFDUPLEX = 0
const SPI_Ethernet_FULLDUPLEX = 1
myMacAddr as
myIpAddr as
...
myMacAddr[0]
myMacAddr[1]
myMacAddr[2]
myMacAddr[3]
myMacAddr[4]
myMacAddr[5]

byte[6] ' my MAC address
byte[4] ' my IP addr
=
=
=
=
=
=

0x00
0x14
0xA5
0x76
0x19
0x3F

myIpAddr[0]
myIpAddr[1]
myIpAddr[2]
myIpAddr[3]

=
=
=
=

192
168
20
60

SPI1_Init()
SPI_Ethernet_Init(myMacAddr, myIpAddr, SPI_Ethernet_FULLDUPLEX)

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SPI_Ethernet_Enable
Prototype

sub procedure SPI_Ethernet_Enable(dim enFlt as byte)

Returns

Nothing.
This is MAC module routine. This routine enables appropriate network traffic on
the ENC28J60 module by the means of it's receive filters (unicast, multicast,
broadcast, crc). Specific type of network traffic will be enabled if a corresponding bit of this routine's input parameter is set. Therefore, more than one type of
network traffic can be enabled at the same time. For this purpose, predefined
library constants (see the table below) can be ORed to form appropriate input
value.
Parameters:

enFlt: network traffic/receive filter flags. Each bit corresponds to the
appropriate network traffic/receive filter:

Bit Mask

Description
MAC Broadcast traffic/receive filter

0

0x01 flag. When set, MAC broadcast traf-

fic will be enabled.
Description

MAC Multicast traffic/receive filter
1

0x02 flag. When set, MAC multicast traffic

will be enabled.

Predefined library const
_SPI_Ethernet_BROADCAST
_SPI_Ethernet_MULTICAST

2

0x04 not used

none

3

0x08 not used

none

4

0x10 not used

none

5

0x20

6

0x40 not used

7

0x80 When set, MAC unicast traffic will be _SPI_Ethernet_UNICAST

CRC check flag. When set, packets
_SPI_Ethernet_CRC
with invalid CRC field will be discarded.
none

MAC Unicast traffic/receive filter flag.
enabled.
Note: Advance filtering available in the ENC28J60 module such as Pattern
Match, Magic Packet and Hash Table can not be enabled by this routine. Additionaly, all filters, except CRC, enabled with this routine will work in OR mode,
which means that packet will be received if any of the enabled filters accepts it.

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Note: This routine will change receive filter configuration on-the-fly. It will not, in
any way, mess with enabling/disabling receive/transmit logic or any other part of
Description
the ENC28J60 module. The ENC28J60 module should be properly cofigured by
the means of SPI_Ethernet_Init routine.
Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

SPI_Ethernet_Enable(_SPI_Ethernet_CRC or _SPI_Ethernet_UNICAST)
' enable CRC checking and Unicast traffic

SPI_Ethernet_Disable
Prototype

sub procedure SPI_Ethernet_Disable(dim disFlt as byte)

Returns

Nothing.
This is MAC module routine. This routine disables appropriate network traffic on the
ENC28J60 module by the means of it's receive filters (unicast, multicast, broadcast,
crc). Specific type of network traffic will be disabled if a corresponding bit of this routine's input parameter is set. Therefore, more than one type of network traffic can be
disabled at the same time. For this purpose, predefined library constants (see the
table below) can be ORed to form appropriate input value.
Parameters:

disFlt: network traffic/receive filter flags. Each bit corresponds to the
appropriate network traffic/receive filter:

Bit Mask

Description

0

0x01

MAC Broadcast traffic/receive filter flag. When
set, MAC broadcast traffic will be disabled.

1

0x02

MAC Multicast traffic/receive filter flag. When _SPI_Ethernet_MU
LTICAST
set, MAC multicast traffic will be disabled.

2

0x04 not used

none

3

0x08 not used

none

4

0x10 not used

none

5

0x20 be disabled and packets with invalid CRC

Description

CRC check flag. When set, CRC check will
field will be accepted.

424

Predefined library
const

6

0x40 not used

7

0x80

MAC Unicast traffic/receive filter flag. When
set, MAC unicast traffic will be disabled.

_SPI_Ethernet_BR
OADCAST

_SPI_Ethernet_CR
C
none
_SPI_Ethernet_UN
ICAST

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Note: Advance filtering available in the ENC28J60 module such as Pattern
Match, Magic Packet and Hash Table can not be disabled by this routine.
Description Note: This routine will change receive filter configuration on-the-fly. It will not, in
any way, mess with enabling/disabling receive/transmit logic or any other part of
the ENC28J60 module. The ENC28J60 module should be properly cofigured by
the means of SPI_Ethernet_Init routine.
Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

SPI_Ethernet_Disable(_SPI_Ethernet_CRC or _SPI_Ethernet_UNICAST)
' disable CRC checking and Unicast traffic

SPI_Ethernet_doPacket
Prototype

sub function SPI_Ethernet_doPacket() as byte


0 - upon successful packet processing (zero packets received or received



1 - upon reception error or receive buffer corruption. ENC28J60 controller



2 - received packet was not sent to us (not our IP, nor IP broadcast




3 - received IP packet was not IPv4
4 - received packet was of type unknown to the library.

packet processed successfully).
Returns

needs to be restarted.
address).

This is MAC module routine. It processes next received packet if such exists.
Packets are processed in the following manner:

Description

 ARP & ICMP requests are replied automatically.
 upon TCP request the SPI_Ethernet_UserTCP function is called for further

processing.
 upon UDP request the SPI_Ethernet_UserUDP function is called for further processing.
Note: SPI_Ethernet_doPacket must be called as often as possible in user's
code.

Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

while TRUE
...
SPI_Ethernet_doPacket() ' process received packets
...
wend

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SPI_Ethernet_putByte
Prototype

sub procedure SPI_Ethernet_putByte(dim v as byte)

Returns

Nothing.
This is MAC module routine. It stores one byte to address pointed by the current ENC28J60 write pointer (EWRPT).

Description

Parameters:


v: value to store

Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

dim data as byte
...
SPI_Ethernet_putByte(data) ' put an byte into ENC28J60 buffer

SPI_Ethernet_putBytes
Prototype

sub procedure SPI_Ethernet_putBytes(dim ptr as ^byte, dim n as
byte)

Returns

Nothing.
This is MAC module routine. It stores requested number of bytes into
ENC28J60 RAM starting from current ENC28J60 write pointer (EWRPT) location.

Description Parameters:




426

ptr: RAM buffer containing bytes to be written into ENC28J60 RAM.
n: number of bytes to be written.

Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

dim
buffer as byte[17]
...
buffer = "mikroElektronika"
...
SPI_Ethernet_putBytes(buffer, 16) ' put an RAM array into
ENC28J60 buffer

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SPI_Ethernet_putConstBytes
Prototype

sub procedure SPI_Ethernet_putConstBytes(const ptr as ^byte, dim n
as byte)

Returns

Nothing.
This is MAC module routine. It stores requested number of const bytes into
ENC28J60 RAM starting from current ENC28J60 write pointer (EWRPT) location.

Description Parameters:



ptr: const buffer containing bytes to be written into ENC28J60 RAM.
n: number of bytes to be written.

Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

const
buffer as byte[17]
...
buffer = "mikroElektronika"
...
SPI_Ethernet_putConstBytes(buffer, 16) ' put a const array into
ENC28J60 buffer

SPI_Ethernet_putString
Prototype

sub function SPI_Ethernet_putString(dim ptr as ^byte) as word

Returns

Number of bytes written into ENC28J60 RAM.
This is MAC module routine. It stores whole string (excluding null termination) into
ENC28J60 RAM starting from current ENC28J60 write pointer (EWRPT) location.

Description

Parameters:


ptr: string to be written into ENC28J60 RAM.

Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

dim
buffer as string[16]
...
buffer = "mikroElektronika"
...
SPI_Ethernet_putString(buffer) ' put a RAM string into ENC28J60
buffer

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SPI_Ethernet_putConstString
Prototype

sub function SPI_Ethernet_putConstString(const ptr as ^byte) as
word

Returns

Number of bytes written into ENC28J60 RAM.
This is MAC module routine. It stores whole const string (excluding null termination)
into ENC28J60 RAM starting from current ENC28J60 write pointer (EWRPT) location.

Description Parameters:


ptr: const string to be written into ENC28J60 RAM.

Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

const
buffer as string[16]
...
buffer = "mikroElektronika"
...
SPI_Ethernet_putConstString(buffer) ' put a const string into
ENC28J60 buffer

SPI_Ethernet_getByte

428

Prototype

sub function SPI_Ethernet_getByte() as byte

Returns

Byte read from ENC28J60 RAM.

Description

This is MAC module routine. It fetches a byte from address pointed to by current ENC28J60 read pointer (ERDPT).

Requires

Ethernet module has to be initialized. See Spi_Ethernet_Init.

Example

dim buffer as byte<>
...
buffer = SPI_Ethernet_getByte() ' read a byte from ENC28J60
buffer

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SPI_Ethernet_getBytes
Prototype

sub procedure SPI_Ethernet_getBytes(dim ptr as ^byte, dim addr as
word, dim n as byte)

Returns

Nothing.
This is MAC module routine. It fetches equested number of bytes from
ENC28J60 RAM starting from given address. If value of 0xFFFF is passed as the
address parameter, the reading will start from current ENC28J60 read pointer
(ERDPT) location.

Description

Parameters:




ptr: buffer for storing bytes read from ENC28J60 RAM.
addr: ENC28J60 RAM start address. Valid values: 0..8192.
n: number of bytes to be read.

Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

dim
buffer as byte[16]
...
SPI_Ethernet_getBytes(buffer, 0x100, 16) ' read 16 bytes,
starting from address 0x100

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SPI_Ethernet_UserTCP
Prototype

Returns

sub function SPI_Ethernet_UserTCP(dim remoteHost as ^byte, dim
remotePort as word, dim localPort as word, dim reqLength as word)
as word
 0 - there should not be a reply to the request.
 Length of TCP/HTTP reply data field - otherwise.

This is TCP module routine. It is internally called by the library. The user accesses to the TCP/HTTP request by using some of the SPI_Ethernet_get routines.
The user puts data in the transmit buffer by using some of the SPI_Ethernet_put
routines. The function must return the length in bytes of the TCP/HTTP reply, or
0 if there is nothing to transmit. If there is no need to reply to the TCP/HTTP
requests, just define this function with return(0) as a single statement.
Description

Parameters:





remoteHost : client's IP address.
remotePort : client's TCP port.
localPort : port to which the request is sent.
reqLength : TCP/HTTP request data field length.

Note: The function source code is provided with appropriate example projects.
The code should be adjusted by the user to achieve desired reply.

430

Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

This function is internally called by the library and should not be called by the
user's code.

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SPI_Ethernet_UserUDP
Prototype

Returns

sub function SPI_Ethernet_UserUDP(dim remoteHost as ^byte, dim
remotePort as word, dim destPort as word, dim reqLength as word)
as word



0 - there should not be a reply to the request.
Length of UDP reply data field - otherwise.

This is UDP module routine. It is internally called by the library. The user
accesses to the UDP request by using some of the SPI_Ethernet_get routines.
The user puts data in the transmit buffer by using some of the
SPI_Ethernet_put routines. The function must return the length in bytes of the
UDP reply, or 0 if nothing to transmit. If you don't need to reply to the UDP
requests, just define this function with a return(0) as single statement.
Description

Parameters:





remoteHost : client's IP address.
remotePort : client's port.
destPort : port to which the request is sent.
reqLength : UDP request data field length.

Note: The function source code is provided with appropriate example projects.
The code should be adjusted by the user to achieve desired reply.
Requires

Ethernet module has to be initialized. See SPI_Ethernet_Init.

Example

This function is internally called by the library and should not be called by the
user's code.

Library Example
This code shows how to use the PIC mini Ethernet library :
 the board will reply to ARP & ICMP echo requests
 the board will reply to UDP requests on any port : returns the request in upper char with
a header made of remote host IP & port number
 the board will reply to HTTP requests on port 80, GET method with path names
/ will return the HTML main page
/s will return board status as text string
/t0 ... /t7 will toggle P3.b0 to P3.b7 bit and return HTML main page
all other requests return also HTML main page.
Main program code:

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program enc_ethernet
' ***********************************
' * RAM variables
' *
dim myMacAddr as byte[6]
' my MAC address
myIpAddr as byte[4]
' my IP address
' mE ehternet NIC pinout
SPI_Ethernet_Rst as sbit at RC0_bit
SPI_Ethernet_CS as sbit at RC1_bit
SPI_Ethernet_Rst_Direction as sbit at TRISC0_bit
SPI_Ethernet_CS_Direction as sbit at TRISC1_bit
' end ethernet NIC definitions

' ************************************************************
' * ROM constant strings
' *
const httpHeader as string[31] = "HTTP/1.1 200 OK"+chr(10)+"Contenttype: " ' HTTP header
const httpMimeTypeHTML as string[13] = "text/html"+chr(10)+chr(10)
' HTML MIME type
const httpMimeTypeScript as string[14] = "text/plain"+chr(10)+chr(10)
' TEXT MIME type
const httpMethod as string[5]
= "GET /"
' *
' * web page, splited into 2 parts :
' * when coming short of ROM, fragmented data is handled more efficiently by linker
' *
' * this HTML page calls the boards to get its status, and builds
itself with javascript
' *
const indexPage as string[763] =
"" +
""+
"
PIC + ENC28J60 Mini Web Server
"+
"Reload"+
""+
"
 "+
""+
""
const indexPage2 as string[470] =
"
ADC
"+
" "+
""+
""+
"
PORTD
"+
"This is HTTP request #"
dim

getRequest
dyna
httpCounter
tmp

as
as
as
as

byte[15]
byte[30]
word
string[11]

' HTTP request buffer
' buffer for dynamic response
' counter of HTTP requests

' *******************************************
' * user defined sub functions
' *
' *
' * this sub function is called by the library
' * the user accesses to the HTTP request by successive calls to
SPI_Ethernet_getByte()
' * the user puts data in the transmit buffer by successive calls to
SPI_Ethernet_putByte()

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' * the sub function must return the length in bytes of the HTTP
reply, or 0 if nothing to transmit
' *
' * if you don"t need to reply to HTTP requests,
' * just define this sub function with a return(0) as single statement
' *
' *

sub function Spi_Ethernet_UserTCP(dim byref remoteHost as byte[4],
dim remotePort, localPort, reqLength
as word) as word
dim
i
as word
' general purpose integer
bitMask as byte
' for bit mask
result = 0
if(localPort <> 80) then ' I listen only to web request on port 80
result = 0
exit
end if
' get 10 first bytes only of the request, the rest does not matter here
for i = 0 to 10
getRequest[i] = Spi_Ethernet_getByte()
next i
getRequest[i] = 0
' copy httpMethod to ram for use in memcmp routine
for i = 0 to 4
tmp[i] = httpMethod[i]
next i
if(memcmp(@getRequest, @tmp, 5) <> 0) then
supported here
result = 0
exit
end if
Inc(httpCounter)

' only GET method is

' one more request done

if(getRequest[5] = "s") then
' if request path name starts
with s, store dynamic data in transmit buffer
' the text string replied by this request can be interpreted
as javascript statements
' by browsers

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result
=
SPI_Ethernet_putConstString(@httpHeader)
' HTTP header
result=result
+
SPI_Ethernet_putConstString(@httpMimeType
Script) ' with text MIME type
' add AN2 value to reply
WordToStr(ADC_Read(2), dyna)
tmp = "var AN2="
result = result + SPI_Ethernet_putString(@tmp)
result = result + SPI_Ethernet_putString(@dyna)
tmp = ";"
result = result + SPI_Ethernet_putString(@tmp)
' add AN3 value to reply
WordToStr(ADC_Read(3), dyna)
tmp = "var AN3="
result = result + SPI_Ethernet_putString(@tmp)
result = result + SPI_Ethernet_putString(@dyna)
tmp = ";"
result = result + SPI_Ethernet_putString(@tmp)
' add PORTB value (buttons) to reply
tmp = "var PORTB= "
result = result + SPI_Ethernet_putString(@tmp)
WordToStr(PORTB, dyna)
result = result + SPI_Ethernet_putString(@dyna)
tmp = ";"
result = result + SPI_Ethernet_putString(@tmp)
' add PORTD value (LEDs) to reply
tmp = "var PORTD= "
result = result + SPI_Ethernet_putString(@tmp)
WordToStr(PORTD, dyna)
result = result + SPI_Ethernet_putString(@dyna)
tmp = ";"
result = result + SPI_Ethernet_putString(@tmp)
' add HTTP requests counter to reply
WordToStr(httpCounter, dyna)
tmp = "var REQ=
"
result = result + SPI_Ethernet_putString(@tmp)
result = result + SPI_Ethernet_putString(@dyna)
tmp = ";"
result = result + SPI_Ethernet_putString(@tmp)
else
if(getRequest[5] = "t") then
' if request path name starts with
t, toggle PORTD (LED) bit number that comes after
bitMask = 0
if(isdigit(getRequest[6]) <> 0) then
' if 0 <= bit number <=

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9, bits 8 & 9 does not exist but does not matter
bitMask = getRequest[6] - "0"
' convert ASCII to integer
bitMask = 1 << bitMask
' create bit mask
PORTD
= PORTD xor bitMask
' toggle PORTD with xor
operator
end if
end if
end if
if(result = 0) then ' what do to by default
result = SPI_Ethernet_putConstString(@httpHeader) ' HTTP header
result = result + SPI_Ethernet_putConstString(@httpMimeTypeHTML)
' with HTML MIME type
result = result + SPI_Ethernet_putConstString(@indexPage)
' HTML page first part
result = result + SPI_Ethernet_putConstString(@indexPage2)
' HTML page second part
end if
' return to the library with the number of bytes to transmit
end sub
' *
' *
this code shows how to use the Spi_Ethernet mini library :
' *
the board will reply to ARP & ICMP echo requests
' *
the board will reply to UDP requests on any port :
' *
returns the request in upper char with a header
made of remote host IP & port number
' *
the board will reply to HTTP requests on port 80, GET
method with pathnames :
' *
/
will return the HTML main page
' *
/s
will return board status as text
string
' *
/t0 ... /t7
will toggle RD0 to RD7 bit
and return HTML main page
' *
all other requests return also HTML main
page
' *
sub function Spi_Ethernet_UserUDP(dim byref remoteHost as byte[4],
dim remotePort, destPort, reqLength
as word) as word
result = 0
' reply is made of the remote host IP address in human readable
format
byteToStr(remoteHost[0], dyna) ' first IP address byte
dyna[3] = "."
byteToStr(remoteHost[1], tmp)
' second
dyna[4] = tmp[0]
dyna[5] = tmp[1]
dyna[6] = tmp[2]
dyna[7] = ". "

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byteToStr(remoteHost[2], tmp)
dyna[8] = tmp[0]
dyna[9] = tmp[1]
dyna[10] = tmp[2]
dyna[11] = "."
byteToStr(remoteHost[3], tmp)
dyna[12] = tmp[0]
dyna[13] = tmp[1]
dyna[14] = tmp[2]
dyna[15] = ":"

' second

' second

' add separator

' then remote host port number
WordToStr(remotePort, tmp)
dyna[16] = tmp[0]
dyna[17] = tmp[1]
dyna[18] = tmp[2]
dyna[19] = tmp[3]
dyna[20] = tmp[4]
dyna[21] = "["
WordToStr(destPort, tmp)
dyna[22] = tmp[0]
dyna[23] = tmp[1]
dyna[24] = tmp[2]
dyna[25] = tmp[3]
dyna[26] = tmp[4]
dyna[27] = "]"
dyna[28] = 0
' the total length of the request is the length of the dynamic
string plus the text of the request
result = 28 + reqLength
' puts the dynamic string into the transmit buffer
SPI_Ethernet_putBytes(@dyna, 28)
' then puts the request string converted into upper char into the
transmit buffer
while(reqLength <> 0)
SPI_Ethernet_putByte(SPI_Ethernet_getByte())
reqLength = reqLength - 1
wend
' back to the library with the length of the UDP reply
end sub
main:
ANSEL = 0x0C
' AN2 and AN3 convertors will be used
PORTA = 0
TRISA = 0xff
' set PORTA as input for ADC
ANSELH = 0

' Configure other AN pins as digital I/O

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PORTB
TRISB

= 0
= 0xff

PORTD = 0
TRISD = 0

' set PORTB as input for buttons

' set PORTD as output

httpCounter = 0
' set mac address
myMacAddr[0] = 0x00
myMacAddr[1] = 0x14
myMacAddr[2] = 0xA5
myMacAddr[3] = 0x76
myMacAddr[4] = 0x19
myMacAddr[5] = 0x3F
' set IP address
myIpAddr[0] = 192
myIpAddr[1] = 168
myIpAddr[2] = 20
myIpAddr[3] = 60
'
'
'
'
'
'
'

*
*
*
*
*
*
*

starts ENC28J60 with :
reset bit on PORTC.B0
CS bit on PORTC.B1
my MAC & IP address
full duplex

SPI1_Init() ' init spi module
SPI_Ethernet_Init(myMacAddr,
myIpAddr,
_SPI_Ethernet_FULLDUPLEX)
' init ethernet module
SPI_Ethernet_setUserHandlers(@SPI_Ethernet_UserTCP,
@SPI_Ethernet_UserUDP) ' set user handlers
while TRUE
SPI_Ethernet_doPacket()
'
'
'
'
'

' endless loop
' process incoming Ethernet packets

*
* add your stuff here if needed
* SPI_Ethernet_doPacket() must be called as often as possible
* otherwise packets could be lost
*

wend
end.

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HW Connection

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SPI GRAPHIC LCD LIBRARY

The mikroBasic PRO for PIC provides a library for operating Graphic Lcd 128x64
(with commonly used Samsung KS108/KS107 controller) via SPI interface.
For creating a custom set of Glcd images use Glcd Bitmap Editor Tool.
Note: The library uses the SPI module for communication. User must initialize SPI
module before using the SPI Graphic Lcd Library.
For MCUs with two SPI modules it is possible to initialize both of them and then
switch by using the SPI_Set_Active() routine.
Note: This Library is designed to work with the mikroElektronika's Serial Lcd/Glcd
Adapter Board pinout, see schematic at the bottom of this page for details.

External dependencies of SPI Graphic LCD Library
The implementation of SPI Graphic LCD Library routines is based on Port Expander
Library routines.
External dependencies are the same as Port Expander Library external dependencies.

Library Routines
Basic routines:
 SPI_Glcd_Init
 SPI_Glcd_Set_Side
 SPI_Glcd_Set_Page
 SPI_Glcd_Set_X
 SPI_Glcd_Read_Data
 SPI_Glcd_Write_Data
Advanced routines:













440

SPI_Glcd_Fill
SPI_Glcd_Dot
SPI_Glcd_Line
SPI_Glcd_V_Line
SPI_Glcd_H_Line
SPI_Glcd_Rectangle
SPI_Glcd_Box
SPI_Glcd_Circle
SPI_Glcd_Set_Font
SPI_Glcd_Write_Char
SPI_Glcd_Write_Text
SPI_Glcd_Image

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SPI_Glcd_Init
Prototype

sub procedure SPI_Glcd_Init(dim DeviceAddress as byte)

Returns

Nothing.
Initializes the Glcd module via SPI interface.

Description

Parameters :


DeviceAddress: SPI expander hardware address, see schematic at

the bottom of this page
Global variables :

Requires






SPExpanderCS: Chip Select line
SPExpanderRST: Reset line
SPExpanderCS_Direction: Direction of the Chip Select pin
SPExpanderRST_Direction: Direction of the Reset pin

must be defined before using this function.
SPI module needs to be initialized. See SPI1_Init and SPI1_Init_Advanced routines.

Example

' port expander pinout definition
dim SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' end of port expander pinout definition
...
' If Port Expander Library uses SPI1 module :
SPI1_Init() ' Initialize SPI module used with PortExpander
SPI_Glcd_Init(0)

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SPI_Glcd_Set_Side
Prototype

sub procedure SPI_Glcd_Set_Side(dim x_pos as byte)

Returns

Nothing.
Selects Glcd side. Refer to the Glcd datasheet for detail explanation.
Parameters :


x_pos: position on x-axis. Valid values: 0..127

Description
The parameter x_pos specifies the Glcd side: values from 0 to 63 specify the
left side, values from 64 to 127 specify the right side.
Note: For side, x axis and page layout explanation see schematic at the bottom
of this page.
Requires

Glcd needs to be initialized for SPI communication, see Spi_Glcd_Init routines.
The following two lines are equivalent, and both of them select the left side of Glcd:

Example

SPI_Glcd_Set_Side(0);
SPI_Glcd_Set_Side(10);

SPI_Glcd_Set_Page
Prototype

procedure Spi_Glcd_Set_Page(page : byte);

Returns

Nothing.
Selects page of Glcd.
Parameters :

Description



page: page number. Valid values: 0..7

Note: For side, x axis and page layout explanation see schematic at the bottom
of this page.

442

Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

SPI_Glcd_Set_Page(5)

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SPI_Glcd_Set_X
Prototype

sub procedure SPI_Glcd_Set_X(dim x_pos as byte)

Returns

Nothing.
Sets x-axis position to x_pos dots from the left border of Glcd within the selected side.
Parameters :

Description


x_pos: position on x-axis. Valid values: 0..63

Note: For side, x axis and page layout explanation see schematic at the bottom
of this page.
Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

SPI_Glcd_Set_X(25)

SPI_Glcd_Read_Data
Prototype

sub function SPI_Glcd_Read_Data() as byte

Returns

One byte from Glcd memory.

Description

Reads data from the current location of Glcd memory and moves to the next
location.
Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Requires

Example

Glcd side, x-axis position and page should be set first. See the functions
SPI_Glcd_Set_Side, SPI_Glcd_Set_X, and SPI_Glcd_Set_Page.
dim data as byte
...
data = SPI_Glcd_Read_Data()

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SPI_Glcd_Write_Data
Prototype

sub procedure SPI_Glcd_Write_Data(dim Ddata as byte)

Returns

Nothing.
Writes one byte to the current location in Glcd memory and moves to the next
location.

Description

Parameters :


Ddata: data to be written

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.
Requires

Example

Glcd side, x-axis position and page should be set first. See the functions
SPI_Glcd_Set_Side, SPI_Glcd_Set_X, and SPI_Glcd_Set_Page.
dim ddata as byte
...
SPI_Glcd_Write_Data(ddata)

SPI_Glcd_Fill
Prototype

sub procedure SPI_Glcd_Fill(dim pattern as byte)

Returns

Nothing.
Fills Glcd memory with byte pattern.
Parameters :

Description



pattern: byte to fill Glcd memory with

To clear the Glcd screen, use SPI_Glcd_Fill(0).
To fill the screen completely, use SPI_Glcd_Fill(0xFF).

444

Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

' Clear screen
SPI_Glcd_Fill(0)

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SPI_Glcd_Dot
Prototype

sub procedure SPI_Glcd_Dot(dim x_pos as byte, dim y_pos as byte,
dim color as byte)

Returns

Nothing.
Draws a dot on Glcd at coordinates (x_pos, y_pos).
Parameters :




Description

x_pos: x position. Valid values: 0..127
y_pos: y position. Valid values: 0..63
color: color parameter. Valid values: 0..2

The parameter color determines the dot state: 0 clears dot, 1 puts a dot, and 2
inverts dot state.
Note: For x and y axis layout explanation see schematic at the bottom of this page.
Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

‘Invert the dot in the upper left corner
SPI_Glcd_Dot(0, 0, 2)

SPI_Glcd_Line
Prototype

sub procedure SPI_Glcd_Line(dim x_start as integer, dim y_start
as integer, dim x_end as integer, dim y_end as integer, dim color
as byte)

Returns

Nothing.
Draws a line on Glcd.
Parameters :

Description







x_start: x coordinate of the line start. Valid values: 0..127
y_start: y coordinate of the line start. Valid values: 0..63
x_end: x coordinate of the line end. Valid values: 0..127
y_end: y coordinate of the line end. Valid values: 0..63
color: color parameter. Valid values: 0..2

Parameter color determines the line color: 0 white, 1 black, and 2 inverts each dot.
Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

' Draw a line between dots (0,0) and (20,30)
SPI_Glcd_Line(0, 0, 20, 30, 1)

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SPI_Glcd_V_Line
Prototype

sub procedure SPI_Glcd_V_Line(dim y_start as byte, dim y_end as
byte, dim x_pos as byte, dim color as byte)

Returns

Nothing.
Draws a vertical line on Glcd.
Parameters :

Description






y_start: y coordinate of the line start. Valid values: 0..63
y_end: y coordinate of the line end. Valid values: 0..63
x_pos: x coordinate of vertical line. Valid values: 0..127
color: color parameter. Valid values: 0..2

Parameter color determines the line color: 0 white, 1 black, and 2 inverts each
dot.
Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

' Draw a vertical line between dots (10,5) and (10,25)
SPI_Glcd_V_Line(5, 25, 10, 1)

SPI_Glcd_H_Line
Prototype

sub procedure SPI_Glcd_V_Line(dim x_start as byte, dim x_end as
byte, dim y_pos as byte, dim color as byte)

Returns

Nothing.
Draws a horizontal line on Glcd.
Parameters :

Description






x_start: x coordinate of the line start. Valid values: 0..127
x_end: x coordinate of the line end. Valid values: 0..127
y_pos: y coordinate of horizontal line. Valid values: 0..63
color: color parameter. Valid values: 0..2

The parameter color determines the line color: 0 white, 1 black, and 2 inverts
each dot.

446

Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

‘Draw a horizontal line between dots (10,20) and (50,20)
SPI_Glcd_H_Line(10, 50, 20, 1)

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SPI_Glcd_Rectangle
Prototype

sub procedure SPI_Glcd_Rectangle(dim x_upper_left as byte, dim
y_upper_left as byte, dim x_bottom_right as byte, dim y_bottom_right
as byte, dim color as byte)

Returns

Nothing.
Draws a rectangle on Glcd.
Parameters :


x_upper_left: x coordinate of the upper left rectangle corner. Valid values:



y_upper_left: y coordinate of the upper left rectangle corner. Valid values:



x_bottom_right: x coordinate of the lower right rectangle corner. Valid val

0..127
Description

0..63
ues: 0..127
 y_bottom_right: y coordinate of the lower right rectangle corner. Valid values:

0..63


color: color parameter. Valid values: 0..2

The parameter color determines the color of the rectangle border: 0 white, 1 black,
and 2 inverts each dot.
Requires

Glcd needs to be initialized for SPI communication, see S_Glcd_Init routines.

Example

' Draw a rectangle between dots (5,5) and (40,40)
SPI_Glcd_Rectangle(5, 5, 40, 40, 1)

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SPI_Glcd_Box
Prototype

sub procedure SPI_Glcd_Box(dim x_upper_left as byte, dim
y_upper_left as byte, dim x_bottom_right as byte, dim
y_bottom_right as byte, dim color as byte)

Returns

Nothing.
Draws a box on Glcd.
Parameters :


x_upper_left: x coordinate of the upper left box corner. Valid values:

0..127


y_upper_left: y coordinate of the upper left box corner. Valid values:



x_bottom_right: x coordinate of the lower right box corner. Valid values:



y_bottom_right: y coordinate of the lower right box corner. Valid values:

0..63
Description

0..127
0..63


color: color parameter. Valid values: 0..2
The parameter color determines the color of the box fill: 0 white, 1 black, and
2 inverts each dot.

Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

' Draw a box between dots (5,15) and (20,40)
SPI_Glcd_Box(5, 15, 20, 40, 1)

SPI_Glcd_Circle
Prototype

sub procedure SPI_Glcd_Circle(dim x_center as integer, dim y_center as integer, dim radius as integer, dim color as byte)

Returns

Nothing.
Draws a circle on Glcd.
Parameters :

Description






x_center: x coordinate of the circle center. Valid values: 0..127
y_center: y coordinate of the circle center. Valid values: 0..63
radius: radius size
color: color parameter. Valid values: 0..2

The parameter color determines the color of the circle line: 0 white, 1 black,
and 2 inverts each dot.

448

Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routine.

Example

' Draw a circle with center in (50,50) and radius=10
SPI_Glcd_Circle(50, 50, 10, 1)

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SPI_Glcd_Set_Font
Prototype

sub procedure SPI_Glcd_Set_Font(dim activeFont as longint, dim
aFontWidth as byte, dim aFontHeight as byte, dim aFontOffs as
word)

Returns

Nothing.
Sets font that will be used with SPI_Glcd_Write_Char and SPI_Glcd_Write_Text
routines.
Parameters :

Description






activeFont: font to be set. Needs to be formatted as an array of char
aFontWidth: width of the font characters in dots.
aFontHeight: height of the font characters in dots.
aFontOffs: number that represents difference between the mikroBasic

PRO for PIC character set and regular ASCII set (eg. if 'A' is 65 in ASCII
character, and 'A' is 45 in the mikroBasic PRO for PIC character set,
aFontOffs is 20). Demo fonts supplied with the library have an offset of
32, which means that they start with space.
The user can use fonts given in the file “__Lib_Glcd_fonts.mbas” file located in
the Uses folder or create his own fonts.
Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

' Use the custom 5x7 font "myfont" which starts with space (32):
SPI_Glcd_Set_Font(@myfont, 5, 7, 32)

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SPI_Glcd_Write_Char
Prototype

sub procedure SPI_Glcd_Write_Char(dim chr1 as byte, dim x_pos as
byte, dim page_num as byte, dim color as byte)

Returns

Nothing.
Prints character on Glcd.
Parameters :



chr1: character to be written
x_pos: character starting position on x-axis. Valid values: 0..(127-Fon-

tWidth)
Description

 page_num: the number of the page on which character will be written. Valid

values: 0..7


color: color parameter. Valid values: 0..2

The parameter color determines the color of the character: 0 white, 1 black, and
2 inverts each dot.
Note: For x axis and page layout explanation see schematic at the bottom of
this page.
Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.
Requires

Example

450

Use the SPI_Glcd_Set_Font to specify the font for display; if no font is specified, then
the default 5x8 font supplied with the library will be used.
' Write character 'C' on the position 10 inside the page 2:
SPI_Glcd_Write_Char("C", 10, 2, 1)

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SPI_Glcd_Write_Text
Prototype

sub procedure SPI_Glcd_Write_Text(dim byref text as string[40],
dim x_pos as byte, dim page_numb as byte, dim color as byte)

Returns

Nothing.
Prints text on Glcd.
Parameters :




text: text to be written
x_pos: text starting position on x-axis.
page_num: the number of the page on which text will be written. Valid values:



color: color parameter. Valid values: 0..2

Description

0..7

The parameter color determines the color of the text: 0 white, 1 black, and 2
inverts each dot.
Note: For x axis and page layout explanation see schematic at the bottom of
this page.
Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.
Requires

Example

Use the SPI_Glcd_Set_Font to specify the font for display; if no font is specified, then the default 5x8 font supplied with the library will be used.
' Write text "Hello world!" on the position 10 inside the page 2:
SPI_Glcd_Write_Text("Hello world!", 10, 2, 1)

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SPI_Glcd_Image
Prototype

sub procedure SPI_Glcd_Image(dim const image as ^byte)

Returns

Nothing.
Displays bitmap on Glcd.
Parameters :


Description

image: image to be displayed. Bitmap array can be located in both code

and RAM memory (due to the mikroBasic PRO for PIC pointer to const
and pointer to RAM equivalency).
Use the mikroBasic PRO’s integrated Glcd Bitmap Editor (menu option Tools ›
Glcd Bitmap Editor) to convert image to a constant array suitable for displaying on Glcd.

Requires

Glcd needs to be initialized for SPI communication, see SPI_Glcd_Init routines.

Example

' Draw image my_image on Glcd
SPI_Glcd_Image(my_image)

Library Example
The example demonstrates how to communicate to KS0108 Glcd via the SPI module, using serial to parallel convertor MCP23S17.
program SPI_Glcd
include bitmap
' Port Expander module connections
dim SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' End Port Expander module connections
dim someText as char[20]
counter as byte
sub procedure Delay2S
delay_ms(2000)
end sub
main:
SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV4,_SPI_DATA_SAMPLE_MIDDLE,
_SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH) ' Initialize SPI module

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used with PortExpander
SPI_Glcd_Init(0)
SPI_Glcd_Fill(0x00)
while TRUE
SPI_Glcd_Image(@truck_bmp)
Delay2s() Delay2s()
SPI_Glcd_Fill(0x00)
Delay2s

Libraries
' Initialize Glcd via SPI
' Clear Glcd

' Draw image

' Clear Glcd

SPI_Glcd_Box(62,40,124,56,1)
' Draw box
SPI_Glcd_Rectangle(5,5,84,35,1)
' Draw rectangle
SPI_Glcd_Line(0, 63, 127, 0,1)
' Draw line
Delay2s()
counter = 5
while (counter < 60)
' Draw horizontal and vertical line
Delay_ms(250)
SPI_Glcd_V_Line(2, 54, counter, 1)
SPI_Glcd_H_Line(2, 120, counter, 1)
counter = counter + 5
wend
Delay2s()
SPI_Glcd_Fill(0x00)
SPI_Glcd_Set_Font(@Character8x7, 8, 8, 32)
SPI_Glcd_Write_Text("mikroE", 5, 7, 2)

' Clear Glcd
' Choose font
' Write string

for counter = 1 to 10 ' Draw circles
SPI_Glcd_Circle(63,32, 3*counter, 1)
next counter
Delay2s()
SPI_Glcd_Box(12,20, 70,63, 2)
Delay2s()

' Draw box

SPI_Glcd_Fill(0xFF)

' Fill Glcd

SPI_Glcd_Set_Font(@Character8x7, 8, 7, 32)
someText = "8x7 Font"
SPI_Glcd_Write_Text(someText, 5, 1, 2)
Delay2s()

' Change font

SPI_Glcd_Set_Font(@System3x6, 3, 5, 32)
someText = "3X5 CAPITALS ONLY"
SPI_Glcd_Write_Text(someText, 5, 3, 2)
Delay2s()

' Change font

SPI_Glcd_Set_Font(@font5x7, 5, 7, 32)
someText = "5x7 Font"
SPI_Glcd_Write_Text(someText, 5, 5, 2)
Delay2s()
wend
end.

' Write string

' Write string

' Change font
' Write string

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HW Connection

SPI GLCD HW connection

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SPI LCD LIBRARY
The mikroBasic PRO for PIC provides a library for communication with Lcd (with
HD44780 compliant controllers) in 4-bit mode via SPI interface.
For creating a custom set of Lcd characters use Lcd Custom Character Tool.
Note: The library uses the SPI module for communication. The user must initialize
the SPI module before using the SPI Lcd Library.
For MCUs with two SPI modules it is possible to initialize both of them and then
switch by using the SPI_Set_Active() routine.
Note: This Library is designed to work with the mikroElektronika's Serial Lcd
Adapter Board pinout. See schematic at the bottom of this page for details.

External dependencies of SPI LCD Library
The implementation of SPI LCD Library routines is based on Port Expander Library
routines.
External dependencies are the same as Port Expander Library external dependencies.

Library Routines







Spi_Lcd_Config
Spi_Lcd_Out
Spi_Lcd_Out_Cp
Spi_Lcd_Chr
Spi_Lcd_Chr_Cp
Spi_Lcd_Cmd

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SPI_Lcd_Config
Prototype

sub procedure SPI_Lcd_Config(dim DeviceAddress as byte)

Returns

Nothing.
Initializes the Lcd module via SPI interface.

Description

Parameters :


DeviceAddress: SPI expander hardware address, see schematic at the

bottom of this page
Global variables :





Requires

Example

SPExpanderCS: Chip Select line
SPExpanderRST: Reset line
SPExpanderCS_Direction: Direction of the Chip Select pin
SPExpanderRST_Direction: Direction of the Reset pin

' port expander pinout definition
dim SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' end of port expander pinout definition
...
' If Port Expander Library uses SPI1 module
SPI1_Init()
' Initialize SPI module used with POrtExpander
SPI_Lcd_Config(0) ' initialize lcd over spi interface

SPI_Lcd_Out
Prototype

sub procedure SPI_Lcd_Out(dim row as byte, dim column as byte,
dim byref text as string[20])

Returns

Nothing.
Prints text on the Lcd starting from specified position. Both string variables and
literals can be passed as a text.

Description

Parameters:




456

row: starting position row number
column: starting position column number
text: text to be written

Requires

Lcd needs to be initialized for SPI communication, see SPI_Lcd_Config routines.

Example

' Write text "Hello!" on Lcd starting from row 1, column 3:
SPI_Lcd_Out(1, 3, "Hello!")

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SPI_Lcd_Out_Cp
Prototype

sub procedure SPI_Lcd_Out_CP(dim text as string[19])

Returns

Nothing.
Prints text on the Lcd at current cursor position. Both string variables and literals can be passed as a text.

Description

Parameters :


text: text to be written

Requires

Lcd needs to be initialized for SPI communication, see SPI_Lcd_Config routines.

Example

‘Write text "Here!" at current cursor position:
SPI_Lcd_Out_CP("Here!")

SPI_Lcd_Chr
Prototype

sub procedure SPI_Lcd_Chr(dim Row as byte, dim Column as byte, dim
Out_Char as byte)

Returns

Nothing.
Prints character on Lcd at specified position. Both variables and literals can be
passed as character.

Description

Parameters :




Row: writing position row number
Column: writing position column number
Out_Char: character to be written

Requires

Lcd needs to be initialized for SPI communication, see SPI_Lcd_Config routines.

Example

' Write character "i" at row 2, column 3:
SPI_Lcd_Chr(2, 3, 'i')

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SPI_Lcd_Chr_Cp
Prototype

sub procedure SPI_Lcd_Chr_CP(dim Out_Char as byte)

Returns

Nothing.
Prints character on Lcd at current cursor position. Both variables and literals
can be passed as character.

Description

Parameters :


Out_Char: character to be written

Requires

Lcd needs to be initialized for SPI communication, see SPI_Lcd_Config routines.

Example

' Write character "e" at current cursor position:
SPI_Lcd_Chr_Cp('e')

SPI_Lcd_Cmd
Prototype

sub procedure SPI_Lcd_Cmd(dim out_char as byte)

Returns

Nothing.
Sends command to Lcd.
Parameters :

Description



out_char: command to be sent

Note: Predefined constants can be passed to the function, see Available SPI
Lcd Commands.

458

Requires

Lcd needs to be initialized for SPI communication, see SPI_Lcd_Config routines.

Example

' Clear Lcd display:
SPI_Lcd_Cmd(_LCD_CLEAR)

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Available LCD Commands
Lcd Command

Purpose

_LCD_FIRST_ROW

Move cursor to the 1st row

_LCD_SECOND_ROW

Move cursor to the 2nd row

_LCD_THIRD_ROW

Move cursor to the 3rd row

_LCD_FOURTH_ROW

Move cursor to the 4th row

_LCD_CLEAR

Clear display

_LCD_RETURN_HOME

Return cursor to home position, returns a shifted display
to its original position. Display data RAM is unaffected.

_LCD_CURSOR_OFF

Turn off cursor

_LCD_UNDERLINE_ON

Underline cursor on

_LCD_BLINK_CURSOR_ON

Blink cursor on

_LCD_MOVE_CURSOR_LEFT

Move cursor left without changing display data RAM

_LCD_MOVE_CURSOR_RIGHT Move cursor right without changing display data RAM
_LCD_TURN_ON

Turn Lcd display on

_LCD_TURN_OFF

Turn Lcd display off

_LCD_SHIFT_LEFT

Shift display left without changing display data RAM

_LCD_SHIFT_RIGHT

Shift display right without changing display data RAM

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Library Example

This example demonstrates how to communicate Lcd via the SPI module, using
serial to parallel convertor MCP23S17.
program SPI_Lcd
dim text as char[17]
' Port Expander module connections
dim SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' End Port Expander module connections
main:
text = "mikroElektronika"
SPI1_Init()
PortExpander
SPI_Lcd_Config(0)
face
SPI_Lcd_Cmd(_LCD_CLEAR)
SPI_Lcd_Cmd(_LCD_CURSOR_OFF)
SPI_Lcd_Out(1,6, "mikroE")
6th column
SPI_Lcd_Chr_CP("!")
SPI_Lcd_Out(2,1, text)
column
end.

460

' Initialize SPI module used with
' Initialize Lcd over SPI inter' Clear display
' Turn cursor off
' Print text to Lcd, 1st row,
' Append "!"
' Print text to Lcd, 2nd row, 1st

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SPI LCD HW connection

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SPI LCD8 (8-BIT INTERFACE) LIBRARY

The mikroBasic PRO for PIC provides a library for communication with Lcd (with
HD44780 compliant controllers) in 8-bit mode via SPI interface.
For creating a custom set of Lcd characters use Lcd Custom Character Tool.
Note: Library uses the SPI module for communication. The user must initialize the
SPI module before using the SPI Lcd Library.
For MCUs with two SPI modules it is possible to initialize both of them and then
switch by using the SPI_Set_Active() routine.
Note: This Library is designed to work with mikroElektronika's Serial Lcd/GLcd
Adapter Board pinout, see schematic at the bottom of this page for details.

External dependencies of SPI LCD Library
The implementation of SPI Lcd Library routines is based on Port Expander Library
routines.
External dependencies are the same as Port Expander Library external dependencies.

Library Routines







462

SPI_Lcd8_Config
SPI_Lcd8_Out
SPI_Lcd8_Out_Cp
SPI_Lcd8_Chr
SPI_Lcd8_Chr_Cp
SPI_Lcd8_Cmd

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SPI_Lcd8_Config
Prototype

sub procedure SPI_Lcd8_Config(dim DeviceAddress as byte)

Returns

Nothing.
Initializes the Lcd module via SPI interface.
Parameters :

Description
 DeviceAddress: spi expander hardware address, see schematic at the bot

tom of this page
Global variables :





Requires

SPExpanderCS: Chip Select line
SPExpanderRST: Reset line
SPExpanderCS_Direction: Direction of the Chip Select pin
SPExpanderRST_Direction: Direction of the Reset pin

must be defined before using this function.
SPI module needs to be initialized. See SPI1_Init and SPI1_Init_Advanced routines.

Example

' port expander pinout definition
dim SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' end of port expander pinout definition
...
SPI1_Init()
' Initialize SPI interface
SPI_Lcd8_Config(0)
' Intialize Lcd in 8bit mode via spi

SPI_Lcd8_Out
Prototype

sub procedure SPI_Lcd8_Out(dim row as byte, dim column as byte,
dim byref text as string[19])

Returns

Nothing.
Prints text on Lcd starting from specified position. Both string variables and literals can be passed as a text.

Description

Parameters :




row: starting position row number
column: starting position column number
text: text to be written

Requires

Lcd needs to be initialized for SPI communication, see SPI_Lcd8_Config routines

Example

' Write text "Hello!" on Lcd starting from row 1, column 3:
SPI_Lcd8_Out(1, 3, "Hello!")

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SPI_Lcd8_Out_Cp
Prototype

sub procedure SPI_Lcd8_Out_CP(dim text as string[19])

Returns

Nothing.
Prints text on Lcd at current cursor position. Both string variables and literals
can be passed as a text.

Description

Parameters :


text: text to be written

Requires

Lcd needs to be initialized for SPI communication, see SPI_Lcd8_Config routines.

Example

' Write text "Here!" at current cursor position:
SPI_Lcd8_Out_CP("Here!")

SPI_Lcd8_Chr
Prototype

sub procedure SPI_Lcd8_Chr(dim Row as byte, dim Column as byte, dim
Out_Char as byte)

Returns

Nothing.
Prints character on LCD at specified position. Both variables and literals can be
passed as character.

Description

Parameters :




464

row: writing position row number
column: writing position column number
out_char: character to be written

Requires

LCD needs to be initialized for SPI communication, see SPI_Lcd8_Config routines.

Example

' Write character "i" at row 2, column 3:
SPI_Lcd8_Chr(2, 3, 'i')

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SPI_Lcd8_Chr_Cp
Prototype

sub procedure SPI_Lcd8_Chr_CP(dim Out_Char as byte)

Returns

Nothing.
Prints character on Lcd at current cursor position. Both variables and literals
can be passed as character.

Description

Parameters :


Requires

out_char: character to be written

Lcd needs to be initialized for SPI communication, see SPI_Lcd8_Config routines.
Print “e” at current cursor position:

Example

' Write character "e" at current cursor position:
SPI_Lcd8_Chr_Cp('e')

SPI_Lcd8_Cmd
Prototype

sub procedure SPI_Lcd8_Cmd(dim out_char as byte)

Returns

Nothing.
Sends command to Lcd.
Parameters :

Description



out_char: command to be sent

Note: Predefined constants can be passed to the function, see Available SPI
Lcd8 Commands.
Requires

Lcd needs to be initialized for SPI communication, see SPI_Lcd8_Config routines.

Example

' Clear Lcd display:
SPI_Lcd8_Cmd(_LCD_CLEAR)

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Available LCD Commands
Lcd Command

Purpose

_LCD_FIRST_ROW

Move cursor to the 1st row

_LCD_SECOND_ROW

Move cursor to the 2nd row

_LCD_THIRD_ROW

Move cursor to the 3rd row

_LCD_FOURTH_ROW

Move cursor to the 4th row

_LCD_CLEAR

Clear display

_LCD_RETURN_HOME

Return cursor to home position, returns a shifted display
to its original position. Display data RAM is unaffected.

_LCD_CURSOR_OFF

Turn off cursor

_LCD_UNDERLINE_ON

Underline cursor on

_LCD_BLINK_CURSOR_ON

Blink cursor on

_LCD_MOVE_CURSOR_LEFT

Move cursor left without changing display data RAM

_LCD_MOVE_CURSOR_RIGHT Move cursor right without changing display data RAM

466

_LCD_TURN_ON

Turn Lcd display on

_LCD_TURN_OFF

Turn Lcd display off

_LCD_SHIFT_LEFT

Shift display left without changing display data RAM

_LCD_SHIFT_RIGHT

Shift display right without changing display data RAM

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Library Example
This example demonstrates how to communicate Lcd in 8-bit mode via the SPI module, using serial to parallel convertor MCP23S17.
program Spi_Lcd8_Test
dim text as char[16]
' Port Expander module connections
dim SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' End Port Expander module connections
main:
text = "mikroE"
SPI1_Init()
' Initialize SPI module
with PortExpander
SPI_Lcd8_Config(0)
' Intialize Lcd in 8bit
via SPI
SPI_Lcd8_Cmd(_LCD_CLEAR)
' Clear display
SPI_Lcd8_Cmd(_LCD_CURSOR_OFF)
' Turn cursor off
SPI_Lcd8_Out(1,6, text)
' Print text to Lcd, 1st
6th column...
SPI_Lcd8_Chr_CP("!")
' Append "!"
SPI_Lcd8_Out(2,1, "mikroElektronika") ' Print text to Lcd, 2nd
1st column...
SPI_Lcd8_Out(3,1, text)
' For Lcd modules with
than two rows
SPI_Lcd8_Out(4,15, text)
' For Lcd modules with
than two rows
end.

used
mode

row,

row,
more
more

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SPI LCD8 HW connection

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SPI T6963C GRAPHIC LCD LIBRARY
The mikroBasic PRO for PIC provides a library for working with Glcds based on
TOSHIBA T6963C controller via SPI interface. The Toshiba T6963C is a very popular Lcd controller for the use in small graphics modules. It is capable of controlling
displays with a resolution up to 240x128. Because of its low power and small outline it is most suitable for mobile applications such as PDAs, MP3 players or mobile
measurement equipment. Although this controller is small, it has a capability of displaying and merging text and graphics and it manages all interfacing signals to the
displays Row and Column drivers.
For creating a custom set of Glcd images use Glcd Bitmap Editor Tool.
Note: The library uses the SPI module for communication. The user must initialize
SPI module before using the SPI T6963C Glcd Library.
For MCUs with two SPI modules it is possible to initialize both of them and then
switch by using the SPI_Set_Active() routine.
Note: This Library is designed to work with mikroElektronika's Serial Glcd 240x128
and 240x64 Adapter Boards pinout, see schematic at the bottom of this page for
details.
Note: Some mikroElektronika's adapter boards have pinout different from T6369C
datasheets. Appropriate relations between these labels are given in the table below:
Adapter Board T6369C datasheet
RS

C/D

R/W

/RD

E

/WR

External dependencies of SPI T6963C Graphic Lcd Library
The implementation of SPI T6963C Graphic Lcd Library routines is based on Port
Expander Library routines.
External dependencies are the same as Port Expander Library external dependencies.

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Library Routines
































470

SPI_T6963C_Config
SPI_T6963C_WriteData
SPI_T6963C_WriteCommand
SPI_T6963C_SetPtr
SPI_T6963C_WaitReady
SPI_T6963C_Fill
SPI_T6963C_Dot
SPI_T6963C_Write_Char
SPI_T6963C_Write_Text
SPI_T6963C_Line
SPI_T6963C_Rectangle
SPI_T6963C_Box
SPI_T6963C_Circle
SPI_T6963C_Image
SPI_T6963C_Sprite
SPI_T6963C_Set_Cursor
SPI_T6963C_ClearBit
SPI_T6963C_SetBit
SPI_T6963C_NegBit
SPI_T6963C_DisplayGrPanel
SPI_T6963C_DisplayTxtPanel
SPI_T6963C_SetGrPanel
SPI_T6963C_SetTxtPanel
SPI_T6963C_PanelFill
SPI_T6963C_GrFill
SPI_T6963C_TxtFill
SPI_T6963C_Cursor_Height
SPI_T6963C_Graphics
SPI_T6963C_Text
SPI_T6963C_Cursor
SPI_T6963C_Cursor_Blink

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SPI_T6963C_Config
Prototype

sub procedure SPI_T6963C_Config(dim width as word, dim height as
word, dim fntW as word, dim DeviceAddress as byte, dim wr as
byte, dim rd as byte, dim cd as byte, dim rst as byte)

Returns

Nothing.
Initalizes the Graphic Lcd controller.
Parameters :





width: width of the GLCD panel
height: height of the GLCD panel
fntW: font width
DeviceAddress: SPI expander hardware address, see schematic at the






wr: write signal pin on GLCD control port
rd: read signal pin on GLCD control port
cd: command/data signal pin on GLCD control port
rst: reset signal pin on GLCD control port

bottom of this page

Description

Display RAM organization:
The library cuts RAM into panels : a complete panel is one graphics panel followed by a text panel (see schematic below).
schematic:
+--------------------+ GRAPHICS PANEL #0
+
+
+
+--------------------+ TEXT PANEL #0
+
+--------------------+ GRAPHICS PANEL #1
+
+
+
+--------------------+ TEXT PANEL #2
+
+---------------------

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

/\
|
|
|
|
| PANEL 0
|
\/
/\
|
|
|
|
| PANEL 1
|
|
\/

Global variables :
Requires





SPExpanderCS: Chip Select line
SPExpanderRST: Reset line
SPExpanderCS_Direction: Direction of the Chip Select pin

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 SPExpanderRST_Direction: Direction of the Reset pin
must be defined before using this function.

Requires
SPI module needs to be initialized. See SPI1_Init and SPI1_Init_Advanced routines.

Example

' port expander pinout definition
dim SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' end of port expander pinout definition
...
' Initialize SPI module
SPI1_Init()
SPI_T6963C_Config(240, 64, 8, 0, 0, 1, 3, 4)

SPI_T6963C_WriteData
Prototype

sub procedure SPI_T6963C_WriteData(dim Ddata as byte)

Returns

Nothing.
Writes data to T6963C controller via SPI interface.

Description Parameters :


Ddata: data to be written

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_WriteData(AddrL)

SPI_T6963C_WriteCommand
Prototype

sub procedure SPI_T6963C_WriteCommand(dim Ddata as byte)

Returns

Nothing.
Writes command to T6963C controller via SPI interface.

Description Parameters :


472

Ddata: command to be written

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_WriteCommand(SPI_T6963C_CURSOR_POINTER_SET)

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SPI_T6963C_SetPtr
Prototype

sub procedure SPI_T6963C_SetPtr(dim p as word, dim c as byte)

Returns

Nothing.
Sets the memory pointer p for command c.

Description

Parameters :



p: address where command should be written
c: command to be written

Requires

SToshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_SetPtr(T6963C_grHomeAddr + start,T6963C_ADDRESS_POINTER_SET)

SPI_T6963C_WaitReady
Prototype

sub procedure SPI_T6963C_WaitReady()

Returns

Nothing.

Description Pools the status byte, and loops until Toshiba Glcd module is ready.
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_WaitReady()

SPI_T6963C_Fill
Prototype

sub procedure SPI_T6963C_Fill(dim v as byte, dim start as word,
dim len as word)

Returns

Nothing.
Fills controller memory block with given byte.
Parameters :

Description




v: byte to be written
start: starting address of the memory block
len: length of the memory block in bytes

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Fill(0x33, 0x00FF, 0x000F)

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SPI_T6963C_Dot
Prototype

sub procedure SPI_T6963C_Dot(dim x as integer, dim y as integer,
dim color as byte)

Returns

Nothing.
Draws a dot in the current graphic panel of Glcd at coordinates (x, y).
Parameters :

Description





x: dot position on x-axis
y: dot position on y-axis
color: color parameter. Valid values: SPI_T6963C_BLACK and

SPI_T6963C_WHITE

474

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Dot(x0, y0, pcolor)

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SPI_T6963C_Write_Char
Prototype

sub procedure SPI_T6963C_Write_Char(dim c as byte, dim x as byte,
dim y as byte, dim mode as byte)

Returns

Nothing.
Writes a char in the current text panel of Glcd at coordinates (x, y).
Parameters :





c: char to be written
x: char position on x-axis
y: char position on y-axis
mode: mode parameter. Valid values: SPI_T6963C_ROM_MODE_OR,

SPI_T6963C_ROM_MODE_XOR, SPI_T6963C_ROM_MODE_AND
and SPI_T6963C_ROM_MODE_TEXT
Description Mode parameter explanation:
 OR Mode: In the OR-Mode, text and graphics can be displayed and the data
is logically “OR-ed”. This is the most common way of combining text and
graphics for example labels on buttons.
 XOR-Mode: In this mode, the text and graphics data are combined via the
logical “exclusive OR”. This can be useful to display text in negative mode,
i.e. white text on black background.
 AND-Mode: The text and graphic data shown on display are combined via
the logical “AND function”.
 TEXT-Mode: This option is only available when displaying just a text. The
Text Attribute values are stored in the graphic area of display memory.
For more details see the T6963C datasheet.
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Write_Char("A",22,23,AND)

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SPI_T6963C_Write_Text
Prototype

sub procedure SPI_T6963C_Write_Text(dim byref str as byte[10],
dim x as byte, dim y as byte, dim mode as byte)

Returns

Nothing.
Writes text in the current text panel of Glcd at coordinates (x, y).
Parameters :





str: text to be written
x: text position on x-axis
y: text position on y-axis
mode: mode parameter. Valid values: SPI_T6963C_ROM_MODE_OR,

SPI_T6963C_ROM_MODE_XOR, SPI_T6963C_ROM_MODE_AND
and SPI_T6963C_ROM_MODE_TEXT
Description

Mode parameter explanation:


OR Mode: In the OR-Mode, text and graphics can be displayed and the
data is logically “OR-ed”. This is the most common way of combining text
and graphics for example labels on buttons.
 XOR-Mode: In this mode, the text and graphics data are combined via
the logical “exclusive OR”. This can be useful to display text in negative
mode, i.e. white text on black background.
 AND-Mode: The text and graphic data shown on the display are com
bined via the logical “AND function”.
 TEXT-Mode: This option is only available when displaying just a text. The
Text Attribute values are stored in the graphic area of display memory.
For more details see the T6963C datasheet.

476

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Write_Text("GLCD LIBRARY DEMO, WELCOME !", 0, 0,
T6963C_ROM_MODE_EXOR)

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SPI_T6963C_Line
Prototype

sub procedure SPI_T6963C_Line(dim x0 as integer, dim y0 as integer, dim x1 as integer, dim y1 as integer, dim pcolor as byte)

Returns

Nothing.
Draws a line from (x0, y0) to (x1, y1).
Parameters :

Description







x0: x coordinate of the line start
y0: y coordinate of the line end
x1: x coordinate of the line start
y1: y coordinate of the line end
pcolor: color parameter. Valid values: SPI_T6963C_BLACK and

SPI_T6963C_WHITE
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Line(0, 0, 239, 127, T6963C_WHITE)

SPI_T6963C_Rectangle
Prototype

sub procedure SPI_T6963C_Rectangle(dim x0 as integer, dim y0 as
integer, dim x1 as integer, dim y1 as integer, dim pcolor as
byte)

Returns

Nothing.
Draws a rectangle on Glcd.
Parameters :

Description







x0: x coordinate of the upper left rectangle corner
y0: y coordinate of the upper left rectangle corner
x1: x coordinate of the lower right rectangle corner
y1: y coordinate of the lower right rectangle corner
pcolor: color parameter. Valid values: SPI_T6963C_BLACK and

SPI_T6963C_WHITE
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Rectangle(20, 20, 219, 107, T6963C_WHITE)

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SPI_T6963C_Box
Prototype

sub procedure SPI_T6963C_Box(dim x0 as integer, dim y0 as integer, dim x1 as integer, dim y1 as integer, dim pcolor as byte)

Returns

Nothing.
Draws a box on the Glcd
Parameters :

Description







x0: x coordinate of the upper left box corner
y0: y coordinate of the upper left box corner
x1: x coordinate of the lower right box corner
y1: y coordinate of the lower right box corner
pcolor: color parameter. Valid values: SPI_T6963C_BLACK and

SPI_T6963C_WHITE
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Box(0, 119, 239, 127, T6963C_WHITE)

SPI_T6963C_Circle
Prototype

sub procedure SPI_T6963C_Circle(dim x as integer, dim y as integer, dim r as longint, dim pcolor as byte)

Returns

Nothing.
Draws a circle on the Glcd.
Parameters :

Description






x: x coordinate of the circle center
y: y coordinate of the circle center
r: radius size
pcolor: color parameter. Valid values: SPI_T6963C_BLACK and

SPI_T6963C_WHITE

478

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Circle(120, 64, 110, T6963C_WHITE)

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SPI_T6963C_Image
Prototype

sub procedure SPI_T6963C_image(const pic as ^byte)

Returns

Nothing.
Displays bitmap on Glcd.
Parameters :
 pic: image to be displayed. Bitmap array can be located in both code and

RAM memory (due to the mikroBasic PRO for PIC pointer to const and
pointer to RAM equivalency).

Description

Use the mikroBasic PRO’s integrated Glcd Bitmap Editor (menu option Tools ›
Glcd Bitmap Editor) to convert image to a constant array suitable for displaying on Glcd.
Note: Image dimension must match the display dimension.
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Image(my_image)

SPI_T6963C_Sprite
Prototype

sub procedure SPI_T6963C_sprite(dim px, py as byte, const pic as
^byte, dim sx, sy as byte)

Returns

Nothing.
Fills graphic rectangle area (px, py) to (px+sx, py+sy) with custom size picture.
Parameters :


Description






px: x coordinate of the upper left picture corner. Valid values: multiples of
the font width
py: y coordinate of the upper left picture corner
pic: picture to be displayed
sx: picture width. Valid values: multiples of the font width
sy: picture height

Note: If px and sx parameters are not multiples of the font width they will be
scaled to the nearest lower number that is a multiple of the font width.
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Sprite(76, 4, einstein, 88, 119) ' draw a sprite

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SPI_T6963C_Set_Cursor
Prototype

sub procedure SPI_T6963C_set_cursor(dim x, y as byte)

Returns

Nothing.
Sets cursor to row x and column y.

Description

Parameters :



x: cursor position row number
y: cursor position column number

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Set_Cursor(cposx, cposy)

SPI_T6963C_ClearBit
Prototype

sub procedure SPI_T6963C_clearBit(dim b as byte)

Returns

Nothing.
Clears control port bit(s).

Description

Parameters :


b: bit mask. The function will clear bit x on control port if bit x in bit mask

is set to 1.
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' clear bits 0 and 1 on control port
SPI_T6963C_ClearBit(0x03)

SPI_T6963C_SetBit
Prototype

sub procedure SPI_T6963C_setBit(dim b as byte)

Returns

Nothing.
Sets control port bit(s).

Description

Parameters :


b: bit mask. The function will set bit x on control port if bit x in bit mask is set

to 1.

480

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' set bits 0 and 1 on control port
SPI_T6963C_SetBit(0x03)

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SPI_T6963C_NegBit
Prototype

sub procedure SPI_T6963C_negBit(dim b as byte)

Returns

Nothing.
Negates control port bit(s).

Description

Parameters :
 b: bit mask. The function will negate bit x on control port if bit x in bit mask

is set to 1.
Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' negate bits 0 and 1 on control port
SPI_T6963C_NegBit(0x03)

SPI_T6963C_DisplayGrPanel
Prototype

sub procedure SPI_T6963C_DisplayGrPanel(dim n as byte)

Returns

Nothing.
Display selected graphic panel.

Description Parameters :


n: graphic panel number. Valid values: 0 and 1.

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' display graphic panel 1
SPI_T6963C_DisplayGrPanel(1)

SPI_T6963C_DisplayTxtPanel
Prototype

sub procedure SPI_T6963C_DisplayTxtPanel(dim n as byte)

Returns

Nothing.
Display selected text panel.

Description Parameters :


n: text panel number. Valid values: 0 and 1.

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' display text panel 1
SPI_T6963C_DisplayTxtPanel(1)

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SPI_T6963C_SetGrPanel
Prototype

sub procedure SPI_T6963C_SetGrPanel(dim n as byte)

Returns

Nothing.
Compute start address for selected graphic panel and set appropriate internal
pointers. All subsequent graphic operations will be preformed at this graphic
panel.

Description
Parameters :


n: graphic panel number. Valid values: 0 and 1.

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' set graphic panel 1 as current graphic panel.
SPI_T6963C_SetGrPanel(1)

SPI_T6963C_SetTxtPanel
Prototype

sub procedure SPI_T6963C_SetTxtPanel(dim n as byte)

Returns

Nothing.
Compute start address for selected text panel and set appropriate internal pointers. All subsequent text operations will be preformed at this text panel.

Description

Parameters :


482

n: text panel number. Valid values: 0 and 1.

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' set text panel 1 as current text panel.
SPI_T6963C_SetTxtPanel(1)

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SPI_T6963C_PanelFill
Prototype

sub procedure SPI_T6963C_PanelFill(dim v as byte)

Returns

Nothing.
Fill current panel in full (graphic+text) with appropriate value (0 to clear).

Description Parameters :


v: value to fill panel with.

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

clear current panel
SPI_T6963C_PanelFill(0)

SPI_T6963C_GrFill
Prototype

sub procedure SPI_T6963C_GrFill(dim v as byte)

Returns

Nothing.
Fill current graphic panel with appropriate value (0 to clear).

Description Parameters :


v: value to fill graphic panel with.

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' clear current graphic panel
SPI_T6963C_GrFill(0)

SPI_T6963C_TxtFill
Prototype

sub procedure SPI_T6963C_TxtFill(dim v as byte)

Returns

Nothing.
Fill current text panel with appropriate value (0 to clear).

Description Parameters :


v: this value increased by 32 will be used to fill text panel.

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' clear current text panel
SPI_T6963C_TxtFill(0)

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SPI_T6963C_Cursor_Height
Prototype

sub procedure SPI_T6963C_Cursor_Height(dim n as byte)

Returns

Nothing.
Set cursor size.

Description Parameters :


n: cursor height. Valid values: 0..7.

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

SPI_T6963C_Cursor_Height(7)

SPI_T6963C_Graphics
Prototype

sub procedure SPI_T6963C_Graphics(dim n as byte)

Returns

Nothing.
Enable/disable graphic displaying.

Description

Parameters :


Requires
Example

n: graphic enable/disable parameter. Valid values: 0 (disable graphic
dispaying) and 1 (enable graphic displaying).

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.
'enable graphic displaying
SPI_T6963C_Graphics(1)

SPI_T6963C_Text
Prototype

sub procedure SPI_T6963C_Text(dim n as byte)

Returns

Nothing.
Enable/disable text displaying.

Description

Parameters :


484

n: text enable/disable parameter. Valid values: 0 (disable text dispaying)
and 1 (enable text displaying).

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' enable text displaying
SPI_T6963C_Text(1)

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SPI_T6963C_Cursor
Prototype

sub procedure SPI_T6963C_Cursor(dim n as byte)

Returns

Nothing.
Set cursor on/off.

Description Parameters :


n: on/off parameter.Valid values: 0 (set cursor off) and 1 (set cursor on).

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' set cursor on
SPI_T6963C_Cursor(1)

SPI_T6963C_Cursor_Blink
Prototype

sub procedure SPI_T6963C_Cursor_Blink(dim n as byte)

Returns

Nothing.
Enable/disable cursor blinking.

Description

Parameters :


n: cursor blinking enable/disable parameter. Valid values: 0 (disable
cursor blinking) and 1 (enable cursor blinking).

Requires

Toshiba Glcd module needs to be initialized. See SPI_T6963C_Config routine.

Example

' enable cursor blinking
SPI_T6963C_Cursor_Blink(1)

Library Example
The following drawing demo tests advanced routines of the SPI T6963C Glcd library. Hardware
configurations in this example are made for the T6963C 240x128 display, EasyPIC5 board and
PIC16F887.
program SPI_T6963C_240x128
include __Lib_SPIT6963C_Const
include bitmap
include bitmap2
dim
' Port Expander module connections

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SPExpanderRST as sbit at RC0_bit
SPExpanderCS as sbit at RC1_bit
SPExpanderRST_Direction as sbit at TRISC0_bit
SPExpanderCS_Direction as sbit at TRISC1_bit
' End Port Expander module connections
dim

panel as byte
' current panel
i as word
' general purpose register
curs as byte
' cursor visibility
cposx,
cposy as word
' cursor x-y position
txt, txt1 as string[29]

main:
txt1 = " EINSTEIN WOULD HAVE LIKED mE"
txt = " GLCD LIBRARY DEMO, WELCOME !"
ANSEL =
ANSELH =
C1ON_bit
C2ON_bit

0
0
= 0
= 0

TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit
TRISB4_bit

=
=
=
=
=

' Configure AN pins as digital I/O
' Disable comparators

1
1
1
1
1

'
'
'
'
'

Set
Set
Set
Set
Set

RB0
RB1
RB2
RB3
RB4

as
as
as
as
as

input
input
input
input
input

' Initialize SPI module
SPI1_Init()
' ' If Port Expander Library uses SPI2 module
' Pass pointer to SPI Read sub function of used SPI module
' Initialize SPI module used with PortExpander
' SPI2_Init_Advanced(_SPI_MASTER, _SPI_FCY_DIV32,
TRAILING)
'
'
'
'
'
'
'
'
'
'

486

*
*
*
*
*
*
*
*
*
*

_SPI_CLK_HI_

init display for 240 pixel width and 128 pixel height
8 bits character width
data bus on MCP23S17 portB
control bus on MCP23S17 PORTA
bit 2 is !WR
bit 1 is !RD
bit 0 is !CD
bit 4 is RST
chip enable, reverse on, 8x8 font internaly set in library

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*
' Initialize SPI Toshiba 240x128
SPI_T6963C_Config(240, 128, 8, 0, 2, 1, 0, 4)
'Delay_ms(1000)

'
'
'

*
* Enable both graphics and text display at the same time
*
SPI_T6963C_graphics(1)
SPI_T6963C_text(1)
panel = 0
i = 0
curs = 0
cposx = 0
cposy = 0

'
'
'

*
* Text messages
*
SPI_T6963C_write_text(txt, 0, 0, SPI_T6963C_ROM_MODE_XOR)
SPI_T6963C_write_text(txt1, 0, 15, SPI_T6963C_ROM_MODE_XOR)

'
'
'

*
* Cursor
*
SPI_T6963C_cursor_height(8)
SPI_T6963C_set_cursor(0, 0)
SPI_T6963C_cursor(0)

'
'
'

'
'
'

'

' 8 pixel height
' move cursor to top left
' cursor off

*
* Draw rectangles
*
SPI_T6963C_rectangle(0, 0, 239, 127, SPI_T6963C_WHITE)
SPI_T6963C_rectangle(20, 20, 219, 107, SPI_T6963C_WHITE)
SPI_T6963C_rectangle(40, 40, 199, 87, SPI_T6963C_WHITE)
SPI_T6963C_rectangle(60, 60, 179, 67, SPI_T6963C_WHITE)

*
* Draw a cross
*
SPI_T6963C_line(0, 0, 239, 127, SPI_T6963C_WHITE)
SPI_T6963C_line(0, 127, 239, 0, SPI_T6963C_WHITE)
*

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'
'

* Draw solid boxes
*
SPI_T6963C_box(0, 0, 239, 8, SPI_T6963C_WHITE)
SPI_T6963C_box(0, 119, 239, 127, SPI_T6963C_WHITE)

'
'
'

*
* Draw circles
*
SPI_T6963C_circle(120,
SPI_T6963C_circle(120,
SPI_T6963C_circle(120,
SPI_T6963C_circle(120,
SPI_T6963C_circle(120,
SPI_T6963C_circle(120,
SPI_T6963C_circle(120,

64,
64,
64,
64,
64,
64,
64,

10,
30,
50,
70,
90,
110,
130,

SPI_T6963C_WHITE)
SPI_T6963C_WHITE)
SPI_T6963C_WHITE)
SPI_T6963C_WHITE)
SPI_T6963C_WHITE)
SPI_T6963C_WHITE)
SPI_T6963C_WHITE)

SPI_T6963C_sprite(76, 4, @einstein, 88, 119)
SPI_T6963C_setGrPanel(1)

' Draw a sprite

' Select other graphic panel

SPI_T6963C_sprite(0, 0, @mikroe, 240, 64)
' 240x128 can"t be
stored in most of PIC16 MCUs
SPI_T6963C_sprite(0, 64, @mikroe, 240, 64)
' it is replaced
with smaller picture 240x64
' Smaller picture is drawn two times
while TRUE

' Endless loop

'*
'* If PORTB_0 is pressed, toggle the display between graphic
panel 0 and graphic 1
'*
if (RB0_bit <> 0) then
Inc(panel)
panel = panel and 1
SPI_T6963C_displayGrPanel(panel)
Delay_ms(300)
'*
'* If PORTB_2 is pressed, display only text panel
'*
else
if (RB2_bit <> 0) then
SPI_T6963C_graphics(0)
SPI_T6963C_text(1)
Delay_ms(300)
'*
'* If PORTB_3 is pressed, display text and graphic panels
'*

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else
if (RB3_bit <> 0) then
SPI_T6963C_graphics(1)
SPI_T6963C_text(1)
Delay_ms(300)

'*
'*
'*

If PORTB_4 is pressed, change cursor
else
if(RB4_bit <> 0) then
Inc(curs)
if (curs = 3) then
curs = 0
end if
select case curs
case 0
' no cursor
SPI_T6963C_cursor(0)
case 1
' blinking cursor
SPI_T6963C_cursor(1)
SPI_T6963C_cursor_blink(1)
case 2
' non blinking cursor
SPI_T6963C_cursor(1)
SPI_T6963C_cursor_blink(0)
end select 'case
Delay_ms(300)

end if
end if
end if
end if
end if
'*
'* Move cursor, even if not visible
'*
Inc(cposx)
if (cposx = SPI_T6963C_txtCols) then
cposx = 0
Inc(cposy)
if (cposy = SPI_T6963C_grHeight / SPI_T6963C_CHARACTER_
HEIGHT) then
cposy = 0
end if
end if
SPI_T6963C_set_cursor(cposx, cposy)

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Delay_ms(100)
wend
end.

HW Connection

SPI T6963C Glcd HW connection

490

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T6963C GRAPHIC LCD LIBRARY
The mikroBasic PRO for PIC provides a library for working with Glcds based on
TOSHIBA T6963C controller. The Toshiba T6963C is a very popular Lcd controller
for the use in small graphics modules. It is capable of controlling displays with a resolution up to 240x128. Because of its low power and small outline it is most suitable
for mobile applications such as PDAs, MP3 players or mobile measurement equipment. Although small, this contoller has a capability of displaying and merging text
and graphics and it manages all the interfacing signals to the displays Row and Column drivers.
For creating a custom set of Glcd images use Glcd Bitmap Editor Tool.
Note: ChipEnable(CE), FontSelect(FS) and Reverse(MD) have to be set to appropriate levels by the user outside of the T6963C_Init function. See the Library Example code at the bottom of this page.
Note: Some mikroElektronika's adapter boards have pinout different from T6369C
datasheets. Appropriate relations between these labels are given in the table below:
Adapter Board T6369C datasheet
RS

C/D

R/W

/RD

E

/WR

External dependencies of T6963C Graphic LCD Library
The following variables
must be defined in all projects using T6963C Graphic
LCD library:

Description:

Example :

dim T6963C_dataPort as
byte sfr external

T6963C Data Port.

dim T6963C_dataPort
as byte at PORTD

dim T6963C_ctrlwr as
sbit sfr external

Write signal.

dim T6963C_ctrlwr as
sbit at RC2_bit

dim T6963C_ctrlrd as
sbit sfr external

Read signal.

dim T6963C_ctrlrd as
sbit at RC1_bit

dim T6963C_ctrlcd as
sbit sfr external

Command/Data signal. sbit at RC0_bit

dim T6963C_ctrlrst as
sbit sfr external

Reset signal.

dim T6963C_ctrlrst as
sbit at RC4_bit

dim
T6963C_ctrlwr_Direction
as sbit sfr external

Direction of the Write
pin.

dim T6963C_ctrlwr_
Direction as sbit at
TRISC2_bit

dim T6963C_ctrlcd as

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The following variables
must be defined in all projects using T6963C Graphic
LCD library:

Description:

Example :

dim
T6963C_ctrlrd_Direction
as sbit sfr external

Direction of the Read
T6963C_ctrlrd_Direction
pin.
as sbit at TRISC1_bit

dim

dim
T6963C_ctrlcd_Direction
as sbit sfr external

Direction of the ComT6963C_ctrlcd_Direction
mand/Data pin.
as sbit at TRISC0_bit

dim
T6963C_ctrlrst_Direction
as sbit sfr external

Direction of the Reset T6963C_ctrlrst_Directi
on as sbit at
pin.

dim

dim

TRISC4_bit

Library Routines





























492

T6963C_Init
T6963C_WriteData
T6963C_WriteCommand
T6963C_SetPtr
T6963C_WaitReady
T6963C_Fill
T6963C_Dot
T6963C_Write_Char
T6963C_Write_Text
T6963C_Line
T6963C_Rectangle
T6963C_Box
T6963C_Circle
T6963C_Image
T6963C_Sprite
T6963C_Set_Cursor
T6963C_DisplayGrPanel
T6963C_DisplayTxtPanel
T6963C_SetGrPanel
T6963C_SetTxtPanel
T6963C_PanelFill
T6963C_GrFill
T6963C_TxtFill
T6963C_Cursor_Height
T6963C_Graphics
T6963C_Text
T6963C_Cursor
T6963C_Cursor_Blink

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T6963C_Init
Prototype

sub procedure T6963C_init(dim width, height, fntW as byte)

Returns

Nothing.
Initializes T6963C Graphic Lcd controller.
Parameters :




width: width of the Glcd panel
height: height of the Glcd panel
fntW: font width

Display RAM organization:
The library cuts the RAM into panels : a complete panel is one graphics panel
followed by a text panel (see schematic below).

Description

schematic:
+--------------------+ GRAPHICS PANEL #0
+
+
+
+--------------------+ TEXT PANEL #0
+
+--------------------+ GRAPHICS PANEL #1
+
+
+
+--------------------+ TEXT PANEL #1
+
+---------------------

+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+

/\
|
|
|
|
| PANEL 0
|
\/
/\
|
|
|
|
| PANEL 1
|
|
\/

Global variables :

Requires











T6963C_dataPort: Data Port
T6963C_ctrlwr: Write signal pin
T6963C_ctrlrd: Read signal pin
T6963C_ctrlcd: Command/Data signal pin
T6963C_ctrlrst: Reset signal pin
T6963C_ctrlwr_Direction: Direction of Write signal pin
T6963C_ctrlrd_Direction: Direction of Read signal pin
T6963C_ctrlcd_Direction: Direction of Command/Data signal pin
T6963C_ctrlrst_Direction: Direction of Reset signal pin

must be defined before using this function.
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Example

‘T6963C module connections
dim T6963C_dataPort as byte at PORTD
dim T6963C_ctrlwr as sbit at RC2_bit
dim T6963C_ctrlrd as sbit at RC1_bit
dim T6963C_ctrlcd as sbit at RC0_bit
dim T6963C_ctrlrst as sbit at RC4_bit
dim T6963C_ctrlwr_Direction as sbit at TRISC2_bit
dim T6963C_ctrlrd_Direction as sbit at TRISC1_bit
dim T6963C_ctrlcd_Direction as sbit at TRISC0_bit
dim T6963C_ctrlrst_Direction as sbit at TRISC4_bit
' End of T6963C module connections
...
' init display for 240 pixel width, 128 pixel height and 8 bits
character width
T6963C_init(240, 128, 8)

T6963C_WriteData
Prototype

sub procedure T6963C_WriteData(dim mydata as byte)

Returns

Nothing.
Writes data to T6963C controller.

Description Parameters :
 mydata: data to be written

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_WriteData(AddrL)

T6963C_WriteCommand
Prototype

sub procedure T6963C_WriteCommand(dim mydata as byte)

Returns

Nothing.
Writes command to T6963C controller.

Description Parameters :
 mydata: command to be written

494

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_WriteCommand(T6963C_CURSOR_POINTER_SET)

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T6963C_SetPtr
Prototype

sub procedure T6963C_SetPtr(dim p as word, dim c as byte)

Returns

Nothing.
Sets the memory pointer p for command c.

Description

Parameters :



p: address where command should be written
c: command to be written

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_SetPtr(T6963C_grHomeAddr + start,
T6963C_ADDRESS_POINTER_SET)

T6963C_WaitReady
Prototype

sub procedure T6963C_WaitReady()

Returns

Nothing.

Description Pools the status byte, and loops until Toshiba Glcd module is ready.
Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_WaitReady()

T6963C_Fill
Prototype

sub procedure T6963C_Fill(dim v as byte, dim start, len as word)

Returns

Nothing.
Fills controller memory block with given byte.
Parameters :

Description




v: byte to be written
start: starting address of the memory block
len: length of the memory block in bytes

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Fill(0x33,0x00FF,0x000F)

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T6963C_Dot
Prototype

sub procedure T6963C_Dot(dim x, y as integer, dim color as byte)

Returns

Nothing.
Draws a dot in the current graphic panel of Glcd at coordinates (x, y).
Parameters :

Description





x: dot position on x-axis
y: dot position on y-axis
color: color parameter. Valid values: T6963C_BLACK and

T6963C_WHITE

496

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Dot(x0, y0, pcolor)

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T6963C_Write_Char
Prototype

sub procedure T6963C_Write_Char(dim c, x, y, mode as byte)

Returns

Nothing.
Writes a char in the current text panel of Glcd at coordinates (x, y).
Parameters :





c: char to be written
x: char position on x-axis
y: char position on y-axis
mode: mode parameter. Valid values: T6963C_ROM_MODE_OR,

T6963C_ROM_MODE_XOR, T6963C_ROM_MODE_AND and
T6963C_ROM_MODE_TEXT
Description

Mode parameter explanation:


OR Mode: In the OR-Mode, text and graphics can be displayed and the
data is logically “OR-ed”. This is the most common way of combining text
and graphics for example labels on buttons.
 XOR-Mode: In this mode, the text and graphics data are combined via the
logical “exclusive OR”. This can be useful to display text in the negative
mode, i.e. white text on black background.
 AND-Mode: The text and graphic data shown on display are combined via
the logical “AND function”.
 TEXT-Mode:This option is only available when displaying just a text. The
Text Attribute values are stored in the graphic area of display memory.
For more details see the T6963C datasheet.

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Write_Char('A',22,23,AND)

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T6963C_Write_Text
Prototype

sub procedure T6963C_Write_Text(dim byref str as byte[10], dim x,
y, mode as byte)

Returns

Nothing.
Writes text in the current text panel of Glcd at coordinates (x, y).
Parameters :





str: text to be written
x: text position on x-axis
y: text position on y-axis
mode: mode parameter. Valid values: T6963C_ROM_MODE_OR,

T6963C_ROM_MODE_XOR, T6963C_ROM_MODE_AND and
T6963C_ROM_MODE_TEXT
Mode parameter explanation:
Description


OR Mode: In the OR-Mode, text and graphics can be displayed and the
data is logically “OR-ed”. This is the most common way of combining text
and graphics for example labels on buttons.
 XOR-Mode: In this mode, the text and graphics data are combined via
the logical “exclusive OR”. This can be useful to display text in the
negatiive mode, i.e. white text on black background.
 AND-Mode: The text and graphic data shown on display are combined
via the logical “AND function”.
 TEXT-Mode: This option is only available when displaying just a text.
The Text Attribute values are stored in the graphic area of display
memory.
For more details see the T6963C datasheet.

498

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Write_Text(" GLCD LIBRARY DEMO, WELCOME !", 0, 0,
T6963C_ROM_MODE_XOR)

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T6963C_Line
Prototype

sub procedure T6963C_Line(dim x0, y0, x1, y1 as integer, dim
pcolor as byte)

Returns

Nothing.
Draws a line from (x0, y0) to (x1, y1).
Parameters :

Description







x0: x coordinate of the line start
y0: y coordinate of the line end
x1: x coordinate of the line start
y1: y coordinate of the line end
pcolor: color parameter. Valid values: T6963C_BLACK and

T6963C_WHITE
Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Line(0, 0, 239, 127, T6963C_WHITE)

T6963C_Rectangle
Prototype

sub procedure T6963C_Rectangle(dim x0, y0, x1, y1 as integer, dim
pcolor as byte)

Returns

Nothing.
Draws a rectangle on Glcd.
Parameters :

Description







x0: x coordinate of the upper left rectangle corner
y0: y coordinate of the upper left rectangle corner
x1: x coordinate of the lower right rectangle corner
y1: y coordinate of the lower right rectangle corner
pcolor: color parameter. Valid values: T6963C_BLACK and

T6963C_WHITE
Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Rectangle(20, 20, 219, 107, T6963C_WHITE)

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T6963C_Box
Prototype

psub procedure T6963C_Box(dim x0, y0, x1, y1 as integer, dim
pcolor as byte)

Returns

Nothing.
Draws a box on Glcd.
Parameters :






Description

x0: x coordinate of the upper left box corner
y0: y coordinate of the upper left box corner
x1: x coordinate of the lower right box corner
y1: y coordinate of the lower right box corner
pcolor: color parameter. Valid values: T6963C_BLACK and

T6963C_WHITE
Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Box(0, 119, 239, 127, T6963C_WHITE)

T6963C_Circle
Prototype

sub procedure T6963C_Circle(dim x, y as integer, dim r as longint,
dim pcolor as byte)

Returns

Nothing.
Draws a circle on Glcd.
Parameters :

Description






x: x coordinate of the circle center
y: y coordinate of the circle center
r: radius size
pcolor: color parameter. Valid values: T6963C_BLACK and

T6963C_WHITE

500

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Circle(120, 64, 110, T6963C_WHITE)

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T6963C_Image
Prototype

sub procedure T6963C_Image(const pic as ^byte)

Returns

Nothing.
Displays bitmap on Glcd.
Parameters :


Description

pic: image to be displayed. Bitmap array can be located in both code
and RAM memory (due to the mikroBasic PRO for PIC pointer to const
and pointer to RAM equivalency).

Use the mikroBasic PRO’s integrated Glcd Bitmap Editor (menu option Tools ›
Glcd Bitmap Editor) to convert image to a constant array suitable for displaying on Glcd.
Note: Image dimension must match the display dimension.
Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

TT6963C_Image(mc)

T6963C_Sprite
Prototype

sub procedure T6963C_Sprite(dim px, py, sx, sy as byte, const pic as
^byte)

Returns

Nothing.
Fills graphic rectangle area (px, py) to (px+sx, py+sy) with custom size picture.
Parameters :


Description






px: x coordinate of the upper left picture corner. Valid values: multiples
of the font width
py: y coordinate of the upper left picture corner
pic: picture to be displayed
sx: picture width. Valid values: multiples of the font width
sy: picture height

Note: If px and sx parameters are not multiples of the font width they will be
scaled to the nearest lower number that is a multiple of the font width.
Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Sprite(76, 4, einstein, 88, 119) ' draw a sprite

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T6963C_Set_Cursor
Prototype

sub procedure T6963C_Set_Cursor(dim x, y as byte)

Returns

Nothing.
Sets cursor to row x and column y.

Description

Parameters :



x: cursor position row number
y: cursor position column number

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Set_Cursor(cposx, cposy)

T6963C_DisplayGrPanel
Prototype

sub procedure T6963C_DisplayGrPanel(dim n as byte)

Returns

Nothing.
Display selected graphic panel.

Description Parameters :


n: graphic panel number. Valid values: 0 and 1.

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

' display text panel 1
T6963C_DisplayTxtPanel(1)

T6963C_DisplayTxtPanel
Prototype

sub procedure T6963C_DisplayTxtPanel(dim n as byte)

Returns

Nothing.
Display selected text panel.

Description Parameters :


502

n: text panel number. Valid values: 0 and 1.

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

' display text panel 1
T6963C_DisplayTxtPanel(1)

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T6963C_SetGrPanel
Prototype

sub procedure T6963C_SetGrPanel(dim n as byte)

Returns

Nothing.
Compute start address for selected graphic panel and set appropriate internal
pointers. All subsequent graphic operations will be preformed at this graphic
panel.

Description
Parameters :


n: graphic panel number. Valid values: 0 and 1.

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

' set graphic panel 1 as current graphic panel.
T6963C_SetGrPanel(1)

T6963C_SetTxtPanel
Prototype

sub procedure T6963C_SetTxtPanel(dim n as byte)

Returns

Nothing.
Compute start address for selected text panel and set appropriate internal pointers. All subsequent text operations will be preformed at this text panel.

Description

Parameters


n: text panel number. Valid values: 0 and 1.

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

' set text panel 1 as current text panel.
T6963C_SetTxtPanel(1)

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T6963C_PanelFill
Prototype

sub procedure T6963C_PanelFill(dim v as byte)

Returns

Nothing.
Fill current panel in full (graphic+text) with appropriate value (0 to clear).

Description Parameters :


v: value to fill panel with.

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

clear current panel
T6963C_PanelFill(0)

T6963C_GrFill
Prototype

procedure T6963C_GrFill(v : byte);

Returns

Nothing.
Fill current graphic panel with appropriate value (0 to clear).

Description Parameters :


v: value to fill graphic panel with.

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

‘clear current graphic panel
T6963C_GrFill(0)

T6963C_TxtFill
Prototype

sub procedure T6963C_TxtFill(dim v as byte)

Returns

Nothing.
Fill current text panel with appropriate value (0 to clear).

Description Parameters :


504

v: this value increased by 32 will be used to fill text panel.

Requires

Toshiba GLCD module needs to be initialized. See the T6963C_Init routine.

Example

' clear current text panel
T6963C_TxtFill(0)

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T6963C_Cursor_Height
Prototype

sub procedure T6963C_Cursor_Height(dim n as byte)

Returns

Nothing.
Set cursor size.

Description Parameters :


n cursor height. Valid values: 0..7.

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

T6963C_Cursor_Height(7)

T6963C_Graphics
Prototype

sub procedure T6963C_Graphics(dim n as byte)

Returns

Nothing.
Enable/disable graphic displaying.

Description

Parameters :


n: on/off parameter. Valid values: 0 (disable graphic dispaying) and 1

(enable graphic displaying).
Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

' enable graphic displaying
T6963C_Graphics(1)

T6963C_Text
Prototype

sub procedure T6963C_Text(dim n as byte)

Returns

Nothing.
Enable/disable text displaying.

Description

Parameters :


n: on/off parameter. Valid values: 0 (disable text dispaying) and 1
(enable text displaying).

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

' enable text displaying
T6963C_Text(1)

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T6963C_Cursor
Prototype

sub procedure T6963C_Cursor(dim n as byte)

Returns

Nothing.
Set cursor on/off.

Description

Parameters :


n: on/off parameter. Valid values: 0 (set cursor off) and 1 (set cursor
on).

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

' set cursor on
T6963C_Cursor(1)

T6963C_Cursor_Blink
Prototype

sub procedure T6963C_Cursor_Blink(dim n as byte)

Returns

Nothing.
Enable/disable cursor blinking.

Description

Parameters :


n: on/off parameter. Valid values: 0 (disable cursor blinking) and 1
(enable cursor blinking).

Requires

Toshiba Glcd module needs to be initialized. See the T6963C_Init routine.

Example

' enable cursor blinking
T6963C_Cursor_Blink(1)

Library Example
The following drawing demo tests advanced routines of the T6963C Glcd library. Hardware configurations in this example are made for the T6963C 240x128 display, EasyPIC5 board and
PIC16F887.

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program T6963C_240x128
include __Lib_T6963C_Consts
include einstein_bmp
include mikroe_bmp
' T6963C module connections
dim T6963C_dataPort as byte at PORTD

' DATA port

dim T6963C_ctrlwr as sbit at RC2_bit
' WR write signal
dim T6963C_ctrlrd as sbit at RC1_bit
' RD read signal
dim T6963C_ctrlcd as sbit at RC0_bit
' CD command/data signal
dim T6963C_ctrlrst as sbit at RC4_bit
' RST reset signal
dim T6963C_ctrlwr_Direction as sbit at TRISC2_bit ' WR write signal
direction
dim T6963C_ctrlrd_Direction as sbit at TRISC1_bit ' RD read signal
direction
dim T6963C_ctrlcd_Direction as sbit at TRISC0_bit
' CD command/data
signal direction
dim T6963C_ctrlrst_Direction as sbit at TRISC4_bit
' RST reset signal direction
' Signals not used by library, they are set in main sub function
dim T6963C_ctrlce as sbit at RC3_bit
' CE signal
dim T6963C_ctrlfs as sbit at RC6_bit
' FS signal
dim T6963C_ctrlmd as sbit at RC5_bit
' MD signal
dim T6963C_ctrlce_Direction as sbit at TRISC3_bit
' CE signal
direction
dim T6963C_ctrlfs_Direction as sbit at TRISC6_bit
' FS signal
direction
dim T6963C_ctrlmd_Direction as sbit at TRISC5_bit
' MD signal direction
' End T6963C module connections
dim

panel as byte
'
i as word
'
curs as byte
'
cposx,
cposy as word
'
txtcols as byte
'
txt, txt1 as string[29]

current panel
general purpose register
cursor visibility
cursor x-y position
number of text coloms

main:
txt1 = " EINSTEIN WOULD HAVE LIKED mE"
txt = " GLCD LIBRARY DEMO, WELCOME !"
ANSEL =
ANSELH =
C1ON_bit
C2ON_bit

0
0
= 0
= 0

' Configure AN pins as digital I/O
' Disable comparators

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TRISB0_bit
TRISB1_bit
TRISB2_bit
TRISB3_bit
TRISB4_bit

=
=
=
=
=

1
1
1
1
1

T6963C_ctrlce_Direction = 0
T6963C_ctrlce = 0
T6963C_ctrlfs_Direction = 0
T6963C_ctrlfs = 0
T6963C_ctrlmd_Direction = 0
T6963C_ctrlmd = 0

'
'
'
'
'

Set
Set
Set
Set
Set

RB0
RB1
RB2
RB3
RB4

as
as
as
as
as

input
input
input
input
input

' Enable T6963C
' Font Select 8x8
' Column number select

panel = 0
i = 0
curs = 0
cposx = 0
cposy = 0
' Initialize T6369C
T6963C_init(240, 128, 8)
'
'
'

*
* Enable both graphics and text display at the same time
*
T6963C_graphics(1)
T6963C_text(1)

'
'
'

*
* Text messages
*
T6963C_write_text(txt, 0, 0, T6963C_ROM_MODE_XOR)
T6963C_write_text(txt1, 0, 15, T6963C_ROM_MODE_XOR)

'
'
'

*
* Cursor
*
T6963C_cursor_height(8)
T6963C_set_cursor(0, 0)
T6963C_cursor(0)

'
'
'

508

' 8 pixel height
' Move cursor to top left
' Cursor off

*
* Draw rectangles
*
T6963C_rectangle(0, 0, 239, 127, T6963C_WHITE)
T6963C_rectangle(20, 20, 219, 107, T6963C_WHITE)
T6963C_rectangle(40, 40, 199, 87, T6963C_WHITE)
T6963C_rectangle(60, 60, 179, 67, T6963C_WHITE)

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'
'
'

*
* Draw a cross
*
T6963C_line(0, 0, 239, 127, T6963C_WHITE)
T6963C_line(0, 127, 239, 0, T6963C_WHITE)

'
'
'

*
* Draw solid boxes
*
T6963C_box(0, 0, 239, 8, T6963C_WHITE)
T6963C_box(0, 119, 239, 127, T6963C_WHITE)

'
'
'

*
* Draw circles
*
T6963C_circle(120,
T6963C_circle(120,
T6963C_circle(120,
T6963C_circle(120,
T6963C_circle(120,
T6963C_circle(120,
T6963C_circle(120,

64,
64,
64,
64,
64,
64,
64,

10, T6963C_WHITE)
30, T6963C_WHITE)
50, T6963C_WHITE)
70, T6963C_WHITE)
90, T6963C_WHITE)
110, T6963C_WHITE)
130, T6963C_WHITE)

T6963C_sprite(76, 4, @einstein, 88, 119)
T6963C_setGrPanel(1)

' Draw a sprite

' Select other graphic panel

T6963C_sprite(0, 0,
@mikroe_bmp, 240, 64)
' 240x128 can"t be
stored in most of PIC16 MCUs
T6963C_sprite(0, 64, @mikroe_bmp, 240, 64)
' it is replaced with
smaller picture 240x64
'
Smaller picture
is drawn two times
while TRUE

' Endless loop

'*
'* If PORTB_0 is pressed, toggle the display between graphic
panel 0 and graphic 1
'*
if (RB0_bit <> 0) then
T6963C_graphics(1)
T6963C_text(0)
Delay_ms(300)
'*
'* If PORTB_1 is pressed, display only graphic panel
'*

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else
if (RB1_bit <> 0) then
Inc(panel)
panel = panel and 1
T6963C_setPtr((T6963C_grMemSize
panel, T6963C_GRAPHIC_HOME_ADDRESS_SET)
Delay_ms(300)

+

T6963C_txtMemSize)

*

'*
'* If PORTB_2 is pressed, display only text panel
'*
else
if (RB2_bit <> 0) then
T6963C_graphics(0)
T6963C_text(1)
Delay_ms(300)
'*
'* If PORTB_3 is pressed, display text and graphic panels
'*
else
if (RB3_bit <> 0) then
T6963C_graphics(1)
T6963C_text(1)
Delay_ms(300)
'*
'*
'*

If PORTB_4 is pressed, change cursor
else
if(RB4_bit <> 0) then
Inc(curs)
if (curs = 3) then
curs = 0
end if
select case curs
case 0
' no cursor
T6963C_cursor(0)
case 1
' blinking cursor
T6963C_cursor(1)
T6963C_cursor_blink(1)
case 2
' non blinking cursor
T6963C_cursor(1)
T6963C_cursor_blink(0)
end select 'case
Delay_ms(300)

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end if
end if
end if
end if
end if
'*
'* Move cursor, even if not visible
'*
Inc(cposx)
if (cposx = T6963C_txtCols) then
cposx = 0
Inc(cposy)
if (cposy = T6963C_grHeight / T6963C_CHARACTER_HEIGHT) then
cposy = 0
end if
end if
T6963C_set_cursor(cposx, cposy)
Delay_ms(100)
wend
end.

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HW Connection

T6963C Glcd HW connection

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UART LIBRARY
UART hardware module is available with a number of PIC MCUs. mikroBasic PRO
for PIC UART Library provides comfortable work with the Asynchronous (full duplex)
mode.
You can easily communicate with other devices via RS-232 protocol (for example
with PC, see the figure at the end of the topic – RS-232 HW connection). You need
a PIC MCU with hardware integrated UART, for example 16F887. Then, simply use
the functions listed below.
Note: Some PIC18 MCUs have multiple UART modules. Switching between the
UART modules in the UART library is done by the UART_Set_Active function (UART
module has to be previously initialized).
Note: In order to use the desired UART library routine, simply change the number
1 in the prototype with the appropriate module number, i.e. UART2_Init(2400)

Library Routines









UART1_Init
UART1_Data_Ready
UART1_Tx_Idle
UART1_Read
UART1_Read_Text
UART1_Write
UART1_Write_Text
UART_Set_Active

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UART1_Init
Prototype

sub procedure UART1_Init(dim baud_rate as longint)

Returns

Nothing.
Configures and initializes the UART module.
The internal UART module module is set to:

Description








receiver enabled
transmitter enabled
frame size 8 bits
1 STOP bit
parity mode disabled
asynchronous operation

Parameters :
 baud_rate: requested baud rate
Refer to the device data sheet for baud rates allowed for specific Fosc.

You'll need PIC MCU with hardware UART.
UART1_Init needs to be called before using other functions from UART

Library.
Requires
Note: Calculation of the UART baud rate value is carried out by the compiler, as
it would produce a relatively large code if performed on the libary level.
Therefore, compiler needs to know the value of the parameter in the compile
time. That is why this parameter needs to be a constant, and not a variable.
Example

'This will initialize hardware UART1 module and establish the
communication at 2400 bps
UART1_Init(2400)

UART1_Data_Read
Prototype

sub function UART1_Data_Ready() as byte

Returns

Function returns 1 if data is ready or 0 if there is no data.

Description The function tests if data in receive buffer is ready for reading.
MCU with the UART module.
Requires

Example

514

The UART module must be initialized before using this routine. See the
UART1_Init routine.
dim receive as byte
...
' read data if ready
if (UART1_Data_Ready() = 1) then
receive = UART1_Read()
end if

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UART1_Tx_Idle
Prototype

char UART1_Tx_Idle()



1 if the data has been transmitted
0 otherwise

Description Use the function to test if the transmit shift register is empty or not.
Requires

UART HW module must be initialized and communication established before
using this function. See UART1_Init.

Example

' If the previous data has been shifted out, send next data:
if (UART1_Tx_Idle = 1) then
UART1_Write(_data)
end if

UART1_Read
Prototype

sub function UART1_Read() as byte

Returns

Received byte.

Description

Requires

Example

The function receives a byte via UART. Use the UART1_Data_Ready function
to test if data is ready first.
MCU with the UART module.
The UART module must be initialized before using this routine. See UART1_Init
routine.
dim receive as byte
...
' read data if ready
if (UART1_Data_Ready() = 1) then
receive = UART1_Read()

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UART1_Read_Text
Prototype

sub procedure UART1_Read_Text(dim byref Output as string[255],
dim byref Delimiter as string[10], dim Attempts as byte)

Returns

Nothing.
Reads characters received via UART until the delimiter sequence is detected.
The read sequence is stored in the parameter output; delimiter sequence is
stored in the parameter delimiter.

Description

Requires

This is a blocking call: the delimiter sequence is expected, otherwise the procedure exits( if the delimiter is not found). Attempts defines number of received
characters in which Delimiter sequence is expected. If Attempts is set to 255,
this routine will continously try to detect the Delimiter sequence.
UART HW module must be initialized and communication established before
using this function. See UART1_Init.
Read text until the sequence “OK” is received, and send back what’s been
received:
UART1_Init(4800)
Delay_ms(100)

Example

' initialize UART module

while TRUE
if (UART1_Data_Ready() = 1)
' if data is received
UART1_Read_Text(output, 'delim', 10) ' reads text until
'delim' is found
UART1_Write_Text(output)
' sends back text
end if
wend.

UART1_Write
Prototype

sub procedure UART1_Write(dim TxData as byte)

Returns

Nothing.
The function transmits a byte via the UART module.

Description Parameters :
 TxData: data to be sent

MCU with the UART module.
Requires

Example

516

The UART module must be initialized before using this routine. See UART1_Init
routine.
dim data_ as byte
...
data_ = 0x1E
UART1_Write(data_)

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UART1_Write_Text
Prototype

sub procedure UART1_Write_Text(dim byref uart_text as string[255]

Returns

Nothing.

Description Sends text (parameter uart_text) via UART. Text should be zero terminated.
Requires

UART HW module must be initialized and communication established before
using this function. See UART1_Init.
Read text until the sequence “OK” is received, and send back what’s been
received:
UART1_Init(4800)
Delay_ms(100)

Example

' initialize UART module

while TRUE
if (UART1_Data_Ready() = 1)
' if data is received
UART1_Read_Text(output, 'delim', 10) ' reads text until
'delim' is found
UART1_Write_Text(output)
' sends back text
end if
wend.

UART_Set_Active
Prototype

sub procedure UART_Set_Active (dim read_ptr as ^Tread_ptr, dim
write_ptr as ^Twrite_ptr, dim ready_ptr as ^Tready_ptr, dim
tx_idle_ptr as ^Ttx_idle_ptr)

Returns

Nothing.
Sets active UART module which will be used by the UART library routines.
Parameters :

Description






read_ptr: UART1_Read handler
write_ptr: UART1_Write handler
ready_ptr: UART1_Data_Ready handler
tx_idle_ptr: UART1_Tx_Idle handler

Routine is available only for MCUs with two UART modules.
Requires

Example

Used UART module must be initialized before using this routine. See
UART1_Init routine.
‘Activate UART2 module
UART_Set_Active(UART1_Read, UART1_Write, UART1_Data_Ready,
UART1_Tx_Idle)

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Library Example

This example demonstrates simple data exchange via UART. If MCU is connected to the
PC, you can test the example from the mikroBasic PRO for PIC USART Terminal.
program UART
dim uart_rd as byte
main:
UART1_Init(9600)
Delay_ms(100)

' Initialize UART module at 9600 bps
' Wait for UART module to stabilize

while (TRUE)
' Endless loop
if (UART1_Data_Ready() <> 0) then ' If data is received,
uart_rd = UART1_Read()
'
read the received data,
UART1_Write(uart_rd)
'
and send data via UART
end if
wend
end.

HW Connection

UART HW connection

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USB HID Library
Universal Serial Bus (USB) provides a serial bus standard for connecting a wide variety of
devices, including computers, cell phones, game consoles, PDA’s, etc.
mikroBasic PRO for PIC includes a library for working with human interface devices via Universal
Serial Bus. A human interface device or HID is a type of computer device that interacts directly
with and takes input from humans, such as the keyboard, mouse, graphics tablet, and the like.

Descriptor File
Each project based on the USB HID library should include a descriptor source file which contains
vendor id and name, product id and name, report length, and other relevant information. To create a descriptor file, use the integrated USB HID terminal of mikroBasic (Tools › USB HID Terminal). The default name for descriptor file is USBdsc.pbas, but you may rename it.
The provided code in the “Examples” folder works at 48MHz, and the flags should not be modified without consulting the appropriate datasheet first.

Library Routines





Hid_Enable
Hid_Read
Hid_Write
Hid_Disable

Hid_Enable
Prototype

sub procedure Hid_Enable(dim readbuff, writebuff as word)

Returns

Nothing.

Enables USB HID communication. Parameters readbuff and writebuff are the
addresses of Read Buffer and the Write Buffer, respectively, which are used for
Description HID communication. You can pass buffer names with the @ operator.
This function needs to be called before using other routines of USB HID Library.
Requires

Nothing.

Example

Hid_Enable(@rd, @wr)

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Hid_Read
Prototype

sub function Hid_Read as byte

Returns

Number of characters in the Read Buffer received from the host.

Description

Receives message from host and stores it in the Read Buffer. Function returns
the number of characters received in the Read Buffer.

Requires

USB HID needs to be enabled before using this function. See Hid_Enable.

Example

length = Hid_Read

Hid_Write
Prototype

sub procedure Hid_Write(dim writebuff as word, dim len as byte)

Returns

Nothing.

Function sends data from Write Buffer writebuff to host. Write Buffer is the
address of the parameter used in initialization; see Hid_Enable. You can pass a
Description
buffer name with the @ operator. Parameter len should specify a length of the
data to be transmitted.
Requires

USB HID needs to be enabled before using this function. See Hid_Enable.

Example

Hid_Write(@wr, len)

Hid_Disable
Prototype

sub procedure Hid_Disable

Returns

Nothing.

Description Disables USB HID communication.

520

Requires

USB HID needs to be enabled before using this function. See Hid_Enable.

Example

Hid_Disable()

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Library Example
The following example continually sends sequence of numbers 0..255 to the PC via
Universal Serial Bus.
program hid_test
dim k as byte
dim userRD_buffer as byte[64]
dim userWR_buffer as byte[64]
sub procedure interrupt
asm
CALL _Hid_InterruptProc
nop
end asm
end sub
sub procedure Init_Main
' Disable all interrupts
' Disable GIE, PEIE, TMR0IE, INT0IE,RBIE
INTCON = 0
INTCON2 = $F5
INTCON3 = $C0
' Disable Priority Levels on interrupts
RCON.IPEN = 0
PIE1 = 0
PIE2 = 0
PIR1 = 0
PIR2 = 0
' Configure all ports with analog function as digital
ADCON1 = ADCON1 or $0F
' Ports
TRISA =
TRISB =
TRISC =
TRISD =
TRISE =
LATA
LATB
LATC
LATD
LATE

=
=
=
=
=

Configuration
0
0
$FF
$FF
$07
0
0
0
0
0

' Clear user RAM
' Banks [00 .. 07] ( 8 x 256 = 2048 Bytes )

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asm
LFSR
MOVLW
CLRF
CPFSEQ
BRA
end asm

FSR0, $000
$08
POSTINC0, 0
FSR0H, 0
$ - 2

' Timer 0
T0CON = $07;
TMR0H = (65536
TMR0L = (65536
INTCON.T0IE =
T0CON.TMR0ON =
end sub

- 156) >> 8
- 156) and $FF
1
' Enable T0IE
1

'** Main Program **
main:
Init_Main()
Hid_Enable(@userRD_buffer, @userWR_buffer)
do
for k = 0 to 255
' Prepare send buffer
userWR_buffer[0] = k
' Send the number via USB
Hid_Write(@userWR_buffer, 1)
next k
loop until FALSE
Hid_Disable
end.

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HW Connection

USB connection scheme

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MISCELLANEOUS LIBRARIES







Button Library
Conversions Library
Math Library
String Library
Time Library
Trigonometry Library

BUTTON LIBRARY
The Button library contains miscellaneous routines useful for a project development.


Button

Button
Prototype
Returns

sub function Button(dim byref port as byte, dim pin, time,
active_state as byte) as byte

Returns 0 or 255.
Function eliminates the influence of contact flickering upon pressing a button
(debouncing).

Description Parameter port specifies the location of the button; parameter pin is the pin
number on designated port and goes from 0..7; parameter time is a debounce
period in milliseconds; parameter active_state can be either 0 or 1, and it
determines if the button is active upon logical zero or logical one.
Requires

Button pin must be configured as input.
Example reads RB0, to which the button is connected; on transition from 1 to 0
(release of button), PORTD is inverted:

Example

524

while true
if Button(PORTB, 0, 1, 1) then
oldstate = 255
end if
if oldstate and Button(PORTB, 0, 1, 0) then
PORTD = not(PORTD)
oldstate = 0
end if
wend

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CONVERSIONS LIBRARY
mikroBasic PRO for PIC Conversions Library provides routines for numerals to
strings and BCD/decimal conversions.

Library Routines
You can get text representation of numerical value by passing it to one of the following routines:










ByteToStr
ShortToStr
WordToStr
IntToStr
LongintToStr
LongWordToStr
FloatToStr
StrToInt
StrToWord

The following sub functions convert decimal values to BCD and vice versa:




Dec2Bcd
Bcd2Dec16
Dec2Bcd16

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ByteToStr
Prototype

sub procedure ByteToStr(dim input as word, dim byref output as
string[2])

Returns

Nothing.
Converts input byte to a string. The output string is right justified and remaining
positions on the left (if any) are filled with blanks.

Description Parameters :



input: byte to be converted
output: destination string

Requires

Nothing.

Example

dim t as word
txt as string[2]
...
t = 24
ByteToStr(t, txt) ' txt is " 24" (one blank here)

ShortToStr
Prototype

sub procedure ShortToStr(dim input as short, dim byref output as
string[3])

Returns

Nothing.
Converts input short (signed byte) number to a string. The output string is right
justified and remaining positions on the left (if any) are filled with blanks.

Description Parameters :



526

input: short number to be converted
output: destination string

Requires

Nothing.

Example

dim t as short
txt as string[3]
...
t = -24
ByteToStr(t, txt) ' txt is " -24" (one blank here)

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WordToStr
Prototype

sub procedure WordToStr(dim input as word, dim byref output as
string[4])

Returns

Nothing.
Converts input word to a string. The output string is right justified and the
remaining positions on the left (if any) are filled with blanks.

Description Parameters :



input: word to be converted
output: destination string

Requires

Nothing.

Example

dim t as word
txt as string[4]
...
t = 437
WordToStr(t, txt) ' txt is "

437" (two blanks here)

IntToStr
Prototype

sub procedure IntToStr(dim input as integer, dim byref output as
string[5]

Returns

Nothing.
Converts input integer number to a string. The output string is right justified and
the remaining positions on the left (if any) are filled with blanks.

Description Parameters :



Requires

Example

input: integer number to be converted
output: destination string

Nothing.
dim input as integer
txt as string[5]
'...
input = -4220
IntToStr(input, txt)

' txt is ' -4220'

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LongintToStr
Prototype

sub procedure LongintToStr(dim input as longint, dim byref output
as string[10])

Returns

Nothing.
Converts input longint number to a string. The output string is right justified and
the remaining positions on the left (if any) are filled with blanks.

Description Parameters :



Requires

Example

input: longint number to be converted
output: destination string

Nothing.
dim input as longint
txt as string[10]
'...
input = -12345678
IntToStr(input, txt)

' txt is '

-12345678'

LongWordToStr
Prototype

sub procedure LongWordToStr(dim input as longword, dim byref output as string[9])

Returns

Nothing.
Converts input double word number to a string. The output string is right justified and the remaining positions on the left (if any) are filled with blanks.

Description Parameters :



Requires

Example

input: double word number to be converted
output: destination string

Nothing.
dim input as longint
txt as string[9]
'...
input = 12345678
IntToStr(input, txt)

528

' txt is '

12345678'

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FloatToStr
Prototype

Returns

sub function FloatToStr(dim input as real, dim byref output as
string[22])





3
2
1
0

if
if
if
if

input number is NaN
input number is -INF
input number is +INF
conversion was successful

Converts a floating point number to a string.
Parameters :

Description




input: floating point number to be converted
output: destination string

The output string is left justified and null terminated after the last digit.
Note: Given floating point number will be truncated to 7 most significant digits
before conversion.
Requires

Nothing.

Example

dim ff1, ff2, ff3 as real
txt as string[22]
...
ff1 = -374.2
ff2 = 123.456789
ff3 = 0.000001234
FloatToStr(ff1, txt)
FloatToStr(ff2, txt)
FloatToStr(ff3, txt)

' txt is "-374.2"
' txt is "123.4567"
' txt is "1.234e-6"

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StrToInt
Prototype

sub function StrToInt(dim byref input as string[6]) as integer

Returns

Integer variable.

Description Converts a string to integer
Requires

The string is assumed to be a correct representation of a number.
dim ii as integer

Example

main:
ii = StrToInt('-1234')
end.

StrToWord
Prototype

sub function StrToWord(dim byref input as string[5]) as word

Returns

Word variable.

Description Converts a string to word.
Requires

input string with length of max 5 chars.
The string is assumed to be a correct representation of a number.
dim ww as word
main:

Example
ww = StrToword('65432')
end.

Dec2Bcd
Prototype

function Dec2Bcd (dim decnum as byte) as byte

Returns

Converted BCD value.
Converts input number to its appropriate BCD representation.

Description Parameters :


530

decnum: number to be converted

Requires

Nothing.

Example

dim a, b as byte
...
a = 22
b = Dec2Bcd(a) ' b equals 34

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Bcd2Dec16
Prototype

sub function Bcd2Dec16(dim bcdnum as word) as word

Returns

Converted decimal value.
Converts 16-bit BCD numeral to its decimal equivalent.

Description Parameters :


bcdnum: 16-bit BCD numeral to be converted

Requires

Nothing.

Example

dim a, b as word
...
a = 0x1234
b = Bcd2Dec16(a)

' a equals 4660
' b equals 1234

Dec2Bcd16
Prototype

sub function Dec2Bcd16(dim decnum as word) as word

Returns

Converted BCD value.
Converts decimal value to its BCD equivalent.

Description Parameters :


decnum decimal number to be converted

Requires

Nothing.

Example

dim a, b as word
...
a = 2345
b = Dec2Bcd16(a)

' b equals 9029

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MATH LIBRARY

The mikroBasic PRO for PIC provides a set of library functions for floating point
math handling. See also Predefined Globals and Constants for the list of predefined
math constants.

Library Functions























532

acos
asin
atan
atan2
ceil
cos
cosh
eval_poly
exp
fabs
floor
frexp
dexp
log
log10
modf
pow
sin
sinh
sqrt
tan
tanh

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acos
Prototype

sub function acos(dim x as real) as real

The function returns the arc cosine of parameter x; that is, the value whose
Description cosine is x. The input parameter x must be between -1 and 1 (inclusive). The
return value is in radians, between 0 and Π (inclusive).

asin
Prototype

sub function asin(dim x as real) as real

The function returns the arc sine of parameter x; that is, the value whose sine is
Description x. The input parameter x must be between -1 and 1 (inclusive). The return
value is in radians, between - Π/2 and Π/2 (inclusive).

atan
Prototype

sub function atan(dim arg as real) as real

The function computes the arc tangent of parameter arg; that is, the value
Description whose tangent is arg. The return value is in radians, between -Π/2 and Π/2
(inclusive).

atan2
Prototype

sub function atan2(dim y as real, dim x as real) as real

This is the two-argument arc tangent function. It is similar to computing the arc
tangent of y/x, except that the signs of both arguments are used to determine
Description
the quadrant of the result and x is permitted to be zero. The return value is in
radians, between -Π and Π (inclusive).

ceil
Prototype

sub function ceil(dim x as real) as real

Description The function returns value of parameter x rounded up to the next whole number.

cos
Prototype

sub function cos(dim arg as real) as real

Description The function returns the cosine of arg in radians. The return value is from -1 to 1.

cosh
Prototype

sub function cosh(dim x as real) as real

Description

The function returns the hyperbolic cosine of x, defined mathematically as
(ex+e-x)/2. If the value of x is too large (if overflow occurs), the function fails.

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eval_poly
Prototype

sub function eval_poly(dim x as real, dim byref d as array[10] of
real, dim n as integer) as real

Description

Function Calculates polynom for number x, with coefficients stored in d[], for
degree n.

exp
Prototype

sub function exp(dim x as real) as real

Description

The function returns the value of e — the base of natural logarithms — raised to
the power x (i.e. ex).

fabs
Prototype

sub function fabs(dim d as real) as real

Description The function returns the absolute (i.e. positive) value of d.

floor
Prototype

sub function floor(dim x as real) as real

Description The function returns the value of parameter x rounded down to the nearest integer.

frexp
Prototype

sub function frexp(dim value as real, dim byref eptr as integer)
as real

The function splits a floating-point value value into a normalized fraction and an
Description integral power of 2. The return value is a normalized fraction and the integer
exponent is stored in the object pointed to by eptr.

ldexp
Prototype

sub function ldexp(dim value as real, dim newexp as integer) as
real

Description

The function returns the result of multiplying the floating-point number value by
2 raised to the power newexp (i.e. returns value * 2newexp).

log
Prototype

sub function log(dim x as real) as real

Description The function returns the natural logarithm of x (i.e. loge(x)).

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log10
Prototype

sub function log10(dim x as real) as real

Description The function returns the base-10 logarithm of x (i.e. log10(x)).

modf
Prototype

sub function modf(dim val as real, dim byref iptr as real) as
real

Description

The function returns the signed fractional component of val, placing its whole
number component into the variable pointed to by iptr.

pow
Prototype

sub function pow(dim x as real, dim y as real) as real

Description

The function returns the value of x raised to the power y (i.e. xy). If x is negative, the function will automatically cast y into longint.

sin
Prototype

sub function sin(dim arg as real) as real

Description The function returns the sine of arg in radians. The return value is from -1 to 1.

sinh
Prototype

sub function sinh(dim x as real) as real

Description

The function returns the hyperbolic sine of x, defined mathematically as (ex-e-x)/2.
If the value of x is too large (if overflow occurs), the function fails.

sqrt
Prototype

sub function sqrt(dim x as real) as real

Description The function returns the non negative square root of x.

tan
Prototype

sub function tan(dim x as real) as real

Description

The function returns the tangent of x in radians. The return value spans the
allowed range of floating point in mikroBasic PRO for PIC.

tanh
Prototype

sub function tanh(dim x as real) as real)

Description

The function returns the hyperbolic tangent of x, defined mathematically as
sinh(x)/cosh(x).

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STRING LIBRARY

The mikroBasic PRO for PIC includes a library which automatizes string related
tasks

Library Functions



















536

memchr
memcmp
memcpy
memmove
memset
strcat
strchr
strcmp
strcpy
strlen
strncat
strncpy
strspn
strcspn
strncmp
strpbrk
strrchr
strstr

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memchr
Prototype

sub function memchr(dim p as ^byte, dim ch as byte, dim n as
word) as word

The function locates the first occurrence of the word ch in the initial n words of
memory area starting at the address p. The function returns the offset of this
occurrence from the memory address p or 0xFF if ch was not found.
Description
For the parameter p you can use either a numerical value (literal/variable/constant) indicating memory address or a dereferenced value of an object, for
example @mystring or @PORTB.

memcmp
Prototype

sub function memcmp(dim p1, p2 as ^byte, dim n as word) as integer

The function returns a positive, negative, or zero value indicating the relationship of first n words of memory areas starting at addresses p1 and p2.
This function compares two memory areas starting at addresses p1 and p2 for n
words and returns a value indicating their relationship as follows:
Value
< 0
Description = 0
> 0

Meaning
p1 "less than" p2
p1 "equal to" p2
p1 "greater than" p2

The value returned by the function is determined by the difference between the
values of the first pair of words that differ in the strings being compared.
For parameters p1 and p2 you can use either a numerical value (literal/variable/constant) indicating memory address or a dereferenced value of an object,
for example @mystring or @PORTB.

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memcpy
Prototype

Description

sub procedure memcpy(dim p1, p2 as ^byte, dim nn as word)

The function copies nn words from the memory area starting at the address p2
to the memory area starting at p1. If these memory buffers overlap, the memcpy
function cannot guarantee that words are copied before being overwritten. If
these buffers do overlap, use the memmove function.
For parameters p1 and p2 you can use either a numerical value (literal/variable/constant) indicating memory address or a dereferenced value of an object,
for example @mystring or @PORTB.

memmove
Prototype

sub procedure memmove(dim p1, p2, as ^byte, dim nn as word)

The function copies nn words from the memory area starting at the address p2 to the
memory area starting at p1. If these memory buffers overlap, the Memmove function
ensures that the words in p2 are copied to p1 before being overwritten.
Description
For parameters p1 and p2 you can use either a numerical value (literal/variable/constant) indicating memory address or a dereferenced value of an object,
for example @mystring or @PORTB.

memset
Prototype

sub procedure memset(dim p as ^byte, dim character as byte, dim n
as word)

The function fills the first n words in the memory area starting at the address p
with the value of word character.
Description

For parameter p you can use either a numerical value (literal/variable/constant)
indicating memory address or a dereferenced value of an object, for example
@mystring or @PORTB.

strcat

538

Prototype

sub procedure strcat(dim byref s1, s2 as string[100])

Description

The function appends the value of string s2 to string s1 and terminates s1 with
a null character.

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strchr
Prototype

sub function strchr(dim byref s as string[100], dim ch as byte)
as word

The function searches the string s for the first occurrence of the character ch.
The null character terminating s is not included in the search.
Description
The function returns the position (index) of the first character ch found in s; if no
matching character was found, the function returns 0xFF.

strcmp
Prototype

sub function strcmp(dim byref s1, s2 as string[100]) as short

The function lexicographically compares the contents of the strings s1 and s2
and returns a value indicating their relationship:
Value
< 0
Description = 0
> 0

Meaning
s1 "less than" s2
s1 "equal to" s2
s1 "greater than" s2

The value returned by the function is determined by the difference between the
values of the first pair of words that differ in the strings being compared.

strcpy
Prototype

sub procedure strcpy(dim byref s1, s2 as string[100])

Description

The function copies the value of the string s2 to the string s1 and appends a
null character to the end of s1.

strcspn
Prototype

sub function strcspn(dim byref s1, s2 as string[100]) as word

The function searches the string s1 for any of the characters in the string s2.
Description

The function returns the index of the first character located in s1 that matches
any character in s2. If the first character in s1 matches a character in s2, a
value of 0 is returned. If there are no matching characters in s1, the length of
the string is returned (not including the terminating null character).

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strlen
Prototype

sub function strlen(dim byref s as string[100]) as word

Description

The function returns the length, in words, of the string s. The length does not
include the null terminating character.

strncat
Prototype

sub procedure strncat(dim byref s1, s2 as string[100], dim size
byte)

The function appends at most size characters from the string s2 to the string s1
Description and terminates s1 with a null character. If s2 is shorter than the size characters, s2 is copied up to and including the null terminating character.

strncmp
Prototype

sub function strncmp(dim byref s1, s2 as string[100], dim len as
byte) as short

The function lexicographically compares the first len words of the strings s1 and
s2 and returns a value indicating their relationship:
Value
< 0
Description = 0
> 0

Meaning
s1 "less than" s2
s1 "equal to" s2
s1 "greater than" s2

The value returned by the function is determined by the difference between the
values of the first pair of words that differ in the strings being compared (within
first len words).

strncpy
Prototype

sub procedure strncpy(dim byref s1, s2 as string[100], dim size
as word)

The function copies at most size characters from the string s2 to the string s1.
Description If s2 contains fewer characters than size, s1 is padded out with null characters
up to the total length of the size characters.

strpbrk
Prototype

sub function strpbrk(dim byref s1, s2 as string[100]) as word

The function searches s1 for the first occurrence of any character from the
string s2. The null terminator is not included in the search. The function returns
Description
an index of the matching character in s1. If s1 contains no characters from s2,
the function returns 0xFF.

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strrchr
Prototype

sub function strrchr(dim byref s as string[100], dim ch as byte)
as word

The function searches the string s for the last occurrence of the character ch.
The null character terminating s is not included in the search. The function
Description
returns an index of the last ch found in s; if no matching character was found,
the function returns 0xFF.

strspn
Prototype

sub function strspn(dim byref s1, s2 as string[100]) as byte

The function searches the string s1 for characters not found in the s2 string.
Description

The function returns the index of first character located in s1 that does not
match a character in s2. If the first character in s1 does not match a character in
s2, a value of 0 is returned. If all characters in s1 are found in s2, the length of
s1 is returned (not including the terminating null character).

strstr
Prototype

sub function strstr(dim byref s1, s2 as string[100]) as word

The function locates the first occurrence of the string s2 in the string s1 (excluding the terminating null character).
Description

The function returns a number indicating the position of the first occurrence of
s2 in s1; if no string was found, the function returns 0xFF. If s2 is a null string,
the function returns 0.

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TIME LIBRARY

The Time Library contains functions and type definitions for time calculations in the UNIX time format which counts the number of seconds since the "epoch". This is very convenient for programs
that work with time intervals: the difference between two UNIX time values is a real-time difference measured in seconds.
What is the epoch?
Originally it was defined as the beginning of 1970 GMT. ( January 1, 1970 Julian day ) GMT,
Greenwich Mean Time, is a traditional term for the time zone in England.
The TimeStruct type is a structure type suitable for time and date storage.

Library Routines
 Time_dateToEpoch
 Time_epochToDate
 Time_datediff

Time_dateToEpoch
Prototype

sub function Time_dateToEpoch(dim byref ts as TimeStruct) as
longint

Returns

Number of seconds since January 1, 1970 0h00mn00s.
This function returns the UNIX time : number of seconds since January 1, 1970
0h00mn00s.

Description

Parameters :
 ts: time and date value for calculating UNIX time.

542

Requires

Nothing.

Example

dim ts1 as TimeStruct
Epoch as longint
...
' what is the epoch of the date in ts ?
epoch = Time_dateToEpoch(ts1)

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Time_epochToDate
Prototype

sub procedure Time_epochToDate(dim e as longint, dim byref ts as
TimeStruct)

Returns

Nothing.
Converts the UNIX time to time and date.

Description

Parameters :



e: UNIX time (seconds since UNIX epoch)
ts: time and date structure for storing conversion output

Requires

Nothing.

Example

dim ts2 as TimeStruct
epoch as longint
...
' what date is epoch 1234567890 ?
epoch = 1234567890
Time_epochToDate(epoch,ts2)

Time_dateDiff
Prototype

sub function Time_dateDiff(dim t1 as ^TimeStruct, dim t2 as
^TimeStruct) as longint

Returns

Time difference in seconds as a signed long.
This function compares two dates and returns time difference in seconds as a
signed long. The result is positive if t1 is before t2, null if t1 is the same as t2
and negative if t1 is after t2.

Description

Parameters :



t1: time and date structure (the first comparison parameter)
t2: time and date structure (the second comparison parameter)

Requires

Nothing.

Example

dim ts1, ts2 as TimeStruct
diff as longint
...
' how many seconds between these two dates contained in ts1 and
ts2 buffers?
diff = Time_dateDiff(ts1, ts2)

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Library Example

Demonstration of Time library routines usage for time calculations in UNIX time format.
program Time_Demo
dim epoch, diff as longint
'***********************************
ts1, ts2 as TimeStruct
'***********************************
main:
ts1.ss
ts1.mn
ts1.hh
ts1.md
ts1.mo
ts1.yy

=
=
=
=
=
=

0
7
17
23
5
2006

' *
' * What is the epoch of the date in ts ?
' *
epoch = Time_dateToEpoch(@ts1)
' 1148404020
' *
' * What date is epoch 1234567890 ?
' *
epoch = 1234567890
Time_epochToDate(epoch, @ts2)
' {0x1E, 0x1F, 0x17, 0x0D, 0x04,
0x02, 0x07D9)
' *
' * How much seconds between this two dates ?
' *
diff = Time_dateDiff(@ts1, @ts2)
' 86163870
end.

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TimeStruct type definition
structure TimeStruct
dim ss as byte
dim mn as byte
dim hh as byte
dim md as byte
dim wd as byte
day=6
dim mo as byte
to 11 as with unix C
dim yy as word
end structure

'
'
'
'
'

seconds
minutes
hours
day in month, from 1 to 31
day in week, monday=0, tuesday=1, .... sun-

' month number, from 1 to 12 (and not from 0
time !)
' year Y2K compliant, from 1892 to 2038

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TRIGONOMETRY LIBRARY

The mikroBasic PRO for PIC implements fundamental trigonometry functions. These functions
are implemented as look-up tables. Trigonometry functions are implemented in integer format in
order to save memory.

Library Routines



sinE3
cosE3

sinE3
Prototype

sub function sinE3(dim angle_deg as word) as integer

Returns

The function returns the sine of input parameter.
The function calculates sine multiplied by 1000 and rounded to the nearest integer:
result = round(sin(angle_deg)*1000)

Description Parameters:


angle_deg: input angle in degrees

Note: Return value range: -1000..1000.

546

Requires

Nothing.

Example

dim res as integer
...
res = sinE3(45) ' result is 707

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cosE3
Prototype

sub function cosE3(dim angle_deg as word) as integer

Returns

The function returns the cosine of input parameter.
The function calculates cosine multiplied by 1000 and rounded to the nearest
integer:
result = round(cos(angle_deg)*1000)

Description
Parameters:


angle_deg: input angle in degrees

Note: Return value range: -1000..1000.
Requires

Nothing.

Example

dim res as integer
...
res = cosE3(196) ' result is -193

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Source Exif Data:

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Modify Date                     : 2009:05:06 10:31:46+02:00
Create Date                     : 2009:04:24 14:59:15+02:00
Metadata Date                   : 2009:05:06 10:31:46+02:00
Format                          : application/pdf
Title                           : mikroBasic PRO for PIC User Manual v100
Creator                         : mikroElektronika
Description                     : mikroBasic PRO for PIC
Subject                         : mikroBasic, PRO, for, PIC, User, Manual, v100, mikroelektronika, basic, compiler, microchip, p18, p16, tutorial, examples
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Author                          : mikroElektronika
Keywords                        : mikroBasic, PRO, for, PIC, User, Manual, v100, mikroelektronika, basic, compiler, microchip, p18, p16, tutorial, examples

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