RCM3700 User's Manual Rabbit 3000 019 0136 L
User Manual: Rabbit 3000
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RabbitCore RCM3700 C-Programmable Core Module with Ethernet, Serial Flash, and Enhanced Software User’s Manual 019–0136_L RabbitCore RCM3700 User’s Manual Part Number 019-0136_L • Printed in U.S.A. ©2003–2010 Digi International Inc. • All rights reserved. Digi International reserves the right to make changes and improvements to its products without providing notice. Trademarks Rabbit, RabbitCore, and Dynamic C are registered trademarks of Digi International Inc. Rabbit 3000 is a trademark of Digi International Inc. The latest revision of this manual is available on the Rabbit Web site, www.rabbit.com, for free, unregistered download. Rabbit Semiconductor Inc. www.rabbit.com RabbitCore RCM3700 TABLE OF CONTENTS Chapter 1. Introduction 4 1.1 RCM3700 Features ...............................................................................................................................4 1.2 Advantages of the RCM3700 ...............................................................................................................6 1.3 Development and Evaluation Tools......................................................................................................7 1.3.1 Development Kit ...........................................................................................................................7 1.3.2 Software ........................................................................................................................................8 1.3.3 Application Kits ............................................................................................................................8 1.3.4 Online Documentation ..................................................................................................................8 Chapter 2. Getting Started 9 2.1 Step 1 — Install Dynamic C .................................................................................................................9 2.2 Hardware Connections........................................................................................................................10 2.2.1 Step 1 — Attach Module to Prototyping Board..........................................................................10 2.2.2 Step 2 — Connect Programming Cable......................................................................................11 2.2.3 Step 3 — Connect Power ............................................................................................................12 2.2.3.1 Overseas Development Kits ............................................................................................... 12 2.3 Starting Dynamic C ............................................................................................................................13 2.4 Run a Sample Program .......................................................................................................................13 2.4.1 Troubleshooting ..........................................................................................................................13 2.5 Where Do I Go From Here? ...............................................................................................................14 2.5.1 Technical Support .......................................................................................................................14 Chapter 3. Running Sample Programs 15 3.1 Introduction.........................................................................................................................................15 3.2 Sample Programs ................................................................................................................................17 3.2.1 Use of Serial Flash ......................................................................................................................19 3.2.2 Serial Communication.................................................................................................................19 3.2.3 A/D Converter Inputs..................................................................................................................22 Chapter 4. Hardware Reference 25 4.1 RCM3700 Digital Inputs and Outputs ................................................................................................26 4.1.1 Memory I/O Interface .................................................................................................................30 4.1.2 Other Inputs and Outputs ............................................................................................................30 4.2 Serial Communication ........................................................................................................................31 4.2.1 Serial Ports ..................................................................................................................................31 4.2.2 Ethernet Port ...............................................................................................................................32 4.2.3 Serial Programming Port.............................................................................................................33 4.3 Serial Programming Cable..................................................................................................................34 4.3.1 Changing Between Program Mode and Run Mode ....................................................................34 4.3.2 Standalone Operation of the RCM3700......................................................................................35 4.4 Other Hardware...................................................................................................................................36 4.4.1 Clock Doubler .............................................................................................................................36 4.4.2 Spectrum Spreader ......................................................................................................................36 RabbitCore RCM3700 User’s Manual 1 4.5 Memory...............................................................................................................................................37 4.5.1 SRAM .........................................................................................................................................37 4.5.2 Flash EPROM .............................................................................................................................37 4.5.3 Serial Flash..................................................................................................................................37 4.5.4 Dynamic C BIOS Source Files ...................................................................................................37 Chapter 5. Software Reference 38 5.1 More About Dynamic C .....................................................................................................................38 5.2 Dynamic C Functions .........................................................................................................................40 5.2.1 Board Initialization .....................................................................................................................41 5.2.2 Analog Inputs..............................................................................................................................42 5.2.3 Digital I/O ...................................................................................................................................58 5.2.4 Serial Communication Drivers....................................................................................................59 5.2.5 Serial Flash..................................................................................................................................59 5.2.6 TCP/IP Drivers............................................................................................................................59 5.3 Upgrading Dynamic C ........................................................................................................................60 5.3.1 Extras ..........................................................................................................................................60 5.3.1.1 Featured Application Kit.................................................................................................... 60 Chapter 6. Using the TCP/IP Features 61 6.1 TCP/IP Connections ...........................................................................................................................61 6.2 TCP/IP Primer on IP Addresses..........................................................................................................63 6.2.1 IP Addresses Explained ..............................................................................................................65 6.2.2 How IP Addresses are Used........................................................................................................66 6.2.3 Dynamically Assigned Internet Addresses .................................................................................67 6.3 Placing Your Device on the Network .................................................................................................68 6.4 Running TCP/IP Sample Programs ....................................................................................................69 6.4.1 How to Set IP Addresses in the Sample Programs .....................................................................70 6.4.2 How to Set Up your Computer for Direct Connect ....................................................................71 6.5 Run the PINGME.C Sample Program ................................................................................................72 6.6 Running Additional Sample Programs With Direct Connect .............................................................72 6.6.1 RabbitWeb Sample Programs .....................................................................................................73 6.6.2 Secure Sockets Layer (SSL) Sample Programs ..........................................................................74 6.6.3 Dynamic C FAT File System, RabbitWeb, and SSL Modules...................................................74 6.7 Where Do I Go From Here? ...............................................................................................................76 Appendix A. RCM3700 Specifications 77 A.1 Electrical and Mechanical Characteristics .........................................................................................78 A.1.1 Headers.......................................................................................................................................81 A.2 Bus Loading .......................................................................................................................................82 A.3 Rabbit 3000 DC Characteristics.........................................................................................................85 A.4 I/O Buffer Sourcing and Sinking Limit .............................................................................................86 A.5 Conformal Coating.............................................................................................................................87 A.6 Jumper Configurations.......................................................................................................................88 Appendix B. Prototyping Board 90 B.1 RCM3700 Prototyping Board ............................................................................................................91 B.1.1 Features ......................................................................................................................................92 B.1.2 Mechanical Dimensions and Layout ..........................................................................................94 B.1.3 Power Supply .............................................................................................................................95 B.1.4 Using the RCM3700 Prototyping Board ....................................................................................96 B.1.4.1 Adding Other Components................................................................................................ 97 B.1.5 Analog Features..........................................................................................................................98 B.1.5.1 A/D Converter Inputs ........................................................................................................ 98 B.1.5.2 Thermistor Input .............................................................................................................. 100 B.1.5.3 Other A/D Converter Features......................................................................................... 101 B.1.5.4 A/D Converter Calibration .............................................................................................. 102 RabbitCore RCM3700 User’s Manual 2 B.1.6 Serial Communication..............................................................................................................103 B.1.6.1 RS-232 ............................................................................................................................. 104 B.1.6.2 RS-485 ............................................................................................................................. 105 B.1.7 Other Prototyping Board Modules ...........................................................................................107 B.1.8 Jumper Configurations .............................................................................................................108 B.1.9 Use of Rabbit 3000 Parallel Ports ............................................................................................110 B.2 RCM3720 Prototyping Board ..........................................................................................................112 B.2.1 Features ....................................................................................................................................113 B.2.2 Mechanical Dimensions and Layout ........................................................................................114 B.2.3 Power Supply ...........................................................................................................................115 B.2.4 Using the RCM3720 Prototyping Board ..................................................................................116 B.2.4.1 Prototyping Area.............................................................................................................. 118 B.2.5 Serial Communication..............................................................................................................119 B.2.6 Use of Rabbit 3000 Parallel Ports ............................................................................................121 Appendix C. LCD/Keypad Module 123 C.1 Specifications ...................................................................................................................................123 C.2 Contrast Adjustments for All Boards ...............................................................................................125 C.3 Keypad Labeling ..............................................................................................................................126 C.4 Header Pinouts .................................................................................................................................127 C.4.1 I/O Address Assignments .........................................................................................................127 C.5 Install Connectors on Prototyping Board .........................................................................................128 C.6 Mounting LCD/Keypad Module on the Prototyping Board ............................................................129 C.7 Bezel-Mount Installation..................................................................................................................130 C.7.1 Connect the LCD/Keypad Module to Your Prototyping Board...............................................132 C.8 Sample Programs .............................................................................................................................133 C.9 LCD/Keypad Module Function Calls ..............................................................................................134 C.9.1 LCD/Keypad Module Initialization..........................................................................................134 C.9.2 LEDs.........................................................................................................................................134 C.9.3 LCD Display.............................................................................................................................135 C.9.4 Keypad......................................................................................................................................155 Appendix D. Power Supply 158 D.1 Power Supplies.................................................................................................................................158 D.1.1 Battery Backup.........................................................................................................................159 D.1.2 Battery-Backup Circuit ............................................................................................................160 D.1.3 Reset Generator ........................................................................................................................160 Appendix E. Secure Embedded Web Application Kit 161 E.1 Sample Programs..............................................................................................................................162 E.2 Module Documentation ....................................................................................................................162 Index 163 Schematics 167 RabbitCore RCM3700 User’s Manual 3 1. INTRODUCTION The RCM3700 is a compact module that incorporates the latest revision of the powerful Rabbit® 3000 microprocessor, flash memory, onboard serial flash, static RAM, and digital I/O ports. Throughout this manual, the term RCM3700 refers to the complete series of RCM3700 RabbitCore modules unless other production models are referred to specifically. The RCM3700 has a Rabbit 3000 microprocessor operating at 22.1 MHz, static RAM, flash memory, two clocks (main oscillator and real-time clock), and the circuitry necessary for reset and management of battery backup of the Rabbit 3000’s internal real-time clock and the static RAM. One 40-pin header brings out the Rabbit 3000 I/O bus lines, parallel ports, and serial ports. The RCM3700 receives its +5 V power from the customer-supplied motherboard on which it is mounted. The RCM3700 can interface with all kinds of CMOS-compatible digital devices through the motherboard. The Development Kit and the Ethernet Connection Kit have what you need to design your own microprocessor-based system: a complete Dynamic C software development system with optional modules and a Prototyping Board that acts as a motherboard to allow you to evaluate the RCM3700 and to prototype circuits that interface to the RCM3700 module. 1.1 RCM3700 Features • Small size: 1.20" x 2.95" x 0.98" (30 mm x 75 mm x 25 mm) • Microprocessor: latest revision of Rabbit 3000 running at 22.1 MHz supports Dynamic C Secure Sockets Layer (SSL) module for added security • 33 parallel 5 V tolerant I/O lines: 31 configurable for I/O, 2 fixed outputs • External reset I/O • Alternate I/O bus can be configured for 8 data lines and 5 address lines (shared with parallel I/O lines), I/O read/write • Ten 8-bit timers (six cascadable) and one 10-bit timer with two match registers • 512K flash memory and 512K SRAM (options for 256K flash memory and 128K SRAM) RabbitCore RCM3700 User’s Manual 4 • 1 Mbyte serial flash memory, which is required to run the optional Dynamic C FAT file system • Real-time clock • Watchdog supervisor • Provision for customer-supplied backup battery via connections on header J1 • 10-bit free-running PWM counter and four pulse-width registers • Two-channel Input Capture can be used to time input signals from various port pins • Two-channel Quadrature Decoder accepts inputs from external incremental encoder modules • Four available 3.3 V CMOS-compatible serial ports: maximum asynchronous baud rate of 2.76 Mbps. Three ports are configurable as a clocked serial port (SPI), and one port is configurable as an HDLC serial port. Shared connections to the Rabbit microprocessor make a second HDLC serial port available at the expense of two of the SPI configurable ports, giving you two HDLC ports and one asynchronous/SPI serial port. • Supports 1.15 Mbps IrDA transceiver There are three RCM3700 production models. Table 1 below summarizes their main features. Table 1. RCM3700 Features Feature RCM3700 RCM3710 RCM3720 Rabbit 3000® running at 22.1 MHz Microprocessor Flash Memory 512K 256K 512K SRAM 512K 128K 256K Serial Flash Memory Serial Ports 1 Mbyte 4 shared high-speed, 3.3 V CMOS-compatible ports: all 4 are configurable as asynchronous serial ports; 3 are configurable as a clocked serial port (SPI) and 1 is configurable as an HDLC serial port; option for second HDLC serial port at the expense of 2 clocked serial ports (SPI) The RCM3700 is programmed over a standard PC serial port through a programming cable supplied with the Development Kit or the Ethernet Connection Kit, and can also be programed through a USB port with an RS-232/USB converter or over an Ethernet with the RabbitLink (both available from Rabbit). Mounting holes were introduced on opposite corners of the RCM3700 in 2009. Appendix A provides detailed specifications for the RCM3700. RabbitCore RCM3700 User’s Manual 5 1.2 Advantages of the RCM3700 • Fast time to market using a fully engineered, “ready-to-run/ready-to-program” microprocessor core. • Competitive pricing when compared with the alternative of purchasing and assembling individual components. • Easy C-language program development and debugging • Rabbit Field Utility to download compiled Dynamic C .bin files, and cloning board options for rapid production loading of programs. • Generous memory size allows large programs with tens of thousands of lines of code, and substantial data storage. • Integrated Ethernet port for network connectivity, with royalty-free TCP/IP software. • Ideal for network-enabling security and access systems, home automation, HVAC systems, and industrial controls RabbitCore RCM3700 User’s Manual 6 1.3 Development and Evaluation Tools 1.3.1 Development Kit The Development Kit contains the hardware and software needed to use the RCM3700. • RCM3700 module. • RCM3700 Prototyping Board. • Universal AC adapter, 12 V DC, 1 A (includes Canada/Japan/U.S., Australia/N.Z., U.K., and European style plugs). • Programming cable with 10-pin header and DE9 connections, and integrated levelmatching circuitry. • Cable kits to access RS-485 and analog input connectors on Prototyping Board. • Dynamic C CD-ROM, with complete product documentation on disk. • Getting Started instructions. • Accessory parts for use on the Prototyping Board. • Rabbit 3000 Processor Easy Reference poster. • Registration card. RabbitCore RCM3700 The RCM3700 RabbitCore module features built-in built-in Ethernet and onboard mass storage (serial flash) in addition to 33 I/O lines. These Getting Started instructions included with the Development Kit will help you get your RCM3700 up and running so that you can run the sample programs to explore its capabilities and develop your own applications. Development Kit Contents The RCM3700 Development Kit contains the following items: t RCM3700 module. t Prototyping Board. t Universal AC adapter, 12 V DC, 1 A (includes Canada/Japan/U.S., Australia/N.Z., U.K., and European style plugs). t Programming cable with 10-pin header and DB9 connections, and integrated level-matching circuitry. t Cable kits to access RS-485 and analog input connectors on Prototyping Board. t Dynamic C CD-ROM, with complete product documentation on disk. t Getting Started instructions. t Accessory parts for use on the Prototyping Board. t Rabbit 3000 Processor Easy Reference poster. t Registration card. Visit our online Rabbit store at www.rabbit.com/store/ for the latest information on peripherals and accessories that are available for the RCM3700 RabbitCore modules. Step 1 — Install Dynamic C® Before doing any development, you must install Dynamic C. Insert the CD from the Development Kit in your PC’s CD-ROM drive. If the installation does not auto-start, run the setup .exe program in the root directory of the Dynamic C CD. Install any Dynamic C modules after you install Dynamic C. Rabbit and Dynamic C are registered trademarks of Digi International Inc. Figure 1. RCM3700 Development Kit RabbitCore RCM3700 User’s Manual 7 1.3.2 Software The RCM3700 is programmed using version 8.11 or later of Dynamic C. Dynamic C v. 9.60 includes the popular µC/OS-II real-time operating system, point-to-point protocol (PPP), FAT file system, RabbitWeb, and other select libraries that were previously sold as indidual Dynamic C modules. Rabbit also offers for purchase the Rabbit Embedded Security Pack featuring the Secure Sockets Layer (SSL) and a specific Advanced Encryption Standard (AES) library. In addition to the Web-based technical support included at no extra charge, a one-year telephonebased technical support subscription is also available for purchase. Visit our Web site at www.rabbit.com for further information and complete documentation, or contact your Rabbit sales representative or authorized distributor. 1.3.3 Application Kits Rabbit also has application kits featuring the RCM3700 to provide the exact software and other tools that will enable to tailor your RCM3700 for specific applications. • Secure Embedded Web Application Kit (Rabbit Part No. 101-0898)—comes with three CD-ROMs that have the Dynamic C RabbitWeb, FAT File System, and Secure Sockets Layer (SSL) modules, and includes Dynamic C 8.51 or a later version and an RCM3700. This enhanced software bundle facilitates the rapid development of secure Web browser interfaces for embedded system control. Appendix E provides additional information about the Secure Embedded Web Application Kit. • Ethernet Connection Kit (Rabbit Part No. 101-0964)—comes with one CD-ROM that includes Dynamic C 9.01 or a later version, an RCM3720 module, and an RCM3720 Prototyping Board. This kit is intended to demonstrate and help you develop Ethernetbased applications. Visit our Web site at www.rabbit.com or contact your Rabbit sales representative or authorized distributor for further information. 1.3.4 Online Documentation The online documentation is installed along with Dynamic C, and an icon for the documentation menu is placed on the workstation’s desktop. Double-click this icon to reach the menu. If the icon is missing, use your browser to find and load default.htm in the docs folder, found in the Dynamic C installation folder. Each Dynamic C module has complete documentation available with the online documentation described above. The latest versions of all documents are always available for free, unregistered download from our Web sites as well. RabbitCore RCM3700 User’s Manual 8 2. GETTING STARTED This chapter describes the RCM3700 hardware in more detail, and explains how to set up and use the accompanying Prototyping Board. NOTE: It is assumed that you have the RCM3700 Development Kit. If you purchased an RCM3700 module by itself, you will have to adapt the information in this chapter and elsewhere to your test and development setup. 2.1 Step 1 — Install Dynamic C To develop and debug programs for the RCM3700 (and for all other Rabbit hardware), you must install and use Dynamic C. If you have not yet installed Dynamic C version 8.11 (or a later version), do so now by inserting the Dynamic C CD from the RCM3700 Development Kit in your PC’s CD-ROM drive. If autorun is enabled, the CD installation will begin automatically. If autorun is disabled or the installation otherwise does not start, use the Windows Start | Run menu or Windows Disk Explorer to launch setup.exe from the root folder of the CD-ROM. The installation program will guide you through the installation process. Most steps of the process are self-explanatory. Dynamic C uses a COM (serial) port to communicate with the target development system. The installation allows you to choose the COM port that will be used. The default selection is COM1. You may select any available port for Dynamic C’s use. If you are not certain which port is available, select COM1. This selection can be changed later within Dynamic C. NOTE: The installation utility does not check the selected COM port in any way. Specifying a port in use by another device (mouse, modem, etc.) may lead to a message such as "could not open serial port" when Dynamic C is started. Once your installation is complete, you will have up to three icons on your PC desktop. One icon is for Dynamic C, one opens the documentation menu, and the third is for the Rabbit Field Utility, a tool used to download precompiled software to a target system. If you have purchased any of the optional Dynamic C modules, install them after installing Dynamic C. The modules may be installed in any order. You must install the modules in the same directory where Dynamic C was installed. RabbitCore RCM3700 User’s Manual 9 2.2 Hardware Connections There are three steps to connecting the Prototyping Board for use with Dynamic C and the sample programs: 1. Attach the RCM3700 module to the Prototyping Board. 2. Connect the programming cable between the RCM3700 and the COM port on the workstation PC. 3. Connect the power supply to the Prototyping Board. The connections are shown for the RCM3700 Prototyping Board, and are similar for the RCM3720 Prototyping Board. 2.2.1 Step 1 — Attach Module to Prototyping Board Turn the RCM3700 module so that the Ethernet jack is on the left as shown in Figure 2 below. Insert the module’s J1 header into the TCM_SMT_SOCKET socket on the Prototyping Board. The shaded corner notch at the bottom right corner of the RCM3700 module should face the same direction as the corresponding notch below it on the Prototyping Board. Align shaded corners RXC TXC RXE NC GND D4 D2 D0 A1 A3 GND LED6 LED4 LED2 LED0 /RSTET +V D6 +5V GND +3.3V D7 D5 D3 A0 A2 GND GND LED5 D1 A1 D0 D2 D4 D6 GND A1 D1 D3 D5 D7 GND CX5 JP7 CX6 C8 U11 T1 Y3 C57 R29 R31 C22 R27 CX7 R28 C35 UX2 R43 00 C34 AIN C32 C33 01 03 CX8 R41 R42 02 C30 C31 04 R39 R40 R35 R36 CX11 AGND AGND VREF C29 R44 THERM_IN R37 THERMISTOR CONVERT R31 R32 R33 R34 AIN R38 06 JP8 J7 05 R30 R29 DS1 CX9 CX10 DS3 DS2 J8 R48 RCM36/37XX SERIES PROTOTYPING BOARD LCD1JC CX4 NC NC JP6 NC NC JP5 NC NC C28 LCD1JB A3 CX3 A2 VBAT /RESET PD4 CX2 UX1 R26 /CS PE1 /CS R24 LED3 PE5 RP1 JP4 U8 PC0_TXD +V CX1 LED1 PG7_RXE +BKLT PE0 PG6 TXE PD5 GND PC1/PG2 LED6 PF6 LED4 PF5 PF7 PC3/ PG3 PC2 TXC PE4 LCD1JA GND PF4 BT1 LED2 PF1 R15 GND +5V LDE0 /RES LED5 PB0 PF0 LED3 PA6 PA7 R14 LED1 PA5 +5V DS2 U7 PA3 PB7 DCIN U2 C18 U6 C17 U5 GND R32 R30 R27 1 2 R22 R23 C24 C25 PA0 +3.3V PA6 PA4 PA2 PA0 PF0 PB2 PB4 PB7 PC1/ PF7 PG2 PF5 PD4 J3 GND GND /IOWR PG7 RXE C20 PE1 C21 L2 R18 R19 R20 C23 GND TXE TXD RXD GND PA1 PF1 PB0 PB3 PB5 PF6 PC0_TXD PC2_TXC PE7 PE0 PE4 R33 C12 /RES PE5 L1 C14 C40 R21 PC3/PG3 R28 C26 PB3 PB2 PA4 PA2 C10 R11 C37 PF4 C49 Q1 R34 C21 C24 L2 C36 Y1 C39 R13 C29 C16 D1 C53 C22 C27 R25 PA7 L3 PG6_TXE C8 C10 U4 TCM_SMT_SOCKET TCM_SMT_SOCKET R16 PB5 PB4 L1 C16 /IORD PE7 PA1 C11 R13 PA3 C54 C55 R7 R15 R16 /IORD C20 U5 R5 L4 L6 PD5 C9 +485 485 R4 C38 C41 DS1 U6 VBAT C7 C17 J2 JP3 C7 +5V C15 R12 R6 J5 U4 D2 C13 GND GND /IOWR C6 C31 U8 C23 C58 R11 C5 PA5 JP1 C19 U1 C25 U3 Rx RP2 C35 C32 C30 Tx RP1 C33 JP2 U3 C19 D1 J4 C34 C27 C28 GND JP2 C4 C14 C15 C12 J1 C26 C3 U1 J2 C18 JP1 R18 R26 R1 R2 R3 R4 R8 R9 IR1 R5 R6 R7 R36 C2 R24 R2 C1 +BKLT RCM3700 R45 R49 R46 R47 RESET S1 S2 S3 Figure 2. Install the RCM3700 Series on the Prototyping Board NOTE: It is important that you line up the pins on header J1 of the RCM3700 module exactly with the corresponding pins of the TCM_SMT_SOCKET socket on the Prototyping Board. The header pins may become bent or damaged if the pin alignment is offset, and the module will not work. Permanent electrical damage to the module may also result if a misaligned module is powered up. Press the module’s pins firmly into the Prototyping Board headers. RabbitCore RCM3700 User’s Manual 10 2.2.2 Step 2 — Connect Programming Cable The programming cable connects the RCM3700 to the PC running Dynamic C to download programs and to monitor the RCM3700 module during debugging. Connect the 10-pin connector of the programming cable labeled PROG to header J2 on the RCM3700 as shown in Figure 3. Be sure to orient the marked (usually red) edge of the cable towards pin 1 of the connector. (Do not use the DIAG connector, which is used for a normal serial connection.) Figure 3. Connect Programming Cable and Power Supply NOTE: Never disconnect the programming cable by pulling on the ribbon cable. Carefully pull on the connector to remove it from the header. NOTE: Be sure to use the programming cable (part number 101-0542) supplied with this Development Kit—the programming cable has blue shrink wrap around the RS-232 converter section located in the middle of the cable. The simplified programming cable and adapter board that are supplied with the Ethernet Connection Kit may also be used as shown in the inset diagram above. Programming cables from other Rabbit kits are not designed to work with RCM3700 modules. Connect the other end of the programming cable to a COM port on your PC. NOTE: Some PCs now come equipped only with a USB port. It may be possible to use an RS-232/USB converter (Part No. 20-151-0178) with the programming cables mentioned above. Note that not all RS-232/USB converters work with Dynamic C. RabbitCore RCM3700 User’s Manual 11 2.2.3 Step 3 — Connect Power When all other connections have been made, you can connect power to the Prototyping Board. First, prepare the AC adapter for the country where it will be used by selecting the plug. The RCM3700 Development Kit presently includes Canada/Japan/U.S., Australia/N.Z., U.K., and European style plugs. Snap in the top of the plug assembly into the slot at the top of the AC adapter as shown in Figure 3, then press down on the spring-loaded clip below the plug assembly to allow the plug assembly to click into place. Connect the AC adapter to 3-pin header J4 on the Prototyping Board as shown in Figure 3. The connector may be attached either way as long as it is not offset to one side. Plug in the AC adapter. The LED above the RESET button on the Prototyping Board should light up. The RCM3700 and the Prototyping Board are now ready to be used. NOTE: A RESET button is provided on the Prototyping Board to allow a hardware reset without disconnecting power. To power down the Prototyping Board, unplug the power connector from J4. You should disconnect power before making any circuit adjustments in the prototyping area, changing any connections to the board, or removing the RCM3700 from the Prototyping Board. 2.2.3.1 Overseas Development Kits Development kits sold outside North America before 2009 included a header connector that could be connected to 3-pin header J4 on the Prototyping Board. The connector could be attached either way as long as it was not offset to one side. The red and black wires from the connector could then be connected to the positive and negative connections on your power supply. The power supply should deliver 7.5 V–30 V DC at 500 mA. RabbitCore RCM3700 User’s Manual 12 2.3 Starting Dynamic C Once the RCM3700 is connected as described in the preceding pages, start Dynamic C by double-clicking on the Dynamic C icon on your desktop or in your Start menu. If you are using a USB port to connect your computer to the RCM3700, choose Options > Project Options and select “Use USB to Serial Converter.” You may have to determine which COM port was assigned to the RS-232/USB converter. Click OK. 2.4 Run a Sample Program Use the File menu to open the sample program PONG.C, which is in the Dynamic C SAMPLES folder. Press function key F9 to compile and run the program. The STDIO window will open on your PC and will display a small square bouncing around in a box. This program shows that the CPU is working. 2.4.1 Troubleshooting If Dynamic C cannot find the target system (error message "No Rabbit Processor Detected."): • Check that the RCM3700 is powered correctly — the red power lamp on the Prototyping Board should be lit when the RCM3700 is mounted on the Prototyping Board and the AC adapter is plugged in. • Check both ends of the programming cable to ensure that they are firmly plugged into the PC and the PROG connector, not the DIAG connector, is plugged in to the programming port on the RCM3700 with the marked (colored) edge of the programming cable towards pin 1 of the programming header. • Ensure that the RCM3700 module is firmly and correctly installed in its connectors on the Prototyping Board. • Dynamic C uses the COM port specified during installation. Select a different COM port within Dynamic C. From the Options menu, select Project Options, then select Communications. Select another COM port from the list, then click OK. Pressto force Dynamic C to recompile the BIOS. If Dynamic C still reports it is unable to locate the target system, repeat the above steps until you locate the COM port used by the programming cable. RabbitCore RCM3700 User’s Manual 13 If Dynamic C appears to compile the BIOS successfully, but you then receive a communication error message when you compile and load the sample program, it is possible that your PC cannot handle the higher program-loading baud rate. Try changing the maximum download rate to a slower baud rate as follows. • Locate the Serial Options dialog in the Dynamic C Options > Project Options > Communications menu. Select a slower Max download baud rate. If a program compiles and loads, but then loses target communication before you can begin debugging, it is possible that your PC cannot handle the default debugging baud rate. Try lowering the debugging baud rate as follows. • Locate the Serial Options dialog in the Dynamic C Options > Project Options > Communications menu. Choose a lower debug baud rate. 2.5 Where Do I Go From Here? If the sample program ran fine, you are now ready to go on to other sample programs and to develop your own applications. The source code for the sample programs is provided to allow you to modify them for your own use. The RCM3700 User’s Manual also provides complete hardware reference information and describes the software function calls for the RCM3700, the Prototyping Board, and the optional LCD/keypad module. For advanced development topics, refer to the Dynamic C User’s Manual, also in the online documentation set. 2.5.1 Technical Support NOTE: If you purchased your RCM3700 through a distributor or through a Rabbit partner, contact the distributor or partner first for technical support. If there are any problems at this point: • Use the Dynamic C Help menu to get further assistance with Dynamic C. • Check the Rabbit Technical Bulletin Board and forums at www.rabbit.com/support/bb/ and at www.rabbit.com/forums/. • Use the Technical Support e-mail form at www.rabbit.com/support/. RabbitCore RCM3700 User’s Manual 14 3. RUNNING SAMPLE PROGRAMS To develop and debug programs for the RCM3700 (and for all other Rabbit hardware), you must install and use Dynamic C. 3.1 Introduction To help familiarize you with the RCM3700 modules, Dynamic C includes several sample programs. Loading, executing and studying these programs will give you a solid hands-on overview of the RCM3700’s capabilities, as well as a quick start with Dynamic C as an application development tool. NOTE: The sample programs assume that you have at least an elementary grasp of the C programming language. If you do not, see the introductory pages of the Dynamic C User’s Manual for a suggested reading list. In order to run the sample programs discussed in this chapter and elsewhere in this manual, 1. Your RCM3700 must be plugged in to the Prototyping Board as described in Chapter 2, “Getting Started.” 2. Dynamic C must be installed and running on your PC. 3. The programming cable must connect the programming header (J2) on the RCM3700 to your PC. 4. Power must be applied to the RCM3700 through the Prototyping Board. Refer to Chapter 2, “Getting Started,” if you need further information on these steps. To run a sample program, open it with the File menu, then compile and run it by pressing F9. The RCM3700 must be connected to a PC using the programming cable. Complete information on Dynamic C is provided in the Dynamic C User’s Manual. RabbitCore RCM3700 User’s Manual 15 The default I/O configuration in the sample programs is based on the RabbitCore module detected during compile time: • Any RCM3700 RabbitCore module (except the RCM3720) will have its I/O ports configured for an RCM3700 Prototyping Board. • An RCM3720 RabbitCore module will have its I/O ports configured for an RCM3720 Prototyping Board. You may override these default settings to run an RCM3720 RabbitCore module on the RCM3700 Prototyping Board or to run another RCM3700 RabbitCore module on the RCM3720 Prototyping Board by adding the following macro to the sample program you will be running. • To run an RCM3720 RabbitCore module on an RCM3700 Prototyping Board, add the following macro at the top of the sample program you will be running. #define RCM3700_PROTOBOARD Sample programs that are specifically designed for the RCM3700 Prototyping Board already have this macro included. • To run an RCM3700 RabbitCore module (other than the RCM3720) on an RCM3720 Prototyping Board, add the following macro at the top of the sample program you will be running. #define RCM3720_PROTOBOARD RabbitCore RCM3700 User’s Manual 16 3.2 Sample Programs Of the many sample programs included with Dynamic C, several are specific to the RCM3700. Sample programs illustrating the general operation of the RCM3700, serial communication, and the A/D converter on the Prototyping Board are provided in the SAMPLES\RCM3700 and the SAMPLES\RCM3720 folders as shown in the table below. The sample programs use the features available on the two Prototyping Boards. Feature RCM3700 Prototyping Board RCM3720 Prototyping Board Sample Program Folder SAMPLES\RCM3700 SAMPLES\RCM3720 Digital I/O × × IrDA Transceivers × Serial Flash × × Serial Communication × × TCP/IP × × A/D Converter × LCD/Keypad Module × Dynamic C FAT File System, RabbitWeb, SSL Modules × × Each sample program has comments that describe the purpose and function of the program. Follow the instructions at the beginning of the sample program. Note that the RCM3700 must be installed on the Prototyping Board when using these sample programs. TCP/IP sample programs are described in Chapter 6, “Using the TCP/IP Features.” Sample programs for the optional LCD/keypad module that is used on the RCM3700 Prototyping Board are described in Appendix C. Additional sample programs are available online at www.rabbit.com/support/downloads/downloads_prod.shtml. • DIO.c—Demonstrates the digital I/O capabilities of the A/D converter on the Prototyping Board by configuring two lines to outputs and two lines as inputs on Prototyping Board header JP4. If you are using the RCM3700 Prototyping Board, install a 2 x 2 header at JP4 and connect pins 1–2 and pins 3–4 on header JP4 before running this sample program. • FLASHLED.c—Demonstrates assembly-language program by flashing LEDs DS1 and DS2 on the Prototyping Board at different rates. • TOGGLESWITCH.c—Uses costatements to detect switches using debouncing. The corresponding LEDs (DS1 and DS2) will turn on or off. RabbitCore RCM3700 User’s Manual 17 • CONTROLLED.c—Demonstrates use of the digital inputs by having you turn the LEDs on the Prototyping Board on or off from the STDIO window on your PC. Once you compile and run CONTROLLED.C, the following display will appear in the Dynamic C STDIO window. Press “1” or “2” on your keyboard to select LED DS1 or DS2 on the Prototyping Board. Then follow the prompt in the Dynamic C STDIO window to turn the LED on or off. • IR_DEMO.c—Demonstrates sending Modbus ASCII packets between two RCM3700 Prototyping Board assemblies with IrDA transceivers via the IrDA transceivers. Note that this sample program will only work with the RCM3700 Prototyping Board. First, compile and run this program on one Prototyping Board assembly, then remove the programming cable and press the RESET button on the Prototyping Board so that the first RabbitCore module is operating in the Run mode. Then connect the programming cable to the second Prototyping Board assembly with the RCM3700 and compile and run the same sample program. With the programming cable still connected to the second Prototyping Board assembly, press switch S1 on the second Prototyping Board to transmit a packet. Once the first Prototyping Board assembly receives a test packet, it will send back a response packet that will be displayed in the Dynamic C STDIO window. The test packets and response packets have different codes. Once you have loaded and executed these five programs and have an understanding of how Dynamic C and the RCM3700 modules interact, you can move on and try the other sample programs, or begin building your own. RabbitCore RCM3700 User’s Manual 18 3.2.1 Use of Serial Flash The following sample programs can be found in the SAMPLES\RCM3700\SerialFlash and the SAMPLES\RCM3720\SerialFlash folders. • SERIAL_FLASHLOG.C—This program runs a simple Web server and stores a log of hits on the home page of the serial flash “server.” This log can be viewed and cleared from a browser at http://10.10.6.100/. You may need to first “configure” your PC for a “10Base-T Half-Duplex” or an “Auto-Negotiation” connection from the “Advanced” tab, which is accessed from the control panel (Start > Settings > Control Panel) by choosing Network Connections. • SFLASH_INSPECT.C—This program is a handy utility for inspecting the contents of a serialflash chip. When the sample program starts running, it attempts to initialize a serial flash chip on Serial Port B. Once a serial flash chip is found, the user can perform two different commands to either print out the contents of a specified page or clear (set to zero) all the bytes in a specified page. 3.2.2 Serial Communication The following sample programs can be found in the SAMPLES\RCM3700\SERIAL and the SAMPLES\RCM3720\SERIAL folders. NOTE: PE5 is set up to enable/disable the RS-232 chip on the RCM3700 Prototyping Board. This pin will also be toggled when you run RS-232 sample programs on an RCM3700 Prototyping Board. If you plan to use this pin for something else while you are running any of the RS-232 sample programs, comment out the following line. BitWrPortI(PEDR, &PEDRShadow, 0, 5);//set low to enable rs232 device • FLOWCONTROL.C—This program demonstrates hardware flow control by configuring Serial Port C for CTS/RTS with serial data coming from Serial Port D. The serial data received are displayed in the STDIO window. RXC TXC RXE GND TXE RXD GND J2 TXD To set up the Prototyping Board, you will need to tie TxC and RxC together on the RS-232 header at J2, and you will also tie TxD and RxD together using the jumpers supplied in the Development Kit as shown in the diagram. A repeating triangular pattern should print out in the STDIO window. The program will periodically switch flow control on or off to demonstrate the effect of no flow control. Refer to the function description for serDflowcontrolOn() in the Dynamic C Function Reference Manual for a general description on how to set up flow-control lines. RabbitCore RCM3700 User’s Manual 19 RXC TXC RXE GND TXE RXD GND J2 TXD • PARITY.C—This program demonstrates the use of parity modes by repeatedly sending byte values 0–127 from Serial Port D to Serial Port C. The program will switch between generating parity or not on Serial Port D. Serial Port C will always be checking parity, so parity errors should occur during every other sequence. To set up the Prototyping Board, you will need to tie TxD and RxC together on the RS-232 header at J2 using the 0.1" jumpers supplied in the Development Kit as shown in the diagram. The Dynamic C STDIO window will display the error sequence. RXC TXC RXE GND TXE RXD GND J2 TXD • SIMPLE3WIRE.C—This program demonstrates basic RS-232 serial communication. Lower case characters are sent by TxC, and are received by RxD. The characters are converted to upper case and are sent out by TxD, are received by RxC, and are displayed in the Dynamic C STDIO window. To set up the Prototyping Board, you will need to tie TxD and RxC together on the RS-232 header at J2, and you will also tie RxD and TxC together using the 0.1" jumpers supplied in the Development Kit as shown in the diagram. • SIMPLE5WIRE.C—This program demonstrates 5-wire RS-232 serial communication with flow control on Serial Port C and data flow on Serial Port D. RXC TXC RXE GND TXE RXD GND J2 TXD To set up the Prototyping Board, you will need to tie TxD and RxD together on the RS-232 header at J2, and you will also tie TxC and RxC together using the 0.1" jumpers supplied in the Development Kit as shown in the diagram. Once you have compiled and run this program, you can test flow control by disconnecting TxC from RxC while the program is running. Characters will no longer appear in the STDIO window, and will display again once TxC is connected back to RxC. • SWITCHCHAR.C—This program transmits and then receives an ASCII string on Serial Ports C and E. It also displays the serial data received from both ports in the STDIO window. RabbitCore RCM3700 User’s Manual RXC TXC RXE GND TXE RXD GND J2 TXD Before running this sample program, check to make sure that Serial Port E is set up as an RS-232 serial port—pins 1–3 and pins 2–4 on header JP2 on the Prototyping Board must be jumpered together using the 2 mm jumpers supplied in the Development Kit. Then connect TxC to RxE and connect RxC to TxE on the RS-232 header at J2 using the 0.1" jumpers supplied in the Development Kit as shown in the diagram. JP2 20 NOTE: The following two sample programs illustrating RS-485 serial communication will only work with the RCM3700 Prototyping Board. • SIMPLE485MASTER.C—This program demonstrates a simple RS-485 transmission of lower case letters to a slave RCM3700. The slave will send back converted upper case letters back to the master RCM3700 and display them in the STDIO window. Use SIMPLE485SLAVE.C to program the slave RCM3700, and check to make sure that Serial Port E is set up as an RS-485 serial port—pins 3–5 and pins 4–6 on header JP2 must be jumpered together using the 2 mm jumpers supplied in the Development Kit. • SIMPLE485SLAVE.C—This program demonstrates a simple RS-485 transmission of lower case letters to a master RCM3700. The slave JP2 will send back converted upper case letters back to the master RCM3700 and display them in the STDIO window. Use SIMPLE485MASTER.C to program the master RCM3700, and check to make sure that Serial Port E is set up as an RS-485 serial port—pins 3–5 and pins 4–6 on header JP2 must be jumpered together using the 2 mm jumpers supplied in the Development Kit. RabbitCore RCM3700 User’s Manual 21 3.2.3 A/D Converter Inputs The following sample programs are found in the SAMPLES\RCM3700\ADC folder. • AD_CALDIFF_CH.C—Demonstrates how to recalibrate one differential analog input channel using two known voltages to generate the calibration constants for that channel. Constants will be rewritten into user block data area. Before running this program, make sure that pins 1–3 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. No pins are connected on header JP8. • AD_CALMA_CH.C—Demonstrates how to recalibrate an A/D input channel being used to convert analog current measurements to generate the calibration constants for that channel. Before running this program, make sure that pins 3–5 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. Connect pins 1–2, 3–4, 5–6, 7–8 on header JP8. • AD_CALSE_ALL.C—Demonstrates how to recalibrate all single-ended analog input channels for one gain, using two known voltages to generate the calibration constants for each channel. Constants will be rewritten into the user block data area. Before running this program, make sure that pins 3–5 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. No pins are connected on header JP8. • AD_CALSE_CHAN.C—Demonstrates how to recalibrate one single-ended analog input channel with one gain using two known voltages to generate the calibration constants for that channel. Constants will be rewritten into user block data area. Before running this program, make sure that pins 3–5 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. No pins are connected on header JP8. NOTE: The above sample programs will overwrite any existing calibration constants. • AD_RDDIFF_CH.C—Demonstrates how to read an A/D input channel being used for a differential input using previously defined calibration constants. Before running this program, make sure that pins 1–3 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. No pins are connected on header JP8. • AD_RDMA_CH.C—Demonstrates how to read an A/D input channel being used to convert analog current measurements using previously defined calibration constants for that channel. Before running this program, make sure that pins 3–5 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. Connect pins 1–2, 3–4, 5–6, 7–8 on header JP8. • AD_RDSE_ALL.C—Demonstrates how to read all single-ended A/D input channels using previously defined calibration constants. Before running this program, make sure that pins 3–5 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. No pins are connected on header JP8. RabbitCore RCM3700 User’s Manual 22 • AD_SAMPLE.C—Demonstrates how to use a low-level driver on single-ended inputs. The program will continuously display the voltage (average of 10 samples) that is present on the A/D channels. Before running this program, make sure that pins 3–5 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. No pins are connected on header JP8. • ANAINCONFIG.C—Demonstrates how to use the Register Mode method to read singleended analog input values for display as voltages. The sample program uses the function call anaInConfig() and the ADS7870 CONVERT line to accomplish this task. Before running this program, make sure that pins 3–5 are connected on headers JP5, JP6, and JP7 on the Prototyping Board. No pins are connected on header JP8. Also connect PE4 on header J3 on the Prototyping Board to the CNVRT terminal on header J8. If you use this sample program as a template for your own program, be aware that PE4 is also used for the IrDA FIR_SEL on the Prototyping Board. You will need to use another parallel port line for the analog input if you are also using the IrDA transceiver. • THERMISTOR.C—Demonstrates how to use analog input THERM_IN7 to calculate temperature for display to the STDIO window. This sample program assumes that the thermistor is the one included in the Development Kit whose values for beta, series resistance, and resistance at standard temperature are given in the part specification. Before running this program, install the thermistor into the AIN7 and AGND holes at location J7 on the Prototyping Board. Before running the next two sample programs, DNLOADCALIB.C or UPLOADCALIB.C, connect your PC serial COM port to header J2 on the Prototyping Board as follows. • Tx to RxE • Rx to TxE • GND to GND Then connect pins 1–3 and 2–4 on header JP2 on the Prototyping Board. You will need to run a serial utility such as Tera Term on your PC. You may download Tera Term from hp.vector.co.jp/authors/VA002416/teraterm.html. Once Tera Term is running, configure the serial parameters as follows. • Baud rate 19200, 8 bits, no parity, and 1 stop bit. • Enable the "Local Echo" option. • Set the line feed options to Receive = CR and Transmit = CR + LF. Now press F9 to compile and run this program. Verify that the message "Waiting, Please Send Data file" is being display in Tera Term display window before proceeding. From within Tera Term, select File > Send File > Path and filename, then select the OPEN option within the dialog box. Once the data file has been downloaded, it will indicate whether the calibration data were written successfully. RabbitCore RCM3700 User’s Manual 23 • DNLOADCALIB.C—Demonstrates how to retrieve analog calibration data to rewrite it back to simulated EEPROM in flash with using a serial utility such as Tera Term. • UPLOADCALIB.C—Demonstrates how to read calibrations constants from the user block in flash memory and then transmitting the file using a serial port and a PC serial utility such as Tera Term. Use DNLOADCALIB.C to download the calibration constants created by this program. RabbitCore RCM3700 User’s Manual 24 4. HARDWARE REFERENCE Chapter 4 describes the hardware components and principal hardware subsystems of the RCM3700. Appendix A, “RCM3700 Specifications,” provides complete physical and electrical specifications. Figure 4 shows the Rabbit-based subsystems designed into the RCM3700. Ethernet 32 kHz 11 MHz osc osc SRAM RABBIT ® 3000 Program Flash Serial Flash Battery-Backup Circuit RabbitCore Module Customer-specific applications CMOS-level signals Level converter RS-232, RS-485, IrDA serial communication drivers on motherboard Customer-supplied external 3 V battery Figure 4. RCM3700 Subsystems RabbitCore RCM3700 User’s Manual 25 4.1 RCM3700 Digital Inputs and Outputs Figure 5 shows the RCM3700 pinouts for header J1. J1 PA6 PA4 PA2 PA0 PF0 PB2 PB4 PB7 PF5 PF7 PC1/PG2 PC3/PG3 PE5 PE1 PG7 /IOWR PD4 /RES GND GND PA7 PA5 PA3 PA1 PF1 PB0 PB3 PB5 PF4 PF6 PC0 PC2 PE7 PE4 PE0 PG6 /IORD PD5 VBAT +5 V Note: These pinouts are as seen on the Bottom Side of the module. Figure 5. RCM3700 Pinouts Header J1 is a standard 2 x 20 IDC header with a nominal 0.1" pitch. RabbitCore RCM3700 User’s Manual 26 Figure 6 shows the use of the Rabbit 3000 microprocessor ports in the RCM3700 modules. PC0, PC2 PC1, PC3 PG2PG3 PG6PG7 PC6, STATUS PB1, PC7, /RESET, SMODE0, SMODE1 4 Ethernet signals PA0PA7 PB0, PB7, PB2PB5 PD4PD5 Port A Port B (+Ethernet Port) Port C (Serial Ports C & D) Port G (Serial Ports E & F) Programming Port (Serial Port A) Ethernet Port RAM RABBIT 3000 Port D ® Port E PE0PE1, PE4PE5, PE7 Port F PF4PF7 Real-Time Clock Watchdog 11 Timers Slave Port Clock Doubler Misc. I/O Backup Battery Support Flash /RES /IORD /RES, /IOWR Figure 6. Use of Rabbit 3000 Ports The ports on the Rabbit 3000 microprocessor used in the RCM3700 are configurable, and so the factory defaults can be reconfigured. Table 2 lists the Rabbit 3000 factory defaults and the alternate configurations. RabbitCore RCM3700 User’s Manual 27 Table 2. RCM3700 Pinout Configurations Header J1 Pin Pin Name Default Use Alternate Use Notes 1–8 PA[7:0] Parallel I/O External data bus (ID0–ID7) Slave port data bus (SD0–SD7) 9 PF1 Input/Output QD1A CLKC 10 PF0 Input/Output QD1B CLKD 11 PB0 Input/Output CLKB 12 PB2 Input/Output IA0 /SWR External Address 0 Slave port write 13 PB3 Input/Output IA1 /SRD External Address 1 Slave port read 14 PB4 Input/Output IA2 SA0 External Address 2 Slave Port Address 0 15 PB5 Input/Output IA3 SA1 External Address 3 Slave Port Address 1 16 PB7 Input/Output IA5 /SLAVEATTN External Address 5 Slave Port Attention 17 PF4 Input/Output AQD1B PWM0 18 PF5 Input/Output AQD1A PWM1 19 PF6 Input/Output AQD2B PWM2 20 PF7 Input/Output AQD2A PWM3 21 PC0 Output TXD Serial Port D 22 PC1/PG2 Input/Output RXD/TXF Serial Port D Serial Port F 23 PC2 Output TXC Serial Port C 24 PC3/PG3 Input/Output RXC/RXF Serial Port C Serial Port F 25 PE7 Input/Output I7 /SCS I/O Strobe 7 Slave Port Chip Select RabbitCore RCM3700 User’s Manual External Data Bus 28 Table 2. RCM3700 Pinout Configurations (continued) Pin Pin Name Default Use Alternate Use Notes 26 PE5 Input/Output I5 INT1B I/O Strobe 5 Interrupt 1B 27 PE4 Input/Output I4 INT0B I/O Strobe 4 Interrupt 0B 28 PE1 Input/Output I1 INT1A I/O Strobe 1 Interrupt 1A 29 PE0 Input/Output I0 INT0A I/O Strobe 0 Interrupt 0A 30 PG7 Input/Output RXE 31 PG6 Input/Output TXE 32 /IOWR Output External write strobe 33 /IORD Output External read strobe 34 PD4 Input/Output ATXB 35 PD5 Input/Output ARXB 36 /RES Reset output Reset input 37 VBAT 38 GND 39 +5 V 40 GND Header J1 Serial Port E Alternate Serial Port B RabbitCore RCM3700 User’s Manual Reset output from Reset Generator 29 4.1.1 Memory I/O Interface The Rabbit 3000 address lines (A0–A18) and all the data lines (D0–D7) are routed internally to the onboard flash memory and SRAM chips. I/0 write (/IOWR) and I/0 read (/IORD) are available for interfacing to external devices. Parallel Port A can also be used as an external I/O data bus to isolate external I/O from the main data bus. Parallel Port B pins PB2–PB5 and PB7 can also be used as an external address bus. When using the external I/O bus for either Ethernet or the LCD/keypad module on the Prototyping Board, or for any other reason, you must add the following line at the beginning of your program. #define PORTA_AUX_IO // required to enable external I/O bus 4.1.2 Other Inputs and Outputs /RES is an output from the reset circuitry that can be used to reset other peripheral devices. This pin can also be used to reset the microprocessor. RabbitCore RCM3700 User’s Manual 30 4.2 Serial Communication The RCM3700 board does not have any serial transceivers directly on the board. However, a serial interface may be incorporated on the board the RCM3700 is mounted on. For example, the Prototyping Board has RS-232, RS-485 and IrDA transceiver chips. 4.2.1 Serial Ports There are five serial ports designated as Serial Ports A, C, D, E, and F. All five serial ports can operate in an asynchronous mode up to the baud rate of the system clock divided by 8. An asynchronous port can handle 7 or 8 data bits. A 9th bit address scheme, where an additional bit is sent to mark the first byte of a message, is also supported. Serial Port A is normally used as a programming port, but may be used either as an asynchronous or as a clocked serial port once application development has been completed and the RCM3700 is operating in the Run Mode. Serial Ports C and D can also be operated in the clocked serial mode. In this mode, a clock line synchronously clocks the data in or out. Either of the two communicating devices can supply the clock. Serial Ports E and F can also be configured as HDLC serial ports. The IrDA protocol is also supported in SDLC format by these two ports. Serial Port F shares its pins with Serial Ports C and D on header J1, as shown in Figure 7. The selection of port(s) depends on your need for two clocked serial ports (Serial Ports C and D) vs. a second HDLC serial port (Serial Port F). J1: 23 J1: 24 J1: 21 J1: 22 TXC RXC PC2 TXD RXD PC0 TXF RXF PG2 PC3 PC1 PG3 Figure 7. RCM3700 Serial Ports C, D, and F The serial ports used are selected with the serXOpen function call, where X is the serial port (C, D, or F). Remember that RxC and RxD on Serial Ports C and D cannot be used if Serial Port F is being used RabbitCore RCM3700 User’s Manual 31 4.2.2 Ethernet Port Figure 8 shows the pinout for the RJ-45 Ethernet port (J3). Note that some Ethernet connectors are numbered in reverse to the order used here. ETHERNET 1 8 1. 2. 3. 6. RJ-45 Plug E_Tx+ E_Tx E_Rx+ E_Rx RJ-45 Jack Figure 8. RJ-45 Ethernet Port Pinout Two LEDs are placed next to the RJ-45 Ethernet jack, one to indicate an Ethernet link (LINK) and one to indicate Ethernet activity (ACT). The RJ-45 connector is shielded to minimize EMI effects to/from the Ethernet signals. RabbitCore RCM3700 User’s Manual 32 4.2.3 Serial Programming Port The RCM3700 programming port is accessed through header J2 or over an Ethernet connection via the RabbitLink EG2110. The programming port uses the Rabbit 3000’s Serial Port A for communication. Dynamic C uses the programming port to download and debug programs. The programming port is also used for the following operations. • Cold-boot the Rabbit 3000 on the RCM3700 after a reset. • Remotely download and debug a program over an Ethernet connection using the RabbitLink EG2110. • Fast copy designated portions of flash memory from one Rabbit-based board (the master) to another (the slave) using the Rabbit Cloning Board. In addition to Serial Port A, the Rabbit 3000 startup-mode (SMODE0, SMODE1), status, and reset pins are available on the programming port. The two startup mode pins determine what happens after a reset—the Rabbit 3000 is either cold-booted or the program begins executing at address 0x0000. The status pin is used by Dynamic C to determine whether a Rabbit microprocessor is present. The status output has three different programmable functions: 1. It can be driven low on the first op code fetch cycle. 2. It can be driven low during an interrupt acknowledge cycle. 3. It can also serve as a general-purpose CMOS output. The /RESET_IN pin is an external input that is used to reset the Rabbit 3000 and the RCM3700 onboard peripheral circuits. The serial programming port can be used to force a hard reset on the RCM3700 by asserting the /RESET_IN signal. Alternate Uses of the Programming Port All three clocked Serial Port A signals are available as • a synchronous serial port • an asynchronous serial port, with the clock line usable as a general CMOS input The programming port may also be used as a serial port once the application is running. The SMODE pins may then be used as inputs and the status pin may be used as an output. Refer to the Rabbit 3000 Microprocessor User’s Manual for more information. RabbitCore RCM3700 User’s Manual 33 4.3 Serial Programming Cable The programming cable is used to connect the programming port of the RCM3700 to a PC serial COM port. The programming cable converts the RS-232 voltage levels used by the PC serial port to the CMOS voltage levels used by the Rabbit 3000. When the PROG connector on the programming cable is connected to the RCM3700 programming port, programs can be downloaded and debugged over the serial interface. The DIAG connector of the programming cable may be used on header J2 of the RCM3700 with the RCM3700 operating in the Run Mode. This allows the programming port to be used as a regular serial port. 4.3.1 Changing Between Program Mode and Run Mode The RCM3700 is automatically in Program Mode when the PROG connector on the programming cable is attached, and is automatically in Run Mode when no programming cable is attached. When the Rabbit 3000 is reset, the operating mode is determined by the state of the SMODE pins. When the programming cable’s PROG connector is attached, the SMODE pins are pulled high, placing the Rabbit 3000 in the Program Mode. When the programming cable’s PROG connector is not attached, the SMODE pins are pulled low, causing the Rabbit 3000 to operate in the Run Mode. NC D4 D2 D0 A1 A3 GND LED6 LED4 LED2 LED0 /RSTET D6 D7 D5 D3 D1 A0 GND GND LED5 A2 A1 D0 D2 D4 D6 GND A1 D1 D3 D5 D7 GND LCD1JC A3 /CS +BKLT CX5 JP7 C8 U11 R27 T1 C12 Y3 C57 R29 R31 C22 CX6 R27 CX7 R28 CX8 C35 R43 UX2 01 R41 R42 02 03 04 00 C34 AIN C32 C33 C30 C31 R39 R40 R35 R36 CX11 AGND AGND VREF C29 R44 THERM_IN R37 THERMISTOR CONVERT R31 R32 R33 R34 AIN R38 06 JP8 J7 05 R30 R29 DS1 CX9 R45 R49 RESET CX10 DS3 DS2 J8 R48 RCM36/37XX SERIES PROTOTYPING BOARD LCD1JB CX4 NC NC JP6 NC NC NC NC JP5 R26 +V CX3 A2 VBAT /RESET PD4 CX2 UX1 C28 +V PE1 +5V C40 R33 R24 LED3 PE5 RP1 JP4 U8 PC0_TXD GND L1 C14 CX1 +5V PG7_RXE +3.3V PE0 PG6 TXE PD5 /CS PC1/PG2 LED1 PF6 +BKLT PF5 PF7 PC3/ PG3 PC2 TXC PE4 LCD1JA GND PF4 BT1 LED6 PF1 R15 LED4 +5V LED2 /RES GND PB0 LDE0 PA6 PA7 GND PA5 PF0 R14 LED5 PA3 PB7 DCIN U2 C18 U6 C17 U5 LED3 PA0 LED1 PB3 PB2 PA4 PA2 C8 C10 PB5 PB4 +3.3V PA6 PA2 PF0 PA0 PB2 PB4 C49 Q1 C10 R11 C37 2 DS2 J3 1 GND TXE GND TXD C9 PA7 PA5 PA3 PA1 PF1 PB0 PB3 PB5 PF6 PC0_TXD PE7 PE4 PE0 PF4 PB7 PG6_TXE /IORD PD5 VBAT PC2_TXC Rx R28 L2 R7 R15 R16 C36 Y1 C39 R13 C29 R32 R30 R34 C21 C24 L3 PC1/ PF7 PG2 PF5 U5 R5 R4 U4 L4 C16 D1 L6 PE5 PA4 C20 DS1 U6 C53 C54 C55 PC3/PG3 C38 C41 JP3 /IOWR PG7 RXE C20 PE1 C17 C7 PD4 C15 R6 C27 R25 C31 GND C32 C30 /RES C33 R23 C24 C25 U7 RXD 485 +485 J2 JP1 C19 U1 C25 U3 +5V C34 GND C18 R22 C23 R18 JP2 R21 R36 C27 C28 C21 L2 R18 R19 R20 PE7 L1 C16 /IORD PA1 C11 R13 TCM_SMT_SOCKET C26 C26 R24 R2 PROG U8 C23 C58 C22 C7 R12 RP2 R11 J5 U4 D2 C13 GND GND /IOWR C6 GND JP2 U3 C3 R16 C19 D1 J4 C5 C4 R26 Blue shrink wrap C14 C15 C12 J1 C35 Tx JP1 R1 R2 R3 R4 R6 U1 J2 R9 IR1 R5 GND R8 R7 C2 DIAG To PC COM port RXC TXC RXE C1 RP1 Programming Cable Colored edge GND J2 PROG RESET RCM3700 when changing mode: Press RESET button (if using Prototyping Board), OR Cycle power off/on after removing or attaching programming cable. R46 R47 RESET S1 S2 S3 Figure 9. Switching Between Program Mode and Run Mode RabbitCore RCM3700 User’s Manual 34 A program “runs” in either mode, but can only be downloaded and debugged when the RCM3700 is in the Program Mode. Refer to the Rabbit 3000 Microprocessor User’s Manual for more information on the programming port and the programming cable. 4.3.2 Standalone Operation of the RCM3700 The RCM3700 must be programmed via the RCM3700 Prototyping Board or via a similar arrangement on a customer-supplied board. Once the RCM3700 has been programmed successfully, remove the programming cable from the programming connector and reset the RCM3700. The RCM3700 may be reset by cycling the power off/on or by pressing the RESET button on the Prototyping Board. The RCM3700 module may now be removed from the Prototyping Board for end-use installation. CAUTION: Power to the Prototyping Board or other boards should be disconnected when removing or installing your RCM3700 module to protect against inadvertent shorts across the pins or damage to the RCM3700 if the pins are not plugged in correctly. Do not reapply power until you have verified that the RCM3700 module is plugged in correctly. RabbitCore RCM3700 User’s Manual 35 4.4 Other Hardware 4.4.1 Clock Doubler The RCM3700 takes advantage of the Rabbit 3000 microprocessor’s internal clock doubler. A built-in clock doubler allows half-frequency crystals to be used to reduce radiated emissions. The 22.1 MHz frequency specified for the RCM3700 is generated using a 11.06 MHz resonator. The clock doubler may be disabled if 22.1 MHz clock speeds are not required. This will reduce power consumption and further reduce radiated emissions. Disable the clock doubler by adding a simple configuration macro as shown below. 1. Select the “Defines” tab from the Dynamic C Options > Project Options menu. 2. Add the line CLOCK_DOUBLED=0 to always disable the clock doubler. The clock doubler is enabled by default, and usually no entry is needed. If you need to specify that the clock doubler is always enabled, add the line CLOCK_DOUBLED=1 to always enable the clock doubler. 3. Click OK to save the macro. The clock doubler will now remain off whenever you are in the project file where you defined the macro. 4.4.2 Spectrum Spreader The Rabbit 3000 features a spectrum spreader, which helps to mitigate EMI problems. By default, the spectrum spreader is on automatically, but it may also be turned off or set to a stronger setting. The spectrum spreader settings may be changed through a simple configuration macro as shown below. 1. Select the “Defines” tab from the Dynamic C Options > Project Options menu. 2. Normal spreading is the default, and usually no entry is needed. If you need to specify normal spreading, add the line ENABLE_SPREADER=1 For strong spreading, add the line ENABLE_SPREADER=2 To disable the spectrum spreader, add the line ENABLE_SPREADER=0 NOTE: The strong spectrum-spreading setting is not recommended since it may limit the maximum clock speed or the maximum baud rate. It is unlikely that the strong setting will be needed in a real application. 3. Click OK to save the macro. The spectrum spreader will now be set to the state specified by the macro value whenever you are in the project file where you defined the macro. NOTE: Refer to the Rabbit 3000 Microprocessor User’s Manual for more information on the spectrum-spreading setting and the maximum clock speed. RabbitCore RCM3700 User’s Manual 36 4.5 Memory 4.5.1 SRAM RCM3700 series boards have 256K–512K of SRAM. 4.5.2 Flash EPROM RCM3700 series boards also have 256K–512K of flash EPROM. NOTE: Rabbit recommends that any customer applications should not be constrained by the sector size of the flash EPROM since it may be necessary to change the sector size in the future. Writing to arbitrary flash memory addresses at run time is also discouraged. Instead, use a portion of the “user block” area to store persistent data. The functions writeUserBlock and readUserBlock are provided for this. Refer to the Rabbit 3000 Microprocessor Designer’s Handbook for additional information. A Flash Memory Bank Select jumper configuration option based on 0 surface-mounted resistors exists at header JP1 on the RCM3700 modules. This option, used in conjunction with some configuration macros, allows Dynamic C to compile two different co-resident programs for the upper and lower halves of the 512K flash in such a way that both programs start at logical address 0000. This is useful for applications that require a resident download manager and a separate downloaded program. See Technical Note TN218 in the online documentation, Implementing a Serial Download Manager for a 256K Flash, for details. 4.5.3 Serial Flash A 1Mbyte serial flash is available to store data and Web pages. Sample programs in the SAMPLES\RCM3700 folder illustrate the use of the serial flash. 4.5.4 Dynamic C BIOS Source Files The Dynamic C BIOS source files handle different standard RAM and flash EPROM sizes automatically. RabbitCore RCM3700 User’s Manual 37 5. SOFTWARE REFERENCE Dynamic C is an integrated development system for writing embedded software. It runs on an IBM-compatible PC and is designed for use with Rabbit single-board computers and other single-board computers based on the Rabbit microprocessor. Chapter 5 describes the libraries and function calls related to the RCM3700. 5.1 More About Dynamic C Dynamic C has been in use worldwide since 1989. It is specially designed for programming embedded systems, and features quick compile and interactive debugging. A complete reference guide to Dynamic C is contained in the Dynamic C User’s Manual and in the Dynamic C Function Reference Manual. You have a choice of doing your software development in the flash memory or in the SRAM included on the RCM3700. The flash memory and SRAM options are selected with the Options > Compiler menu. The advantage of working in RAM is to save wear on the flash memory, which is limited to about 100,000 write cycles. The disadvantage is that the code and data might not both fit in RAM. NOTE: An application can be compiled in RAM, but cannot run standalone from RAM after the programming cable is disconnected. All standalone applications can only run from flash memory. NOTE: Do not depend on the flash memory sector size or type in your program logic. The RCM3700 and Dynamic C were designed to accommodate flash devices with various sector sizes in response to the volatility of the flash-memory market. Developing software with Dynamic C is simple. Users can write, compile, and test C and assembly code without leaving the Dynamic C development environment. Debugging occurs while the application runs on the target. Alternatively, users can compile a program to an image file for later loading. Dynamic C runs on PCs under Windows 2000/NT and later—see Rabbit’s Technical Note TN257, Running Dynamic C® With Windows Vista®, for additional information if you are using a Dynamic C release prior to v. 9.60 under Windows Vista. Programs can be downloaded at baud rates of up to 460,800 bps after the program compiles. RabbitCore RCM3700 User’s Manual 38 Dynamic C has a number of standard features. Some of these standard features are listed below. • Full-feature source and assembly-level debugger, no in-circuit emulator required. • Royalty-free TCP/IP stack with source code and most common protocols. • Hundreds of functions in source-code libraries and sample programs: exceptionally fast support for floating-point arithmetic and transcendental functions. RS-232 and RS-485 serial communication. analog and digital I/O drivers. I2C, SPI, GPS, file system. LCD display and keypad drivers. • Powerful language extensions for cooperative or preemptive multitasking • Loader utility program (Rabbit Field Utility) to load binary images to Rabbit-based targets without the presence of Dynamic C. • Provision for customers to create their own source code libraries and augment on-line help by creating “function description” block comments using a special format for library functions. • Standard debugging features: Breakpoints—Set breakpoints that can disable interrupts. Single-stepping—Step into or over functions at a source or machine code level, µC/OS-II aware. Code disassembly—The disassembly window displays addresses, opcodes, mnemonics, and machine cycle times. Switch between debugging at machine-code level and source-code level by simply opening or closing the disassembly window. Watch expressions—Watch expressions are compiled when defined, so complex expressions including function calls may be placed into watch expressions. Watch expressions can be updated with or without stopping program execution. Register window—All processor registers and flags are displayed. The contents of general registers may be modified in the window by the user. Stack window—shows the contents of the top of the stack. Hex memory dump—displays the contents of memory at any address. STDIO window—printf outputs to this window and keyboard input on the host PC can be detected for debugging purposes. printf output may also be sent to a serial port or file. RabbitCore RCM3700 User’s Manual 39 5.2 Dynamic C Functions The functions described in this section are for use with the Prototyping Board features. The source code is in the RCM37xx.LIB library in the Dynamic C SAMPLES\RCM3700 or the SAMPLES\RCM3720 folder, depending on which Prototyping Board you will be using, if you need to modify it for your own board design. Other generic functions applicable to all devices based on Rabbit microprocessors are described in the Dynamic C Function Reference Manual. RabbitCore RCM3700 User’s Manual 40 5.2.1 Board Initialization void brdInit (void); Call this function at the beginning of your program. This function initializes Parallel Ports A through G for use with the RCM3700 Prototyping Board or the RCM3720 Prototyping Board. The brdInit function is set up to a default I/O configuration based on the RabbitCore module detected at compile time: • Any RCM3700 RabbitCore module (except the RCM3720) will have its I/O ports configured for an RCM3700 Prototyping Board. • An RCM3720 RabbitCore module will have its I/O ports configured for an RCM3720 Prototyping Board. You may override these default settings to run an RCM3720 RabbitCore module on the RCM3700 Prototyping Board or to run another RCM3700 RabbitCore module on the RCM3720 Prototyping Board by adding the following macro to the program you will be running. • To run an RCM3720 RabbitCore module on an RCM3700 Prototyping Board, add the following macro at the top of the program you will be running. #define RCM3700_PROTOBOARD Sample programs that are specifically designed for the RCM3700 Prototyping Board already have this macro included. When you run a sample program designed for the RCM3700 Prototyping Board on an RCM3720, a warning message will be displayed to inform you of that. You can disable the warning by commenting out the line indicated by the compiler. • To run an RCM3700 RabbitCore module (other than the RCM3720) on an RCM3720 Prototyping Board, add the following macro at the top of the program you will be running. #define RCM3720_PROTOBOARD Summary of Initialization 1. 2. 3. 4. 5. 6. 7. 8. 9. I/O port pins are configured for Prototyping Board operation. Unused configurable I/O are set as tied inputs or outputs. The LCD/keypad module is disabled. RS-485 is not enabled. RS-232 is not enabled. The IrDA transceiver is disabled. LEDs are off. The A/D converter is reset and SCLKB is to 57,600 bps (RCM3700 Prototyping Board only). The A/D converter calibration constants are read (this function cannot run in RAM) (RCM3700 Prototyping Board only). 10. Ethernet select is disabled. 11. Serial flash select is disabled. CAUTION: Pin PB7 is connected as both switch S2 and as an external I/O bus on the RCM3700 Prototyping Board. Do not use S2 when the LCD/keypad module is installed. CAUTION: Pins PC1 and PG2 are tied together, and pins PC3 and PG3 are tied together on the RCM3700 RabbitCore module. Both pairs of pins are connected to the IrDA transceiver and to the RS-232 transceiver via serial ports on the RCM3700 Prototyping Board. Do not enable both transceivers on the RCM3700 Prototyping Board at the same time. RETURN VALUE None. RabbitCore RCM3700 User’s Manual 41 5.2.2 Analog Inputs NOTE: The function calls for the A/D converter in this section will work only with the RCM3700 Prototyping Board. unsigned int anaInConfig(unsigned int instructionbyte, unsigned int cmd, long baud); Use this function to configure the ADS7870 A/D converter. This function will address the ADS7870 in Register Mode only, and will return error if you try the Direct Mode. Section B.1.5 provides additional addressing and command information for the ADS7870 A/D converter. ADS7870 Signal ADS7870 State LN0 Input AIN0 LN1 Input AIN1 LN2 Input AIN2 LN3 Input AIN3 LN4 Input AIN4 LN5 Input AIN5 LN6 Input AIN6 LN7 Input AIN7 /RESET Input Board reset device RISE/FALL Input Pulled up for SCLK active on rising edge PIO0 Input Pulled down PIO1 Input Pulled down PIO2 Input Pulled down PIO3 Input Pulled down CONVERT Input Pulled down BUSY Output CCLKCNTRL Input Pulled down; 0 state sets CCLK as input CCLK Input Pulled down; external conversion clock SCLK Input PB0; serial data transfer clock SDI Input PD4; 3-wire mode for serial data input SDO Output /CS Input PD2 pulled up; active-low enables serial interface BUFIN Input Driven by VREF; reference buffer amplifier VREF Output Connected to BUFIN BUFOUT Output VREF output RabbitCore RCM3700 User’s Manual RCM3700 Function/State PD1 pulled down; logic high state converter is busy PD5; serial data output /CS driven 42 PARAMETERS instructionbyte is the instruction byte that will initiate a read or write operation at 8 or 16 bits on the designated register address. For example, checkid = anaInConfig(0x5F, 0, 9600); // read ID and set baud rate cmd refers to the command data that configure the registers addressed by the instruction byte. Enter 0 if you are performing a read operation. For example, i = anaInConfig(0x07, 0x3b, 0); // write ref/osc reg and enable baud is the serial clock transfer rate of 9600 to 57,600 bps. baud must be set the first time this function is called. Enter 0 for this parameter thereafter, for example, anaInConfig(0x00, 0x00, 9600); // resets device and sets baud RETURN VALUE 0 on write operations, data value on read operations SEE ALSO anaInDriver, anaIn, brdInit RabbitCore RCM3700 User’s Manual 43 unsigned int anaInDriver(unsigned int cmd, unsigned int len); Reads the voltage of an analog input channel by serial-clocking an 8-bit command to the ADS7870 A/D converter by the Direct Mode method. This function assumes that Mode1 (most significant byte first) and the A/D converter oscillator have been enabled. See anaInConfig() for the setup. The conversion begins immediately after the last data bit has been transferred. An exception error will occur if Direct Mode bit D7 is not set. PARAMETERS cmd contains a gain code and a channel code as follows. D7—1; D6–D4—Gain Code; D3–D0—Channel Code Use the following calculation and the tables below to determine cmd: cmd = 0x80 | (gain_code*16) + channel_code Gain Code Multiplier 0 x1 1 x2 2 x4 3 x5 4 x8 5 x10 6 x16 7 x20 Channel Code Differential Input Lines Channel Code Single-Ended Input Lines* 4–20 mA Lines 0 +AIN0 -AIN1 8 AIN0 AIN0* 1 +AIN2 -AIN3 9 AIN1 AIN1* 2 +AIN4 -AIN5 10 AIN2 AIN2* 3† +AIN6 -AIN7 11 AIN3 AIN3 4 -AIN0 +AIN1 12 AIN4 AIN4 5 -AIN2 +AIN3 13 AIN5 AIN5 6 -AIN4 +AIN5 14 AIN6 AIN6 7* -AIN6 +AIN7 15 AIN7 AIN7* * Negative input is ground. † Not accessible on RCM3700 Prototyping Board len, the output bit length, is always 12 for 11-bit conversions RETURN VALUE RabbitCore RCM3700 User’s Manual 44 A value corresponding to the voltage on the analog input channel: 0–2047 for 11-bit conversions (bit 12 for sign) -1 overflow or out of range -2 conversion incomplete, busy bit timeout SEE ALSO anaInConfig, anaIn, brdInit RabbitCore RCM3700 User’s Manual 45 unsigned int anaIn(unsigned int channel, int opmode, int gaincode); Reads the value of an analog input channel using the direct method of addressing the ADS7870 A/D converter. The A/D converter is enabled the first time this function is called—this will take approximately 1 second to ensure that the A/D converter capacitor is fully charged. PARAMETERS channel is the channel number (0 to 7) corresponding to ADC_IN0 to ADC_IN7 opmode is the mode of operation: SINGLE—single-ended input DIFF—differential input mAMP—4–20 mA input channel SINGLE DIFF mAMP 0 +AIN0 +AIN0 -AIN1 +AIN0* 1 +AIN1 +AIN1 -AIN0* +AIN1* 2 +AIN2 +AIN2 -AIN3 +AIN2* 3 +AIN3 +AIN3 -AIN2* +AIN3 4 +AIN4 +AIN4 -AIN5 +AIN4 5 +AIN5 +AIN5 -AIN4* +AIN5 6 +AIN6 +AIN6 -AIN7* +AIN6 7 +AIN7 +AIN7 -AIN6* +AIN7* * Not accessible on RCM3700 Prototyping Board. gaincode is the gain code of 0 to 7 Gain Code Multiplier Voltage Range* (V) 0 x1 0–20 1 x2 0–10 2 x4 0–5 3 x5 0–4 4 x8 0–2.5 5 x10 0–2 6 x16 0–1.25 7 x20 0–1 * Applies to RCM3700 Prototyping Board. RabbitCore RCM3700 User’s Manual 46 RETURN VALUE A value corresponding to the voltage on the analog input channel: 0–2047 for 11-bit A/D conversions (signed 12th bit) ADOVERFLOW (defined macro = -4096) if overflow or out of range -4095 if conversion is incomplete or busy-bit timeout SEE ALSO anaIn, anaInConfig, anaInDriver RabbitCore RCM3700 User’s Manual 47 int anaInCalib(int channel, int opmode, int gaincode, int value1, float volts1, int value2, float volts2); Calibrates the response of the desired A/D converter channel as a linear function using the two conversion points provided. Four values are calculated and placed into global tables to be later stored into simulated EEPROM using the function anaInEEWr(). Each channel will have a linear constant and a voltage offset. PARAMETERS channel is the analog input channel number (0 to 7) corresponding to ADC_IN0 to ADC_IN7 opmode is the mode of operation: SINGLE—single-ended input DIFF—differential input mAMP—milliamp input channel SINGLE DIFF mAMP 0 +AIN0 +AIN0 -AIN1 +AIN0* 1 +AIN1 +AIN1 -AIN0* +AIN1* 2 +AIN2 +AIN2 -AIN3 +AIN2* 3 +AIN3 +AIN3 -AIN2* +AIN3 4 +AIN4 +AIN4 -AIN5 +AIN4 5 +AIN5 +AIN5 -AIN4* +AIN5 6 +AIN6 +AIN6 -AIN7* +AIN6 7 +AIN7 +AIN7 -AIN6* +AIN7* * Not accessible on RCM3700 Prototyping Board. gaincode is the gain code of 0 to 7 Gain Code Multiplier Voltage Range* (V) 0 x1 0–20 1 x2 0–10 2 x4 0–5 3 x5 0–4 4 x8 0–2.5 5 x10 0–2 6 x16 0–1.25 7 x20 0–1 * Applies to RCM3700 Prototyping Board. RabbitCore RCM3700 User’s Manual 48 value1 is the first A/D converter channel value (0–2047) volts1 is the voltage or current corresponding to the first A/D converter channel value (0 to +20 V or 4 to 20 mA) value2 is the second A/D converter channel value (0–2047) volts2 is the voltage or current corresponding to the first A/D converter channel value (0 to +20 V or 4 to 20 mA) RETURN VALUE 0 if successful. -1 if not able to make calibration constants. SEE ALSO anaIn, anaInVolts, anaInmAmps, anaInDiff, anaInCalib, brdInit RabbitCore RCM3700 User’s Manual 49 float anaInVolts(unsigned int channel, unsigned int gaincode); Reads the state of a single-ended analog input channel and uses the calibration constants previously set using anaInCalib to convert it to volts. PARAMETERS channel is the channel number (0–7) Channel Code Single-Ended Input Lines* Voltage Range† (V) 0 +AIN0 0–20 1 +AIN1 0–20 2 +AIN2 0–20 3 +AIN3 0–20 4 +AIN4 0–20 5 +AIN5 0–20 6 +AIN6 0–20 7 +AIN7 0–2‡ * Negative input is ground. † Applies to RCM3700 Prototyping Board. ‡ Used for thermistor in sample program. gaincode is the gain code of 0 to 7 Gain Code Multiplier Voltage Range* (V) 0 x1 0–20 1 x2 0–10 2 x4 0–5 3 x5 0–4 4 x8 0–2.5 5 x10 0–2 6 x16 0–1.25 7 x20 0–1 * Applies to RCM3700 Prototyping Board. RETURN VALUE A voltage value corresponding to the voltage on the analog input channel. ADOVERFLOW (defined macro = -4096) if overflow or out of range. SEE ALSO anaInCalib, anaIn, anaInmAmps, brdInit RabbitCore RCM3700 User’s Manual 50 float anaInDiff(unsigned int channel, unsigned int gaincode); Reads the state of differential analog input channels and uses the calibration constants previously set using anaInCalib to convert it to volts. PARAMETERS channel is the analog input channel number (0 to 7) corresponding to ADC_IN0 to ADC_IN7 channel DIFF Voltage Range (V) 0 +AIN0 -AIN1 -20 to +20* 1 +AIN1 -AIN0 — 2 +AIN2 -AIN3 -20 to +20* 3 +AIN3 -AIN2 — 4 +AIN4 -AIN5 -20 to +20* 5 +AIN5 -AIN4 — 6 +AIN6 -AIN7 — 7 +AIN7 -AIN6 — * Applies to RCM3700 Prototyping Board. gaincode is the gain code of 0 to 7 Gain Code Multiplier Voltage Range* (V) 0 x1 0–20 1 x2 0–10 2 x4 0–5 3 x5 0–4 4 x8 0–2.5 5 x10 0–2 6 x16 0–1.25 7 x20 0–1 * Applies to RCM3700 Prototyping Board. RETURN VALUE A voltage value corresponding to the voltage on the analog input channel. ADOVERFLOW (defined macro = -4096) if overflow or out of range. SEE ALSO anaInCalib, anaIn, anaInmAmps, brdInit RabbitCore RCM3700 User’s Manual 51 float anaInmAmps(unsigned int channel); Reads the state of an analog input channel and uses the calibration constants previously set using anaInCalib to convert it to current. PARAMETERS channel is the channel number (0–7) Channel Code 4–20 mA Input Lines* 0 +AIN0 1 +AIN1 2 +AIN2 3 +AIN3† 4 +AIN4* 5 +AIN5* 6 +AIN6* 7 +AIN7 * Negative input is ground. † Applies to RCM3700 Prototyping Board. RETURN VALUE A current value between 4.00 and 20.00 mA corresponding to the current on the analog input channel. ADOVERFLOW (defined macro = -4096) if overflow or out of range. SEE ALSO anaInCalib, anaIn, anaInVolts RabbitCore RCM3700 User’s Manual 52 root int anaInEERd(unsigned int channel, unsigned int opmode, unsigned int gaincode); Reads the calibration constants, gain, and offset for an input based on their designated position in the simulated EEPROM area of the flash memory, and places them into global tables for analog inputs. The constants are stored in the top 2K of the reserved user block memory area 0x1C00–0x1FFF. Depending on the flash size, the following macros can be used to identify the starting address for these locations. ADC_CALIB_ADDRS, address start of single-ended analog input channels ADC_CALIB_ADDRD, address start of differential analog input channels ADC_CALIB_ADDRM, address start of milliamp analog input channels NOTE: This function cannot be run in RAM. PARAMETER channel is the analog input channel number (0 to 7) corresponding to ADC_IN0 to ADC_IN7 opmode is the mode of operation: SINGLE—single-ended input line DIFF—differential input line mAMP—milliamp input line channel SINGLE DIFF mAMP 0 +AIN0 +AIN0 -AIN1 +AIN0* 1 +AIN1 +AIN1 -AIN0* +AIN1* 2 +AIN2 +AIN2 -AIN3 +AIN2* 3 +AIN3 +AIN3 -AIN2* +AIN3 4 +AIN4 +AIN4 -AIN5 +AIN4 5 +AIN5 +AIN5 -AIN4* +AIN5 6 +AIN6 +AIN6 -AIN7* +AIN6 7 +AIN7 +AIN7 -AIN6* +AIN7* ALLCHAN read all channels for selected opmode * Not accessible on RCM3700 Prototyping Board. RabbitCore RCM3700 User’s Manual 53 gaincode is the gain code of 0 to 7. The gaincode parameter is ignored when channel is ALLCHAN. Gain Code Voltage Range* (V) 0 0–20 1 0–10 2 0–5 3 0–4 4 0–2.5 5 0–2 6 0–1.25 7 0–1 * Applies to RCM3700 Prototyping Board. RETURN VALUE 0 if successful. -1 if address is invalid or out of range. -2 if there is no valid ID block. SEE ALSO anaInEEWr, anaInCalib RabbitCore RCM3700 User’s Manual 54 int anaInEEWr(unsigned int channel, int opmode unsigned int gaincode); Writes the calibration constants, gain, and offset for an input based from global tables to designated positions in the simulated EEPROM area of the flash memory. The constants are stored in the top 2K of the reserved user block memory area 0x1C00–0x1FFF. Depending on the flash size, the following macros can be used to identify the starting address for these locations. ADC_CALIB_ADDRS, address start of single-ended analog input channels ADC_CALIB_ADDRD, address start of differential analog input channels ADC_CALIB_ADDRM, address start of milliamp analog input channels NOTE: This function cannot be run in RAM. PARAMETER channel is the analog input channel number (0 to 7) corresponding to ADC_IN0–ADC_IN7 opmode is the mode of operation: SINGLE—single-ended input line DIFF—differential input line mAMP—milliamp input line channel SINGLE DIFF mAMP 0 +AIN0 +AIN0 -AIN1 +AIN0* 1 +AIN1 +AIN1 -AIN0* +AIN1* 2 +AIN2 +AIN2 -AIN3 +AIN2* 3 +AIN3 +AIN3 -AIN2* +AIN3 4 +AIN4 +AIN4 -AIN5 +AIN4 5 +AIN5 +AIN5 -AIN4* +AIN5 6 +AIN6 +AIN6 -AIN7* +AIN6 7 +AIN7 +AIN7 -AIN6* +AIN7* ALLCHAN read all channels for selected opmode * Not accessible on RCM3700 Prototyping Board. RabbitCore RCM3700 User’s Manual 55 gaincode is the gain code of 0 to 7. The gaincode parameter is ignored when channel is ALLCHAN. Gain Code Voltage Range* (V) 0 0–20 1 0–10 2 0–5 3 0–4 4 0–2.5 5 0–2 6 0–1.25 7 0–1 * Applies to RCM3700 Prototyping Board. RETURN VALUE 0 if successful -1 if address is invalid or out of range. -2 if there is no valid ID block. -3 if there is an error writing to flash memory. SEE ALSO anaInEEWr, anaInCalib void digConfig(char statemask); Configures channels PIO0 to PIO3 on the A/D converter to allow them to be used as digital I/O via header JP4 on the RCM3700 Prototyping Board. Remember to execute the brdInit function before calling this function to prevent a runtime error. PARAMETER statemask is a bitwise mask representing JP4 channels 1 to 4. Use logic 0 for inputs and logic 1 for outputs in these bit positions: bits 7–5—0 bit 4—JP4:4 bit 3—JP4:3 bit 2—JP4:2 bit 1—JP4:1 bit 0—0 RETURN VALUE None. SEE ALSO digOut, digIn RabbitCore RCM3700 User’s Manual 56 void digOut(int channel, int state); Writes a state to a digital output channel on header JP4 of the RCM3700 Prototyping Board. The PIO0 to PIO3 channels on the A/D converter chip are accessed via header JP4 on the RCM3700 Prototyping Board. A runtime error will occur if the brdInit function was not executed before calling this function or if the channel is out of range. PARAMETERS channel is channel 1 to 4 for JP4:1 to JP4:4 state is a logic state of 0 or 1 RETURN VALUE None. SEE ALSO brdInit, digIn int digIn(int channel); Reads the state of a digital input channel on header JP4 of the RCM3700 Prototyping Board. The PIO0 to PIO3 channels on the A/D converter chip are accessed via header JP4 on the RCM3700 Prototyping Board. A runtime error will occur if the brdInit function was not executed before calling this function or if the channel is out of range. PARAMETERS channel is channel 1 to 4 for JP4:1 to JP4:4 state is a logic state of 0 or 1 RETURN VALUE The logic state of the input (0 or 1). SEE ALSO brdInit, digOut RabbitCore RCM3700 User’s Manual 57 5.2.3 Digital I/O The RCM3700 was designed to interface with other systems, and so there are no drivers written specifically for the I/O. The general Dynamic C read and write functions allow you to customize the parallel I/O to meet your specific needs. For example, use WrPortI(PEDDR, &PEDDRShadow, 0x00); to set all the Port E bits as inputs, or use WrPortI(PEDDR, &PEDDRShadow, 0xFF); to set all the Port E bits as outputs. When using the external I/O bus on the Rabbit 3000 chip, add the line #define PORTA_AUX_IO // required to enable external I/O bus to the beginning of any programs using the external I/O bus. The sample programs in the Dynamic C SAMPLES/RCM3700 and the SAMPLES/RCM3720 folders provide further examples. RabbitCore RCM3700 User’s Manual 58 5.2.4 Serial Communication Drivers Library files included with Dynamic C provide a full range of serial communications support. The RS232.LIB library provides a set of circular-buffer-based serial functions. The PACKET.LIB library provides packet-based serial functions where packets can be delimited by the 9th bit, by transmission gaps, or with user-defined special characters. Both libraries provide blocking functions, which do not return until they are finished transmitting or receiving, and nonblocking functions, which must be called repeatedly until they are finished, allowing other functions to be performed between calls. For more information, see the Dynamic C Function Reference Manual and Technical Note TN213, Rabbit Serial Port Software. 5.2.5 Serial Flash The serial flash drivers are located in the LIB\SerialFlash folder. Complete information on these function calls is provided in the Dynamic C Function Reference Manual. 5.2.6 TCP/IP Drivers The TCP/IP drivers are located in the LIB\TCPIP folder. Complete information on these libraries and the TCP/IP functions is provided in the Dynamic C TCP/IP User’s Manual. RabbitCore RCM3700 User’s Manual 59 5.3 Upgrading Dynamic C Dynamic C patches that focus on bug fixes are available from time to time. Check the Web site www.rabbit.com/support/ for the latest patches, workarounds, and bug fixes. The default installation of a patch or bug fix is to install the file in a directory (folder) different from that of the original Dynamic C installation. Rabbit recommends using a different directory so that you can verify the operation of the patch without overwriting the existing Dynamic C installation. If you have made any changes to the BIOS or to libraries, or if you have programs in the old directory (folder), make these same changes to the BIOS or libraries in the new directory containing the patch. Do not simply copy over an entire file since you may overwrite a bug fix; of course, you may copy over any programs you have written. 5.3.1 Extras Dynamic C installations are designed for use with the board they are included with, and are included at no charge as part of our low-cost kits. Starting with Dynamic C version 9.60, Dynamic C includes the popular µC/OS-II realtime operating system, point-to-point protocol (PPP), FAT file system, RabbitWeb, and other select libraries. Rabbit also offers for purchase the Rabbit Embedded Security Pack featuring the Secure Sockets Layer (SSL) and a specific Advanced Encryption Standard (AES) library. In addition to the Web-based technical support included at no extra charge, a one-year telephone-based technical support subscription is also available for purchase. Visit our Web site at www.rabbit.com for further information and complete documentation. 5.3.1.1 Featured Application Kit The Secure Embedded Web Application Kit includes three Dynamic C modules that are bundled together facilitates the rapid development of secure Web browser interfaces for embedded system control. • Dynamic C FAT file system module. • Dynamic C RabbitWeb module. • Dynamic C Secure Sockets Layer (SSL) module. Appendix E provides additional information about the Secure Embedded Web Application Kit. RabbitCore RCM3700 User’s Manual 60 6. USING THE TCP/IP FEATURES 6.1 TCP/IP Connections Programming and development can be done with the RCM3700 modules without connecting the Ethernet port to a network. However, if you will be running the sample programs that use the Ethernet capability or will be doing Ethernet-enabled development, you should connect the RCM3700 module’s Ethernet port at this time. Before proceeding you will need to have the following items. • If you don’t have Ethernet access, you will need at least a 10Base-T Ethernet card (available from your favorite computer supplier) installed in a PC. • Two RJ-45 straight through Ethernet cables and a hub, or an RJ-45 crossover Ethernet cable. The Ethernet cables and a 10Base-T Ethernet hub are available from Rabbit in a TCP/IP tool kit. More information is available at www.rabbit.com. 1. Connect the AC adapter and the programming cable as shown in Chapter 2, “Getting Started.” 2. Ethernet Connections There are four options for connecting the RCM3700 module to a network for development and runtime purposes. The first two options permit total freedom of action in selecting network addresses and use of the “network,” as no action can interfere with other users. We recommend one of these options for initial development. • No LAN — The simplest alternative for desktop development. Connect the RCM3700 module’s Ethernet port directly to the PC’s network interface card using an RJ-45 crossover cable. A crossover cable is a special cable that flips some connections between the two connectors and permits direct connection of two client systems. A standard RJ-45 network cable will not work for this purpose. • Micro-LAN — Another simple alternative for desktop development. Use a small Ethernet 10Base-T hub and connect both the PC’s network interface card and the RCM3700 module’s Ethernet port to it using standard network cables. RabbitCore RCM3700 User’s Manual 61 The following options require more care in address selection and testing actions, as conflicts with other users, servers and systems can occur: • LAN — Connect the RCM3700 module’s Ethernet port to an existing LAN, preferably one to which the development PC is already connected. You will need to obtain IP addressing information from your network administrator. • WAN — The RCM3700 is capable of direct connection to the Internet and other Wide Area Networks, but exceptional care should be used with IP address settings and all network-related programming and development. We recommend that development and debugging be done on a local network before connecting a RabbitCore system to the Internet. TIP: Checking and debugging the initial setup on a micro-LAN is recommended before connecting the system to a LAN or WAN. The PC running Dynamic C does not need to be the PC with the Ethernet card. 3. Apply Power Plug in the AC adapter. The RCM3700 module and Prototyping Board are now ready to be used. RabbitCore RCM3700 User’s Manual 62 6.2 TCP/IP Primer on IP Addresses Obtaining IP addresses to interact over an existing, operating, network can involve a number of complications, and must usually be done with cooperation from your ISP and/or network systems administrator. For this reason, it is suggested that the user begin instead by using a direct connection between a PC and the RCM3700 using an Ethernet crossover cable or a simple arrangement with a hub. (A crossover cable should not be confused with regular straight through cables.) In order to set up this direct connection, you will have to use a PC without networking, or disconnect a PC from the corporate network, or install a second Ethernet adapter and set up a separate private network attached to the second Ethernet adapter. Disconnecting your PC from the corporate network may be easy or nearly impossible, depending on how it is set up. If your PC boots from the network or is dependent on the network for some or all of its disks, then it probably should not be disconnected. If a second Ethernet adapter is used, be aware that Windows TCP/IP will send messages to one adapter or the other, depending on the IP address and the binding order in Microsoft products. Thus you should have different ranges of IP addresses on your private network from those used on the corporate network. If both networks service the same IP address, then Windows may send a packet intended for your private network to the corporate network. A similar situation will take place if you use a dial-up line to send a packet to the Internet. Windows may try to send it via the local Ethernet network if it is also valid for that network. The following IP addresses are set aside for local networks and are not allowed on the Internet: 10.0.0.0 to 10.255.255.255, 172.16.0.0 to 172.31.255.255, and 192.168.0.0 to 192.168.255.255. The RCM3700 uses a 10/100-compatible Ethernet connection with a 10Base-T interface, which is the most common scheme. The RJ-45 connectors are similar to U.S. style telephone connectors, except they are larger and have 8 contacts. An alternative to the direct connection using a crossover cable is a direct connection using a hub. The hub relays packets received on any port to all of the ports on the hub. Hubs are low in cost and are readily available. The RCM3700 uses 10 Mbps Ethernet, so the hub or Ethernet adapter must be either a 10 Mbps unit or a 10/100 unit that adapts to 10 Mbps. In a corporate setting where the Internet is brought in via a high-speed line, there are typically machines between the outside Internet and the internal network. These machines include a combination of proxy servers and firewalls that filter and multiplex Internet traffic. In the configuration below, the RCM3700 could be given a fixed address so any of the computers on the local network would be able to contact it. It may be possible to configure the firewall or proxy server to allow hosts on the Internet to directly contact the controller, but it would probably be easier to place the controller directly on the external network outside of the firewall. This avoids some configuration complications by sacrificing some security. RabbitCore RCM3700 User’s Manual 63 Hub(s) T1 in Adapter Firewall Proxy Server Ethernet Network Ethernet Typical Corporate Network RCM3700 System If your system administrator can give you an Ethernet cable along with its IP address, the netmask and the gateway address, then you may be able to run the sample programs without having to setup a direct connection between your computer and the RCM3700. You will also need the IP address of the nameserver, the name or IP address of your mail server, and your domain name for some of the sample programs. RabbitCore RCM3700 User’s Manual 64 6.2.1 IP Addresses Explained IP (Internet Protocol) addresses are expressed as 4 decimal numbers separated by periods, for example: 216.103.126.155 10.1.1.6 Each decimal number must be between 0 and 255. The total IP address is a 32-bit number consisting of the 4 bytes expressed as shown above. A local network uses a group of adjacent IP addresses. There are always 2N IP addresses in a local network. The netmask (also called subnet mask) determines how many IP addresses belong to the local network. The netmask is also a 32-bit address expressed in the same form as the IP address. An example netmask is: 255.255.255.0 This netmask has 8 zero bits in the least significant portion, and this means that 28 addresses are a part of the local network. Applied to the IP address above (216.103.126.155), this netmask would indicate that the following IP addresses belong to the local network: 216.103.126.0 216.103.126.1 216.103.126.2 etc. 216.103.126.254 216.103.126.255 The lowest and highest address are reserved for special purposes. The lowest address (216.102.126.0) is used to identify the local network. The highest address (216.102.126.255) is used as a broadcast address. Usually one other address is used for the address of the gateway out of the network. This leaves 256 - 3 = 253 available IP addresses for the example given. RabbitCore RCM3700 User’s Manual 65 6.2.2 How IP Addresses are Used The actual hardware connection via an Ethernet uses Ethernet adapter addresses (also called MAC addresses). These are 48-bit addresses and are unique for every Ethernet adapter manufactured. In order to send a packet to another computer, given the IP address of the other computer, it is first determined if the packet needs to be sent directly to the other computer or to the gateway. In either case, there is an Ethernet address on the local network to which the packet must be sent. A table is maintained to allow the protocol driver to determine the MAC address corresponding to a particular IP address. If the table is empty, the MAC address is determined by sending an Ethernet broadcast packet to all devices on the local network asking the device with the desired IP address to answer with its MAC address. In this way, the table entry can be filled in. If no device answers, then the device is nonexistent or inoperative, and the packet cannot be sent. Some IP address ranges are reserved for use on internal networks, and can be allocated freely as long as no two internal hosts have the same IP address. These internal IP addresses are not routed to the Internet, and any internal hosts using one of these reserved IP addresses cannot communicate on the external Internet without being connected to a host that has a valid Internet IP address. The host would either translate the data, or it would act as a proxy. Each RCM3700 RabbitCore module has its own unique MAC address, which consists of the prefix 0090C2 followed by a code that is unique to each RCM3700 module. For example, a MAC address might be 0090C2C002C0. TIP: You can always obtain the MAC address on your board by running the sample program DISPLAY_MAC.C from the SAMPLES\TCPIP folder. RabbitCore RCM3700 User’s Manual 66 6.2.3 Dynamically Assigned Internet Addresses In many instances, devices on a network do not have fixed IP addresses. This is the case when, for example, you are assigned an IP address dynamically by your dial-up Internet service provider (ISP) or when you have a device that provides your IP addresses using the Dynamic Host Configuration Protocol (DHCP). The RCM3700 modules can use such IP addresses to send and receive packets on the Internet, but you must take into account that this IP address may only be valid for the duration of the call or for a period of time, and could be a private IP address that is not directly accessible to others on the Internet. These addresses can be used to perform some Internet tasks such as sending e-mail or browsing the Web, but it is more difficult to participate in conversations that originate elsewhere on the Internet. If you want to find out this dynamically assigned IP address, under Windows 98 you can run the winipcfg program while you are connected and look at the interface used to connect to the Internet. Many networks use IP addresses that are assigned using DHCP. When your computer comes up, and periodically after that, it requests its networking information from a DHCP server. The DHCP server may try to give you the same address each time, but a fixed IP address is usually not guaranteed. If you are not concerned about accessing the RCM3700 from the Internet, you can place the RCM3700 on the internal network using an IP address assigned either statically or through DHCP. RabbitCore RCM3700 User’s Manual 67 6.3 Placing Your Device on the Network In many corporate settings, users are isolated from the Internet by a firewall and/or a proxy server. These devices attempt to secure the company from unauthorized network traffic, and usually work by disallowing traffic that did not originate from inside the network. If you want users on the Internet to communicate with your RCM3700, you have several options. You can either place the RCM3700 directly on the Internet with a real Internet address or place it behind the firewall. If you place the RCM3700 behind the firewall, you need to configure the firewall to translate and forward packets from the Internet to the RCM3700. RabbitCore RCM3700 User’s Manual 68 6.4 Running TCP/IP Sample Programs We have provided a number of sample programs demonstrating various uses of TCP/IP for networking embedded systems. These programs require you to connect your PC and the RCM3700 board together on the same network. This network can be a local private network (preferred for initial experimentation and debugging), or a connection via the Internet. RCM3700 System User’s PC Ethernet crossover cable Direct Connection (network of 2 computers) RabbitCore RCM3700 User’s Manual RCM3700 System Ethernet cables To additional network Hub elements Direct Connection Using a Hub 69 6.4.1 How to Set IP Addresses in the Sample Programs With the introduction of Dynamic C 7.30 we have taken steps to make it easier to run many of our sample programs. You will see a TCPCONFIG macro. This macro tells Dynamic C to select your configuration from a list of default configurations. You will have three choices when you encounter a sample program with the TCPCONFIG macro. 1. You can replace the TCPCONFIG macro with individual MY_IP_ADDRESS, MY_NETMASK, MY_GATEWAY, and MY_NAMESERVER macros in each program. 2. You can leave TCPCONFIG at the usual default of 1, which will set the IP configurations to 10.10.6.100, the netmask to 255.255.255.0, and the nameserver and gateway to 10.10.6.1. If you would like to change the default values, for example, to use an IP address of 10.1.1.2 for the RCM3700 board, and 10.1.1.1 for your PC, you can edit the values in the section that directly follows the “General Configuration” comment in the TCP_CONFIG.LIB library. You will find this library in the LIB\TCPIP directory. 3. You can create a CUSTOM_CONFIG.LIB library and use a TCPCONFIG value greater than 100. Instructions for doing this are at the beginning of the TCP_CONFIG.LIB library in the LIB\TCPIP directory. There are some other “standard” configurations for TCPCONFIG that let you select different features such as DHCP. Their values are documented at the top of the TCP_CONFIG.LIB library in the LIB\TCPIP directory. More information is available in the Dynamic C TCP/IP User’s Manual. RabbitCore RCM3700 User’s Manual 70 6.4.2 How to Set Up your Computer for Direct Connect Follow these instructions to set up your PC or notebook. Check with your administrator if you are unable to change the settings as described here since you may need administrator privileges. The instructions are specifically for Windows 2000, but the interface is similar for other versions of Windows. TIP: If you are using a PC that is already on a network, you will disconnect the PC from that network to run these sample programs. Write down the existing settings before changing them to facilitate restoring them when you are finished with the sample programs and reconnect your PC to the network. 1. Go to the control panel (Start > Settings > Control Panel), and then double-click the Network icon. 2. Select the network interface card used for the Ethernet interface you intend to use (e.g., TCP/IP Xircom Credit Card Network Adapter) and click on the “Properties” button. Depending on which version of Windows your PC is running, you may have to select the “Local Area Connection” first, and then click on the “Properties” button to bring up the Ethernet interface dialog. Then “Configure” your interface card for a “10Base-T Half-Duplex” or an “Auto-Negotiation” connection on the “Advanced” tab. NOTE: Your network interface card will likely have a different name. 3. Now select the IP Address tab, and check Specify an IP Address, or select TCP/IP and click on “Properties” to assign an IP address to your computer (this will disable “obtain an IP address automatically”): IP Address : 10.10.6.101 Netmask : 255.255.255.0 Default gateway : 10.10.6.1 4. Click or to exit the various dialog boxes. RCM3700 System IP 10.10.6.101 Netmask 255.255.255.0 User’s PC Ethernet crossover cable Direct Connection PC to RCM3700 Board RabbitCore RCM3700 User’s Manual 71 6.5 Run the PINGME.C Sample Program Connect the crossover cable from your computer’s Ethernet port to the RCM3700 board’s RJ-45 Ethernet connector. Open this sample program from the SAMPLES\TCPIP\ICMP folder, compile the program, and start it running under Dynamic C. When the program starts running, the green LINK light on the RCM3700 module should be on to indicate an Ethernet connection is made. (Note: If the LNK light does not light, you may not be using a crossover cable, or if you are using a hub perhaps the power is off on the hub.) The next step is to ping the board from your PC. This can be done by bringing up the MSDOS window and running the pingme program: ping 10.10.6.100 or by Start > Run and typing the entry ping 10.10.6.100 Notice that the yellow ACT light flashes on the RCM3700 module while the ping is taking place, and indicates the transfer of data. The ping routine will ping the board four times and write a summary message on the screen describing the operation. 6.6 Running Additional Sample Programs With Direct Connect The sample programs discussed here are in the Dynamic C SAMPLES\RCM3700\TCPIP\ and the SAMPLES\RCM3720\TCPIP\ folders. The program BROWSELED.C demonstrates how to make the RCM3700 board be a Web server. Two “LEDs” are created on the Web page, along with two buttons to toggle them. Users can change the status of the lights from the Web browser. The LEDs on the Prototyping Board match the ones on the Web page. As long as you have not modified the TCPCONFIG 1 macro in the sample program, enter the following server address in your Web browser to bring up the Web page served by the sample program. http://10.10.6.100. Otherwise use the TCP/IP settings you entered in the TCP_CONFIG.LIB library. The optional LCD/keypad module (see Appendix C) must be plugged in to the RCM3700 Prototyping Board when using this sample program. The sample program MBOXDEMO.C implements a Web server that allows e-mail messages to be entered and then shown on the LCD/keypad module. The keypad allows the user to scroll within messages, flip to other e-mails, mark messages as read, and delete e-mails. When a new e-mail arrives, an LED (on the Prototyping Board and LCD/keypad module) turns on, then turns back off once the message has been marked as read. A log of all e-mail actions is kept, and can be displayed in the Web browser. All current e-mails can also be read with the Web browser. The sample program PINGLED.C demonstrates ICMP by pinging a remote host. It will flash LEDs DS1 and DS2 on the Prototyping Board when a ping is sent and received. RabbitCore RCM3700 User’s Manual 72 The sample program SMTP.C allows you to send an e-mail when a switch on the Prototyping Board is pressed. Follow the instructions included with the sample program. LED DS1 on the Prototyping Board will light up when sending e-mail. Note that pin PB7 is connected to both switch S2 and to the external I/O bus on the Prototyping Board, and so switch S2 should not be used with Ethernet operations. 6.6.1 RabbitWeb Sample Programs You will need to have the Dynamic C RabbitWeb module installed before you run the sample programs described in this section. The sample programs can be found in the SAMPLES\RCM3700\TCPIP\RABBITWEB folder. • BLINKLEDS.C—This program demonstrates a basic example to change the rate at which the DS1 and DS2 LEDs on the RCM3700 Prototyping Board or the RCM3720 Prototyping Board blink. • DOORMONITOR.C—The optional LCD/keypad module (see Appendix C) must be plugged in to the RCM3700 Prototyping Board when using this sample program. This program demonstrates adding and monitoring passwords entered via the LCD/keypad module. • HANGMAN_GAME.C—This sample program based on the children's hangman word guessing game demonstrates some RabbitWeb capabilities using the RCM3720 Prototyping Board. • LEDS_CHECKBOX.C—This sample program provides a bare-bones sample of using some RabbitWeb features to control digital I/O using the RCM3720 Prototyping Board. • SPRINKLER.C—This program demonstrates how to schedule times for the digital outputs in a 24-hour period using the RCM3700 Prototyping Board or the RCM3720 Prototyping Board. • TEMPERATURE.C—This program demonstrates the use of a thermistor with the RCM3700 Prototyping Board to measure temperature, and it also demonstrates some simple #web variable registration along with the authentication features. An e-mail message will be sent if the current temperature exceeds the minimum or maximum limits set by the user. Before running this sample program, you will have to install the thermistor included in the RCM3700 Development Kit at location J7 on the RCM3700 Prototyping Board, which is connected to analog input THERM_IN7. RabbitCore RCM3700 User’s Manual 73 6.6.2 Secure Sockets Layer (SSL) Sample Programs You will need to have the Dynamic C SSL module installed before you run the sample programs described in this section. The sample programs can be found in the SAMPLES\ RCM3700\TCPIP\SSL folder. Before running these sample programs, you will have to create an SSL certificate. The SSL walkthrough in the online documentation for the Dynamic C SSL module explains how to do this. • SSL_BROWSELED.C—This program demonstrates a basic controller running a Web page. Two “LEDs” are created on the Web page, along with two buttons to toggle them. Users can change the status of the lights from the Web browser. The LEDs on the Prototyping Board match the ones on the Web page. As long as you have not modified the TCPCONFIG 1 macro in the sample program, enter the following server address in your Web browser to bring up the Web page served by the sample program. http://10.10.6.100 Otherwise use the TCP/IP settings you entered in the TCP_CONFIG.LIB library. • SSL_MBOXDEMO.C—Implements a Web server that allows e-mail messages to be entered and then shown on the LCD/keypad module. The keypad allows the user to scroll within messages, flip to other e-mails, mark messages as read, and delete e-mails. When a new e-mail arrives, an LED (on the Prototyping Board and LCD/keypad module) turns on, then turns back off once the message has been marked as read. A log of all e-mail actions is kept, and can be displayed in the Web browser. All current emails can also be read with the Web browser. 6.6.3 Dynamic C FAT File System, RabbitWeb, and SSL Modules The Dynamic C FAT File System, RabbitWeb, and Secure Sockets Layer (SSL) modules have been integrated into a sample program for the RCM3700. The sample program requires that you have installed the Dynamic C FAT File System, RabbitWeb, and SSL modules. Visit our Web site at www.rabbit.com or contact your Rabbit sales representative or authorized distributor for further information on these Dynamic C modules. NOTE: These sample programs will work only on the RCM3700 and the RCM3720, but not the RCM3710. The RCM3700 RabbitCore modules do not support the download manager portion of the sample program. TIP: Before running any of the sample programs described in this section, you should look at and run sample programs for the TCP/IP ZSERVER.LIB library, the FAT file system, RabbitWeb, SSL, the download manager, and HTTP upload to become more familiar with their operation. The INTEGRATION.C sample program in the SAMPLES\RCM3700\Module_Integration and the SAMPLES\RCM3720\Module_Integration folders demonstrate the use of the TCP/IP ZSERVER.LIB library and FAT file system functionality with RabbitWeb dynamic HTML content, all secured using SSL. The sample program also supports dynamic updates of both the application and its resources using the Rabbit Download Manager (DLM) and HTTP upload capability, respectively—note that neither of these currently supports SSL security. RabbitCore RCM3700 User’s Manual 74 Before you run the INTEGRATION.C sample program, you will first need to format and partition the serial flash. Find the FMT_DEVICE.C sample program in the Dynamic C SAMPLES\FileSystem folder. Open this sample program with the File > Open menu, then compile and run it by pressing F9. FMT_DEVICE.C formats the serial flash for use with the FAT file system. If the serial flash is already formatted, FMT_DEVICE.C gives you the option of erasing the serial flash and reformatting it with a single large partition. This erasure does not check for non-FAT partitions and will destroy all existing partitions. Next, run the INTEGRATION_FAT_SETUP.C sample program in the Dynamic C SAMPLES\RCM3700\Module_Integration folder. Open this sample program with the File > Open menu, then compile and run it by pressing F9. INTEGRATION_FAT_ SETUP.C will copy some files into the FAT file system via #ximport. The last step to complete before you can run the INTEGRATION.C sample program is to create an SSL certificate. The SSL walkthrough in the online documentation for the Dynamic C SSL module explains how to do this. Now you are ready to run the INTEGRATION.C sample program in the Dynamic C SAMPLES\RCM3700\Module_Integration folder. Open this sample program with the File > Open menu, then compile and run it by pressing F9. NOTE: Since HTTP upload and the Dynamic C SSL module currently do not work together, compiling the INTEGRATION.C sample program will generate a serious warning. Ignore the warning because we are not using HTTP upload over SSL. A macro (HTTP_UPLOAD_SSL_SUPRESS_WARNING) is available to suppress the warning message. Open a Web browser, and browse to the device using the IP address from the TCP_ CONFIG.LIB library or the URL you assigned to the device. The humidity monitor will be displayed in your Web browser. This page is accessible via plain HTTP or over SSLsecured HTTPS. Click on the administrator link to bring up the admin page, which is secured automatically using SSL with a user name and a password. Use myadmin for user name and use myadmin for the password. The admin page demonstrates some RabbitWeb capabilities and provides access to the HTTP upload page. Click the upload link to bring up the HTTP upload page, which allows you to choose new files for both the humidity monitor and the admin page. If your browser prompts you again for your user name and password, they are the same as before. Note that the upload page is a static page included in the program flash, and can only be updated by recompiling and downloading the application. This way, the page is protected so that you cannot accidentally change it, possibly restricting yourself from performing future updates. If you wish, you may place the upload page into the FAT file system to allow the upload page to be updated. To try out the update capability, click the upload link on the admin page and choose a simple text file to replace monitor.ztm. Open another browser window and load the main Web page. You will see that your text file has replaced the humidity monitor. To RabbitCore RCM3700 User’s Manual 75 restore the monitor, go back to the other window, click back to go to the upload page again, and choose HUMIDITY_MONITOR.ZHTML to replace monitor.ztm, and click Upload. When you refresh the page in your browser, you will see that the page has been restored. You have successfully updated and restored your application's files remotely! When you are finished with the INTEGRATION.C sample program, you need to follow a special shutdown procedure before powering off to prevent any possible corruption of the FAT file system. Press and hold switch S1 on the Prototyping Board until LED DS1 blinks rapidly to indicate that it is now safe to turn the RCM3700 off. This procedure can be modified by the user to provide other application-specific shutdown tasks. 6.7 Where Do I Go From Here? NOTE: If you purchased your RCM3700 through a distributor or through a Rabbit partner, contact the distributor or partner first for technical support. If there are any problems at this point: • Use the Dynamic C Help menu to get further assistance with Dynamic C. • Check the Rabbit Technical Bulletin Board and forums at www.rabbit.com/support/bb/ and at www.rabbit.com/forums/. • Use the Technical Support e-mail form at www.rabbit.com/support/. If the sample programs ran fine, you are now ready to go on. Additional sample programs are described in the Dynamic C TCP/IP User’s Manual. Please refer to the Dynamic C TCP/IP User’s Manual to develop your own applications. An Introduction to TCP/IP provides background information on TCP/IP, and is available on the CD and on our Web site. RabbitCore RCM3700 User’s Manual 76 APPENDIX A. RCM3700 SPECIFICATIONS Appendix A provides the specifications for the RCM3700, and describes the conformal coating. RabbitCore RCM3700 User’s Manual 77 A.1 Electrical and Mechanical Characteristics Figure A-1 shows the mechanical dimensions for the RCM3700. Figure A-1. RCM3700 Dimensions NOTE: All measurements are in inches followed by millimeters enclosed in parentheses. All dimensions have a manufacturing tolerance of ±0.01" (0.2 mm). The mounting holes shown in Figure A-1 were introduced in 2009. RCM3700 RabbitCore modules sold before 2009 do not have these mounting holes. RabbitCore RCM3700 User’s Manual 78 0.55 (14) 0.16 (4) 0.04 (1) It is recommended that you allow for an “exclusion zone” of 0.04" (1 mm) around the RCM3700 in all directions when the RCM3700 is incorporated into an assembly that includes other printed circuit boards. An “exclusion zone” of 0.16" (4 mm) is recommended below the RCM3700 when the RCM3700 is plugged into another assembly using the shortest connectors for header J1. Figure A-2 shows this “exclusion zone.” 2.950 (74.9) 0.04 (1) 0.04 (1) 0.04 (1) 0.55 (14) 0.16 (4) Exclusion Zone 1.200 (30.5) 0.04 (1) 0.04 (1) Figure A-2. RCM3700 “Exclusion Zone” RabbitCore RCM3700 User’s Manual 79 Table A-1 lists the electrical, mechanical, and environmental specifications for the RCM3700. Table A-1. RabbitCore RCM3700 Specifications Parameter RCM3700 RCM3710 RCM3720 Low-EMI Rabbit 3000® at 22.1 MHz Microprocessor Ethernet Port 10/100-compatible with 10Base-T interface, RJ-45, 2 LEDs Flash Memory 512K 256K 512K SRAM 512K 128K 256K Serial Flash Memory 1Mbyte Connection for user-supplied backup battery (to support RTC and SRAM) Backup Battery 33 parallel digital I/0 lines: • 31 configurable I/O • 2 fixed outputs General-Purpose I/O Additional I/O External I/O Bus Reset Can be configured for 8 data lines and 5 address lines (shared with parallel I/O lines), plus I/O read/write Four 3.3 V CMOS-compatible ports configurable as: Serial Ports • 4 asynchronous serial ports (with IrDA) or • 3 clocked serial ports (SPI) plus 1 HDLC (with IrDA) or • 1 clocked serial port (SPI) plus 2 HDLC serial ports (with IrDA) Serial Rate Slave Interface Maximum asynchronous baud rate = CLK/8 A slave port allows the RCM3700 to be used as an intelligent peripheral device slaved to a master processor, which may either be another Rabbit 3000 or any other type of processor Real-Time Clock Timers Yes Ten 8-bit timers (6 cascadable, 3 reserved for internal peripherals), one 10-bit timer with 2 match registers Watchdog/Supervisor Yes 4 PWM output channels with 10-bit free-running counter and priority interrupts Pulse-Width Modulators 2-channel input capture can be used to time input signals from various port pins Input Capture/ Quadrature Decoder • 1 quadrature decoder unit accepts inputs from external incremental encoder modules or • 1 quadrature decoder unit shared with 2 PWM channels Power Operating Temperature Humidity 4.75–5.25 V DC 100 mA @ 22.1 MHz, 5 V; 78 mA @ 11.05 MHz, 5 V –40°C to +70°C 5% to 95%, noncondensing Connectors One 2 x 20, 0.1" pitch Board Size 1.20" × 2.95" × 0.98" (30 mm × 75 mm × 25 mm) RabbitCore RCM3700 User’s Manual 80 A.1.1 Headers The RCM3700 uses one header at J1 for physical connection to other boards. J1 is a 2 × 20 SMT header with a 0.1" pin spacing. Figure A-3 shows the layout of another board for the RCM3700 to be plugged into. These values are relative to the designated fiducial or mounting hole (reference point). Figure A-3. User Board Footprint for RCM3700 RabbitCore RCM3700 User’s Manual 81 A.2 Bus Loading You must pay careful attention to bus loading when designing an interface to the RCM3700. This section provides bus loading information for external devices. Table A-2 lists the capacitance for the various RCM3700 I/O ports. Table A-2. Capacitance of Rabbit 3000 I/O Ports I/O Ports Input Capacitance (pF) Output Capacitance (pF) 12 14 Parallel Ports A to G Table A-3 lists the external capacitive bus loading for the various RCM3700 output ports. Be sure to add the loads for the devices you are using in your custom system and verify that they do not exceed the values in Table A-3. Table A-3. External Capacitive Bus Loading -40°C to +85°C Output Port All I/O lines with clock doubler enabled RabbitCore RCM3700 User’s Manual Clock Speed (MHz) Maximum External Capacitive Loading (pF) 22.1 100 82 Figure A-4 shows a typical timing diagram for the Rabbit 3000 microprocessor external I/O read and write cycles. External I/O Read (one programmed wait state) T1 Tw T2 CLK A[15:0] valid Tadr /CSx /IOCSx TCSx TCSx TIOCSx TIOCSx /IORD TIORD TIORD /BUFEN TBUFEN Tsetup TBUFEN D[7:0] valid Thold External I/O Write (one programmed wait state) T1 Tw T2 CLK A[15:0] valid Tadr /CSx /IOCSx TCSx TCSx TIOCSx TIOCSx /IOWR /BUFEN D[7:0] TIOWR TIOWR TBUFEN TBUFEN valid TDHZV TDVHZ Figure A-4. I/O Read and Write Cycles—No Extra Wait States NOTE: /IOCSx can be programmed to be active low (default) or active high. RabbitCore RCM3700 User’s Manual 83 Table A-4 lists the delays in gross memory access time. Table A-4. Data and Clock Delays VIN ±10%, Temp, -40°C–+85°C (maximum) Clock to Address Output Delay (ns) 30 pF 60 pF 90 pF Data Setup Time Delay (ns) 6 8 11 1 VIN 3.3 V Spectrum Spreader Delay (ns) Normal Strong no dbl/dbl no dbl/dbl 3/4.5 4.5/9 The measurements are taken at the 50% points under the following conditions. • T = -40°C to 85°C, V = VDD ±10% • Internal clock to nonloaded CLK pin delay 1 ns @ 85°C/3.0 V The clock to address output delays are similar, and apply to the following delays. • Tadr, the clock to address delay • TCSx, the clock to memory chip select delay • TIOCSx, the clock to I/O chip select delay • TIORD, the clock to I/O read strobe delay • TIOWR, the clock to I/O write strobe delay • TBUFEN, the clock to I/O buffer enable delay The data setup time delays are similar for both Tsetup and Thold. When the spectrum spreader is enabled with the clock doubler, every other clock cycle is shortened (sometimes lengthened) by a maximum amount given in the table above. The shortening takes place by shortening the high part of the clock. If the doubler is not enabled, then every clock is shortened during the low part of the clock period. The maximum shortening for a pair of clocks combined is shown in the table. Technical Note TN227, Interfacing External I/O with Rabbit 2000/3000 Designs, contains suggestions for interfacing I/O devices to the Rabbit 3000 microprocessors. RabbitCore RCM3700 User’s Manual 84 A.3 Rabbit 3000 DC Characteristics Table A-5. Rabbit 3000 Absolute Maximum Ratings Symbol Parameter Maximum Rating TA Operating Temperature -55° to +85°C TS Storage Temperature -65° to +150°C Maximum Input Voltage: • Oscillator Buffer Input • 5-V-tolerant I/O VDD Maximum Operating Voltage VDD + 0.5 V 5.5 V 3.6 V Stresses beyond those listed in Table A-5 may cause permanent damage. The ratings are stress ratings only, and functional operation of the Rabbit 3000 chip at these or any other conditions beyond those indicated in this section is not implied. Exposure to the absolute maximum rating conditions for extended periods may affect the reliability of the Rabbit 3000 chip. Table A-6 outlines the DC characteristics for the Rabbit 3000 at 3.3 V over the recommended operating temperature range from TA = –55°C to +85°C, VDD = 3.0 V to 3.6 V. Table A-6. 3.3 Volt DC Characteristics Symbol Parameter Test Conditions Min Typ Max Units 3.3 3.6 V VDD Supply Voltage 3.0 VIH High-Level Input Voltage 2.0 VIL Low-Level Input Voltage VOH High-Level Output Voltage IOH = 6.8 mA, VDD = VDD (min) VOL Low-Level Output Voltage IOL = 6.8 mA, VDD = VDD (min) IIH High-Level Input Current VIN = VDD, IIL Low-Level Input Current IOZ 0.8 0.7 x VDD (absolute worst case, all buffers) VDD = VDD (max) VIN = VSS, (absolute worst case, all buffers) VDD = VDD (max) High-Impedance State Output Current (absolute worst case, all buffers) RabbitCore RCM3700 User’s Manual V VIN = VDD or VSS, VDD = VDD (max), no pull-up V 0.4 V 10 µA -10 -10 V µA 10 µA 85 A.4 I/O Buffer Sourcing and Sinking Limit Unless otherwise specified, the Rabbit I/O buffers are capable of sourcing and sinking 6.8 mA of current per pin at full AC switching speed. Full AC switching assumes a 22.1 MHz CPU clock and capacitive loading on address and data lines of less than 100 pF per pin. The absolute maximum operating voltage on all I/O is 5.5 V. Table A-7 shows the AC and DC output drive limits of the parallel I/O buffers when the Rabbit 3000 is used in the RCM3700. Table A-7. I/O Buffer Sourcing and Sinking Capability Output Drive (Full AC Switching) Pin Name All data, address, and I/O lines with clock doubler enabled Sourcing/Sinking Limits (mA) Sourcing Sinking 6.8 6.8 Under certain conditions, you can exceed the limits outlined in Table A-7. See the Rabbit 3000 Microprocessor User’s Manual for additional information. RabbitCore RCM3700 User’s Manual 86 A.5 Conformal Coating The areas around the 32 kHz real-time clock crystal oscillator on RCM3700 RabbitCore modules without mounting holes have had the Dow Corning silicone-based 1-2620 conformal coating applied. The conformally coated area is shown in Figure A-5. The conformal coating protects these high-impedance circuits from the effects of moisture and contaminants over time. The new design used on RCM3700 RabbitCore modules with mounting holes do not need a conformal coating. Conformally coated area Q1 R15 R16 L1 R33 C57 R29 T1 L2 C54 C55 L6 L4 C53 C24 R28 JP1 C58 C23 U11 U1 C25 U3 C19 R31 Y3 C8 L3 C26 R24 R2 R18 RP2 R36 RP1 C49 R7 C27 C28 C32 C30 C33 C34 C18 C35 U8 C14 C10 JP2 U5 R4 R5 C22 C12 C40 C36 Y1 C39 R13 C29 U4 R26 C38 C41 C31 C15 C20 R6 R11 C37 C17 C7 D1 JP3 J2 U6 C21 J3 R34 C16 R27 DS2 R32 R30 DS1 Figure A-5. RCM3700 Areas Receiving Conformal Coating Any components in the conformally coated area may be replaced using standard soldering procedures for surface-mounted components. A new conformal coating should then be applied to offer continuing protection against the effects of moisture and contaminants. NOTE: For more information on conformal coatings, refer to Technical Note 303, Conformal Coatings. RabbitCore RCM3700 User’s Manual 87 A.6 Jumper Configurations Figure A-6 shows the header locations used to configure the various RCM3700 options via jumpers. Figure A-6. Location of RCM3700 Configurable Positions RabbitCore RCM3700 User’s Manual 88 Table A-8 lists the configuration options. Table A-8. RCM3700 Jumper Configurations Header JP1 JP2 JP3 Description Pins Connected Factory Default × 1–2 Normal Mode 2–3 Bank Mode 1–2 128K–256K RCM3710 RCM3720 2–3 512K RCM3700 1–2 256K RCM3710 2–3 512K RCM3700 RCM3720 Flash Memory Bank Select SRAM Size Flash Memory Size NOTE: The jumper connections are made using 0 surface-mounted resistors. RabbitCore RCM3700 User’s Manual 89 APPENDIX B. PROTOTYPING BOARD Two different Prototyping Boards are available for the RCM3700 series of RabbitCore modules. The RCM3700 Prototyping Board has power-supply connections and also provides some basic I/O peripherals (RS-232, RS-485, A/D converter, IrDA transceiver, LEDs, and switches), as well as a prototyping area for more advanced hardware development. The RCM3720 Prototyping Board was designed specifically for the Ethernet Connection Kit, and only has the power-supply connections, prototyping area, LEDs, switches, and space for an optional RS-232 chip to be installed. Either Prototyping Board may be used with the full line of RCM3700 RabbitCore modules. Appendix B describes the features and accessories for the two prototyping boards. RabbitCore RCM3700 User’s Manual 90 The RCM3700 Prototyping Board included in the RCM3700 Development Kit makes it easy to connect an RCM3700 module to a power supply and a PC workstation for development. It also provides some basic I/O peripherals (RS-232, RS-485, A/D converter, IrDA transceiver, LEDs, and switches), as well as a prototyping area for more advanced hardware development. For the most basic level of evaluation and development, the RCM3700 Prototyping Board can be used without modification. As you progress to more sophisticated experimentation and hardware development, modifications and additions can be made to the board without modifying or damaging the RCM3700 module itself. The RCM3700 Prototyping Board is shown below in Figure B-1, with its main features identified. RS-232 Header RXC TXC RXE R8 R7 NC D4 D2 D0 A1 A3 GND LED6 LED4 LED2 LED0 /RSTET +V D6 +3.3V D7 D5 D3 D1 A0 A2 GND GND LED5 /CS LED1 LED3 D2 D4 D6 GND D5 D7 GND LCD1JC D3 LCD1JB D0 CX5 JP7 /CS NC NC NC NC NC NC R26 JP6 D1 CX3 CX4 UX1 JP5 A1 VBAT CX2 A1 PD4 SMT Prototyping Area R24 C28 +BKLT PE1 A3 CX1 RP1 JP4 U8 Through-Hole Prototyping Area PE5 A2 PG7_RXE PC0_TXD GND PE0 PG6 TXE PD5 LED6 PC1/PG2 LED4 PF6 LED2 PF5 PF7 PC3/ PG3 PC2 TXC PE4 +5 V, 3.3 V, and GND Buses LCD1JA GND PF4 BT1 LDE0 PF1 R15 GND +5V /RESET /RES LED5 PB0 +V PA6 PA7 PF0 LED3 1 2 R22 R23 C24 C25 C27 R25 PA6 PA4 PA2 PA0 PF0 PB2 PB4 PB7 PC1/ PF7 PG2 PF5 PC3/PG3 C21 L2 R18 R19 R20 C23 U7 PA5 PB7 R14 LED1 C26 R21 PE5 PD4 GND /RES /IOWR PG7 RXE C20 PE1 C22 GND TXE PA7 PA5 PA3 PA1 PF1 PB0 PB3 PB5 PF4 PF6 PE7 PE4 PE0 PC0_TXD PC2_TXC PG6_TXE /IORD PD5 VBAT TCM_SMT_SOCKET GND +5V R13 J5 PA3 PA1 C11 C53 DCIN U2 C18 U6 C17 U5 +BKLT C7 PA0 +5V R12 PB3 PB2 GND R11 PB5 PB4 L1 C16 /IORD PE7 +3.3V C9 U3 U4 PA4 PA2 GND C6 D2 C13 GND GND /IOWR GND JP2 C4 C3 TXD 485 +485 C5 RXD J1 R5 R16 C19 D1 C12 C8 C10 Tx Rx JP1 R1 R2 R3 R4 C14 C15 J4 R9 IR1 R6 U1 J2 C2 RCM3700 Module Connector GND C1 Power Input +5V IRDA Transceiver Backup Battery RCM3700 Module Extension Header GND RS-485 CX6 R27 CX7 R28 CX8 C35 R43 UX2 01 R41 R42 03 04 00 C34 AIN C32 02 C33 C30 C31 R39 R40 R35 R36 CX11 AGND AGND VREF C29 R44 THERM_IN R37 THERMISTOR CONVERT R31 R32 R33 R34 AIN R38 06 JP8 J7 05 R30 R29 DS1 CX9 CX10 DS3 DS2 J8 R48 RCM36/37XX SERIES PROTOTYPING BOARD RCM3700 B.1 RCM3700 Prototyping Board R45 R49 R46 R47 RESET S1 Analog Reference Convert Ground S2 S3 Power LED Analog Inputs User LEDs User Switches Reset Switch LCD/Keypad Module Connections Figure B-1. RCM3700 Prototyping Board RabbitCore RCM3700 User’s Manual 91 RCM3700 B.1.1 Features • Power Connection—A 3-pin header is provided for connection to the power supply. Note that the 3-pin header is symmetrical, with both outer pins connected to ground and the center pin connected to the raw DCIN input. The cable of the AC adapter provided with the North American version of the Development Kit ends in a plug that connects to the power-supply header, and can be connected to the 3-pin header in either orientation. A similar header plug leading to bare leads is provided for overseas customers. Users providing their own power supply should ensure that it delivers 7.5–30 V DC at 500 mA. The voltage regulators will get warm while in use. • Regulated Power Supply—The raw DC voltage provided at the POWER IN powerinput jack is routed to a 5 V switching voltage regulator, then to a separate 3.3 V linear regulator. The regulators provide stable power to the RCM3700 module and the Prototyping Board. • Power LED—The power LED lights whenever power is connected to the Prototyping Board. • Reset Switch—A momentary-contact, normally open switch is connected directly to the RCM3700’s /RESET_IN pin. Pressing the switch forces a hardware reset of the system. • I/O Switches and LEDs—Two momentary-contact, normally open switches are connected to the PF4 and PB7 pins of the RCM3700 module and may be read as inputs by sample applications. Two LEDs are connected to the PF6 and PF7 pins of the RCM3700 module, and may be driven as output indicators by sample applications. • Prototyping Area—A generous prototyping area has been provided for the installation of through-hole components. +3.3 V, +5 V, and Ground buses run at both edges of this area. Several areas for surface-mount devices are also available. (Note that there are SMT device pads on both top and bottom of the Prototyping Board.) Each SMT pad is connected to a hole designed to accept a 30 AWG solid wire or wire-wrap wire. • LCD/Keypad Module—Rabbit’s LCD/keypad module may be plugged in directly to headers LCD1JA, LCD1JB, and LCD1JC. The signals on headers LCD1JB and LCD1JC will be available only if the LCD/keypad module is plugged in to header LCD1JA. Appendix C provides complete information for mounting and using the LCD/keypad module. • Module Extension Headers—The complete non-analog pin set of the RCM3700 module is duplicated at header J3. Developers can solder wires directly into the appropriate holes, or, for more flexible development, a 2 × 20 header strip with a 0.1" pitch can be soldered into place. See Figure B-4 for the header pinouts. • Analog I/O Shrouded Headers—The complete analog pin set of the RCM3700 Prototyping Board is available on shrouded headers J8 and J9. See Figure B-4 for the header pinouts. RabbitCore RCM3700 User’s Manual 92 RCM3700 • RS-232—Three 3-wire serial ports or one 5-wire RS-232 serial port and one 3-wire serial port are available on the Prototyping Board at header J2. A jumper on header JP2 is used to select the drivers for Serial Port E, which can be set either as a 3-wire RS-232 serial port or as an RS-485 serial port. Serial Ports C and D are not available while the IrDA transceiver is in use. A 10-pin 0.1-inch spacing header strip is installed at J2 allows you to connect a ribbon cable that leads to a standard DE-9 serial connector. • RS-485—One RS-485 serial port is available on the Prototyping Board at shrouded header J1. A 3-pin shrouded header is installed at J1. A jumper on header JP2 enables the RS-485 output for Serial Port E. • IrDA—An infrared transceiver is included on the Prototyping Board, and is capable of handling link distances up to 1.5 m. The IrDA uses Serial Port F—Serial Ports C and D are unavailable while Serial Port F is in use. • Backup Battery—A 2032 lithium-ion battery rated at 3.0 V, 220 mA·h, provides battery backup for the RCM3700 SRAM and real-time clock. RabbitCore RCM3700 User’s Manual 93 RCM3700 B.1.2 Mechanical Dimensions and Layout (5) 0.20 Figure B-2 shows the mechanical dimensions and layout for the RCM3700 Prototyping Board. RXC TXC RXE NC D4 D2 D0 A1 A3 GND LED6 LED4 LED2 LED0 /RSTET D6 +5V +3.3V D7 D5 D3 D1 A0 GND GND LED5 LED3 A2 (114) 4.50 4.10 (104) GND D4 D5 D6 D2 D3 D7 D0 D1 GND A1 A1 LCD1JC CX4 CX5 JP7 CX6 R27 CX7 R28 R35 R36 CX8 C35 UX2 R43 00 C34 AIN C32 C33 R41 R42 CX11 AGND 01 03 04 R39 R40 02 C30 C31 R44 THERM_IN R37 AGND VREF C29 AIN R38 06 JP8 J7 THERMISTOR CONVERT R31 R32 R33 R34 05 R30 R29 DS1 CX9 CX10 DS3 DS2 J8 R48 RCM36/37XX SERIES PROTOTYPING BOARD LCD1JB A3 CX3 A2 VBAT CX2 /RESET PD4 NC NC JP6 NC NC JP5 NC NC C28 +V PE1 UX1 R26 /CS R24 LED1 PE5 RP1 JP4 U8 PC0_TXD +V CX1 +BKLT PG7_RXE GND PE0 PG6 TXE PD5 LED6 PC1/PG2 LED4 PF6 GND PF5 PF7 PC3/ PG3 PC2 TXC PE4 LCD1JA LED2 PF4 GND PF1 BT1 LDE0 +5V LED5 PF0 LED3 /RES /CS U7 R15 PB0 R14 LED1 1 2 R22 R23 C24 C25 C27 R25 PA6 PA4 PA2 PA0 PF0 PB2 PB4 PB7 PC1/ PF7 PG2 PF5 PC3/PG3 C21 L2 R18 R19 R20 C23 PA6 PA7 +BKLT R21 PA5 PB7 +5V C26 PE5 /IOWR PG7 RXE C20 PE1 PD4 /RES GND C22 PA0 PA3 GND PA7 PA5 PA3 PA1 PF1 PB0 PB3 PB5 PF4 PF6 PC0_TXD PE7 PE4 PE0 PC2_TXC PG6_TXE /IORD PD5 VBAT TCM_SMT_SOCKET GND +5V R13 J5 PB2 PA1 C11 DCIN U2 C18 U6 C17 U5 +3.3V C7 PB3 PA4 PA2 R12 GND TXE RXD GND C9 R11 PB5 PB4 L1 C16 /IORD PE7 D2 C13 GND GND /IOWR C6 U4 C8 C10 U3 C3 TXD 485 C5 GND JP2 C4 R5 R16 C19 D1 C12 J1 +485 Rx JP1 R1 R2 R3 R4 C14 C15 J4 R9 IR1 R6 U1 J2 GND R8 R7 C2 Tx GND C1 R45 R49 R46 R47 RESET S1 S2 S3 6.10 0.20 (155) (5) 6.50 0.20 0.20 (5) (5) (165) Figure B-2. RCM3700 Prototyping Board Dimensions RabbitCore RCM3700 User’s Manual 94 Table B-1. RCM3700 Prototyping Board Specifications Parameter Specification Board Size 4.50" × 6.50" × 0.75" (114 mm × 165 mm × 19 mm) Operating Temperature –20°C to +60°C Humidity 5% to 95%, noncondensing Input Voltage 7.5 V to 30 V DC Maximum Current Draw 800 mA max. for +3.3 V supply, (including user-added circuits) 1 A total +3.3 V and +5 V combined A/D Converter 8-channel ADS7870 with programmable gain configurable for 11-bit single-ended, 12-bit differential, and 4–20 mA inputs • Input impedance 6–7 M • A/D conversion time (including 120 µs raw count and Dynamic C) 180 µs IrDA Transceiver HSDL-3602, link distances up to 1.5 m Prototyping Area 2.5" × 3" (64 mm × 76 mm) throughhole, 0.1" spacing, additional space for SMT components Standoffs/Spacers 5, accept 4-40 × 1/2 screws B.1.3 Power Supply The RCM3700 requires a regulated 4.75 V to 5.25 V DC power source to operate. Depending on the amount of current required by the application, different regulators can be used to supply this voltage. The RCM3700 Prototyping Board has an onboard +5 V switching power regulator from which a +3.3 V linear regulator draws its supply. Thus both +5 V and +3.3 V are available on the RCM3700 Prototyping Board. The RCM3700 Prototyping Board itself is protected against reverse polarity by a Shottky diode at D2 as shown in Figure B-3. SWITCHING POWER REGULATOR J4 POWER IN RCM3700 Table B-1 lists the electrical, mechanical, and environmental specifications for the RCM3700 Prototyping Board. 1 2 3 DCIN +5 V D2 1N5819 C19 47 µF 3 U2 330 µH LM2575 LINEAR POWER REGULATOR +3.3 V 330 µF 10 µF LM1117 U1 1 2 10 µF L1 D1 1N5819 Figure B-3. RCM3700 Prototyping Board Power Supply RabbitCore RCM3700 User’s Manual 95 RCM3700 B.1.4 Using the RCM3700 Prototyping Board The RCM3700 Prototyping Board is actually both a demonstration board and a prototyping board. As a demonstration board, it can be used to demonstrate the functionality of the RCM3700 right out of the box without any modifications. Figure B-4 shows the RCM3700 Prototyping Board pinouts. GND RxC TxC RxE RS-485 GND RS-485+ RS-485 J2 RS-232 GND TxD RxD TxE GND J1 J3 GND /IOWR RCM3700 Non-Analog Signals J7 J8 /IORD PE7 PB5 PB4 PB3 PB2 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB0 PB7 /RES PF0 +5 V PF1 PF4 PF5 PF6 PF7 PC1/PG2 PC3/PG3 PC0_TxD PC2_TxC PE5 PE4 PE1 PE0 PG7_RxE PG6_TxE Thermistor GND PD5 PD4 VBAT J9 THERM_IN7 ADC_IN6 ADC_IN5 ADC_IN4 ADC_IN3 ADC_IN2 ADC_IN1 THERM_IN0 ANALOG_GND VREF CONVERT ANALOG_GND J3 Analog I/O Figure B-4. RCM3700 Prototyping Board Pinout RabbitCore RCM3700 User’s Manual 96 RCM3700 The RCM3700 Prototyping Board comes with the basic components necessary to demonstrate the operation of the RCM3700. Two LEDs (DS1 and DS2) are connected to PF6 and PF7, and two switches (S1 and S2) are connected to PF4 and PB7 to demonstrate the interface to the Rabbit 3000 microprocessor. Reset switch S3 is the hardware reset for the RCM3700. The RCM3700 Prototyping Board provides the user with RCM3700 connection points brought out conveniently to labeled points at header J3 on the RCM3700 Prototyping Board. Although header J3 is unstuffed, a 2 × 20 header is included in the bag of parts. RS-485 signals are available on shrouded header J1, and RS-232 signals (Serial Ports C, D, and E) are available on header J2. A header strip at J2 allows you to connect a ribbon cable. A shrouded header connector and wiring harness are included with the RCM3700 Development Kit parts to help you access the RS-485 signals on shrouded header J1. There is a 2.5" × 3" through-hole prototyping space available on the RCM3700 Prototyping Board. The holes in the prototyping area are spaced at 0.1" (2.5 mm). +3.3 V, +5 V, and GND traces run along both edges of the prototyping area for easy access. Small to medium circuits can be prototyped using point-to-point wiring with 20 to 30 AWG wire between the prototyping area, the +3.3 V, +5 V, and GND traces, and the surrounding area where surface-mount components may be installed. Small holes are provided around the surfacemounted components that may be installed around the prototyping area. B.1.4.1 Adding Other Components There are two sets of pads for 28-pin devices that can be used for surface-mount prototyping SOIC devices. (Although the adjacent sets of pads could accommodate up to a 56-pin device, they do not allow for the overlap between two 28-pin devices.) There are also pads that can be used for SMT resistors and capacitors in an 0805 SMT package. Each component has every one of its pin pads connected to a hole in which a 30 AWG wire can be soldered (standard wire-wrap wire can be soldered in for point-to-point wiring on the RCM3700 Prototyping Board). Because the traces are very thin, carefully determine which set of holes is connected to which surface-mount pad. RabbitCore RCM3700 User’s Manual 97 RCM3700 B.1.5 Analog Features The RCM3700 Prototyping Board has an onboard ADS7870 A/D converter to demonstrate the interface capabilities of the Rabbit 3000. The A/D converter multiplexes converted signals from eight single-ended or three differential inputs to alternate Serial Port B on the Rabbit 3000 (Parallel Port pins PD4 and PD5). B.1.5.1 A/D Converter Inputs Figure B-5 shows a pair of A/D converter input circuits. The resistors form an approximately 10:1 attenuator, and the capacitor filters noise pulses from the A/D converter input. +V User Circuits VREF ADC_IN0 178 kW ADC 20 kW 1 nF 20 kW JP7 ADC_IN1 178 kW AGND 1 nF Figure B-5. A/D Converter Inputs The A/D converter chip can make either single-ended or differential measurements depending on the value of the opmode parameter in the software function call. Adjacent A/D converter inputs can be paired to make differential measurements. The default setup on the Prototyping Board is to measure only positive voltages for the ranges listed in Table B-2. RabbitCore RCM3700 User’s Manual 98 RCM3700 Table B-2. Positive A/D Converter Input Voltage Ranges Min. Voltage (V) Max. Voltage (V) Amplifier 0.0 +20.0 1 10 0.0 +10.0 2 5 0.0 +5.0 4 2.5 0.0 +4.0 5 2.0 0.0 +2.5 8 1.25 0.0 +2.0 10 1.0 0.0 +1.25 16 0.625 0.0 +1.0 20 0.500 Gain mV per Count Other possible ranges are possible by physically changing the resistor values that make up the attenuator circuit. It is also possible to read a negative voltage on ADC_IN0 to ADC_IN5 by moving the jumper (see Figure B-5) on header JP7, JP6, or JP5 associated with the A/D converter input from analog ground to VREF, the reference voltage generated and buffered by the A/D converter. Adjacent input channels are paired so that moving a particular jumper changes both of the paired channels. At the present time Rabbit does not offer the software drivers to work with single-ended negative voltages, but the differential mode described below may be used to measure negative voltages. NOTE: THERM_IN7 was configured to illustrate the use of a thermistor with the sample program, and so is not available for use as a differential input. There is also no resistor attenuator for THERM_IN7, so its input voltage range is limited. Differential measurements require two channels. As the name differential implies, the difference in voltage between the two adjacent channels is measured rather than the difference between the input and analog ground. Voltage measurements taken in differential mode have a resolution of 12 bits, with the 12th bit indicating whether the difference is positive or negative. The A/D converter chip can only accept positive voltages. Both differential inputs must be referenced to analog ground, and both inputs must be positive with respect to analog ground. Table B-3 provides the differential voltage ranges for this setup. RabbitCore RCM3700 User’s Manual 99 RCM3700 Table B-3. Differential Voltage Ranges Min. Differential Voltage (V) Max. Differential Voltage (V) Amplifier 0 ±20.0 x1 10 0 ±10.0 x2 5 0 ±5.0 x4 2.5 0 ±4.0 x5 2.0 0 ±2.5 x8 1.25 0 ±2.0 x10 1.00 0 ±1.25 x16 0.625 0 ±1.0 x20 0.500 Gain mV per Count The A/D converter inputs can also be used with 4–20 mA current sources by measuring the resulting analog voltage drop across 249 1% precision resistors placed between the analog input and analog ground for ADC_IN3 to ADC_IN6. Be sure to reconfigure the jumper positions on header JP8 as shown in Section B.1.8 using the slip-on jumpers included with the spare parts in the Development Kit. B.1.5.2 Thermistor Input Analog input THERM_IN7 on the Prototyping Board was designed specifically for use with a thermistor in conjunction with the THERMISTOR.C sample program, which demonstrates how to use analog input THERM_IN7 to calculate temperature for display to the Dynamic C STDIO window. The sample program is targeted specifically for the thermistor included with the Development Kit with R0 @ 25°C = 3 k and 25/85 = 3965. Be sure to use the applicable R0 and values for your thermistor if you use another thermistor. Install the thermistor at location J7, which is shown in Figure B-4. VREF 1 kW Thermistor J7 THERM_IN7 ANALOG_GND ADC ADC Figure B-6. RCM3700 Prototyping Board Thermistor Input RabbitCore RCM3700 User’s Manual 100 RCM3700 B.1.5.3 Other A/D Converter Features The A/D converter’s internal reference voltage is software-configurable for 1.15 V, 2.048 V, or 2.5 V using the #define AD_OSC_ENABLE macro in the Dynamic C RCM37xx.LIB library. The scaling circuitry on the Prototyping Board and the sample programs are optimized for an internal reference voltage of 2.048 V. This internal reference voltage is available on pin 3 of shrouded header J8 as VREF, and allows you to convert analog input voltages that are negative with respect to analog ground. NOTE: The amplifier inside the A/D converter’s internal voltage reference circuit has a very limited output-current capability. The internal buffer can source up to 20 mA and sink only up to 20 µA. A separate buffer amplifier at U7 supplies the load current. The A/D converter’s CONVERT pin is available on pin 2 of shrouded header J8, and can be used as a hardware means of forcing the A/D converter to start a conversion cycle. The CONVERT signal is an edge-triggered event and has a hold time of two CCLK periods for debounce. A conversion is started by an active (rising) edge on the CONVERT pin. The CONVERT pin must stay low for at least two CCLK periods before going high for at least two CCLK periods. Figure B-7 shows the timing of a conversion start. The double falling arrow on CCLK indicates the actual start of the conversion cycle. Conversion starts CCLK BUSY CONV Figure B-7. Timing Diagram for Conversion Start Using CONVERT Pin RabbitCore RCM3700 User’s Manual 101 RCM3700 B.1.5.4 A/D Converter Calibration To get the best results from the A/D converter, it is necessary to calibrate each mode (single-ended, differential, and current) for each of its gains. It is imperative that you calibrate each of the A/D converter inputs in the same manner as they are to be used in the application. For example, if you will be performing floating differential measurements or differential measurements using a common analog ground, then calibrate the A/D converter in the corresponding manner. The calibration must be done with the attenuator reference selection jumper in the desired position (see Figure B-5). If a calibration is performed and the jumper is subsequently moved, the corresponding input(s) must be recalibrated. The calibration table in software only holds calibration constants based on mode, channel, and gain. Other factors affecting the calibration must be taken into account by calibrating using the same mode and gain setup as in the intended use. Sample programs are provided to illustrate how to read and calibrate the various A/D inputs for the three operating modes. Mode Single-Ended, one channel Read — Calibrate AD_CALSE_CH.C Single-Ended, all channels AD_RDSE_ALL.C AD_CALSE_ALL.C Milliamp, one channel AD_RDMA_CH.C AD_CALMA_CH.C Differential, analog ground AD_RDDIFF_CH.C AD_CALDIFF_CH.C These sample programs are found in the Dynamic C SAMPLES\RCM3700\ADC subdirectory. See Section 3.2.3 for more information on these sample programs and how to use them. RabbitCore RCM3700 User’s Manual 102 RCM3700 B.1.6 Serial Communication The RCM3700 Prototyping Board allows you to access five of the serial ports from the RCM3700 module. Table B-4 summarizes the configuration options. Table B-4. RCM3700 Prototyping Board Serial Port Configurations Serial Port Signal Header Configured via Header Default Use Alternate Use C J2 JP2 RS-232 — D J2 JP2 RS-232 — E J1, J2 JP1, JP2 RS-485 (J1) RS-232 (J2) Serial Port E is configured in hardware for RS-232 or RS-485 via jumpers on header JP2 as shown in Section B.1.8. Serial Port F is configured in software for the IrDA transceiver in lieu of Serial Ports C and D. RabbitCore RCM3700 User’s Manual 103 RCM3700 B.1.6.1 RS-232 RS-232 serial communication on the RCM3700 Prototyping Board is supported by an RS-232 transceiver installed at U4. This transceiver provides the voltage output, slew rate, and input voltage immunity required to meet the RS-232 serial communication protocol. Basically, the chip translates the Rabbit 3000’s signals to RS-232 signal levels. Note that the polarity is reversed in an RS-232 circuit so that a +5 V output becomes approximately -10 V and 0 V is output as +10 V. The RS-232 transceiver also provides the proper line loading for reliable communication. RS-232 can be used effectively at the RCM3700 module’s maximum baud rate for distances of up to 15 m. RS-232 flow control on an RS-232 port is initiated in software using the serXflowcontrolOn function call from RS232.LIB, where X is the serial port (C or D). The locations of the flow control lines are specified using a set of five macros. SERX_RTS_PORT—Data register for the parallel port that the RTS line is on (e.g., PCDR). SERA_RTS_SHADOW—Shadow register for the RTS line's parallel port (e.g., PCDRShadow). SERA_RTS_BIT—The bit number for the RTS line. SERA_CTS_PORT—Data register for the parallel port that the CTS line is on (e.g., PCDRShadow). SERA_CTS_BIT—The bit number for the CTS line. Standard 3-wire RS-232 communication using Serial Ports C and D is illustrated in the following sample code. #define CINBUFSIZE 15 #define COUTBUFSIZE 15 // set size of circular buffers in bytes #define DINBUFSIZE 15 #define DOUTBUFSIZE 15 #define MYBAUD 115200 #endif main(){ serCopen(_MYBAUD); serDopen(_MYBAUD); serCwrFlush(); serCrdFlush(); serDwrFlush(); serDrdFlush(); serCclose(_MYBAUD); serDclose(_MYBAUD); } RabbitCore RCM3700 User’s Manual // set baud rate // open Serial Ports C and D // flush their input and transmit buffers // close Serial Ports C and D 104 The RCM3700 Prototyping Board has one RS-485 serial channel, which is connected to the Rabbit 3000 Serial Port E through an RS-485 transceiver. The half-duplex communication uses an output from PF5 on the Rabbit 3000 to control the transmit enable on the communication line. Using this scheme a strict master/slave relationship must exist between devices to insure that no two devices attempt to drive the bus simultaneously. Serial Port E is configured in software for RS-485 as follows. #define #define #define #define #define #define ser485open serEopen ser485close serEclose ser485wrFlush serEwrFlush ser485rdFlush serErdFlush ser485putc serEputc ser485getc serEgetc #define EINBUFSIZE 15 #define EOUTBUFSIZE 15 The configuration shown above is based on circular buffers. RS-485 configuration may also be done using functions from the PACKET.LIB library. GND RS485+ RS-485 GND RS485+ RS-485 GND RS485+ The RCM3700 Prototyping Boards with RCM3700 modules installed can be used in an RS-485 multidrop network spanning up to 1200 m (4000 ft), and there can be as many as 32 attached devices. Connect the 485+ to 485+ and 485– to 485– using single twisted-pair wires as shown in Figure B-8. Note that a common ground is recommended. RS-485 RCM3700 B.1.6.2 RS-485 Figure B-8. RCM3700 Multidrop Network RabbitCore RCM3700 User’s Manual 105 Factory Default RXC TXC RXE NC D6 D4 D2 D0 A1 A3 GND LED6 LED4 LED2 LED0 /RSTET +V +5V GND +3.3V D7 D5 D3 D1 A0 A2 GND GND LED5 LED3 PE5 PE1 A3 A1 D0 D2 D4 D6 GND D1 D3 D5 D7 GND LCD1JC A1 LCD1JB A2 /RESET CX3 +5V VBAT CX2 GND PD4 /CS CX5 JP7 +BKLT CX4 UX1 R33 C8 C14 U11 C12 T1 Y3 C57 R29 R31 C22 CX6 R27 CX7 R28 CX8 C35 R43 UX2 CX11 AGND 01 R41 R42 02 03 04 R39 R40 R35 R36 00 C34 AIN C32 C33 C30 C31 R44 THERM_IN R37 AGND VREF CONVERT R31 R32 R33 R34 C29 AIN R38 06 JP8 J7 THERMISTOR 05 R30 R29 DS1 CX9 CX10 DS3 DS2 J8 R48 RCM36/37XX SERIES PROTOTYPING BOARD /CS PC0_TXD +V CX1 LED1 PG7_RXE +BKLT PE0 PG6 TXE PD5 GND PC1/PG2 LED6 PF6 LED4 PF5 PF7 PC3/ PG3 PC2 TXC PE4 LCD1JA GND PF4 LED2 +5V PF1 BT1 GND PF0 R15 LDE0 /RES +3.3V PA6 PB0 R14 LED5 PA6 PA7 U5 LED3 PA5 PB7 DCIN U2 C18 U6 C17 LED1 GND TXE PA7 PA5 PA4 PA2 PF0 PA0 PB2 PA0 PA3 NC NC NC PB2 PA4 PA2 C8 C10 PA3 PA1 PF1 PB0 PB3 PB5 PF6 PF4 PB7 PB4 PC0_TXD C10 C40 JP6 PB3 RP1 JP4 NC PC3/PG3 PE5 PC1/ PF7 PG2 PF5 2 PC2_TXC PE7 PE4 PE0 /IORD PD5 VBAT PG6_TXE L1 PD4 C49 R27 GND L2 Q1 GND R7 R15 R16 C36 Y1 C39 R13 C29 DS2 J3 +5V L6 1 R11 C37 R28 C53 R32 R30 R34 C21 C24 L3 NC U4 C16 D1 C54 C55 NC C20 U5 R5 R4 L4 /IOWR PG7 RXE C20 PE1 C38 C41 DS1 U6 JP3 JP5 C17 C7 /RES RXD GND C9 J2 JP1 C19 U1 C25 U3 C32 C30 C28 C33 485 C18 U8 R6 R8 681 W bias R24 R26 R9 220 W C31 U7 C34 R23 C24 C25 R18 C21 L2 R18 R19 R20 terminationR22 R21 R24 R2 C26 R36 5 1 2 C23 C27 R25 R7 681 W JP2 U8 C22 bias R13 TCM_SMT_SOCKET +3.3 V PB5 PB4 L1 C16 /IORD PE7 PA1 C11 C27 C28 6 C7 R12 U4 C26 R16 C23 C58 7 J5 R26 6 485 R11 JP1 C6 C15 Tx +485 U3 C3 485+ U3 C5 D2 C13 GND GND /IOWR GND JP2 C4 R6 C19 D1 C12 J1 TXD JP1 RP2 Rx IR1 R1 R2 R3 R4 C14 C15 J4 R9 4 R52 6 U1 J2 C35 JP1 R8 R7 C2 RP1 1 3 5 GND C1 R45 R49 R46 R47 RESET S1 S2 S3 Figure B-9. RS-485 Termination and Bias Resistors For best performance, the termination resistors in a multidrop network should be enabled only on the end nodes of the network, but not on the intervening nodes. Jumpers on boards whose termination resistors are not enabled may be stored across pins 1–3 and 4–6 of header JP1. RabbitCore RCM3700 User’s Manual 106 RCM3700 The RCM3700 Prototyping Board comes with a 220 termination resistor and two 681 bias resistors installed and enabled with jumpers across pins 1–2 and 5–6 on header JP1, as shown in Figure B-9. RCM3700 B.1.7 Other Prototyping Board Modules An optional LCD/keypad module is available that can be mounted on the RCM3700 Prototyping Board. The signals on headers LCD1JB and LCD1JC will be available only if the LCD/keypad module is installed. Refer to Appendix C, “LCD/Keypad Module,” for complete information. CAUTION: Pin PB7 is connected as both switch S2 and as an external I/O bus on the Prototyping Board. Do not use S2 when the LCD/keypad module is installed. RabbitCore RCM3700 User’s Manual 107 RCM3700 B.1.8 Jumper Configurations Figure B-10 shows the header locations used to configure the various RCM3700 Prototyping Board options via jumpers. JP1 JP2 Battery JP4 JP8 JP5 JP6 JP7 Figure B-10. Location of RCM3700 Prototyping Board Configurable Positions RabbitCore RCM3700 User’s Manual 108 RCM3700 Table B-5 lists the configuration options using jumpers. Table B-5. RCM3700 Prototyping Board Jumper Configurations Header JP1 JP2 JP4 JP5 JP6 JP7 JP8 Pins Connected Factory Default 1–2 5–6 Bias and termination resistors connected × 1–3 4–6 Bias and termination resistors not connected (parking position for jumpers) 1–3 2–4 RS-232 3–5 4–6 RS-485 × 1 PIO_0 n.c. 2 PIO_1 n.c. 3 PIO_2 n.c. 4 PIO_3 n.c. Description RS-485 Bias and Termination Resistors RS-232/RS-485 on Serial Port E A/D Converter Outputs 1–2 Tied to VREF 2–3 Tied to analog ground 1–2 Tied to VREF 2–3 Tied to analog ground 1–2 Tied to VREF 2–3 Tied to analog ground × 1–2 Connect for 4–20 mA option on ADC_IN3 n.c. 3–4 Connect for 4–20 mA option on ADC_IN4 n.c. 5–6 Connect for 4–20 mA option on ADC_IN5 n.c. 7–8 Connect for 4–20 mA option on ADC_IN6 n.c. ADC_IN4–ADC_IN5 ADC_IN2–ADC_IN3 ADC_IN0–ADC_IN1 Analog Voltage/4–20 mA Options RabbitCore RCM3700 User’s Manual × × 109 RCM3700 B.1.9 Use of Rabbit 3000 Parallel Ports Table B-6 lists the Rabbit 3000 parallel ports and their use for the RCM3700 Prototyping Board. Table B-6. RCM3700 Prototyping Board Use of Rabbit 3000 Parallel Ports Port I/O Use Initial State PA0–PA7 Output External ID0–ID7, LCD/keypad module High (core module) PB0 Output CLKB, A/D Converter SCLK PB1 Output CLKA Programming Port PB2–PB5 Output External IA0–IA3, LCD/keypad module PB6 Output IA4, not used PB7 Output External IA5, Switch S2 PC0 Output TXD RS-232 High (SCLK set by driver) High (core module) (when not driven by CLKA) High High (core module) High High (set by drivers) Serial Port D PC1 Input RXD RS-232 PC2 Output TXC RS-232 Pulled up (core module) High (set by drivers) Serial Port C PC3 Input PC4 Output RXC RS-232 Pulled up (core module) TXB Serial Flash High (set by drivers) Serial Port B PC5 Input PC6 Output RXB Serial Flash Pulled up (core module) TXA Programming Port High (when not driven) Serial Port A PC7 Input RXA Programming Port Pulled up (core module) PD0 Output Ethernet RSTDRV Pulled up (core module) PD1 Input Ethernet BD5 (EESK) Set by Ethernet PD2 Input Ethernet BD6 (EEDI) Set by Ethernet PD3 Input Ethernet BD6 (EEDO) Set by Ethernet PD4 Output ATXB, A/D converter SDI High (set by driver) PD5 Input ARXB, A/D converter SDO Pulled up (core module) PD6–PD7 Input Not used Pulled up (core module) PE0 Output IrDA MD0 Pulled up (Proto Board) PE1 Output IrDA MD1 Pulled down (Proto Board) PE2 Output Ethernet AEN High (driven by Ethernet) PE3 Input PE4 Output IrDA FIR_SEL Low (slow baud rate) PE5 Output RS-232 enable Pulled up (Proto Board) Not used RabbitCore RCM3700 User’s Manual Pulled up (core module) 110 RCM3700 Table B-6. RCM3700 Prototyping Board Use of Rabbit 3000 Parallel Ports Port I/O Use Initial State PE6 Output Serial Flash Select Pulled up (core module) PE7 Output LCD/keypad module BUFEN Pulled up (Proto Board) PF0 Output A/D converter select line Pulled up (Proto Board) PF1 Input A/D converter busy PF2–PF3 Input Not used Pulled up (core module) PF4 Input Switch S1 Pulled up (Proto Board) PF5 Output RS-485 Tx enable PF6 Output LED DS1 High PF7 Output LED DS2 High PG0–PG1 Input Not used Pulled up (Proto Board) PG2 Input TXF IrDA Pulled down (Proto Board) Pulled down (Proto Board) Pulled up (core module)— tied to PC1 Serial Port F PG3 Input RXF IrDA PG4–PG5 Input Not used PG6 Output Pulled up (core module)— tied to PC3 Pulled up (Proto Board) TXE RS-485 or RS-232 High (set by drivers) Serial Port E PG7 Input RXE RS-485 or RS-232 RabbitCore RCM3700 User’s Manual Pulled up (set by drivers) 111 The RCM3720 Prototyping Board included in the Ethernet Connection Kit makes it easy to connect an RCM3720 module to a power supply and a PC workstation for development. It also provides some basic I/O peripherals (LEDs and switches), as well as a prototyping area for more advanced hardware development. An optional RS-232 chip can be added for RS-232 serial communication. For the most basic level of evaluation and development, the RCM3720 Prototyping Board can be used without modification. As you progress to more sophisticated experimentation and hardware development, modifications and additions can be made to the board without modifying or damaging the RCM3720 module itself. The RCM3720 Prototyping Board is shown below in Figure B-11, with its main features identified. Voltage Regulator Surface-Mount RS-232 Chip C13 C10 PB0 PF1 PA1 PA3 PA5 PA7 PA0 PA2 PA4 PA6 GND PB3 R7 PB5 PF4 PF0 PE7 C11 PC2 PF6 PE4 PC0 PE0 PG6 /IORD PD5 VBAT +5V PB2 C14 R8 J6 U2 PA7 PC0_TXD PC2_TXC J3 GND TXD RXD RESET J7 S3 POWER R1 J4 GND TXD RXD RXC TXC RXC TXC 2 1 D2 S1 3 S2 4 2 GND Through-Hole RS-232 Chip (leave unstuffed) RS-232 Header Reset Switch PF4 4 R5 1 PF7 +5V UX3 3 2 C6 CX14 4 R4 DS1 PF6 U1 DS3 DS2 UX2 C8 R3 CX13 RX6 RX16 RX5 UX9 RX15 DS2 DS1 SW2 SW1 PA6 PA4 PA2 PA0 PF0 PF5 PB2 PB4 PB7 PF1 PE5 PC1/PG2 PF7 PF6 PB7 PF4 C4 CX12 RX14 3 1 C3 PB7 CX11 Through-Hole Prototyping Area RX4 RX3 RX13 PE1 CX8 CX6 UX1 UX8 RX12 VIN GND UX7 CX9 SMT Prototyping Area RX11 GND C1 C5 CX10 RX10 PC1/ PG2_RXD PC3/ PG3_RXC R2 RX9 J8 CX7 RX2 CX4 CX2 RX7 RX8 CX5 CX3 CX1 RX1 RCM3720 Module Extension Header PC3/PG3 RCM3720 PROTOTYPING BOARD PG7 /IOWR PD4 GND GND /RES BT1 J2 Power Input C7 C2 C9 D1 J1 PA5 PA3 PA1 PF1 PF5 PF7 PB7 PB3 PB0 C53 PB5 PF4 PC1/PG2 PF6 PE5 PC3/PG3 PC0 PC2 PE1 PE7 PG7 PE4 /IOWR PE0 GND GND PD4 PG6 /IORD PD5 VBAT +5V /RES J5 Backup Battery Heat Sink U3 C12 R6 PB4 RCM3720 Module Connector +5 V and GND Buses Power LED User Switches User LEDs Figure B-11. RCM3720 Prototyping Board RabbitCore RCM3700 User’s Manual 112 RCM3720 B.2 RCM3720 Prototyping Board RCM3720 B.2.1 Features • Power Connection—A 3-pin header is provided for connection to the power supply. Note that the 3-pin header is symmetrical, with both outer pins connected to ground and the center pin connected to the raw DCIN input. The cable of the AC adapter provided with the North American version of the Ethernet Connection Kit ends in a plug that connects to the power-supply header, and can be connected to the 3-pin header in either orientation. Users providing their own power supply should ensure that it delivers 7.5–15 V DC at 200 mA. The voltage regulator will get warm while in use. • Linear Power Supply—The raw DC voltage provided at the POWER IN power-input jack is routed to a 5 V linear voltage regulator. The regulator provides stable power to the RCM3720 module and the Prototyping Board. • Power LED—The power LED lights whenever power is connected to the Prototyping Board. • Reset Switch—A momentary-contact, normally open switch is connected directly to the RCM3720’s /RESET_IN pin. Pressing the switch forces a hardware reset of the system. • I/O Switches and LEDs—Two momentary-contact, normally open switches are connected to the PF4 and PB7 pins of the RCM3720 module and may be read as inputs by sample applications. Two LEDs are connected to the PF6 and PF7 pins of the RCM3720 module, and may be driven as output indicators by sample applications. • Prototyping Area—A generous prototyping area has been provided for the installation of through-hole components. +5 V and ground buses run along the bottom edge of this area. Several areas for surface-mount devices are also available. (Note that there are SMT device pads on both top and bottom of the Prototyping Board.) Each SMT pad is connected to a hole designed to accept a 30 AWG solid wire or wire-wrap wire. • Module Extension Headers—The complete pin set of the RCM3720 module is duplicated at header J2. Developers can solder wires directly into the appropriate holes, or, for more flexible development, a 2 × 20 header strip with a 0.1" pitch can be soldered into place. See Figure B-14 for the header pinouts. • RS-232—The RS-232 chip brings out Serial Ports C and D to the header J7 area on the RCM3720 Prototyping Board. A 2 × 5 header strip with a 0.1" pitch is installed at J7 to allow you to connect a ribbon cable that leads to a standard DB9 serial connector. Two 3-wire serial ports or one 5-wire RS-232 serial port are available at header J7. • Backup Battery—A 2032 lithium-ion battery rated at 3.0 V, 220 mA·h, provides battery backup for the RCM3720 SRAM and real-time clock. RabbitCore RCM3700 User’s Manual 113 B.2.2 Mechanical Dimensions and Layout (3.8) 0.15 Figure B-12 shows the mechanical dimensions and layout for the RCM3720 Prototyping Board. C13 C10 C14 VBAT PD5 /IORD PG6 PE0 PE4 PE7 C11 PC2 PB3 R7 PB0 PF1 PA1 PA3 PA5 PA7 GND /RES PD4 /IOWR PG7 PE1 PE5 PC3/PG3 PC1/PG2 PF7 PF5 PB7 PB4 PB2 PF0 PA0 PA2 PA4 PA6 PD5 /IORD PG6 PE0 PE4 PE7 PC2 PC0 PF6 PF4 PB5 PB3 PB0 PF1 PA1 PA3 PA5 PA7 PB5 J6 U2 C7 C2 C9 D1 PC0_TXD J1 PC2_TXC S1 R5 1 3 S2 4 2 GND 4.100 0.15 (104) (3.8) (98) GND TXD RXD RESET J7 PF4 PF6 +5V UX3 3 4 2 D2 R3 CX14 4 R4 1 C6 UX2 3.856 J3 GND TXD RXD RXC TXC S3 POWER R1 J4 PF7 PF6 PB7 PF4 RXC TXC DS3 PF7 CX13 RX6 RX16 RX5 UX9 RX15 C8 U1 CX12 RX14 DS2 DS1 SW2 SW1 PA6 PA4 PA2 C4 UX1 2 PB7 CX11 3 1 C3 R2 RX13 PA0 C5 RX4 RX3 RX12 PF0 PB2 PB4 PF5 PB7 PF1 PC1/PG2 CX8 CX6 CX9 UX8 RX11 VIN GND UX7 CX10 RX10 GND C1 DS1 RX9 PC1/ PG2_RXD PC3/ PG3_RXC DS2 RX1 RX8 J8 CX7 RX2 CX4 CX2 RX7 CX5 CX3 CX1 PC3/PG3 RCM3720 PROTOTYPING BOARD PE5 PE1 PG7 PD4 /IOWR GND GND /RES BT1 J2 (90) +5V J5 3.556 PF4 PF6 PC0 R8 GND +5V GND VBAT R6 RCM3720 U3 C12 4.400 0.15 (3.8) 0.15 (3.8) (112) Figure B-12. RCM3720 Prototyping Board Dimensions RabbitCore RCM3700 User’s Manual 114 Table B-1 lists the electrical, mechanical, and environmental specifications for the RCM3720 Prototyping Board. Table B-7. RCM3720 Prototyping Board Specifications Specification Board Size 3.856" × 4.400" × 0.37" (114 mm × 165 mm × 9 mm) Operating Temperature –20°C to +60°C Humidity 5% to 95%, noncondensing Input Voltage 7.5 V to 15 V DC Maximum Current Draw 225 mA max. (including user-added circuits) Prototyping Area 1.8" × 2.4" (46 mm × 61 mm) throughhole, 0.1" spacing, additional space for SMT components Mounting Holes 4, 0.156" (4 mm) diameter, accept 6-32 screws and #6 spacers B.2.3 Power Supply The RCM3720 requires a regulated 4.75 V to 5.25 V DC power source to operate. Depending on the amount of current required by the application, different regulators can be used to supply this voltage. The RCM3720 Prototyping Board has an onboard +5 V linear power regulator. The RCM3720 Prototyping Board itself is protected against reverse polarity by a Shottky diode at D1 as shown in Figure B-13. LINEAR POWER REGULATOR +5 V J1 POWER IN RCM3720 Parameter 1 2 3 DCIN D1 1N5819 1 C1 47 µF C9 10 µF LM13405-5 3 U2 2 C2 10 µF C7 330 µF Figure B-13. RCM3720 Prototyping Board Power Supply RabbitCore RCM3700 User’s Manual 115 B.2.4 Using the RCM3720 Prototyping Board The RCM3720 Prototyping Board is actually both a demonstration board and a prototyping board. As a demonstration board, it can be used to demonstrate the functionality of the RCM3720 right out of the box without any modifications. RCM3720 Figure B-14 shows the RCM3720 Prototyping Board pinouts. +5V VBAT PD5 /IORD PG6 PE0 PE4 PE7 PC2 PC0 PF6 PF4 PB5 PB3 PB0 PF1 PA1 PA3 PA5 PA7 RCM3720 Signals J2 GND GND /RES PD4 /IOWR PG7 PE1 PE5 PC3/PG3 PC1/PG2 PF1 PF5 PB7 PB4 PB2 PF0 PA0 PA2 PA4 PA6 RS-232 J7 GND TxC RxC RxD TxD Figure B-14. RCM3720 Prototyping Board Pinout RabbitCore RCM3700 User’s Manual 116 RCM3720 The RCM3720 Prototyping Board comes with the basic components necessary to demonstrate the operation of the RCM3720. Two LEDs (DS1 and DS2) are connected to PF6 and PF7, and two switches (S1 and S2) are connected to PF4 and PB7 to demonstrate the interface to the Rabbit 3000 microprocessor. Reset switch S3 is the hardware reset for the RCM3720. The RCM3720 Prototyping Board provides the user with RCM3720 connection points brought out conveniently to labeled points at header J2 on the RCM3720 Prototyping Board. Although header J2 is unstuffed, a 2 × 20 header strip with a 0.1" pitch can be installed. The 2 × 20 header (part number 405-0016) can be purchased through Rabbit’s online store. To maximize the availability of resources, the demonstration hardware (LEDs and switches) on the Prototyping Board may be disconnected. This is done by cutting the traces seen within the silkscreen outline for header J4 on the bottom side of the RCM3720 Prototyping Board. Figure B-15 shows the four traces where cuts should be made. An exacto knife or high-speed precision grinder tool like a Dremel® tool would work nicely to cut the traces. Alternatively, if safety is a major concern, a small standard screwdriver may be carefully and forcefully used to wipe through the PCB traces. Cut RCM3720 Prototyping Board Bottom Side Cut SW1 PF4 SW2 PB7 DS1 PF6 DS2 PF7 CUT HERE +5V GND Figure B-15. Where to Cut Traces to Permanently Disable Demonstration Hardware on RCM3720 Prototyping Board RabbitCore RCM3700 User’s Manual 117 A 2 × 4 header strip with a 0.1" pitch can be installed at J4, and jumpers across the appropriate pins on header J4 can be used to reconnect specific demonstration hardware later if needed. Each pin is labeled on the PCB to facilitate placing the jumpers. The jumper positions are summarized in Table B-8. RCM3720 Table B-8. RCM3720 Prototyping Board Jumper Settings Header J4 Pins Signal Description Demonstration Hardware 1–2 PF4 Switch S1 3–4 PB7 Switch S2 5–6 PF6 LED DS1 7–8 PF7 LED DS2 B.2.4.1 Prototyping Area There is a 1.8" × 2.4" through-hole prototyping space available on the RCM3720 Prototyping Board. The holes in the prototyping area are spaced at 0.1" (2.5 mm). +5 V and ground traces run along the bottom edge of the prototyping area for easy access. Small to medium circuits can be prototyped using point-to-point wiring with 20 to 30 AWG wire between the prototyping area, the +5 V, and ground traces, and the surrounding area where surface-mount components may be installed. Small holes are provided around the surfacemounted components that may be installed around the prototyping area. There are six sets of pads (three on each side) for 16-pin devices that can be used to surfacemount SOIC devices. There are also pads that can be used for SMT resistors and capacitors in an 0805 SMT package. Each component has every one of its pin pads connected to a hole in which a 30 AWG wire can be soldered (standard wire-wrap wire can be soldered in for point-to-point wiring on the RCM3720 Prototyping Board). Because the traces are very thin, carefully determine which set of holes is connected to which surface-mount pad. RabbitCore RCM3700 User’s Manual 118 RCM3720 Prototyping Boards sold before 2007 had no RS-232 chip installed, and so no RS-232 communication was possible. An optional through-hole RS-232 chip could be installed at U1 or a surface-mount RS-232 chip could be installed at U3. Five corresponding through-hole or surface-mount capacitors must also be installed. Figure B-16 shows where to install the RS-232 chip and its associated capacitors for the two options. Surface-Mount Option C13 C10 C11 DO NOT INSTALL BOTH OPTIONS! SP232ECT/EET chip C14 C12 (Z-World part no. 660-0188) five 0.1 µF capacitors U3 (Z-World part no. 321-0004) Through-Hole Option SP232ECP chip C13 C10 PE7 C11 PC2 four 0.1 µF capacitors PA7 PA5 PA3 PA1 PF1 PB0 (Z-World part no. 300-0005) PB5 PF4 PF6 PB3 U3 PC0 PE4 PE0 PG6 /IORD PD5 VBAT +5V R6 (Z-World part no. 660-0006) C14 C12 J5 PA6 PA4 U2 (Z-World part no. 330-0013) J6 C7 C2 C9 D1 PA7 PA2 PA5 PA0 PA3 PB2 PF0 PA1 PF1 PB4 PB0 PF5 PB7 PB3 PB5 PC1/PG2 PC3/PG3 PF7 PF4 PF6 PC0 PE5 PC2 PE1 PE7 PG7 PE4 /IOWR PE0 GND GND PD4 PG6 /IORD PD5 VBAT +5V /RES one 10 µF capacitor C3 C4 C5 C6 C8 0.1 0.1 0.1 10 0.1 PA4 PA2 PA0 PF0 PB2 PB4 PB7 PF5 PF1 PC1/PG2 PE5 PE1 PA6 R1 RESET DS3 PF4 C4 CP 232E U1 C6 3 S1 4 R5 1 3 S2 R2 +5V UX3 1 2 D2 CX14 3 4 R4 C6 R3 UX2 S3 2 PF7 CX13 RX6 RX16 RX5 UX9 RX15 C8 C3 4 2 PB7 POWER U1 CX12 RX14 C5 1 PF6 CX6 CX11 DS2 J3 DS1 RX13 DS1 PF7 C4 RX4 RX3 RX12 PF6 C8 UX1 UX8 RX11 SW2 C3 CX10 RX10 SW1 PB7 C5 UX7 CX9 J1 J4 PF4 DS2 RX9 CX7 RX2 CX4 RX1 RX7 RX8 CX5 CX3 C1 CX8 CX1 PC3/PG3 RCM3720 PROTOTYPING BOARD PG7 /IOWR PD4 GND GND BT1 /RES J2 CX2 RCM3720 B.2.5 Serial Communication GND Header J3 Figure B-16. Locations Where to Install RS-232 Chip and Capacitors NOTE: Only one RS-232 circuit needs to be stuffed. Rabbit offers the through-hole RS-232 chip and its associated capacitors for sale in a subassembly with some other parts (part number 151-0150). Contact your Rabbit sales representative or authorized distributor for more information. RS-232 serial communication on the RCM3720 Prototyping Board is supported by the RS-232 transceiver installed at U3. This transceiver provides the voltage output, slew rate, and input voltage immunity required to meet the RS-232 serial communication protocol. Basically, the chip translates the Rabbit 3000’s signals to RS-232 signal levels. Note that the polarity is reversed in an RS-232 circuit so that a +5 V output becomes approximately -10 V and 0 V is output as +10 V. The RS-232 transceiver also provides the proper line loading for reliable communication. RabbitCore RCM3700 User’s Manual 119 The RS-232 chip brings out Serial Ports C and D to header J7 on the RCM3720 Prototyping Board. A 2 × 5 header with a 0.1" pitch installed at J7 allows you to connect a ribbon cable that leads to a standard DB9 serial connector. Table B-9 summarizes the serial port locations. Table B-9. RCM3720 Prototyping Board Serial Port Locations Serial Port Signal Header Header Pins C J7 TxC…6 RxC…4 D J7 TxD…3 RxD…5 These serial ports can be configured in software as either one 5-wire or two 3-wire RS-232 channels. RS-232 flow control on an RS-232 port is initiated in software using the serXflowcontrolOn function call from RS232.LIB, where X is the serial port (C or D). The locations of the flow control lines are specified using a set of five macros. SERX_RTS_PORT—Data register for the parallel port that the RTS line is on (e.g., PCDR). SERA_RTS_SHADOW—Shadow register for the RTS line's parallel port (e.g., PCDRShadow). SERA_RTS_BIT—The bit number for the RTS line. SERA_CTS_PORT—Data register for the parallel port that the CTS line is on (e.g., PCDRShadow). SERA_CTS_BIT—The bit number for the CTS line. Standard 3-wire RS-232 communication using Serial Ports C and D is illustrated in the following sample code. #define CINBUFSIZE 15 #define COUTBUFSIZE 15 #define DINBUFSIZE 15 #define DOUTBUFSIZE 15 #define MYBAUD 115200 #endif main(){ serCopen(_MYBAUD); serDopen(_MYBAUD); serCwrFlush(); serCrdFlush(); serDwrFlush(); serDrdFlush(); } RabbitCore RCM3700 User’s Manual 120 RCM3720 RS-232 can be used effectively at the RCM3720 module’s maximum baud rate for distances of up to 15 m. B.2.6 Use of Rabbit 3000 Parallel Ports Table B-10 lists the Rabbit 3000 parallel ports and their use for the RCM3720 Prototyping Board. RCM3720 Table B-10. RCM3720 Prototyping Board Use of Rabbit 3000 Parallel Ports Port I/O Use Initial State PA0–PA7 Input PB0 Output CLKB, Serial Flash SCLK High PB1 Output CLKA Programming Port High (when not driven by CLKA) PB2–PB6 Output Not used PB7 Input PC0 Output Not used Pulled up (core module) High External IA5, Switch S2 Pulled up (Proto Board) TXD RS-232 High (set by drivers) Serial Port D PC1 Input RXD RS-232 PC2 Output TXC RS-232 Pulled up (core module) High (set by drivers) Serial Port C PC3 Input PC4 Output RXC RS-232 Pulled up (core module) TXB Serial Flash High (set by drivers) Serial Port B PC5 Input PC6 Output RXB Serial Flash Pulled up (core module) TXA Programming Port High (when not driven) Serial Port A PC7 Input RXA Programming Port Pulled up (core module) PD0 Output Ethernet RSTDRV Pulled up (core module) PD1 Input Ethernet BD5 (EESK) Set by Ethernet PD2 Input Ethernet BD6 (EEDI) Set by Ethernet PD3 Input Ethernet BD6 (EEDO) Set by Ethernet PD4–PD5 Output Not used High PD6–PD7 Input Not used Pulled up (core module) PE0–PE1 Output Not used High PE2 Output Ethernet AEN PE3 Input Not used Pulled up (core module) PE4–PE5 Output Not used High PE6 Input PE7 Output Not used High PF0 Output Not used High PF1 Input Not used Low Serial Flash Select RabbitCore RCM3700 User’s Manual High (driven by Ethernet) Pulled up (core module) 121 Table B-10. RCM3720 Prototyping Board Use of Rabbit 3000 Parallel Ports I/O Use PF2–PF3 Input Not used Pulled up (core module) PF4 Input Switch S1 Pulled up (Proto Board) PF5 Output Not used High PF6 Output LED DS1 High PF7 Output LED DS2 High PG0–PG1 Output Not used High PG2 Input Not used Pulled up (core module)— tied to PC1 PG3 Input Not used Pulled up (core module)— tied to PC3 PG4–PG7 Output Not used Pulled up (core module)— tied to PC3 RabbitCore RCM3700 User’s Manual Initial State RCM3720 Port 122 APPENDIX C. LCD/KEYPAD MODULE An optional LCD/keypad is available for the RCM3700 Prototyping Board. Appendix C describes the LCD/keypad and provides the software function calls to make full use of the LCD/keypad. C.1 Specifications Two optional LCD/keypad modules—with or without a panel-mounted NEMA 4 waterresistant bezel—are available for use with the Prototyping Board. They are shown in Figure C-1. LCD/Keypad Modules Figure C-1. LCD/Keypad Modules Versions Only the version without the bezel can mount directly on the Prototyping Board; if you have the version with a bezel, you will have to remove the bezel to be able to mount the LCD/keypad module on the Prototyping Board. Either version of the LCD/keypad module can be installed at a remote location up to 60 cm (24") away. Contact your sales representative or your authorized Rabbit distributor for further assistance in purchasing an LCD/keypad module. RabbitCore RCM3700 User’s Manual 123 Mounting hardware and a 60 cm (24") extension cable are also available for the LCD/keypad module through your Rabbit sales representative or authorized distributor. Table C-1 lists the electrical, mechanical, and environmental specifications for the LCD/keypad module. Table C-1. LCD/Keypad Specifications Parameter Specification Board Size 2.60" x 3.00" x 0.75" (66 mm x 76 mm x 19 mm) Bezel Size 4.50" × 3.60" × 0.30" (114 mm × 91 mm × 7.6 mm) Temperature Operating Range: 0°C to +50°C Storage Range: –40°C to +85°C Humidity 5% to 95%, noncondensing Power Consumption 1.5 W maximum* Connections Connects to high-rise header sockets on the RCM3700 Prototyping Board LCD Panel Size 122 x 32 graphic display Keypad 7-key keypad LEDs Seven user-programmable LEDs * The backlight adds approximately 650 mW to the power consumption. The LCD/keypad module has 0.1" IDC headers at J1, J2, and J3 for physical connection to other boards or ribbon cables. Figure C-2 shows the LCD/keypad module footprint. These values are relative to one of the mounting holes. (2.5) (19.5) 0.768 (15.4) 0.607 J1 (40.6) 0.200 (5.1) J3 J2 1.600 NOTE: All measurements are in inches followed by millimeters enclosed in parentheses. All dimensions have a manufacturing tolerance of ±0.01" (0.25 mm). 0.100 0.500 (12.7) 1.450 (36.8) 2.200 (55.9) Figure C-2. User Board Footprint for LCD/Keypad Module RabbitCore RCM3700 User’s Manual 124 C.2 Contrast Adjustments for All Boards Starting in 2005, LCD/keypad modules were factory-configured to optimize their contrast based on the voltage of the system they would be used in. Be sure to select a KDU3V LCD/keypad module for use with the RCM3700 Prototyping Board — these modules operate at 3.3 V. You may adjust the contrast using the potentiometer at R2 as shown in Figure C-3. LCD/keypad modules configured for 5 V may be used with the 3.3 V RCM3700 Prototyping Board, but the backlight will be dim. LCD/Keypad Module Jumper Configurations Description Pins Connected Factory Default 2.8 V 12 × 3.3 V 34 5V n.c. U3 D1 C7 JP1 R3 U2 C4 U1 R4 R5 C11 C13 U4 J5 CR1 C12 R7 LCD1 R6 D2 C1 C6 C9 C10 R2 C5 C2 Contrast Adjustment C3 J5 R1 Header Q1 J5 Part No. 101-0541 R8 R26 R14 2 R20 1 4 R17 3 R10 Q4 Q6 OTHER LP3500 3.3 V 2.8 V n.c. = 5 V R12 R9 Q7 Q2 U6 U5 Q5 R15 R18 R13 R16 R11 J5 R21 2 Q3 R19 4 R23 1 R22 3 J1 R25 Q8 J2 U7 C14 C16 R24 C15 KP1 C17 RN1 DISPLAY BOARD J4 Figure C-3. LCD/Keypad Module Voltage Settings You can set the contrast on the LCD display of pre-2005 LCD/keypad modules by adjusting the potentiometer at R2 or by setting the voltage for 3.3 V by connecting the jumper across pins 3–4 on header J5 as shown in Figure C-3. Only one of these two options is available on these LCD/keypad modules. NOTE: Older LCD/keypad modules that do not have a header at J5 or a contrast adjustment potentiometer at R2 are limited to operate only at 5 V, and will not work with the RCM3700 Prototyping Board. The older LCD/keypad modules are no longer being sold. RabbitCore RCM3700 User’s Manual 125 C.3 Keypad Labeling The keypad may be labeled according to your needs. A template is provided in Figure C-4 to allow you to design your own keypad label insert. 1.10 (28) 2.35 (60) Figure C-4. Keypad Template To replace the keypad legend, remove the old legend and insert your new legend prepared according to the template in Figure C-4. The keypad legend is located under the blue keypad matte, and is accessible from the left only as shown in Figure C-5. Keypad label is located under the blue keypad matte. Figure C-5. Removing and Inserting Keypad Label The sample program KEYBASIC.C in the 122x32_1x7 folder in SAMPLES\LCD_KEYPAD shows how to reconfigure the keypad for different applications. RabbitCore RCM3700 User’s Manual 126 C.4 Header Pinouts DB6B DB4B DB2B DB0B A1B A3B GND LED7 LED5 LED3 LED1 /RES VCC Figure C-6 shows the pinouts for the LCD/keypad module. J3 GND LED7 LED5 LED3 LED1 /RES VCC GND DB6B DB4B DB2B DB0B A1B A3B DB7B DB5B DB3B DB1B A0B A2B GND GND LED6 LED4 LED2 PE7 +5BKLT J1 GND GND LED6 LED4 LED2 PE7 +5BKLT GND DB7B DB5B DB3B DB1B A0B A2B J2 Figure C-6. LCD/Keypad Module Pinouts C.4.1 I/O Address Assignments The LCD and keypad on the LCD/keypad module are addressed by the /CS strobe as explained in Table C-2. Table C-2. LCD/Keypad Module Address Assignment Address Function 0xE000 Device select base address (/CS) 0xExx0–0xExx7 LCD control 0xExx8 LED enable 0xExx9 Not used 0xExxA 7-key keypad 0xExxB (bits 0–6) 7-LED driver 0xExxB (bit 7) LCD backlight on/off 0xExxC–ExxF Not used RabbitCore RCM3700 User’s Manual 127 C.5 Install Connectors on Prototyping Board Before you can use the LCD/keypad module with the RCM3700 Prototyping Board, you will need to install connectors to attach the LCD/keypad module to the RCM3700 Prototyping Board. These connectors are included with the RCM3700 Development Kit. First solder the 2 x 13 connector to location LCD1JA on the RCM3700 Prototyping Board as shown in Figure C-7. • If you plan to bezel-mount the LCD/keypad module, continue with the bezel-mounting instructions in Section C.7, “Bezel-Mount Installation.” • If you plan to mount the LCD/keypad module directly on the RCM3700 Prototyping Board, solder two additional 2 x 7 connectors at locations LCD1JB and LCD1JC on the RCM3700 Prototyping Board. Section C.6, “Mounting LCD/Keypad Module on the Prototyping Board,” explains how to mount the LCD/keypad module on the RCM3700 Prototyping Board. RXC TXC RXE NC D4 D2 +5V D0 A1 A3 GND LED6 LED4 LED2 LED0 /RSTET D6 D7 D5 D3 A0 A2 GND GND LED5 LED3 D1 D0 D2 D4 D6 GND D1 D3 D5 D7 GND LCD1JC R33 C8 T1 U11 C12 Y3 C57 R29 R31 C22 CX6 R27 CX7 R28 CX8 C35 R43 UX2 CX11 AGND 01 R41 R42 02 03 R35 R36 00 C34 AIN C32 C33 C30 C31 R39 R40 04 R44 THERM_IN R37 AGND VREF C29 AIN R38 06 JP8 J7 THERMISTOR CONVERT R31 R32 R33 R34 05 R30 R29 DS1 CX9 CX10 DS3 DS2 J8 R48 RCM36/37XX SERIES PROTOTYPING BOARD A1 CX5 JP7 LCD1JC A1 NC NC NC NC NC NC JP6 LCD1JB A3 C40 JP5 LCD1JB A2 L1 C14 C28 +V CX3 CX4 /CS VBAT /RESET PD4 CX2 UX1 R26 +V PE1 +BKLT C49 JP4 U8 PE5 RP1 R24 LCD1JA PC0_TXD +5V Q1 CX1 LCD1JA +3.3V PG7_RXE /CS PE0 PG6 TXE PD5 LED1 PC1/PG2 +BKLT PF6 GND PF5 PF7 PC3/ PG3 PC2 TXC PE4 LED6 PF4 LED4 +5V PF1 BT1 LED2 PF0 R15 GND /RES GND PB0 LDE0 PA6 PA7 LED5 PA5 LED3 PA3 PB7 DCIN U2 C18 U6 R14 LED1 PA0 C17 U5 GND GND GND PB2 PA4 PA2 DS2 1 PB3 +3.3V PA6 PA2 PA0 PF0 PB2 R7 C10 R11 C37 2 R32 R30 R27 R23 C24 C25 C27 R25 TXE PA7 PA5 PA3 PA1 PF1 PB0 PB3 PB5 PF4 PF6 PC0_TXD PE7 PE4 PE0 L2 PC1/ PF7 PG2 PF5 PB7 PC2_TXC PG6_TXE /IORD J3 +5V PD5 VBAT R28 L6 PE5 PB4 U4 R34 C21 C24 L3 R15 R16 C36 Y1 C39 R13 C29 C53 PD4 PA4 C20 U5 R5 L4 C16 D1 C54 C55 PC3/PG3 C17 R4 C38 C41 DS1 U6 JP3 /IOWR PG7 RXE C20 PE1 C15 C7 GND C32 C30 /RES TXD C9 J2 JP1 C19 U1 C25 U3 C33 GND C18 R6 R22 U7 C31 JP2 C21 L2 R18 R19 R20 C23 C34 C27 C28 R21 R18 TCM_SMT_SOCKET PB5 PB4 L1 C16 /IORD PE7 PA1 C11 R13 C26 U8 C26 R24 R2 R26 C23 C58 C22 R36 J5 C7 R12 U4 C8 C10 R11 RP2 U3 C3 C6 C35 R5 RXD 485 +485 C5 D2 C13 GND GND /IOWR GND JP2 C4 R16 C19 D1 C12 J1 RP1 Rx JP1 R1 R2 R3 R4 C14 C15 J4 R9 IR1 R6 U1 J2 GND R8 R7 C2 Tx GND C1 R45 R49 R46 R47 RESET S1 S2 S3 Figure C-7. Solder Connectors to RCM3700 Prototyping Board RabbitCore RCM3700 User’s Manual 128 C.6 Mounting LCD/Keypad Module on the Prototyping Board Install the LCD/keypad module on header sockets LCD1JA, LCD1JB, and LCD1JC of the RCM3700 Prototyping Board as shown in Figure C-8. Be careful to align the pins over the headers, and do not bend them as you press down to mate the LCD/keypad module with the RCM3700 Prototyping Board. RXC TXC RXE NC PG7_RXE D4 D2 D0 A1 A3 GND LED6 LED4 LED2 LED0 D6 D7 D5 A0 D3 GND D6 D4 D2 D0 A1 A3 LED2 LCD1JC GND D7 D5 D3 D1 A1 A2 GND GND LCD1JC U11 DS2 T1 C12 Y3 C57 R29 R31 C22 CX7 R28 CX8 C35 UX2 R43 00 C34 AIN C32 C33 CX11 AGND 01 03 R35 R36 R41 R42 02 C30 C31 R39 R40 04 R44 THERM_IN R37 AGND VREF R31 R32 R33 R34 C29 AIN R38 06 JP8 J7 THERMISTOR CONVERT 05 R30 R29 DS1 CX9 CX10 DS3 DS2 J8 R48 RCM36/37XX SERIES PROTOTYPING BOARD LCD1JB LED5 C8 CX6 /CS NC NC NC NC NC NC CX5 JP7 LED3 R33 C14 C40 JP6 R27 LED1 C10 L1 JP5 LCD1JB CX4 +BKLT C49 C28 LDE0 CX3 +V VBAT CX2 /RESET PD4 UX1 R26 /RSTET PE1 +5V Q1 R24 +V PE5 RP1 JP4 U8 PC0_TXD GND R7 CX1 +5V PE0 PG6 TXE PD5 +3.3V PC1/PG2 D1 PF6 A2 PF5 PF7 PC3/ PG3 PC2 TXC PE4 LCD1JA LCD1JA GND PF4 BT1 GND PF1 R15 LED5 +5V LED3 /RES /CS PB0 PF0 LED1 PA6 PA7 +BKLT PA5 PB7 GND PA3 DCIN U2 C18 U6 R14 LED6 PA0 C17 U5 LED4 PB2 PA4 PA2 PB3 +3.3V PA7 PA6 PA2 PA0 PF0 PB2 PB4 PB7 C24 L2 R11 C37 2 R32 R30 R27 1 GND TXE GND C8 C10 PA5 PA3 PA1 PF1 PB0 PB3 PB5 PF4 PF6 PE7 PE4 PE0 PC0_TXD PC2_TXC PG6_TXE /IORD J3 +5V PD5 VBAT R28 L6 R15 R16 C36 Y1 C39 R13 C29 C53 R34 C21 L3 PE5 PA4 C20 U5 R5 U4 L4 C16 D1 C54 C55 PC1/ PF7 PG2 PF5 R4 C38 C41 DS1 U6 JP3 PC3/PG3 C17 C7 U7 C15 R6 R23 C24 C25 C27 R25 C31 /IOWR PG7 RXE C20 PE1 C32 C30 PD4 TXD C9 J2 JP1 C19 U1 C25 U3 C33 GND C35 C34 GND C18 JP2 /RES R18 C27 C28 R22 PB5 PB4 L1 C16 /IORD PE7 PA1 C11 R13 TCM_SMT_SOCKET C21 L2 R18 R19 R20 C23 U4 C26 U8 R21 R24 R2 R26 C23 C58 C26 R36 J5 C7 R12 RP2 R11 C22 C6 D2 C13 GND GND /IOWR GND JP2 U3 C3 RXD 485 +485 C5 C4 R5 R16 C19 D1 C12 J1 RP1 Rx JP1 R1 R2 R3 R4 C14 C15 J4 R9 IR1 R6 U1 J2 GND R8 R7 C2 Tx GND C1 R45 R49 R46 R47 RESET S1 S2 S3 Figure C-8. Install LCD/Keypad Module on RCM3700 Prototyping Board CAUTION: Pin PB7 is connected as both switch S2 and as an external I/O bus on the Prototyping Board. Do not use S2 when the LCD/keypad module is installed. RabbitCore RCM3700 User’s Manual 129 C.7 Bezel-Mount Installation This section describes and illustrates how to bezel-mount the LCD/keypad module designed for remote installation. Follow these steps for bezel-mount installation. 1. Cut mounting holes in the mounting panel in accordance with the recommended dimensions in Figure C-9, then use the bezel faceplate to mount the LCD/keypad module onto the panel. 0.125 D, 4x 0.230 (5.8) 2.870 (86.4) 0.130 (3.3) CUTOUT 3.400 (3) (72.9) 3.100 (78.8) Figure C-9. Recommended Cutout Dimensions 2. Carefully “drop in” the LCD/keypad module with the bezel and gasket attached. RabbitCore RCM3700 User’s Manual 130 3. Fasten the unit with the four 4-40 screws and washers included with the LCD/keypad module. If your panel is thick, use a 4-40 screw that is approximately 3/16" (5 mm) longer than the thickness of the panel. Bezel/Gasket DISPLAY BOARD U1 C1 U2 C4 U3 C3 C2 Q1 R17 D1 J1 R1 R2 R4 R3 R5 R7 R6 R8 R15 R14 R13 R12 R11 R9 R10 Panel R18 Q2 Q3 Q4 Q5 Q6 Q8 Q7 C5 R16 KP1 J3 RN1 U4 C6 C7 C8 J2 Figure C-10. LCD/Keypad Module Mounted in Panel (rear view) Carefully tighten the screws until the gasket is compressed and the plastic bezel faceplate is touching the panel. Do not tighten each screw fully before moving on to the next screw. Apply only one or two turns to each screw in sequence until all are tightened manually as far as they can be so that the gasket is compressed and the plastic bezel faceplate is touching the panel. RabbitCore RCM3700 User’s Manual 131 C.7.1 Connect the LCD/Keypad Module to Your Prototyping Board The LCD/keypad module can be located as far as 2 ft. (60 cm) away from the RCM3700 Prototyping Board, and is connected via a ribbon cable as shown in Figure C-11. JP1 R3 U2 C4 U1 R4 R5 C11 C13 CR1 C12 R7 LCD1 Pin 1 C5 D1 C7 C10 C9 R6 D2 C1 C6 C3 R1 C2 R2 U3 U4 Q1 J5 J1 R25 R8 Q4 Q6 3.3 V 2.8 V n.c. = 5 V Q3 R19 2 OTHER LP3500 R12 R9 Q7 Q2 U6 U5 R15 Q5 R18 R10 R20 4 R17 1 R16 R14 J5 3 R21 R13 R23 R11 R22 R26 Q8 J2 U7 C14 C16 R24 C15 KP1 RN1 C17 DISPLAY BOARD J4 S1 S2 S3 RESET RCM36/37XX SERIES PROTOTYPING BOARD R45 R49 R48 R46 J8 VREF AGND THERMISTOR JP8 J7 R29 C29 R30 R39 R40 C30 C31 R47 DS2 DS1 DS3 CX11 R41 R42 C32 C33 R43 AIN R38 06 05 04 03 02 01 00 C34 AIN CONVERT R44 THERM_IN R37 AGND CX10 CX9 UX2 C35 CX8 R35 R36 R31 R32 R33 R34 R28 CX7 R27 CX6 R26 C27 R25 JP5 NC C28 JP6 NC NC JP7 NC NC NC CX5 UX1 R24 U8 U7 JP4 CX1 R23 C24 C25 1 R26 JP2 C27 C28 C26 C58 C23 R28 C21 J3 R34 C16 R27 DS2 R32 R30 DS1 R12 R11 U3 C4 Tx Rx IR1 PC0_TXD PC1/PG2 PF6 PF4 PF1 +5V PF0 /RES PB7 PB0 PA7 PA6 PA1 C6 PA0 PB2 PB3 PB4 PB5 PE7 GND R7 R14 U5 U2 C18 U6 C17 C16 DCIN L1 C13 D2 C12 R9 C2 LCD1JA BT1 R15 /IORD GND /IOWR J4 J2 R8 GND NC C1 PE5 PA3 U4 J1 PE1 PF5 C11 C5 PG7_RXE PA5 GND JP2 485 +485 GND JP1 C7 R13 C9 TXD GND TXE RXD R1 R2 R3 R4 R6 U8 C24 D1 U6 J2 C3 R24 R2 C53 R5 R36 J5 TCM_SMT_SOCKET LCD1JC LCD1JB PD4 PF7 PC3/ PG3 PC2 TXC PE4 C31 C21 L2 R18 R19 R20 C32 C30 R21 C33 R29 +5V C34 VBAT JP3 /IORD PG6_TXE C18 PD5 C57 GND GND L4 PE0 C7 PE4 JP1 PE7 R18 R31 Y3 T1 L6 PC2_TXC C8 C10 PA4 PA2 RP2 U11 L3 PC0_TXD +V /RSTET LED0 LED2 LED4 LED6 GND A3 A1 D0 D2 D4 D6 RP1 C8 C54 C55 U1 C25 U3 C19 R33 L2 PF6 PF4 PB5 PB3 PB0 PF1 PA1 PA3 PA5 PA7 +BKLT /CS LED1 LED3 LED5 GND A2 GND A0 D1 D3 D5 D7 C35 L1 C49 C22 C12 C14 PD4 R7 PE5 PC3/PG3 PB7 PB4 PB2 PF0 PA0 PA2 PA4 PA6 R15 R16 Q1 C26 C10 /RES C36 Y1 C39 R13 C29 /IOWR PG7 RXE C20 PE1 U5 R5 PC1/ PF7 PG2 PF5 R4 C22 CX3 VBAT PE0 PG6 TXE PD5 R22 C40 U4 R6 CX2 2 +5V GND +3.3V Pin 1 C38 C41 R16 CX4 RP1 +V /RESET C23 +BKLT /CS A3 LDE0 A1 LED2 D0 LED1 D2 LED3 A2 LED4 A1 D4 LED5 D1 D6 LED6 D3 GND GND D5 GND D7 GND GND +5V GND +3.3V LCD1JA R11 C37 C20 C17 C15 RXC TXC RXE U1 D1 C15 C14 C19 Figure C-11. Connecting LCD/Keypad Module to RCM3700 Prototyping Board Note the locations and connections relative to pin 1 on both the RCM3700 Prototyping Board and the LCD/keypad module. Rabbit offers 2 ft. (60 cm) extension cables. Contact your authorized distributor or a Rabbit sales representative for more information. RabbitCore RCM3700 User’s Manual 132 C.8 Sample Programs Sample programs illustrating the use of the LCD/keypad module with the RCM3700 Prototyping Board are provided in the SAMPLES\RCM3700\LCD_KEYPAD folder. These sample programs use the external I/O bus on the Rabbit 3000 chip, and so the #define PORTA_AUX_IO line is already included in the sample programs. Each sample program has comments that describe the purpose and function of the program. Follow the instructions at the beginning of the sample program. To run a sample program, open it with the File menu (if it is not still open), then compile and run it by pressing F9. The RCM3700 must be connected to a PC using the programming cable as described in Chapter 2, “Getting Started.”. Complete information on Dynamic C is provided in the Dynamic C User’s Manual. • KEYPADTOLED.C—This program demonstrates the use of the external I/O bus. The program will light up an LED on the LCD/keypad module and will display a message on the LCD when a key press is detected. The DS1 and DS2 LEDs on the RCM3700 Prototyping Board will also light up. • LCDKEYFUN.C—This program demonstrates how to draw primitive features from the graphic library (lines, circles, polygons), and also demonstrates the keypad with the key release option. • SWITCHTOLED.C—This program demonstrates the use of the external I/O bus. The program will light up an LED on the LCD/keypad module and will display a message on the LCD when a switch press is detected. The DS1 and DS2 LEDs on the RCM3700 Prototyping Board will also light up. Additional sample programs are available in the 122x32_1x7 folder in SAMPLES\ LCD_KEYPAD. RabbitCore RCM3700 User’s Manual 133 C.9 LCD/Keypad Module Function Calls When mounted on the RCM3700 Prototyping Board, the LCD/keypad module uses the external I/O bus on the Rabbit 3000 chip. Remember to add the line #define PORTA_AUX_IO to the beginning of any programs using the external I/O bus. C.9.1 LCD/Keypad Module Initialization The function used to initialize the LCD/keypad module can be found in the Dynamic C LIB\DISPLAYS\LCD122KEY7.LIB library. void dispInit(); Initializes the LCD/keypad module. The keypad is set up using keypadDef() or keyConfig() after this function call. RETURN VALUE None. C.9.2 LEDs When power is applied to the LCD/keypad module for the first time, the red LED (DS1) will come on, indicating that power is being applied to the LCD/keypad module. The red LED is turned off when the brdInit function executes. One function is available to control the LEDs, and can be found in the Dynamic C LIB\ DISPLAYS\LCD122KEY7.LIB library. void displedOut(int led, int value); LED on/off control. This function will only work when the LCD/keypad module is installed on the RCM3700 Prototyping Board. PARAMETERS led is the LED to control. 0 = LED DS1 1 = LED DS2 2 = LED DS3 3 = LED DS4 4 = LED DS5 5 = LED DS6 6 = LED DS7 value is the value used to control whether the LED is on or off (0 or 1). 0 = off 1 = on RETURN VALUE None. RabbitCore RCM3700 User’s Manual 134 C.9.3 LCD Display The functions used to control the LCD display are contained in the GRAPHIC.LIB library located in the Dynamic C LIB\DISPLAYS\GRAPHIC library folder. When x and y coordinates on the display screen are specified, x can range from 0 to 121, and y can range from 0 to 31. These numbers represent pixels from the top left corner of the display. void glInit(void); Initializes the display devices, clears the screen. RETURN VALUE None. SEE ALSO glDispOnOFF, glBacklight, glSetContrast, glPlotDot, glBlock, glPlotDot, glPlotPolygon, glPlotCircle, glHScroll, glVScroll, glXFontInit, glPrintf, glPutChar, glSetBrushType, glBuffLock, glBuffUnlock, glPlotLine void glBackLight(int onOff); Turns the display backlight on or off. PARAMETER onOff turns the backlight on or off 1—turn the backlight on 0—turn the backlight off RETURN VALUE None. SEE ALSO glInit, glDispOnoff, glSetContrast void glDispOnOff(int onOff); Sets the LCD screen on or off. Data will not be cleared from the screen. PARAMETER onOff turns the LCD screen on or off 1—turn the LCD screen on 0—turn the LCD screen off RETURN VALUE None. SEE ALSO glInit, glSetContrast, glBackLight RabbitCore RCM3700 User’s Manual 135 void glSetContrast(unsigned level); Sets display contrast. NOTE: This function is not used with the LCD/keypad module since the support circuits are not available on the LCD/keypad module. void glFillScreen(int pattern); Fills the LCD display screen with a pattern. PARAMETER The screen will be set to all black if pattern is 0xFF, all white if pattern is 0x00, and vertical stripes for any other pattern. RETURN VALUE None. SEE ALSO glBlock, glBlankScreen, glPlotPolygon, glPlotCircle void glBlankScreen(void); Blanks the LCD display screen (sets LCD display screen to white). RETURN VALUE None. SEE ALSO glFillScreen, glBlock, glPlotPolygon, glPlotCircle void glFillRegion(int left, int top, int width, int height, char pattern); Fills a rectangular block in the LCD buffer with the pattern specified. Any portion of the block that is outside the LCD display area will be clipped. PARAMETERS left is the x coordinate of the top left corner of the block. top is the y coordinate of the top left corner of the block. width is the width of the block. height is the height of the block. pattern is the bit pattern to display (all black if pattern is 0xFF, all white if pattern is 0x00, and vertical stripes for any other pattern). RETURN VALUE None. SEE ALSO glFillScreen, glBlankScreen, glBlock, glBlankRegion RabbitCore RCM3700 User’s Manual 136 void glFastFillRegion(int left, int top, int width, int height, char pattern); Fills a rectangular block in the LCD buffer with the pattern specified. The block left and width parameters must be byte-aligned. Any portion of the block that is outside the LCD display area will be clipped. PARAMETERS left is the x coordinate of the top left corner of the block. top is the y coordinate of the top left corner of the block. width is the width of the block. height is the height of the block. pattern is the bit pattern to display (all black if pattern is 0xFF, all white if pattern is 0x00, and vertical stripes for any other pattern). RETURN VALUE None. SEE ALSO glFillScreen, glBlankScreen, glBlock, glBlankRegion void glBlankRegion(int left, int top, int width, int height); Clears a region on the LCD display. The block left and width parameters must be byte-aligned. Any portion of the block that is outside the LCD display area will be clipped. PARAMETERS left is the x coordinate of the top left corner of the block (x must be evenly divisible by 8). top is the y coordinate of the top left corner of the block. width is the width of the block (must be evenly divisible by 8). height is the height of the block. RETURN VALUE None. SEE ALSO glFillScreen, glBlankScreen, glBlock RabbitCore RCM3700 User’s Manual 137 void glBlock(int left, int top, int width, int height); Draws a rectangular block in the page buffer and on the LCD if the buffer is unlocked. Any portion of the block that is outside the LCD display area will be clipped. PARAMETERS left is the x coordinate of the top left corner of the block. top is the y coordinate of the top left corner of the block. width is the width of the block. height is the height of the block. RETURN VALUE None. SEE ALSO glFillScreen, glBlankScreen, glPlotPolygon, glPlotCircle void glPlotVPolygon(int n, int *pFirstCoord); Plots the outline of a polygon in the LCD page buffer, and on the LCD if the buffer is unlocked. Any portion of the polygon that is outside the LCD display area will be clipped. If fewer than 3 vertices are specified, the function will return without doing anything. PARAMETERS n is the number of vertices. pFirstCoord is a pointer to array of vertex coordinates: x1,y1, x2,y2, x3,y3, ... RETURN VALUE None. SEE ALSO glPlotPolygon, glFillPolygon, glFillVPolygon RabbitCore RCM3700 User’s Manual 138 void glPlotPolygon(int n, int y1, int x1, int y2, int x2, ...); Plots the outline of a polygon in the LCD page buffer and on the LCD if the buffer is unlocked. Any portion of the polygon that is outside the LCD display area will be clipped. If fewer than 3 vertices are specified, the function will return without doing anything. PARAMETERS n is the number of vertices. y1 is the y coordinate of the first vertex. x1 is the x coordinate of the first vertex. y2 is the y coordinate of the second vertex. x2 is the x coordinate of the second vertex. ... are the coordinates of additional vertices. RETURN VALUE None. SEE ALSO glPlotVPolygon, glFillPolygon, glFillVPolygon void glFillVPolygon(int n, int *pFirstCoord); Fills a polygon in the LCD page buffer and on the LCD screen if the buffer is unlocked. Any portion of the polygon that is outside the LCD display area will be clipped. If fewer than 3 vertices are specified, the function will return without doing anything. PARAMETERS n is the number of vertices. pFirstCoord is a pointer to array of vertex coordinates: x1,y1, x2,y2, x3,y3, ... RETURN VALUE None. SEE ALSO glFillPolygon, glPlotPolygon, glPlotVPolygon RabbitCore RCM3700 User’s Manual 139 void glFillPolygon(int n, int x1, int y1, int x2, int y2, ...); Fills a polygon in the LCD page buffer and on the LCD if the buffer is unlocked. Any portion of the polygon that is outside the LCD display area will be clipped. If fewer than 3 vertices are specified, the function will return without doing anything. PARAMETERS n is the number of vertices. x1 is the x coordinate of the first vertex. y1 is the y coordinate of the first vertex. x2 is the x coordinate of the second vertex. y2 is the y coordinate of the second vertex. ... are the coordinates of additional vertices. RETURN VALUE None. SEE ALSO glFillVPolygon, glPlotPolygon, glPlotVPolygon void glPlotCircle(int xc, int yc, int rad); Draws the outline of a circle in the LCD page buffer and on the LCD if the buffer is unlocked. Any portion of the circle that is outside the LCD display area will be clipped. PARAMETERS xc is the x coordinate of the center of the circle. yc is the y coordinate of the center of the circle. rad is the radius of the center of the circle (in pixels). RETURN VALUE None. SEE ALSO glFillCircle, glPlotPolygon, glFillPolygon void glFillCircle(int xc, int yc, int rad); Draws a filled circle in the LCD page buffer and on the LCD if the buffer is unlocked. Any portion of the circle that is outside the LCD display area will be clipped. PARAMETERS xc is the x coordinate of the center of the circle. yc is the y coordinate of the center of the circle. rad is the radius of the center of the circle (in pixels). RETURN VALUE None. SEE ALSO glPlotCircle, glPlotPolygon, glFillPolygon RabbitCore RCM3700 User’s Manual 140 void glXFontInit(fontInfo *pInfo, char pixWidth, char pixHeight, unsigned startChar, unsigned endChar, unsigned long xmemBuffer); Initializes the font descriptor structure, where the font is stored in xmem. Each font character's bitmap is column major and byte-aligned. PARAMETERS pInfo is a pointer to the font descriptor to be initialized. pixWidth is the width (in pixels) of each font item. pixHeight is the height (in pixels) of each font item. startChar is the value of the first printable character in the font character set. endChar is the value of the last printable character in the font character set. xmemBuffer is the xmem pointer to a linear array of font bitmaps. RETURN VALUE None. SEE ALSO glPrinf unsigned long glFontCharAddr(fontInfo *pInfo, char letter); Returns the xmem address of the character from the specified font set. PARAMETERS *pInfo is the xmem address of the bitmap font set. letter is an ASCII character. RETURN VALUE xmem address of bitmap character font, column major and byte-aligned. SEE ALSO glPutFont, glPrintf RabbitCore RCM3700 User’s Manual 141 void glPutFont(int x, int y, fontInfo *pInfo, char code); Puts an entry from the font table to the page buffer and on the LCD if the buffer is unlocked. Each font character's bitmap is column major and byte-aligned. Any portion of the bitmap character that is outside the LCD display area will be clipped. PARAMETERS x is the x coordinate (column) of the top left corner of the text. y is the y coordinate (row) of the top left corner of the text. pInfo is a pointer to the font descriptor. code is the ASCII character to display. RETURN VALUE None. SEE ALSO glFontCharAddr, glPrintf void glSetPfStep(int stepX, int stepY); Sets the glPrintf() printing step direction. The x and y step directions are independent signed values. The actual step increments depend on the height and width of the font being displayed, which are multiplied by the step values. PARAMETERS stepX is the glPrintf x step value stepY is the glPrintf y step value RETURN VALUE None. SEE ALSO Use glGetPfStep() to examine the current x and y printing step direction. int glGetPfStep(void); Gets the current glPrintf() printing step direction. Each step direction is independent of the other, and is treated as an 8-bit signed value. The actual step increments depends on the height and width of the font being displayed, which are multiplied by the step values. RETURN VALUE The x step is returned in the MSB, and the y step is returned in the LSB of the integer result. SEE ALSO Use glGetPfStep() to control the x and y printing step direction. RabbitCore RCM3700 User’s Manual 142 void glPutChar(char ch, char *ptr, int *cnt, glPutCharInst *pInst) Provides an interface between the STDIO string-handling functions and the graphic library. The STDIO string-formatting function will call this function, one character at a time, until the entire formatted string has been parsed. Any portion of the bitmap character that is outside the LCD display area will be clipped. PARAMETERS ch is the character to be displayed on the LCD. *ptr is not used, but is a place holder for STDIO string functions. *cnt is not used, is a place holder for STDIO string functions. pInst is a pointer to the font descriptor. RETURN VALUE None. SEE ALSO glPrintf, glPutFont, doprnt void glPrintf(int x, int y, fontInfo *pInfo, char *fmt, ...); Prints a formatted string (much like printf) on the LCD screen. Only the character codes that exist in the font set are printed, all others are skipped. For example, '\b', '\t', '\n' and '\r' (ASCII backspace, tab, new line, and carriage return, respectively) will be printed if they exist in the font set, but will not have any effect as control characters. Any portion of the bitmap character that is outside the LCD display area will be clipped. PARAMETERS x is the x coordinate (column) of the upper left corner of the text. y is the y coordinate (row) of the upper left corner of the text. pInfo is a pointer to the font descriptor. *fmt is a formatted string. ... are formatted string conversion parameter(s). EXAMPLE glprintf(0,0, &fi12x16, "Test %d\n", count); RETURN VALUE None. SEE ALSO glXFontInit RabbitCore RCM3700 User’s Manual 143 void glBuffLock(void); Increments LCD screen locking counter. Graphic calls are recorded in the LCD memory buffer and are not transferred to the LCD if the counter is non-zero. NOTE: glBuffLock() and glBuffUnlock() can be nested up to a level of 255, but be sure to balance the calls. It is not a requirement to use these procedures, but a set of glBuffLock() and glBuffUnlock() bracketing a set of related graphic calls speeds up the rendering significantly. RETURN VALUE None. SEE ALSO glBuffUnlock, glSwap void glBuffUnlock(void); Decrements the LCD screen locking counter. The contents of the LCD buffer are transferred to the LCD if the counter goes to zero. RETURN VALUE None. SEE ALSO glBuffLock, glSwap void glSwap(void); Checks the LCD screen locking counter. The contents of the LCD buffer are transferred to the LCD if the counter is zero. RETURN VALUE None. SEE ALSO glBuffUnlock, glBuffLock, _glSwapData (located in the library specifically for the LCD that you are using) void glSetBrushType(int type); Sets the drawing method (or color) of pixels drawn by subsequent graphic calls. PARAMETER type value can be one of the following macros. PIXBLACK draws black pixels (turns pixel on). PIXWHITE draws white pixels (turns pixel off). PIXXOR draws old pixel XOR'ed with the new pixel. RETURN VALUE None. SEE ALSO glGetBrushType RabbitCore RCM3700 User’s Manual 144 int glGetBrushType(void); Gets the current method (or color) of pixels drawn by subsequent graphic calls. RETURN VALUE The current brush type. SEE ALSO glSetBrushType void glXGetBitmap(int x, int y, int bmWidth, int bmHeight, unsigned long xBm); Gets a bitmap from the LCD page buffer and stores it in xmem RAM. This function automatically calls glXGetFastmap if the left edge of the bitmap is byte-aligned and the left edge and width are each evenly divisible by 8. This function call is intended for use only when a graphic engine is used to interface with the LCD/keypad module. PARAMETERS x is the x coordinate in pixels of the top left corner of the bitmap (x must be evenly divisible by 8). y is the y coordinate in pixels of the top left corner of the bitmap. bmWidth is the width in pixels of the bitmap (must be evenly divisible by 8). bmHeight is the height in pixels of the bitmap. xBm is the xmem RAM storage address of the bitmap. RETURN VALUE None. void glXGetFastmap(int left, int top, int width, int height, unsigned long xmemptr); Draws bitmap in the specified space. The data for the bitmap are stored in xmem. This function is similar to glXPutBitmap, except that it's faster. The bitmap must be byte-aligned. Any portion of a bitmap image or character that is outside the LCD display area will be clipped. This function call is intended for use only when a graphic engine is used to interface with the LCD/keypad module. PARAMETERS left is the x coordinate of the top left corner of the bitmap (x must be evenly divisible by 8). top is the y coordinate in pixels of the top left corner of the bitmap. width is the width of the bitmap (must be evenly divisible by 8). height is the height of the bitmap. xmemptr is the xmem RAM storage address of the bitmap. RETURN VALUE None. SEE ALSO glXPutBitmap, glPrintf RabbitCore RCM3700 User’s Manual 145 void glPlotDot(int x, int y); Draws a single pixel in the LCD buffer, and on the LCD if the buffer is unlocked. If the coordinates are outside the LCD display area, the dot will not be plotted. PARAMETERS x is the x coordinate of the dot. y is the y coordinate of the dot. RETURN VALUE None. SEE ALSO glPlotline, glPlotPolygon, glPlotCircle void glPlotLine(int x0, int y0, int x1, int y1); Draws a line in the LCD buffer, and on the LCD if the buffer is unlocked. Any portion of the line that is beyond the LCD display area will be clipped. PARAMETERS x0 is the x coordinate of one endpoint of the line. y0 is the y coordinate of one endpoint of the line. x1 is the x coordinate of the other endpoint of the line. y1 is the y coordinate of the other endpoint of the line. RETURN VALUE None. SEE ALSO glPlotDot, glPlotPolygon, glPlotCircle void glLeft1(int left, int top, int cols, int rows); Scrolls byte-aligned window left one pixel, right column is filled by current pixel type (color). PARAMETERS left is the top left corner of bitmap, must be evenly divisible by 8, otherwise truncates. top is the top left corner of the bitmap. cols is the number of columns in the window, must be evenly divisible by 8, otherwise truncates. rows is the number of rows in the window. RETURN VALUE None. SEE ALSO glHScroll, glRight1 RabbitCore RCM3700 User’s Manual 146 void glRight1(int left, int top, int cols, int rows); Scrolls byte-aligned window right one pixel, left column is filled by current pixel type (color). PARAMETERS left is the top left corner of bitmap, must be evenly divisible by 8, otherwise truncates. top is the top left corner of the bitmap. cols is the number of columns in the window, must be evenly divisible by 8, otherwise truncates. rows is the number of rows in the window. RETURN VALUE None. SEE ALSO glHScroll, glLeft1 void glUp1(int left, int top, int cols, int rows); Scrolls byte-aligned window up one pixel, bottom column is filled by current pixel type (color). PARAMETERS left is the top left corner of bitmap, must be evenly divisible by 8, otherwise truncates. top is the top left corner of the bitmap. cols is the number of columns in the window, must be evenly divisible by 8, otherwise truncates. rows is the number of rows in the window. RETURN VALUE None. SEE ALSO glVScroll, glDown1 void glDown1(int left, int top, int cols, int rows); Scrolls byte-aligned window down one pixel, top column is filled by current pixel type (color). PARAMETERS left is the top left corner of bitmap, must be evenly divisible by 8, otherwise truncates. top is the top left corner of the bitmap. cols is the number of columns in the window, must be evenly divisible by 8, otherwise truncates. rows is the number of rows in the window. RETURN VALUE None. SEE ALSO glVScroll, glUp1 RabbitCore RCM3700 User’s Manual 147 void glHScroll(int left, int top, int cols, int rows, int nPix); Scrolls right or left, within the defined window by x number of pixels. The opposite edge of the scrolled window will be filled in with white pixels. The window must be byte-aligned. Parameters will be verified for the following: 1. The left and cols parameters will be verified that they are evenly divisible by 8. If not, they will be truncated to a value that is a multiple of 8. 2. Parameters will be checked to verify that the scrolling area is valid. The minimum scrolling area is a width of 8 pixels and a height of one row. PARAMETERS left is the top left corner of bitmap, must be evenly divisible by 8. top is the top left corner of the bitmap. cols is the number of columns in the window, must be evenly divisible by 8. rows is the number of rows in the window. nPix is the number of pixels to scroll within the defined window (a negative value will produce a scroll to the left). RETURN VALUE None. SEE ALSO glVScroll RabbitCore RCM3700 User’s Manual 148 void glVScroll(int left, int top, int cols, int rows, int nPix); Scrolls up or down, within the defined window by x number of pixels. The opposite edge of the scrolled window will be filled in with white pixels. The window must be byte-aligned. Parameters will be verified for the following: 1. The left and cols parameters will be verified that they are evenly divisible by 8. If not, they will be truncated to a value that is a multiple of 8. 2. Parameters will be checked to verify that the scrolling area is valid. The minimum scrolling area is a width of 8 pixels and a height of one row. PARAMETERS left is the top left corner of bitmap, must be evenly divisible by 8. top is the top left corner of the bitmap. cols is the number of columns in the window, must be evenly divisible by 8. rows is the number of rows in the window. nPix is the number of pixels to scroll within the defined window (a negative value will produce a scroll up). RETURN VALUE None. SEE ALSO glHScroll void glXPutBitmap(int left, int top, int width, int height, unsigned long bitmap); Draws bitmap in the specified space. The data for the bitmap are stored in xmem. This function calls glXPutFastmap automatically if the bitmap is byte-aligned (the left edge and the width are each evenly divisible by 8). Any portion of a bitmap image or character that is outside the LCD display area will be clipped. PARAMETERS left is the top left corner of the bitmap. top is the top left corner of the bitmap. width is the width of the bitmap. height is the height of the bitmap. bitmap is the address of the bitmap in xmem. RETURN VALUE None. SEE ALSO glXPutFastmap, glPrintf RabbitCore RCM3700 User’s Manual 149 void glXPutFastmap(int left, int top, int width, int height, unsigned long bitmap); Draws bitmap in the specified space. The data for the bitmap are stored in xmem. This function is like glXPutBitmap, except that it is faster. The restriction is that the bitmap must be byte-aligned. Any portion of a bitmap image or character that is outside the LCD display area will be clipped. PARAMETERS left is the top left corner of the bitmap, must be evenly divisible by 8, otherwise truncates. top is the top left corner of the bitmap. width is the width of the bitmap, must be evenly divisible by 8, otherwise truncates. height is the height of the bitmap. bitmap is the address of the bitmap in xmem. RETURN VALUE None. SEE ALSO glXPutBitmap, glPrintf int TextWindowFrame(windowFrame *window, fontInfo *pFont, int x, int y, int winWidth, int winHeight) Defines a text-only display window. This function provides a way to display characters within the text window using only character row and column coordinates. The text window feature provides end-of-line wrapping and clipping after the character in the last column and row is displayed. NOTE: Execute the TextWindowFrame function before other Text... functions. PARAMETERS window is a pointer to the window frame descriptor. pFont is a pointer to the font descriptor. x is the x coordinate of the top left corner of the text window frame. y is the y coordinate of the top left corner of the text window frame. winWidth is the width of the text window frame. winHeight is the height of the text window frame. RETURN VALUE 0—window frame was successfully created. -1—x coordinate + width has exceeded the display boundary. -2—y coordinate + height has exceeded the display boundary. -3—Invalid winHeight and/or winWidth parameter value. RabbitCore RCM3700 User’s Manual 150 void TextBorderInit(windowFrame *wPtr, int border, char *title); This function initializes the window frame structure with the border and title information. NOTE: Execute the TextWindowFrame function before using this function. PARAMETERS wPtr is a pointer to the window frame descriptor. border is the border style: SINGLE_LINE—The function will draw a single-line border around the text window. DOUBLE_LINE—The function will draw a double-line border around the text window. title is a pointer to the title information: If a NULL string is detected, then no title is written to the text menu. If a string is detected, then it will be written center-aligned to the top of the text menu box. RETURN VALUE None. SEE ALSO TextBorder, TextGotoXY, TextPutChar, TextWindowFrame, TextCursorLocation void TextBorder(windowFrame *wPtr); This function displays the border for a given window frame. This function will automatically adjust the text window parameters to accommodate the space taken by the text border. This adjustment will only occur once after the TextBorderInit function executes. NOTE: Execute the TextWindowFrame function before using this function. PARAMETERS wPtr is a pointer to the window frame descriptor. RETURN VALUE None. SEE ALSO TextBorderInit, TextGotoXY, TextPutChar, TextWindowFrame, TextCursorLocation RabbitCore RCM3700 User’s Manual 151 void TextGotoXY(windowFrame *window, int col, int row); Sets the cursor location to display the next character. The display location is based on the height and width of the character to be displayed. NOTE: Execute the TextWindowFrame function before using this function. PARAMETERS window is a pointer to a font descriptor. col is a character column location. row is a character row location. RETURN VALUE None. SEE ALSO TextPutChar, TextPrintf, TextWindowFrame void TextCursorLocation(windowFrame *window, int *col, int *row); Gets the current cursor location that was set by a Graphic Text... function. NOTE: Execute the TextWindowFrame function before using this function. PARAMETERS window is a pointer to a font descriptor. col is a pointer to cursor column variable. row is a pointer to cursor row variable. RETURN VALUE Lower word = Cursor Row location Upper word = Cursor Column location SEE ALSO TextGotoXY, TextPrintf, TextWindowFrame, TextCursorLocation RabbitCore RCM3700 User’s Manual 152 void TextPutChar(struct windowFrame *window, char ch); Displays a character on the display where the cursor is currently pointing. Once a character is displayed, the cursor will be incremented to the next character position. If any portion of a bitmap character is outside the LCD display area, the character will not be displayed. NOTE: Execute the TextWindowFrame function before using this function. PARAMETERS *window is a pointer to a font descriptor. ch is a character to be displayed on the LCD. RETURN VALUE None. SEE ALSO TextGotoXY, TextPrintf, TextWindowFrame, TextCursorLocation void TextPrintf(struct windowFrame *window, char *fmt, ...); Prints a formatted string (much like printf) on the LCD screen. Only printable characters in the font set are printed; escape sequences '\r' and '\n' are also recognized. All other escape sequences will be skipped over; for example, '\b' and \'t' will cause nothing to be displayed. The text window feature provides end-of-line wrapping and clipping after the character in the last column and row is displayed. The cursor then remains at the end of the string. NOTE: Execute the TextWindowFrame function before using this function. PARAMETERS window is a pointer to a font descriptor. *fmt is a formatted string. ... are formatted string conversion parameter(s). EXAMPLE TextPrintf(&TextWindow, "Test %d\n", count); RETURN VALUE None. SEE ALSO TextGotoXY, TextPutChar, TextWindowFrame, TextCursorLocation RabbitCore RCM3700 User’s Manual 153 int TextMaxChars(windowFrame *wPtr); This function returns the maximum number of characters that can be displayed within the text window. NOTE: Execute the TextWindowFrame function before using this function. PARAMETERS wPtr is a pointer to the window frame descriptor. RETURN VALUE The maximum number of characters that can be displayed within the text window. SEE ALSO TextGotoXY, TextPrintf, TextWindowFrame, TextCursorLocation void TextWinClear(windowFrame *wPtr); This functions clears the entire area within the specified text window. NOTE: Execute the TextWindowFrame function before using this function. PARAMETERS wPtr is a pointer to the window frame descriptor. RETURN VALUE None. SEE ALSO TextGotoXY, TextPrintf, TextWindowFrame, TextCursorLocation RabbitCore RCM3700 User’s Manual 154 C.9.4 Keypad The functions used to control the keypad are contained in the Dynamic C LIB\KEYPADS\ KEYPAD7.LIB library. void keyInit(void); Initializes keypad process RETURN VALUE None. SEE ALSO brdInit void keyConfig(char cRaw, char cPress, char cRelease, char cCntHold, char cSpdLo, char cCntLo, char cSpdHi); Assigns each key with key press and release codes, and hold and repeat ticks for auto repeat and debouncing. PARAMETERS cRaw is a raw key code index. 1 × 7 keypad matrix with raw key code index assignments (in brackets): [0] [1] [4] [2] [5] [3] [6] User Keypad Interface cPress is a key press code An 8-bit value is returned when a key is pressed. 0 = Unused. See keypadDef() for default press codes. cRelease is a key release code. An 8-bit value is returned when a key is pressed. 0 = Unused. cCntHold is a hold tick, which is approximately one debounce period or 5 µs. How long to hold before repeating. 0 = No Repeat. cSpdLo is a low-speed repeat tick, which is approximately one debounce period or 5 µs. How many times to repeat. 0 = None. cCntLo is a low-speed hold tick, which is approximately one debounce period or 5 µs. How long to hold before going to high-speed repeat. 0 = Slow Only. RabbitCore RCM3700 User’s Manual 155 cSpdHi is a high-speed repeat tick, which is approximately one debounce period or 5 µs. How many times to repeat after low speed repeat. 0 = None. RETURN VALUE None. SEE ALSO keyProcess, keyGet, keypadDef void keyProcess(void); Scans and processes keypad data for key assignment, debouncing, press and release, and repeat. NOTE: This function is also able to process an 8 × 8 matrix keypad. RETURN VALUE None SEE ALSO keyConfig, keyGet, keypadDef char keyGet(void); Get next keypress. RETURN VALUE The next keypress, or 0 if none SEE ALSO keyConfig, keyProcess, keypadDef int keyUnget(char cKey); Pushes the value of cKey to the top of the input queue, which is 16 bytes deep. PARAMETER cKey RETURN VALUE None. SEE ALSO keyGet RabbitCore RCM3700 User’s Manual 156 void keypadDef(); Configures the physical layout of the keypad with the desired ASCII return key codes. Keypad physical mapping 1 × 7 0 4 1 ['L'] 5 2 ['U'] ['–'] 6 ['D'] 3 ['R'] ['+'] ['E'] where 'D' represents Down Scroll 'U' represents Up Scroll 'R' represents Right Scroll 'L' represents Left Scroll '–' represents Page Down '+' represents Page Up 'E' represents the ENTER key Example: Do the following for the above physical vs. ASCII return key codes. keyConfig keyConfig keyConfig keyConfig keyConfig keyConfig keyConfig ( ( ( ( ( ( ( 3,'R',0, 6,'E',0, 2,'D',0, 4,'-',0, 1,'U',0, 5,'+',0, 0,'L',0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 0 0 0 0 0 0 ); ); ); ); ); ); ); Characters are returned upon keypress with no repeat. RETURN VALUE None. SEE ALSO keyConfig, keyGet, keyProcess void keyScan(char *pcKeys); Writes "1" to each row and reads the value. The position of a keypress is indicated by a zero value in a bit position. PARAMETER pcKeys is a pointer to the address of the value read. RETURN VALUE None. SEE ALSO keyConfig, keyGet, keypadDef, keyProcess RabbitCore RCM3700 User’s Manual 157 APPENDIX D. POWER SUPPLY Appendix D provides information on the current requirements of the RCM3700, and includes some background on the chip select circuit used in power management. D.1 Power Supplies Power is supplied from the motherboard to which the RCM3700 is connected via header J1. The RCM3700 has an onboard +3.3 V linear power regulator that provides the +3.3 V supply to operate the microprocessor-related circuitry of the RCM3700, but not the Ethernet circuit, which requires + 5 V. Figure D-1 shows the power-supply circuit. J1 37 VBAT_EXT POWER IN External Battery LINEAR POWER REGULATOR +5 V +3.3 V 38 39 VIN 3 40 10 µF LM1117 U7 1 2 10 µF Figure D-1. RCM3700 Power Supply The RCM3700 requires a regulated 4.75 V to 5.25 V DC power source. An RCM3700 with no loading at the outputs operating at 22.1 MHz typically draws 100 mA. CAUTION: Be sure that the input to pin 39 on header J1 is connected to a regulated 5 V supply. The regulated 5 V supply is required for the Ethernet circuitry, which is not protected against overvoltage conditions. RabbitCore RCM3700 User’s Manual 158 D.1.1 Battery Backup The RCM3700 does not have a battery, but there is provision for a customer-supplied battery to back up the data SRAM and keep the internal Rabbit 3000 real-time clock running. Header J1, shown in Figure D-1, allows access to the external battery. This header makes it possible to connect an external 3 V power supply. This allows the SRAM and the internal Rabbit 3000 real-time clock to retain data with the RCM3700 powered down. A lithium battery with a nominal voltage of 3 V and a minimum capacity of 165 mA·h is recommended. A lithium battery is strongly recommended because of its nearly constant nominal voltage over most of its life. The drain on the battery by the RCM3700 is typically 6 µA when no other power is supplied. If a 235 mA·h battery is used, the battery can last about 4.5 years: 235 mA·h ------------------------ = 4.5 years. 6 µA The actual battery life in your application will depend on the current drawn by components not on the RCM3700 and the storage capacity of the battery. The RCM3700 does not drain the battery while it is powered up normally. Cycle the main power off/on after you install a backup battery for the first time, and whenever you replace the battery. This step will minimize the current drawn by the real-time clock oscillator circuit from the backup battery should the RCM3700 experience a loss of main power. NOTE: Remember to cycle the main power off/on any time the RCM3700 is removed from the Prototyping Board or motherboard since that is where the backup battery would be located. Rabbit’s Technical Note TN235, External 32.768 kHz Oscillator Circuits, provides additional information about the current draw by the real-time clock oscillator circuit. RabbitCore RCM3700 User’s Manual 159 D.1.2 Battery-Backup Circuit Figure D-2 shows the battery-backup circuit. VOSC VRAM External Battery D1 VBAT-EXT R14 R17 150 kW 100 W R13 47 kW C41 100 nF C39 10 nF Figure D-2. RCM3700 Backup Battery Circuit The battery-backup circuit serves three purposes: • It reduces the battery voltage to the SRAM and to the real-time clock, thereby limiting the current consumed by the real-time clock and lengthening the battery life. • It ensures that current can flow only out of the battery to prevent charging the battery. • A voltage, VOSC, is supplied to U5, which keeps the 32.768 kHz oscillator working when the voltage begins to drop. D.1.3 Reset Generator The RCM3700 uses a reset generator to reset the Rabbit 3000 microprocessor when the voltage drops below the voltage necessary for reliable operation. The reset occurs between 2.85 V and 3.00 V, typically 2.93 V. The RCM3700 has a reset pin, pin 36 on header J1. This pin provides access to the reset output from the reset generator, and is also connected to the reset input of the Rabbit 3000 to allow you to reset the microprocessor externally. A resistor divider consisting of R22 and R23 attenuates the signal associated with an externally applied reset to prevent it from affecting the reset generator. RabbitCore RCM3700 User’s Manual 160 APPENDIX E. SECURE EMBEDDED WEB APPLICATION KIT Appendix E provides information for the Secure Embedded Web Application Kit based on the RCM3700. In addition to an RCM3700 RabbitCore module and Dynamic C 8.51 or a later version, the Secure Embedded Web Application Kit comes with an enhanced software bundle that facilitates the rapid development of secure Web browser interfaces for embedded system control. The enhanced software bundle that is provided in the Secure Embedded Web Application Kit comes on three CD-ROMs. The software modules included in the software bundle require Dynamic C 8.51 or a later version, which is included on a separate CD-ROM in the Secure Embedded Web Application Kit. Software Modules on CD-ROM 1—Dynamic C FAT File System module. The Dynamic C FAT (File Allocation Table) File System module provides a ready-to-run flash-based file system that: • works with a Dynamic C® HTTP or RabbitWeb server to update content reliably • provides reliable storage and transfer of databases and Web pages according to an established, widely used file system • supports a battery-backed wear-reducing cache system that protects the file system during power cycles Software Modules on CD-ROM 2—Dynamic C RabbitWeb module. The Dynamic C RabbitWeb module provides an HTTP/HTML rapid Web development extension for embedded devices, allowing you to: • read and write program variables remotely, eliminating complex CGI programming • easily create controls such as pulldown menus or control buttons • ensure valid input values and proper user authorization • elegantly indicate input errors for easy correction RabbitCore RCM3700 User’s Manual 161 Software Modules on CD-ROM 3—Dynamic C Secure Sockets Layer (SSL) module. This module provides HTTPS security for supported Rabbit-based devices to provide: • fast processing of complex encryption algorithms (up to 120 kbits/s) • support for HTTPS with SSL version 3 and Transport Layer Security (TLS) version 1 • royalty- and license-free with digital certificate creation utility • secure existing Web application in minutes with less than 10 lines of code E.1 Sample Programs Sample programs are included with the bundled Dynamic C modules to illustrate the software features associated with each Dynamic C module. • The SAMPLES\FILESYSTEM folder contains sample programs that demonstrate the use of the Dynamic C FAT file system. • The SAMPLES\TCPIP\RABBITWEB folder contains sample programs that demonstrate the use of the Dynamic C RabbitWeb software. • The SAMPLES\TCPIP\SSL\HTTPS folder contains sample programs that demonstrate the use of the Dynamic C Secure Sockets Layer (SSL) software. E.2 Module Documentation Complete documentation for the Dynamic C modules and their functions is provided as part of the Dynamic C installation. Double-click the documentation icon to reach the menu or, if the icon is missing, use your browser to find and load default.htm in the docs folder, found in the Dynamic C installation folder. RabbitCore RCM3700 User’s Manual 162 INDEX A C E A/D converter calibration ....................... 102 CONVERT pin ............... 101 function calls anaIn .............................. 46 anaInCalib ..................... 48 anaInConfig ................... 42 anaInDiff ....................... 51 anaInDriver ................... 44 anaInEERd .................... 53 anaInEEWr .................... 55 anaInmAmps ................. 52 anaInVolts ..................... 50 digConfig ...................... 56 digIn .............................. 57 digOut ........................... 57 inputs current measurements . 100 differential measurements . 99 negative voltages ........... 99 single-ended measurements 98 additional information online documentation .......... 8 analog inputs See A/D converter application kits Ethernet Connection Kit ..... 8 Secure Embedded Web Application Kit ........................ 8 clock doubler ........................ 36 conformal coating ................. 87 Ethernet cables ...................... 61 Ethernet connections ....... 61, 63 10/100-compatible ............ 63 10Base-T Ethernet card .... 61 additional resources .......... 76 direct connection ............... 63 Ethernet hub ...................... 61 IP addresses ................ 63, 65 MAC addresses ................. 66 steps ............................ 61, 62 Ethernet port ......................... 32 pinout ................................ 32 exclusion zone ...................... 79 external I/O bus .................... 30 software ........................... 134 B battery backup battery life ....................... 159 circuit .............................. 160 board initialization function calls ..................... 41 brdInit ............................ 41 bus loading ............................ 82 D Development Kit ................. 7, 9 AC adapter .......................... 7 DC power supply ................ 7 Getting Started instructions 7 programming cable ............. 7 digital I/O .............................. 26 I/O buffer sourcing and sinking limits ....................... 86 memory interface .............. 30 SMODE0 .......................... 33 SMODE1 .......................... 33 dimensions LCD/keypad module ....... 123 LCD/keypad template ..... 126 RCM3700 .......................... 78 RCM3700 Prototyping Board 94 RCM3720 Prototyping Board 114 Dynamic C .................... 8, 9, 38 add-on modules ......... 8, 9, 60 FAT file system module .... 161 installation ....................... 9 RabbitWeb module ..... 161 Secure Sockets Layer (SSL) module ...................... 162 libraries ............................. 40 Rabbit Embedded Security Pack .......................... 8, 60 sample programs ............... 17 standard features debugging ...................... 39 telephone-based technical support ............................ 8, 60 upgrades and patches ........ 60 F features .................................... 4 RCM3700 Prototyping Board 91, 92 RCM3720 Prototyping Board 112, 113 flash memory addresses user blocks ........................ 37 H hardware connections install RCM3700 on Prototyping Board ...................... 10 power supply ..................... 12 programming cable ........... 11 hardware reset ....................... 12 headers RCM3700 Prototyping Board JP1 ............................... 106 JP2 ............................... 103 RCM3720 Prototyping Board J3 ................................. 120 I I/O address assignments RabbitCore RCM3700 User’s Manual 163 LCD/keypad module ....... 127 I/O buffer sourcing and sinking limits ............................. 86 IP addresses .......................... 65 how to set in sample programs 70 how to set PC IP address ... 71 J jumper configurations ..... 88, 89 JP3 (flash memory size) .... 89 JP4 (flash memory bank select) ......................... 37, 89 jumper locations ................ 88 RCM3700 Prototyping Board 108 JP1 (RS-485 bias and termination resistors) 106, 109 JP2 (RS-232/RS-485 on Serial Port E) ................ 109 JP4 (A/D converter outputs) 109 JP5 (analog inputs reference) ......................... 109 JP6 (analog inputs reference) ......................... 109 JP7 (analog inputs reference) ......................... 109 JP8 (analog voltage/4–20 mA measurement options) 109 RCM3720 Prototyping Board 118 K keypad template .................. 126 removing and inserting label . 126 L LCD/keypad module bezel-mount installation .. 130 dimensions ...................... 123 function calls dispInit ........................ 134 header pinout ................... 127 I/O address assignments .. 127 keypad function calls keyConfig ................ 155 keyGet ..................... 156 keyInit ..................... 155 keypadDef ............... 157 RabbitCore RCM3700 User’s Manual keyProcess ............... 156 keyScan ................... 157 keyUnget ................. 156 keypad template .............. 126 LCD display function calls glBackLight ............. 135 glBlankRegion ......... 137 glBlankScreen ......... 136 glBlock .................... 138 glBuffLock .............. 144 glBuffUnlock ........... 144 glDispOnOff ............ 135 glDown1 .................. 147 glFastFillRegion ...... 137 glFillCircle .............. 140 glFillPolygon ........... 140 glFillRegion ............. 136 glFillScreen ............. 136 glFillVPolygon ........ 139 glFontCharAddr ...... 141 glGetBrushType ...... 145 glGetPfStep ............. 142 glHScroll ................. 148 glInit ........................ 135 glLeft1 ..................... 146 glPlotCircle ............. 140 glPlotDot ................. 146 glPlotLine ................ 146 glPlotPolygon .......... 139 glPlotVPolygon ....... 138 glPrintf ..................... 143 glPutChar ................. 143 glPutFont ................. 142 glRight1 ................... 147 glSetBrushType ....... 144 glSetContrast ........... 136 glSetPfStep .............. 142 glSwap ..................... 144 glUp1 ....................... 147 glVScroll ................. 149 glXFontInit .............. 141 glXGetBitmap ......... 145 glXGetFastmap ....... 145 glXPutBitmap .......... 149 glXPutFastmap ........ 150 TextBorder .............. 151 TextBorderInit ......... 151 TextCursorLocation 152 TextGotoXY ............ 152 TextMaxChars ......... 154 TextPrintf ................ 153 TextPutChar ............ 153 TextWinClear .......... 154 TextWindowFrame . 150 LEDs function calls ............... 134 displedOut ............... 134 mounting instructions ..... 129 reconfigure keypad ......... 126 remote cable connection . 132 removing and inserting keypad label ............................ 126 sample programs ............. 133 specifications .................. 124 versions ........................... 123 voltage settings ............... 125 M MAC addresses ..................... 66 mounting instructions LCD/keypad module ....... 129 P pinout Ethernet port ..................... 32 LCD/keypad module ....... 127 RCM3700 alternate configurations . 28 RCM3700 headers ............ 26 RCM3700 Prototyping Board 96 RCM3720 Prototyping Board 116 power supplies +3.3 V ............................. 158 battery backup ................. 159 linear voltage regulator ... 158 Program Mode ...................... 34 switching modes ............... 34 programming cable PROG connector ............... 34 RCM3700 connections ..... 11 programming port ................. 33 Prototyping Board features .............................. 17 mounting RCM3700 ......... 10 sample programs ............... 17 R Rabbit 3000 data and clock delays ........ 84 spectrum spreader time delays 84 Rabbit subsystems ................ 27 RCM3700 mounting on Prototyping 164 Board ............................ 10 RCM3700 Prototyping Board 91 A/D converter inputs current measurements .... 100 differential measurements ...................... 99 adding components ........... 97 dimensions ........................ 94 expansion area ................... 92 features ........................ 91, 92 jumper configurations .... 108, 109 jumper locations .............. 108 pinout ................................ 96 power supply ..................... 95 prototyping area ................ 97 RS-485 network .............. 105 specifications .................... 95 thermistor input ............... 100 use of parallel ports ......... 110 RCM3720 Prototyping Board ... 112 adding components ......... 118 RS-232 components .... 119 dimensions ...................... 114 expansion area ................. 113 features .................... 112, 113 how to disable demonstration hardware ..................... 117 jumper configurations ..... 118 pinout .............................. 116 power supply ................... 115 prototyping area .............. 118 specifications .................. 115 use of parallel ports ......... 121 reset ....................................... 12 reset generator ................. 160 use of reset pin ................ 160 RS-485 network termination and bias resistors 106 Run Mode ............................. 34 switching modes ............... 34 S sample programs ................... 17 A/D converter AD_CALDIFF_CH.C .. 22, 102 AD_CALMA_CH.C .... 22, 102 AD_CALSE_ALL.C .... 22, RabbitCore RCM3700 User’s Manual 102 AD_CALSE_CH.C ..... 102 AD_CALSE_CHAN.C . 22 AD_RDDIFF_CH.C .... 22, 102 AD_RDMA_CH.C 22, 102 AD_RDSE_ALL.C 22, 102 AD_SAMPLE.C ........... 23 ANAINCONFIG.C ....... 23 DNLOADCALIB.C ...... 24 THERMISTOR.C . 23, 100 UPLOADCALIB.C ....... 24 configuring to run on a Prototyping Board ................. 16 FAT file system FMT_DEVICE.C .......... 75 FAT file system module . 162 getting to know the RCM3700 CONTROLLED.C ........ 18 DIO.C ............................ 17 FLASHLED1.C ............ 17 IR_DEMO.C ................. 18 TOGGLESWITCH.C .... 17 how to run TCP/IP sample programs ................. 69, 70 how to set IP address ........ 70 LCD/keypad module ....... 133 KEYBASIC.C ............. 126 KEYPADTOLED.C .... 133 LCDKEYFUN.C ......... 133 reconfigure keypad ...... 126 SWITCHTOLED.C .... 133 module integration ............ 74 INTEGRATION_FAT_ SETUP.C .................... 75 INTEGRATION.C ........ 75 onboard serial flash SERIAL_FLASHLOG.C .. 19 SFLASH_INSPECT.C .. 19 PONG.C ............................ 13 RabbitWeb module ......... 162 Secure Sockets Layer (SSL) module ........................ 162 serial communication FLOWCONTROL.C ..... 19 PARITY.C .................... 20 SIMPLE3WIRE.C ........ 20 SIMPLE485MASTER.C 21 SIMPLE485SLAVE.C .. 21 SIMPLE5WIRE.C ........ 20 SWITCHCHAR.C ........ 20 TCP/IP BROWSELED.C .......... 72 DISPLAY_MAC.C ....... 66 MBOXDEMO.C ........... 72 PINGLED.C .................. 72 PINGME.C .................... 72 RabbitWeb BLINKLEDS.C ......... 73 DOORMONITOR.C . 73 HANGMAN_GAME.C 73 LEDS_CHECKBOX.C . 73 SPRINKLER.C ......... 73 TEMPERATURE.C .. 73 SMTP.C ........................ 73 SSL SSL_BROWSELED.C .. 74 SSL_MBOXDEMO.C .. 74 serial communication ............ 31 RCM3700 Prototyping Board RS-232 ........................ 104 RS-485 network .......... 105 RS-485 termination and bias resistors .................... 106 RCM3720 Prototyping Board RS-232 ........................ 120 serial ports ............................. 31 Ethernet port ..................... 32 programming port ............. 33 software .................................. 8 external I/O bus ........... 30, 58 I/O drivers ......................... 58 libraries ............................. 40 LCD/keypad module keypad ..................... 155 LCD display ............ 134 PACKET.LIB ................ 59 RCM37xx.LIB .............. 40 RS232.LIB .................... 59 serial flash ..................... 59 TCP/IP ........................... 59 serial communication drivers 59 serial flash drivers ............. 59 TCP/IP drivers .................. 59 specifications ........................ 77 bus loading ........................ 82 digital I/O buffer sourcing and sinking limits ................ 86 dimensions ........................ 78 electrical, mechanical, and environmental ................... 80 exclusion zone .................. 79 165 header footprint ................. 81 headers .............................. 81 LCD/keypad module dimensions .................. 123 electrical ...................... 124 header footprint ........... 124 mechanical .................. 124 relative pin 1 locations 124 temperature .................. 124 Rabbit 3000 DC characteristics ................................. 85 Rabbit 3000 timing diagram . 83 RCM3700 Prototyping Board 95 RCM3720 Prototyping Board 115 relative pin 1 locations ...... 81 spectrum spreader ................. 84 subsystems digital inputs and outputs .. 26 switching modes ................... 34 T TCP/IP primer ....................... 63 technical support ................... 14 troubleshooting changing COM port .......... 13 connections ....................... 13 U USB/serial port converter ..... 11 Dynamic C settings ........... 13 user block function calls readUserBlock ............... 37 writeUserBlock ............. 37 RabbitCore RCM3700 User’s Manual 166 SCHEMATICS 090-0177 RCM3700 Schematic www.rabbit.com/documentation/schemat/090-0177.pdf 090-0180 RCM3600/RCM3700 Prototyping Board Schematic www.rabbit.com/documentation/schemat/090-0180.pdf 090-0199 RCM3720 Prototyping Board Schematic www.rabbit.com/documentation/schemat/090-0199.pdf 090-0156 LCD/Keypad Module Schematic www.rabbit.com/documentation/schemat/090-0156.pdf 090-0128 Programming Cable Schematic www.rabbit.com/documentation/schemat/090-0128.pdf 090-0185 Programming Cable with Adapter Board Schematic www.rabbit.com/documentation/schemat/090-0185.pdf You may use the URL information provided above to access the latest schematics directly. RabbitCore RCM3700 User’s Manual 167
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