Texas Instruments 2540USB The CC2540Dongle is a development tool for the 2.4 GHz CC2540 BLE System-on-Chip with USB from TI. User Manual CC2540 Development Kit Quick Start Guide

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Document ID	1852604
Application ID	ZKmydRZfgZ7h258URBzGhA==
Document Description	user manual1
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Document Type	User Manual
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Date Submitted	2012-12-05 00:00:00
Date Available	2012-12-06 00:00:00
Creation Date	2011-08-17 08:00:05
Producing Software	iText 2.1.7 by 1T3XT
Document Lastmod	2011-08-17 08:00:05
Document Title	CC2540 Development Kit Quick Start Guide
Document Creator	Microsoft Word - CC2540DK_Quick_Start_Guide.doc
Document Author:	Texas Instruments, Incorporated [SWRU300,*]

SWRU300
August 2011
CC2540 Development Kit Quick Start Guide
Opening the Box and Running the Bluetooth® Low Energy SimpleBLE Demo Application
1. Kit Contents
2. Hardware Setup
Connect the antennas to the SMA connector on
the RF evaluation boards. Tighten the antenna’s
screw firmly on to the SMA connector. If not
properly connected, you might see reduced RF
performance. Next, mount the CC2540
evaluation modules (CC2540EMs) on to
connectors P5 and P6 on the SmartRF05EB.
Make sure that the boards are pressed firmly
into the connectors.






2 x SmartRF05EB (the two large boards)
2 x CC2540 Evaluation Modules
2 x Pulse Antennas
1 x CC2540 USB Dongle
Cables
Documentation
3. Power Options
There are several ways of applying power to
the SmartRF05EB.



2 x 1.5 V AA Batteries
USB
External Power Supply
For the batteries and USB, there are voltage
regulators on the SmartRF05EB that will set
the on-board voltage to 3.3 V. The external
power supply should set a voltage that does
not exceed 3.3 V.
Note that there should only be one active
power source at any one time.
Please contact a TI Representative if any parts
are missing from the kit.
4. Set Jumper P11
5. Turn on the Boards
Find jumper P11 on the top side of each
SmartRF05EB. This jumper is used to set the
power source for the board. Set P11 to “1-2” if
you are using battery power. Set P11 to “2-3” if
you are using USB or an external power supply.
6. Start-up Screen
One of the CC2540EMs will be pre-loaded
with the SimpleBLECentral application, while
the other will be pre-loaded with the
SimpleBLEPeripheral application. The LCD
screens on the two SmartRF05EBs should
display messages similar to those below:
Once you have set P11, find switch P8 on the
top side of each SmartRF05EB. To power up
the boards, flip the switch from the “OFF”
position to “ON”
The “0x…” value displayed on each board is
the device address. Every CC2540 device
has a unique address.
7. Using the Joystick
8. Device Discovery
9. Establish Connection
The SimpleBLEPeripheral application runs
autonomously and does not require any user
interaction. The SimpleBLECentral application,
however, requires user interaction by means of
joystick U1. Find joystick U1 on the top side of
the SmartRF05EB, immediately below the LCD.
Before
the
two
devices can connect,
the central device
must first discover the
peripheral device. To
perform
device
discovery, press up on
joystick U1 once. The
LCD on the central
device should display
“Discovering…”.
To
establish
connection with the
peripheral,
press
joystick
U1
in
towards the board
(push it in like it is a
button). Once the
connection
is
established,
the
central device will
automatically perform service discovery on the
peripheral using the BLE GATT protocol. This
should complete within a few seconds.
After a few seconds, it should display “Devices
Found 1 / <- To Select”. This means that the
central device successfully discovered the
peripheral. Press left on joystick U1 to view the
address of the peripheral device. This address
should match the address seen on the
peripheral’s LCD.
The two LCD screens should appear as in the
images below, with the central still displaying
the peripheral’s address and the peripheral
having changed from “Advertising” to
“Connected”:
The joystick has five different movements: it can
be moved up, down, left, right, and it can pressed
in like a button. Each movement performs
different actions depending on the state of the
device.
Web sites:
E2E Forum:
www.ti.com/lprf
www.ti.com/lprf-forum
Make sure to subscribe to the Low-Power RF
Newsletter to receive information about updates to
documentation, new product releases, and more.
Sign up on the TI web pages.
10. Connected Operations
11. Read / Write Data
12. Monitor RSSI
Once the connection has been established and
service discovery is complete, you can perform
the following operations using joystick U1 on the
central device:
Pressing up on U1 will send a read request to the
peripheral device. One byte of data will be read,
and the value will be displayed. Pressing up
again will send a write request, and one byte of
data will be written to the peripheral. The
peripheral’s LCD should display the written value
each time this is done.
Pressing down on U1 will turn on RSSI (received
signal strength indication) monitoring. The RSSI
will be displayed on the LCD in units of negative
dBm.
Bluetooth low energy is an ideal technology for
transmission of small amounts of data between
two devices while consuming very little power, as
is demonstrated here.
If the boards are moved farther apart from each
other, the RSSI will drop (since the value is
negative, a higher number means lower RSSI). If
they are moved closer together, the RSSI should
rise.




Read / Write Data – U1 UP
RSSI Monitoring – U1 DOWN
Connection Parameter Update – U1 RIGHT
Terminate Link – U1 IN (towards the board)
Continuing to press up on the joystick will
alternate between reads and writes, with the
value incrementing each time.
13. Connection Parameter
Update
Pressing right on U1 will send a connection
parameter update request to the peripheral to
use a longer connection interval. This will result
in much longer latency when performing data
reads and writes; however the power consumed
by both devices is significantly reduced.
14. Terminate Link
Pressing U1 in towards the board will terminate
the link. The peripheral will return to an
advertising state. The central device will display
a “Reason” code, which indicates why the
disconnection occurred (values are defined in the
BLE stack API).
In this case, the reason code of 22 indicates that
the link termination was initiated by the central
device. In the event that the peripheral device
goes out of range or has power disconnected
from it, you will see a reason code of 8 which
indicates that a link timeout has occurred.
You can now perform device discovery and reconnect to the peripheral if desired.
Pressing down on U1 again will turn off RSSI
monitoring.
15. SimpleBLE Demo Source
Code
The project and source code files for these
applications (as well as many others) are
included with the CC2540 Bluetooth low energy
(BLE) stack from Texas Instruments, which can
be downloaded at www.ti.com/blestack.
The two projects implementing this demo are
called SimpleBLECentral (CC2540EM Master
configuration)
and
SimpleBLEPeripheral
(CC2540 Slave configuration). These can be
modified as desired, and should provide a good
framework for developing your own custom BLE
applications.
More details on these projects can be found
within the CC2540 BLE Software Developer’s
Guide, which is included with the stack. More
information on the CC2540 Development Kit can
be found in the CC2540DK User’s Guide, which
can
be
downloaded
at
www.ti.com/lit/pdf/swru301.
Additional Tools and Links
BLE Packet Sniffer
SmartRF™ Studio
SmartRF Flash Programmer
The CC2540 USB Dongle included with the
development kit can be used as a BLE sniffer and
monitor packets while the SimpleBLE Demo is
running.
SmartRF Studio allows you to configure the radio,
run RF performance tests, and run link tests
between the two SmartRF05EBs.
Texas Instruments has a simple tool which can
be used to program and flash the CC2540
SmartRF
Flash
Programmer
can
downloaded from
focus.ti.com/docs/toolsw/folders/print/
flash-programmer.html
The SmartRF Protocol Packet Sniffer software
can
be
downloaded
from
www.ti.com/packetsniffer
SmartRF Studio can be
www.ti.com/smartrfstudio
BTool
IAR Embedded Workbench
Useful Links
BTool is a Windows application that allows you to
control a central device using the serial interface
and perform various BLE functions while
connected to a peripheral device.
To develop software, program, and debug the
CC2540, you should use IAR Embedded
Workbench for 8051.
TI BLE Stack and Software:
www.ti.com/blestack
downloaded
from
CC2540 Development Kit User Guide:
www.ti.com/lit/pdf/swru301
CC2540 BLE Software Developer’s Guide:
www.ti.com/lit/pdf/swru271
CC2540 User’s Guide:
http://www.ti.com/lit/pdf/swru191
CC2540 Product Page:
www.ti.com/cc2540
BTool is included as part of the installation of the
BLE stack (see “Useful Links” to the right).
More information on IAR EW8051, including a
free evaluation version download, can be found at
www.iar.com/ew8051.
For additional help, visit the TI E2E Forums:
www.ti.com/lprf-forum
be
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Page Count                      : 3
Modify Date                     : 2011:08:17 08:00:05-05:00
Producer                        : iText 2.1.7 by 1T3XT
Keywords                        : SWRU300
Title                           : CC2540 Development Kit Quick Start Guide
Author                          : Texas Instruments, Incorporated [SWRU300,*]
Create Date                     : 2011:08:17 08:00:05-05:00
Creator                         : Microsoft Word - CC2540DK_Quick_Start_Guide.doc
Subject                         : Quick Start

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