Texas Instruments 2541EM The CC2541EM is a development tool for TI’s 2.4 GHz CC2541 Bluetooth® Low Energy System-on-Chip. User Manual

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SWRU311
December 2011
CC2541 Evaluation Module Kit Quick Start Guide
Opening the Box and Running the Bluetooth® Low Energy SimpleBLE Demo Application
1. Kit Contents
2. Hardware Requirements
3. Hardware Setup
The CC2541EMK is an add-on kit to the
CC2540DK. To run the example described in
this Quick Start Guide, you would need two
SmartRF05 Boards (Rev 1.8.1 or later). These
boards are included in the CC2540DK (and
not in the CC2541EMK).
Connect the antenna to the SMA connector on
the CC2541 evaluation module (CC2541EM).
Tighten the antenna’s screw firmly on to the SMA
connector. If not properly connected, you might
see reduced RF performance.
Next, mount the CC2541EMs
firmly on to connectors P5
and
P6
on
the
SmartRF05EB.



2 x CC2541 Evaluation Modules
2 x Pulse W1010 Antennas
Documentation
The kit is FCC and IC certified and
tested/complies
with
ETSI/R&TTE
over
temperature from 0 to +35°C. The antenna,
W1010 from Pulse, is a ¼ wave dipole antenna
with 2 dBi gain.
More information about the SmartRF05EB can
be found in www.ti.com/lit/swru210.
Caution! The kit contains ESD
sensitive components. Handle with
care to prevent permanent damage.
The CC2541EM boards can also be plugged
into a battery board (see www.ti.com/tool/socbb) for standalone operation.
Caution! To minimize risk of injury, avoid
touching components during operation if
symbolized as hot.
5. Power the
Boards
6. Start-up Screen
4. Power Options
There are several ways of applying power to the
SmartRF05EB.



2 x 1.5 V AA Alkaline 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.
Warning! To minimize risk of personal injury or
property damage, never use rechargeable
batteries to power the board.
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.
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”.
Do not leave
unattended.
EVM
powered
when
One of the CC2541EMs 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:
The “0x…” value displayed on each board is
the device address. Every CC2541 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 a
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 be
pressed in, just like a button. Each movement
performs different actions depending on the state
of the device.
Be careful that you don’t double tap U1 which
would terminate the connection immediately,
giving Disconnected Reason: 22.
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.
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 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 (CC2541EM Master
configuration)
and
SimpleBLEPeripheral
(CC2541 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 BLE Software Developer’s Guide,
which is included with the stack.
You can now perform device discovery and reconnect to the peripheral if desired.
Additional Tools and Links
BLE Packet Sniffer
SmartRF™ Studio
SmartRF Flash Programmer
A CC2540 USB Dongle (not included) 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 CC2541
SmartRF Studio can be
www.ti.com/smartrfstudio
SmartRF
Flash
Programmer
can
be
downloaded
from
www.ti.com/tool/flashprogrammer
The SmartRF Protocol Packet Sniffer software
can
be
downloaded
from
www.ti.com/packetsniffer
downloaded
from
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
CC2541, you should use IAR Embedded
Workbench for 8051.
TI BLE Stack and Software:
www.ti.com/blestack
CC2540/41 Development Kit User Guide:
www.ti.com/lit/pdf/swru301
CC2540 BLE Software Developer’s Guide:
www.ti.com/lit/pdf/swru271
CC2540/41 User’s Guide:
http://www.ti.com/lit/pdf/swru191
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.
CC2541 Product Page:
www.ti.com/cc2541
For additional help, visit the TI E2E Forums:
www.ti.com/lprf-forum
EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS
Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following
conditions:
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user
indemnifies TI from all claims arising from the handling or use of the goods.
Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/ kit may be
returned within 30 days from the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS
THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THE
INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY
INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
Please read the User's Guide and, specifically, the Warnings and Restrictions notice in the User's Guide prior to
handling the product. This notice contains important safety information about temperatures and voltages. For
additional information on TI's environmental and/or safety programs, please visit www.ti.com/esh or contact TI.
No license is granted under any patent right or other intellectual property right of TI covering or relating to any
machine, process, or combination in which such TI products or services might be or are used. TI currently deals
with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI
assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265
Copyright 2011, Texas Instruments Incorporated
REGULATORY COMPLIANCE INFORMATION
As noted in the EVM User’s Guide and/or EVM itself, this EVM and/or accompanying hardware may or may not
be subject to the Federal Communications Commission (FCC) and Industry Canada (IC) rules.
For EVMs not subject to the above rules, this evaluation board/kit/module is intended for use for
ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not
considered by TI to be a finished end product fit for general consumer use. It generates, uses, and can radiate
radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to
part 15 of FCC or ICES-003 rules, which are designed to provide reasonable protection against radio frequency
interference. Operation of the equipment may cause interference with radio communications, in which case the
user at his own expense will be required to take whatever measures may be required to correct this interference.
General Statement for EVMs including a radio
User Power/Frequency Use Obligations: This radio is intended for development/professional use only in legally
allocated frequency and power limits. Any use of radio frequencies and/or power availability of this EVM and its
development application(s) must comply with local laws governing radio spectrum allocation and power limits for
this evaluation module. It is the user’s sole responsibility to only operate this radio in legally acceptable
frequency space and within legally mandated power limitations. Any exceptions to this is strictly prohibited and
unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses
from local regulatory authorities, which is responsibility of user including its acceptable authorization.
For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant
Caution
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
FCC Interference Statement for Class A EVM devices
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at his own expense.
FCC Interference Statement for Class B EVM devices
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following
measures:




Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
For EVMs annotated as IC – INDUSTRY CANADA Compliant
This Class A or B digital apparatus complies with Canadian ICES-003.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
Concerning EVMs including radio transmitters
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device.
Concerning EVMs including detachable antennas
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and
maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio
interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically
radiated power (e.i.r.p.) is not more than that necessary for successful communication.
This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the
user guide with the maximum permissible gain and required antenna impedance for each antenna type
indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that
type, are strictly prohibited for use with this device.
Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada.
Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité
ont pu vider l’autorité de l'utilisateur pour actionner l'équipement.
Concernant les EVMs avec appareils radio
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage
est susceptible d'en compromettre le fonctionnement.
Concernant les EVMs avec antennes détachables
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une
antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le
but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type
d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas
l'intensité nécessaire à l'établissement d'une communication satisfaisante.
Le présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne
énumérés dans le manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque
type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal
indiqué, sont strictement interdits pour l'exploitation de l'émetteur.
Important Notice for Users of this Product in Japan】
This development kit is NOT certified as Confirming to Technical Regulations of
Radio Law of Japan!
If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with
respect to this product:
(1) Use this product in a shielded room or any other test facility as defined in the notification #173
issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of
Article 6 of the Ministry’s Rule for Enforcement of Radio Law of Japan,
(2) Use this product only after you obtained the license of Test Radio Station as provided in Radio Law
of Japan with respect to this product, or
(3) Use of this product only after you obtained the Technical Regulations Conformity Certification as
provided in Radio Law of Japan with respect to this product.
Also, please do not transfer this product, unless you give the same notice above to the transferee.
Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of
Japan.
Texas Instruments Japan Limited
(address) 24-1, Nishi-Shinjuku 6 chome, Shinjukku-ku, Tokyo, Japan
http://www.tij.co.jp
【ご使用にあたっての注意】
本開発キットは技術基準適合証明を受けておりません。
本製品のご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますの
でご注意ください。
（１）電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電
波暗室等の試験設備でご使用いただく。
（２）実験局の免許を取得後ご使用いただく。
（３）技術基準適合証明を取得後ご使用いただく。
なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転でき
ないものとします。
上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。
日本テキサス・インスツルメンツ株式会社
東京都新宿区西新宿６丁目２４番１号
西新宿三井ビル
http://www.tij.co.jp
EVALUATION BOARD/KIT/MODULE (EVM)
WARNINGS, RESTRICTIONS AND DISCLAIMERS
For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated,
this EVM is not a finished electrical equipment and not intended for consumer use. It is intended solely for use
for preliminary feasibility evaluation in laboratory/development environments by technically qualified electronics
experts who are familiar with the dangers and application risks associated with handling electrical mechanical
components, systems and subsystems. It should not be used as all or part of a finished end product.
Your Sole Responsibility and Risk. You acknowledge, represent and agree that:
1. You have unique knowledge concerning Federal, State and local regulatory requirements (including but
not limited to Food and Drug Administration regulations, if applicable) which relate to your products and
which relate to your use (and/or that of your employees, affiliates, contractors or designees) of the EVM for
evaluation, testing and other purposes.
2. You have full and exclusive responsibility to assure the safety and compliance of your products with all
such laws and other applicable regulatory requirements, and also to assure the safety of any activities to
be conducted by you and/or your employees, affiliates, contractors or designees, using the EVM. Further,
you are responsible to assure that any interfaces (electronic and/or mechanical) between the EVM and any
human body are designed with suitable isolation and means to safely limit accessible leakage currents to
minimize the risk of electrical shock hazard.
3. You will employ reasonable safeguards to ensure that your use of the EVM will not result in any property
damage, injury or death, even if the EVM should fail to perform as described or expected.
4. You will take care of proper disposal and recycling of the EVM’s electronic components and packing
materials
Certain Instructions. It is important to operate this EVM within TI’s recommended specifications and
environmental considerations per the user guidelines. Exceeding the specified EVM ratings (including but not
limited to input and output voltage, current, power, and environmental ranges) may cause property damage,
personal injury or death. If there are questions concerning these ratings please contact a TI field representative
prior to connecting interface electronics including input power and intended loads. Any loads applied outside of
the specified output range may result in unintended and/or inaccurate operation and/or possible permanent
damage to the EVM and/or interface electronics. Please consult the EVM User's Guide prior to connecting any
load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field
representative. During normal operation, some circuit components may have case temperatures greater than
60 C as long as the input and output are maintained at a normal ambient operating temperature. These
components include but are not limited to linear regulators, switching transistors, pass transistors, and current
sense resistors which can be identified using the EVM schematic located in the EVM User's Guide. When
placing measurement probes near these devices during normal operation, please be aware that these devices
may be very warm to the touch. As with all electronic evaluation tools, only qualified personnel knowledgeable
in electronic measurement and diagnostics normally found in development environments should use these
EVMs
Agreement to Defend, Indemnify and Hold Harmless. You agree to defend, indemnify and hold TI, its
licensors and their representatives harmless from and against any and all claims, damages, losses, expenses,
costs and liabilities (collectively, "Claims") arising out of or in connection with any use of the EVM that is not in
accordance with the terms of the agreement. This obligation shall apply whether Claims arise under law of tort
or contract or any other legal theory, and even if the EVM fails to perform as described or expected.
Safety-Critical or Life-Critical Applications. If you intend to evaluate the components for possible use in
safety critical applications (such as life support) where a failure of the TI product would reasonably be expected
to cause severe personal injury or death, such as devices which are classified as FDA Class III or similar
classification, then you must specifically notify TI of such intent and enter into a separate Assurance and
Indemnity Agreement.

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