Texas Instruments 2540KEYFOB User Manual

Web sites: www.ti.com/ble
E2E Forum: www.ti.com/ble-forum

Kit Contents

 1 x CC2540 USB dongle
 1 x CC2540 Keyfob board
 1 x Keyfob plastic case
 1 x CC Debugger with cables
 1 x CR2032 Battery
 Documentation

The RF Boards in this kit are FCC and IC certified
and tested to comply with ETSI/R&TTE over
temperature from 0 to +35°C.

Caution! The kit contains ESD sensitive
components. Handle with care to prevent
permanent damage.

Introduction

This document will guide you through the initial
steps required in order to run the pre programmed
Bluetooth® low energy demo application.

You will get familiar with the hardware in the box
and some of the tools that can be used for
developing your own software at a later stage. For
the CC2540DK-MINI, there are two ways of
getting started:

1. Evaluate Using BTool. 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, such as the CC2540 Keyfob.

2. Evaluate Using iPhone 4S/5. Apple
iPhone 4S and 5 both support BT4.0 and
Texas Instruments have created an iOS
Application to evaluate a peripheral
device, such as the CC2540 Keyfob.

Hardware Setup

First, you will need to power up the CC2540
Keyfob. When you insert the CR 2032 battery, the
LED will be lit green for one second.

You can toggle Advertisements on and off by
pushing the right button on the CC2540 Keyfob.
During advertisement, the LED will be blinking
red.

Caution! This kit includes a non-rechargeable

lithium battery. Always make sure the battery is
removed from the CC2540 Keyfob when it is
connected to an external power source (Do not
apply voltage > 3.6V). Dispose the battery
properly and keep out of the reach of children. If
swallowed, contact a physician immediately.

Evaluate Using BTool

1. Download & Install BLE-Stack

The latest BLE software can be downloaded at

www.ti.com/ble-stack.

After the BLE-Stack software installation is
complete, the USB Dongle driver must be
associated with the device in order to use the
BTool application. To associate the USB Dongle
driver, you must first connect the USB Dongle to

the PC’s USB port, or to a USB hub that

connects to the PC
The first time that the dongle is connected to the

PC, a message will pop-up, indicating that
Windows does not recognize the device.

The driver is found in the folder Accessories\
Drivers in the default install directory. For more
information on how to install the driver, please
refer to the CC254XDK-MINI User Guide, found
at...

2. Identify the COM Port Number

Once the driver is installed, you need to determine
which COM port Windows has assigned to the
USB Dongle. Right-click on “Computer”, listed in
the Start Menu, and select “Properties”.

The “System Properties” window should open up,

where you can select “Device Manager”.

A list of all hardware devices should appear.

Under the section “Ports (COM & LPT)”, the

device “TI CC2540 Low-Power RF to USB CDC

Serial Port” should appear. Next to the name

should be the port number (COM#)
Take note of this port number, as it will be needed

in order to use BTool.

3. Start BTool

BTool is included as part of the installation of the
BLE stack and can be found in the folder
\Projects\BTool in the default install directory.

When you start up BTool, you will be prompted to
set port settings. Select the options below and
press “OK”.

4. Connect to CC2540 Keyfob

Pressing the right button on the CC2540 Keyfob
starts the advertisement. The device advertises
for 30 seconds. In BTool, press SCAN button:

After the scanning is complete, choose the device
to connect to and press “Establish”.

5. Button Notifications

To notify when buttons are presses on the
CC2540 Keyfob, notifications need to be
enabled. This is done in the “Read/Write” Tab of
BTool. Simply write 01:00 to character handle
0x0048.

If a button on the CC2540 Keyfob is now
pushed, notifications will be sent and can be
monitored in the BTool log window.

6. Enable Accelerometer

Similar to the button notifications, the
notifications for the accelerometer data can be
enabled. In this example we will only enable
notifications for the x-axis.

First of all, the accelerometer need to be
enabled, which is done by writing 01:00 to
character handle 0x0034 in the “Read/Write” tab
of BTool.

To enable notifications for the x-axis, write 01:00
to character handle 0x003B. This will enable the
CC2540 Keyfob to send notifications as you
move it.

CC2540 Mini Development Kit Quick Start Guide

Opening the Box and Evaluating Bluetooth® Low Energy

SWRU3XX

December 2012

7. Immediate Alert

To sound the buzzer located on the CC2540
Keyfob, write the following value to handle
0x0028:

 01:00 for low Alert
 02:00 for high Alert
 00:00 to turn off.

The buzzer will sound for 10 seconds.

8. Terminate Connection

To terminate the connection you will have three
options:

 Remove the battery from the CC2540

Keyfob, which will trigger a supervision
timeout.

 Move the CC2540 Keyfob out of range

(typically >10m), which will trigger a
supervision timeout.

 Press the “Terminate” button in BTool as

indicated in the image below.

9. Source Code

The project and source code files for the pre
programmed application (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/ble-stack.

The project implementing this demo is called
Keyfobdemo (CC2540 Slave configuration). The
project 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.
For troubleshooting please refer to the

CC254XDK-MINI User Guide, found at...

Evaluate Using iPhone 4S/5

1. Download the Application

The iPhone 4S/5 app can be downloaded via
iTunes (found at www.apple.com/itunes) or App
Store which are pre installed on the iPhone 4S/5.

!! This image will be updated when App released

2. Connect to CC2541 Keyfob

!! This image will be updated when App released

3. Evaluate the Application

TBD

BLE Packet Sniffer

The CC2540 USB Dongle can be used as a BLE
sniffer and monitor packets while the iPhone 4S
Demo is running.

The SmartRF Protocol Packet Sniffer software
can be downloaded at www.ti.com/packetsniffer

SmartRF Flash Programmer

Texas Instruments has a simple tool which can
be used to program and flash the CC2540.

SmartRF Flash Programmer can be downloaded
at www.ti.com/tool/flash-programmer

IAR Embedded Workbench

To develop software, program, and debug the
CC2540, you should use IAR Embedded
Workbench for 8051.

More information on IAR EW8051, including a
free evaluation version download, can be found
at www.iar.com/ew8051.

BLE E2E Forum

For additional help, visit the TI Bluetooth low
energy E2E forum, www.ti.com/ble-forum, for
instant support during your development.

BLE Wiki

Our BLE Wiki contains application examples,
guides and documentation covering those extra
steps you might need help with. The Wiki is not
only managed by Texas Instruments employees
but also E2E community members. Anyone can
share, edit and make use of the information
posted here. The Wiki is found at www.ti.com/ble-

wiki.

Useful Links

TI BLE Stack and Software:

www.ti.com/ble-stack

CC2540/41 Development Kit User Guide:

www.ti.com/lit/pdf/swru ####

CC2540/41 BLE Software Developer’s Guide:

www.ti.com/lit/pdf/swru271

CC2540/41 User’s Guide:

http://www.ti.com/lit/pdf/swru191

CC2541 Product Page:

www.ti.com/cc2541

Beep

Additional Tools and Links