Texas Instruments CC253x Quick Start Guide

SWRU
311
December
2011
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CC
2541
Evaluation Module
Kit
Quick Start
Guide
Opening the B
ox an
d R
unning the
Bluetooth
®
Low Energy
SimpleBLE
Demo Application
1. Kit Contents

2 x CC
254
1
Evaluation Mod
u
les

2 x
Pulse
W1010
A
ntennas

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.
Caution!
The
kit c
ontains
ESD
sensitive components. Handle with
care to prevent permanent damage.
2.
Hardware
Re
quirements
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).
More infor
mation about the SmartRF05EB can
be found in
www.ti.com/lit/swru210
.
The CC2541
EM boards can
also
be plugged
into a battery board (see
www.ti.com/tool/soc
-
bb
) for
standalone operation.
3.
Hardware
Setup
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.
N
ext, mount the CC2541EMs
firmly on to connectors P5
and P6 on the
SmartRF05EB.
Caution!
To minimize risk of injury, avoid
touching components during operation if
symbolized as hot.
4.
Power Options
There are several ways of applying power to the
Smar
tRF05EB.

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.
5
.
Power the
B
oards
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 P
11,
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 EVM powered when
unattended.
6
.
Start
-
up Screen
One of the CC2541
EMs
will be pre
-
loaded
with the SimpleBLECentral application, while
the other will be p
re
-
loaded with the
SimpleBLEPeripheral application. The LCD
screens on the two SmartRF05EBs should
display message
s
similar to those below:
The “0x…” value displayed on each board is
the device address. Every
CC25
41
dev
ice
has
a unique address.
7
.
Using the Joystick
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 joys
tick U1 on the top side of
the SmartRF05EB, immediately below the LCD.
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 ac
tions depending on the state
of the device.
8
.
Device Discovery
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 sho
uld display
“Discovering…”.
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.
9
.
Establish Connection
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.
The two LCD screens should appear as in the
images below, with the cen
tral still displaying
the peripheral’s address
and the peripheral
having changed from “Advertising” to
“Connected”:
Be careful that you don’t double tap U1 which
would terminate the connection immediately,
giving
Disconnected Reason: 22
.

Texas Instruments CC253x Specifications

General

Brand	Texas Instruments
Model	CC253x
Category	Microcontrollers
Language	English