Texas Instruments CC1125 Manuel utilisateur

SWRU317A

March 2016

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E2E Forum: www.ti.com/lprf-forum

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CC1125 Development Kit Quick Start Guide

Opening the Box and Running the Packet Error Rate Test

1. Kit Contents

2 x SmartRF Transceiver Evaluation Boards

(TrxEB)

2 x CC1125 ETSI Cat1 868 MHz Boards

(CC1125EM-CAT1-868)

2 x W5017 Pulse Antennas

1 x MSP430 Debug Probe (FET)

2 x Micro USB Cables

1 x Standard USB Cable

1 x 14-pin Flat Cable

Documentation

2. TrxEB Overview

3. Plug the EM into the TrxEB

Insert a CC1125EM board into the TrxEB as

shown above. Connect the antenna to the SMA

connector on the EM.

Caution! The kit contains ESD sensitive

components. Handle with care to

prevent permanent damage.

The RF boards in this kit are tested and comply with

ETSI/R&TTE over temperature from 0 to +35°C. The

W5017 whip antenna from Pulse has a gain of 2 dBi.

The CC1125 is a receiver category 1 device, c.f. ETSI

EN 300 220-1, §4.1.1.

4. Select Board Mode

Use the switches S1 and S2 to select the

operating mode of the board. For the sake of this

quick start guide, please select “Enable” and

“UART”. This configuration will make it possible

to communicate directly with the MSP430 over a

virtual COM port on the PC.

5. Power Options

There are several ways of applying power to the

TrxEB.

2 x 1.5V AA Non-Rechargeable Alkaline

Batteries

USB (5V through USB plug)

External Power Supply (requirements below)

MSP430 Debug Probe

When the power source is batteries or USB, the

voltage regulators on the TrxEB will set the on-

board supply voltage to 3.3VDC.

External Power Supply1Requirements:

Nom Voltage: 3.3VDC

Max Current: 800 mA

Efficiency Level V

Warning! To minimize risk of personal injury or

property damage, never use rechargeable

batteries to power the board.

6. Select Power Source

Depending on the power source, make sure you

connect jumpers to the appropriate pins on the

“Power Source” header. For instance, if you use

batteries, use a jumper to short-circuit pin 1 and

2 on the header. The last jumper in the row (pin

9-10) should always be mounted, unless the

MSP430 FET is used as the power source.

Note that there should only be one active

power source at any one time. Do not leave

the board powered when unattended.

7. Welcome Screen

Turn on power with the Main Power switch. You

should now see the Texas Instruments logo and

a short description of the buttons on the LCD.

Pushing any of the five buttons on the board will

take you to the main menu.

NB! If you don’t see anything on the screen

make sure the mode switches are in the

correct positions (see step 4 above).

8. Packet Error Rate Test

Select the PER (Packet Error Rate) test by

highlighting the selection using the up/down

buttons. Confirm your selection by pressing

Enter (right button).

9. Select Test Mode

The PER test can be run is several modes. Easy

Mode sets up a one-way test and uses default

settings, which is convenient for range testing. To

proceed, highlight “Easy Mode” and press Enter

(right button).

The other test modes are described in the

“TrxEB RF PER Test Software Examples

User’s Guide”.

When using an external power supply, make sure it meets the listed requirements in addition to complying with applicable regional product regulatory and

safety certification requirements such as UL, CSA, VDE, CCC, and PSE.

Connectors

MSP430

Breakout

USB

Breakout

Main

Power

Switch

Power

Selection

Board Mode

Switches

LCD

Buttons

LEDs

MSP430

Debug

Probe

connector

10. Select Frequency

Select which frequency to use for the test. Make

sure that the evaluation modules you have

match the selected frequency.

11. Select Mode

One of the boards must operate as the slave

(transmitter) and the other as master (receiver).

Select Slave on one board…

…and Master on the other board.

12. Establish Link

The slave node will now wait for a configuration

package from the Master. The configuration

contains the parameters used for the PER test.

The configuration package will be sent when you

select “link devices” on the master node.

13. Link Established

When the initial linking has completed, the slave

node will start the test by continuously

transmitting packets to the master.

14. Start the Receiver (master)

On the master node, you can select the number

of packets you want to receive in order to

calculate the packet error.

When selecting “Start PER Test”, the master

(receiver) will begin to count the number of

received packets and provide some statistics.

15. PER Test Results

The master will display a window that plots the

received signal strength (RSSI) for each packet.

Press the “Up” button to go to the detailed

statistical window.

16. PER Test Results

The statistics window will show the error rate

based on the number of lost or erroneous

packets divided by the total number of packets

that should have been received.

17. Troubleshooting

It you are experiencing problems with this test,

please check the following:

Nothing is shown in the display! Make sure

the mode switches are in the correct

positions (see step 4 above).

Please visit the kit web page and check for

updated SW and documentation. Updated

SW can be downloaded to the device using

IAR Embedded Workbench for MSP430 or

SmartRF Flash Programmer.

If you get poor PER results at short

distances, try to move the transmitter and

receiver further apart. The CC1125 receiver

may be saturated if it is too close to the other

CC1125 transmitting at full output power.

18. References

Please visit www.ti.com and

http://www.ti.com/tool/cc1125dk

On the kit product page, you will find additional

documentation, links to updated software

examples and software tools like SmartRF

Studio.

You will also find a lot of information on the TI

E2E forum at http://e2e.ti.com

We hope that you will enjoy working with the

CC1125 device.

SmartRF™Studio

1. Download and Install

Before connecting SmartRF TrxEB to your PC,

download and install SmartRF Studio from

www.ti.com/smartrfstudio.

2. Launch SmartRF Studio

After installing the tool, connect the EB to the PC

using the USB cable and start SmartRF Studio.

Select the “Sub 1 GHz” tab and double click the

highlighted CC1125 device icon.

3. Test the Radio

You can now configure the radio, run

performance tests, export register settings and

run link tests with another CC1125 on a

SmartRF TrxEB connected to the PC.

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