Atmel REB231ED Manuel utilisateur

Atmel AVR2040: REB231ED Evaluation Kit

Quick Start Guide

Features

This application note briefly describes how to set up and run the pre-flashed

performance test application included with the Atmel®REB231ED evaluation kit.

The Atmel Controller Base Board (CBB) is intended to serve as the microcontroller

platform for the Atmel Radio Extender Board (REB) family. A REB connected to a

CBB forms a battery powered, fully functional and portable wireless node. The

REB231ED evaluation kit was created for evaluating the Atmel AT86RF231 radio

transceiver.

1 Kit contents

2 x Atmel Controller Base Board (CBB)

2 x REB231ED Radio Extender Board (REB)

2 x RS232 level shifter cable

4 x AAA battery

1 x Quick start guide

From left to right: 2 x CBB, 2 x REB, 2 x RS232 cable.

2 Board assembling

1. Check/set power switch off on the two CBBs.

2. Insert two batteries in each CBB.

3. Connect each REB to a CCB to create two REB-CBB assemblies.

8-bit Atmel

Microcontrollers

Application Note

Rev. 8381B-AVR-09/11

Expand1

Connector

2 Atmel AVR2040

8381B-AVR-09/11

OFF

Power switch

Plug each REB vertically into the 2x20 female Expand1 connector header on the

CBB:

•Ensure that the pin 1 marking on the REB header aligns with the corresponding

pin 1 marking on the CCB Expand1 connector header

•The top side of the REB, which has the radio transceiver and antenna, should be

facing towards the batteries on the CBB

3 Simple range measurement

The pre-flashed performance test suite on the REB231ED evaluation kit assemblies

features a simple range measurement application. Each assembly operates in a

standalone manner, and is able to transmit or receive data frames. A successful

transmit or receive operation is indicated by a blinking LED.

3.1 Power up the assemblies

Apply power to both REB-CBB assemblies

by switching on the power switch located on

the top side of the CBB. The assemblies run

a power-on check, and indicate the

successful completion by switching on the

second of the three LEDs, LED-D2.

3.2 Run simple range measurement application

Choose one of the REB-CBB assemblies, and press button T1

to start the simple range measurement application.

First, the REB-CBB initiates a connection and configuration

procedure by sending broadcast frames and waiting for a

response from the second REB-CBB. After a successful

configuration, the REB-CBBs turn on LED-D1 to indicate that

status. Afterwards the initiator starts to transmit data frames immediately. Each data

frame transmission is indicated by blinking the TX status LED-D2. A successful data

frame reception on the second node is indicated by blinking the RX status LED-D3.

The RX status LED stops blinking if no data frames are received, such as when, for

example, the node has left the communication range. Data frame transmission can be

stopped by pressing T1 once more on the node transmitting frames.

Moreover the REB-CBBs can transmit and receive frames simultaneously. Pressing

button T1 on both nodes initiates each node to transmit frames. The three LEDs

indicate their respective functions: LED-D1 a successful configuration, LED-D2

transmission and LED-D3 reception.

NOTE The node configuration gets lost when resetting or switching off the REB-CBB power

supply. To restart the simple range measurement, a reset or power cycle has to be

applied to both REB-CBB assemblies before pressing T1 on one (or both) REB-

CBB(s) to restart the application.

4 Packet error rate measurement

The pre-flashed performance test suite is also configured with packet error rate (PER)

measurement functionality (as defined in IEEE®802.15.4), enabling the user to

explore various radio transceiver features, radio transceiver registers, and

performance by tuning with customized configurations. For this application, one REB-

CBB needs to be connected to a PC.



D3 D2 D1 T1

RX TX configuration

status

Atmel AVR2040

8381B-AVR-09/11

OFF

Power switch

4.1 Board assembling

1. Assemble the boards as described in Chapter 2,

Board assembling.

2. Make sure that the power switch on both assemblies

is in the off position.

3. Plug the yellow D-Sub-9 connector of one RS232

cable into the PC serial COM port. Connect the 6-pin

plug of the RS232 cable onto one of both REB-CBB

assemblies so that the red stripe of the ribbon cable

connects to pin 1 of the CBB header, USARTD0.

4.2 Set up the terminal program on the PC

A terminal program running on the PC is used to control the application running on

the two REB-CBB assemblies. Set up the terminal program as follows:

COM port: COM1 (check for correct assignment)

Baud rate: 9600

Parity: None

Data bits: 8

Stop bits: 1

Flow control: Off

4.3 Power up the assemblies

Apply power to both (optional: one) REB-

CBB assemblies by switching on the power

switch located on the top side of the CBB.

The assemblies run a power-on check, and

indicate the successful completion by

switching on the second of the three LEDs.

4.4 Run the packet error rate measurement

Type any character in the terminal window to

initiate the configuration procedure for both

REB-CBB assembly nodes and show the

menu. Optionally, if no peer node is active, the

search for a peer device can be aborted by

pressing ENTER. The node gets configured for

stand-alone operation. The packet error rate

measurement can be operated through the

menu options displayed on the UART terminal

program. Type the character “S” to run the

application.

A detailed description of the menu options can be found in the Atmel REB231ED

Evaluation Kit User Guide.

5 Applications and documentation

Additional hardware and software documentation related to the REB231ED

evaluation kit can be found on the kit website:

http://www.atmel.com/dyn/products/tools_card.asp?tool_id=4834

8381B-AVR-09/11

Atmel Corporation

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San Jose, CA 95131

USA

Tel: (+1)(408) 441-0311

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www.atmel.com

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Kwun Tong, Kowloon

HONG KONG

Tel: (+852) 2245-6100

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Atmel Munich GmbH

Business Campus

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GERMANY

Tel: (+49) 89-31970-0

Fax: (+49) 89-3194621

Atmel Japan

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JAPAN

Tel: (+81) 3523-3551

Fax: (+81) 3523-7581

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