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ATASTK512-EK2-AUT

AVR-based Uni-directional Radio Starter Kit Featuring Secure Rolling-Code RF Transmission Encryption User Guide

Atmel Corporation 

Getting Started

2.2

2.2.1

Initial Programming

After setting-up the hardware, insert the accompanying CD into the computer’s CDROM drive.

Note: If you want to use something other than the pre-compiled demonstration software and EEPROM files

included on the CD, there is additional programming information in Section 3, Programming Notes.

1. Apply power to the STK500 by moving the power switch toward the edge of the board.

2. If not already done, install and/or open AVR Studio.

3. When the first box appears entitled, “Welcome to AVR Studio 4,” click “Cancel” (to program the

devices doesn't require that a “Project” be used).

4. Click on the black IC icon with “AVR” -- it is in one of the top rows of the AVR Studio screen.

(Note: When hovering over this symbol with the mouse pointer, “connect to the selected AVR pro-

grammer” appears. This indicates that this is the correct icon).

A pop-up window labeled “STK500” appears.

5. AVR Studio is now ready to program the transmitter(s) and receiver.

Programming the ATmega88 to Control the Receiver

1. Select the “Program” tab and then select ATmega88 from the pull down menu.

2. Select the “Advanced” tab and then select “read signature” to ensure that communication with the

device is functioning properly. If the read attempt is successful, a number will show in the window. If

not, a pop-up will appear describing the failure. Consult the STK500 documentation to handle any

failures.

3. Select the “Fuses” tab and ensure that the Fuses are set as shown in Table 2-1

Table 2-1. Receiver ATmega88 Fuse Settings

Fuse Name

Boot Flash section size = 1024…

Brown-out detection disabled

Int RC Osc 8 MHz: … +64 ms

Divide clock by 8 internally

Watchdog Timer always on

Setting

Checked

Checked

Checked

Not Checked

Not checked

4. From the CD, in the folder “software\IAR\RX\Release\Exe,” program the flash of the ATMega88 with

“RX_fffMHz.a90.” (Note: “fff” is 315, 434, 868 or 915, the frequency specified for this kit).

5. From the CD, in the folder “software\Precompiled,” program the EEPROM of the ATMega88 with

“RX_EEPROM_AES128.hex.”

The ATMega88 is now programmed to control the receiver.

Note:

About receiver programming: the two rows of DIP switches on the interface board provide the capability to

set the OPMODE and LIMIT registers of the receiver IC. These DIP switches are NOT used by this demon-

stration software, as the receiver is programmed by the ATmega88. More can be found about how these

switches work by consulting the appropriate Data Sheets for the receiver ICs used in this kit. To avoid acci-

dental misprogramming of the receiver IC when using this demonstration kit, avoid pushing the white

“CONFIGURE” button when the black slide switch is in the “STK512” position!

2-6

5170C–AVR–10/09

STK512 User Guide

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