Atmel ATSTK500 500 Starter kit and development system. ATSTK500 ATSTK500 Data Sheet

2525B–AVR–04/03

This section defines the commands that are understood by the STK500 starterkit.

The PC sends this command to check if the starterkit is present on the communication
channel.

Cmnd_STK_GET_SIGN_ON, Sync_CRC_EOP

0x31

Resp_STK_INSYNC, sign_on_message, Resp_STK_OK

or

Resp_STK_NOSYNC (If no Sync_CRC_EOP received)

Use this command to try to regain synchronization when sync is lost. Send this com-
mand until Resp_STK_INSYNC is received.

Cmnd_STK_GET_SYNC, Sync_CRC_EOP

0x30

Resp_STK_INSYNC, Resp_STK_OK 

or

Resp_STK_NOSYNC (If no Sync_CRC_EOP received)

Table 1.  Parameters

sign_on_message

Text string. Always “AVR STK”

7 bytes

Table 2.  Parameters

(No parameters)

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