Datasheet

3
AVR061
2525B–AVR–04/03
Command
Definitions
This section defines the commands that are understood by the STK500 starterkit.
Check if Starterkit
Present
The PC sends this command to check if the starterkit is present on the communication
channel.
Command Cmnd_STK_GET_SIGN_ON, Sync_CRC_EOP
Command Value 0x31
Response Resp_STK_INSYNC, sign_on_message, Resp_STK_OK
or
Resp_STK_NOSYNC (If no Sync_CRC_EOP received)
Get Synchronization Use this command to try to regain synchronization when sync is lost. Send this com-
mand until Resp_STK_INSYNC is received.
Command Cmnd_STK_GET_SYNC, Sync_CRC_EOP
Command Value 0x30
Response Resp_STK_INSYNC, Resp_STK_OK
or
Resp_STK_NOSYNC (If no Sync_CRC_EOP received)
Table 1. Parameters
Parameter Name Field Usage Field Format
sign_on_message Text string. Always “AVR STK” 7 bytes
Table 2. Parameters
Parameter Name Field Usage Field Format
(No parameters) – –