# Atmel EDBG-based Tools Protocols
TPI Protocol

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## TPI programming protocol responses

Response packets are described after each command.

Table 174. TPI response types

Value | Description
--- | ---
TPI_RSP_ERR_OK | Command executed OK
TPI_RSP_ERR_FAILED | Execution failed
TPI_RSP_ERR_COLLISION | Physical collision detected
TPI_RSP_ERR_TIMEOUT | The command timed out
TPI_RSP_ERR_ILLEGAL_PARAM | Unknown parameter

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