General Message Format ====================== Currently messages can maximally use 22 bytes for data because: - maximum buffer size if 24 bytes - the internal buffer needs an additional flags byte - a message contains a checksum byte Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 n payload data (depending on command code) --------------------------------------------------------- 4+n 1 CRC8 byte PING Message ============ Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address PONG Message ============ Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address Address Messages ================ This includes HAVE_ADDRESS, CLAIM_ADDRESS and DENY_ADDRESS. Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 4 UID of the sending node 8 1 bus address RANGE Message ============= Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 1 first available address 5 1 last available address FLASH_START Message =================== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 2 message number 6 2 address FLASH_ADDR Message ================== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 2 message number 6 2 address FLASH_DATA Message ================== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 2 message number 6 n up to 8 words to write at given address FLASH_END Message ================= Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 2 message number Flash_Response Message ====================== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 2 message number 6 1 response code (0 if okay, error code otherwise) VALUE2 Message ============== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 4 UID of the sending node 8 1 value id 9 1 value type 10 2 value 12 2 denom DEVICE Message ============== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 4 UID of the sending node 8 2 firmware type 10 2 firmware version 12 2 modules mask SENDSTATS Message ================= Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 4 UID of the sending node 8 2 packets out 10 2 collisions 12 2 line busy errors RECVSTATS Message ================= Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 4 UID of the sending node 8 2 packets in 10 2 content errors (invalid msg length, CRC errors) 12 2 io errors 14 2 no buffer errors 16 2 handled packets 18 2 missed packets FLASHSTART Message ================== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 4 UID 8 2 firmware type 10 2 firmware version FLASHREADY Message ================== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 4 UID 8 2 firmware type 10 2 firmware version 12 2 page size in bytes FLASHDATA Message ================= Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 2 address 6 n data bytes (max 124 bytes) FLASHEND Message ================ Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 1 reason (0 if okay, error code to abort) FLASHRESPONSE Message ===================== Offset Length Meaning --------------------------------------------------------- 0 1 destination address 1 1 remaining message length 2 1 command code 3 1 source address --------------------------------------------------------- 4 1 response code