6e062d3f60
now again use three messages to transmit stats (much more efficient than sending single values, also more acurate).
318 lines
8.7 KiB
Plaintext
318 lines
8.7 KiB
Plaintext
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General Message Format
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======================
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Currently messages can maximally use 21 bytes for data because:
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- maximum buffer size if 24 bytes
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- a message contains a checksum byte
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 n payload data (depending on command code)
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---------------------------------------------------------
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4+n 1 CRC8 byte
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PING Message
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============
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 1 CRC8 byte
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PONG Message
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============
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 1 CRC8 byte
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RESULT Message
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==============
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 2 ref msg id
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6 1 result code
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---------------------------------------------------------
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7 1 CRC8 byte
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Address Messages
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================
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This includes HAVE_ADDRESS, CLAIM_ADDRESS and DENY_ADDRESS.
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 4 UID of the sending node
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8 1 bus address
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---------------------------------------------------------
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9 1 CRC8 byte
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RANGE Message
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=============
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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2 1 command code
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3 1 source address
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4 1 first available address
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5 1 last available address
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6 1 CRC8 byte
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VALUE Message
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==============
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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2 1 command code (REPORT_VALUE, REQ_SET_VALUE, RSP_SET_VALUE)
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3 1 source address
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4 4 UID of the sending node
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8 2 msg id/ref msg id
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10 1 value id
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11 1 value type
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12 2 value
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14 2 denom
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---------------------------------------------------------
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16 1 CRC8 byte
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DEVICE Message
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==============
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 4 UID of the sending node
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8 4 manufacturer
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12 2 device type
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14 1 device hw version
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15 1 device hw revision
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16 1 firmware variant (depends on hardware type)
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17 1 firmware version: major
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18 1 firmware version: minor
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19 1 firmware version: patchlevel
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---------------------------------------------------------
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20 1 CRC8 byte
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SENDSTATS Message
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=================
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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4 1 Interface number
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5 4 UID of the sending node
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9 2 packets out
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11 2 collisions
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13 2 line busy errors
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---------------------------------------------------------
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14 1 CRC8 byte
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RECVSTATS Message
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=================
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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4 1 Interface number
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5 4 UID of the sending node
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9 2 packets in
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11 2 content errors (invalid msg length, CRC errors)
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13 2 io errors
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15 2 no buffer errors
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17 2 handled packets
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19 2 missed packets
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---------------------------------------------------------
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21 1 CRC8 byte
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FLASHSTART Message
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==================
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 4 UID
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---------------------------------------------------------
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8 1 CRC8 byte
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FLASHREADY Message
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==================
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 4 UID
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8 4 manufacturer
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12 2 device type
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14 1 device hw version
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15 1 device hw revision
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16 1 firmware variant (depends on hardware type)
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17 1 firmware version: major
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18 1 firmware version: minor
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19 1 firmware version: patchlevel
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20 2 page size in bytes
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---------------------------------------------------------
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22 1 CRC8 byte
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FLASHDATA Message
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=================
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 2 address
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6 n data bytes (max 124 bytes)
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---------------------------------------------------------
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6+n 1 CRC8 byte
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FLASHEND Message
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================
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 1 reason (0 if okay, error code to abort)
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---------------------------------------------------------
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5 1 CRC8 byte
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FLASHRESPONSE Message
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=====================
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 1 response code
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---------------------------------------------------------
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5 1 CRC8 byte
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DATA Message
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============
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Offset Length Meaning
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---------------------------------------------------------
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0 1 destination address
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1 1 remaining message length
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---------------------------------------------------------
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2 1 command code
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3 1 source address
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---------------------------------------------------------
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4 4 ROM address
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8 n data bytes
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---------------------------------------------------------
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8+n 1 CRC8 byte
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