mirror of
git://projects.qi-hardware.com/antorcha.git
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74 lines
1.6 KiB
Plaintext
74 lines
1.6 KiB
Plaintext
Protocol
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========
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<Type> <Seq> <MaxSeq>
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0 0 X Ping (no further payload)
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1 0 0 Pong (maybe return version string in the future)
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2 0 0 Reset (64 bytes reset secret)
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4 0 N Unlock secret (64 bytes payload)
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4 1..N-1 N Firmware binary (64 bytes payload)
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4 N N First half of hash
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5 n N Firmware ACK
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6 0..N-1 N+3 Image binary (64 bytes payload)
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6 N N+3 Salt A
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6 N+1 N+3 Salt B
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6 N+2 N+3 Hash A
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6 N+3 N+3 Hash B
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7 n 0 Image ACK
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8 0 4 Parameter block (64 bytes payload)
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8 1 4 Salt A
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8 2 4 Salt B
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8 3 4 Hash A
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8 4 4 Hash B
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9 n 0 Parameter ACK
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10 0 0 Sample (64 bytes payload)
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11 0 0 Sample ACK
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13 n 0 Samples
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Unlock, firmware, image, and parameter packets all have a fixed-size
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64 bytes payload. Pings and acknowledgements have no payload. Pongs
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may have a variable-size payload.
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Even numbered packet types correspond to packets sent from the remote
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controller to the device. Odd numbered packet types correspond to
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responses. The device never initiates communication.
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Image format
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============
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Two bytes per line. LSB of first byte is LED A1, MSB of last byte is B8.
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Unused lines must be set to zero.
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Sample format
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=============
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Each sample packet has the following structure:
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Offset Size
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0 2 Absolute time of X sample, high 16 bits
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2 8*N N samples
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Where each sample is
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Offset Size
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0 2 Absolute time of X sample, lower 16 bits
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2 2 X sample (0-1023)
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4 2 Absolute time of Y sample, lower 16 bits
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6 2 Y sample (0-1023)
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Byte order is little-endian.
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