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- Arexx Data Logger Protocol
- ~~~~~~~~~~~~~~~~~~~~~~~~~~
- All packets have fixed size of 64 bytes. The first byte is a packet
- type, followed by type-dependent data.
- Timestamps are 32-bit integers representing the number of seconds
- since 2000-01-01 00:00:00 UTC.
- Request packets (from the PC to the logger)
- ~~~~~~~~~~~~~~~
- type 03 Request sensor data
- The data part is probably unused.
- type 04 Set clock
- Data: u32le timestamp
- Reply packets (from the logger to the PC)
- ~~~~~~~~~~~~~
- type 00 Report sensor data
- The data part is a sequence of tuples, each tuple
- starts with its length.
- 9-byte tuples:
- u8 tuple length (0x09)
- u16le sensor ID
- u16be! raw value
- u32le timestamp
- 10-byte tuples contain one extra byte:
- u8 signal quality (units unknown)
- A 0-byte tuple serves as a terminator.
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