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GNSS Compass Reference Manual
Page 47 of 85
Version 1.1
13/01/2021
10.9
System Packets
10.9.1
Acknowledge Packet
Acknowledgement Packet
Packet ID
0
Length
4
Field #
Bytes
Offset
Data
Type
Size
Description
1
0
u8
1
Packet ID being acknowledged
2
1
u16
2
CRC of packet being acknowledged
3
3
u8
1
Acknowledge Result, see section 10.9.1.1
Table 28: Acknowledge packet
10.9.1.1
Acknowledge Result
Value
Description
0
Acknowledge success
1
Acknowledge failure, CRC error
2
Acknowledge failure, packet size incorrect
3
Acknowledge failure, values outside of valid ranges
4
Acknowledge failure, system flash memory failure
5
Acknowledge failure, system not ready
6
Acknowledge failure, unknown packet
Table 29: Acknowledge result
10.9.2
Request Packet
Request Packet
Packet ID
1
Length
1 x number of packets requested
Field #
Bytes
Offset
Data
Type
Size
Description
1
0
u8
1
Packet ID requested
+
Field 1 repeats for additional packet requests
Table 30: Request packet
10.9.3
Boot Mode Packet
Boot Mode Packet