Module header 

SBF block header parsing

Every SBF block starts with an 8-byte header:

[Sync: 2] [CRC: 2] [ID: 2] [Length: 2]

Followed by optional TOW and WNc fields (6 bytes) in most blocks.

Structs

SbfHeader

SBF block header

Constants

MIN_BLOCK_LENGTH

Minimum block length (header only)

SBF_SYNC

SBF sync bytes