GPS.BIN Notes

GpsPasSion Forums – [TIP] Raw logging on nuvi 2xx/5xx/7xx/1xxx

File format of gps.bin is very simple, no problem with conversion to gpx. It goes like this:

Header 48 bytes:
4B string – text “BEGN”
4B int – GPS week number, starting at 22.8.1999
4B int – second of a week
4B float – heading in radians
8B double – longitude in radians
8B double – latitude in radians
12B ??
4B int – 0 or number of records

record 28 bytes:
4B string – text “$$”
4B int – timestamp in miliseconds
8B double – latitude in radians
8B double – longitude in radians
4B float – heading in radians