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Meaning first byte TD_GEOLOCATION frame

Posted: Mon Jul 25, 2016 12:15 pm
by giovanni
Hello,

What does the first byte of a TD_GEOLOCATION frame actually represent?
I know that the 3rd nibble (0x0) is reserved for future use, and the 0x1010 (nibble4-7) indicates that the GPS frame is encoded according to GPS_DATA_XYZ_SV_HDOP.
I am able to decode the rest of the frame without any problems, only the meaning of the first byte remains unclear to me.

Kind regards.