Robin,

Am 03.08.2018 um 10:32 schrieb Robin O'Leary:

I'm not sure what happens if the modem GPS is enabled on a vehicle that
can provide its own position information.  Is one preferred over the
other, or do they fight over which one reported most recently?  Either
way, maybe it deserves a mention in the "GPS/GNSS Antenna" section?

There is no priorization on the GPS source other than enabling/disabling the modem GPS.

If a vehicle wants to support both car and modem, it shall check config modem/enable.gps (and modem/enable.gpstime) and suppress the car data while the modem is enabled.

The vehicle can also require and release the modem GPS dynamically by sending the events

vehicle.require.gps
vehicle.require.gpstime
vehicle.release.gps
vehicle.release.gpstime

Regards,
Michael

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