Initialize a Quectel cellular modem’s gpsOneXTRA assistance data feature
Only available on imps with cellular modems
A handler to receive status information
The assistance data
This method is used to ready a Quectel cellular modem’s gpsOneXTRA assistance function, which simplifies the application of GNSS assistance data, for use in future GNSS readings. You will need to call assist.enable() to begin making use of loaded assist data.
When called, this method enables the gpsOneXTRA facility, uploads the supplied assistance data to the modem’s file system, causes the data to be copied into the modem’s GNSS sub-system, and then deletes the uploaded file from the modem’s file system.
The data should be provided as a binary blob and passed into assistData. PLease see your modem’s GNSS documentaion to learn how to acquire this data.
The function supplied as the method’s status callback receives a table which will contain the keys status and restart.
The value of status will be zero if no error occurred, or an error code (see gnss-session for details).
The value of restart is an integer which will be zero unless impOS has to power-cycle the modem in order to enable GNSS.
Note The supplied status callback can only be cancelled by deleting the parent gnss-session object.