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GPS Power mode

Posted: Sun Jun 28, 2015 8:55 am
by disk91
Hello,

I have some difficulties to find what is corresponding to the different power mode ?
TD_GEOLOC_OFF:
TD_GEOLOC_HW_BCKP:
TD_GEOLOC_SOFT_BCKP:
TD_GEOLOC_POWER_SAVE_MODE:
TD_GEOLOC_NAVIGATION:
TD_GEOLOC_NAVIGATION_COLD_START:
TD_GEOLOC_NAVIGATION_WARM_START:
TD_GEOLOC_NAVIGATION_HOT_START:
TD_GEOLOC_NAVIGATION_IDLE:

In the UBX documentation it seems there is a difference between Acquiring and Tracking where the Tracking mode sound less energy consuming. Am I wrong ? how to access these different mode ?

Thank you for help
Paul

Re: GPS Power mode

Posted: Mon Jun 29, 2015 7:58 am
by lcheminade
Hi Paul,

TD_GEOLOC_OFF: no ram retention, everything is off, no consumption

TD_GEOLOC_HW_BCKP: ram retention, keeps ephemeris and downloaded data, 12µA

TD_GEOLOC_SOFT_BCKP: not implemented yet.

TD_GEOLOC_NAVIGATION: fully on

TD_GEOLOC_POWER_SAVE_MODE: like navigation but the receiver is switched on/off every couple of seconds (configurable) to save power

TD_GEOLOC_NAVIGATION_COLD_START: like navigation but clear all internal data beforehand (ephemeris and time)

TD_GEOLOC_NAVIGATION_WARM_START: like navigation but clear ephemeris data beforehand

TD_GEOLOC_NAVIGATION_HOT_START: like navigation but clear current position beforehand

TD_GEOLOC_NAVIGATION_IDLE: do not use


Acquiring is trying to find GPS signals out of noise. Tracking is when you've got a signal and you're just decoding the data.

Regards.

Loïc

Re: GPS Power mode

Posted: Tue Jun 30, 2015 7:31 pm
by disk91
Thank you loic.
Paul

Re: GPS Power mode

Posted: Wed Feb 01, 2017 12:06 pm
by santiagolopez
Hi, I'm trying to get the GPS data through AT commands, but I don't get nothing, I have been reading about the ephemeris data, How can I download this data to the TD1205p ?