Questions and discussion about the geolocalization features of the TD RF modules.
disk91
 
Posts: 58
Joined: Thu May 07, 2015 4:30 pm

GPS Power mode

by disk91 Sun Jun 28, 2015 8:55 am

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
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lcheminade
 
Posts: 144
Joined: Mon May 11, 2015 7:47 am

Re: GPS Power mode

by lcheminade Mon Jun 29, 2015 7:58 am

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
disk91
 
Posts: 58
Joined: Thu May 07, 2015 4:30 pm

Re: GPS Power mode

by disk91 Tue Jun 30, 2015 7:31 pm

Thank you loic.
Paul
santiagolopez
 
Posts: 8
Joined: Wed Jan 25, 2017 8:58 am

Re: GPS Power mode

by santiagolopez Wed Feb 01, 2017 12:06 pm

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 ?
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