EC25: - Do not get GPS position from GNSS module after reboot

IoT Modules GNSS Module
1

Hello team,

I am new to this forum and I need your help,

I have the EC25 module and I want to get the position on the AT port automatically, but when I restart the computer, I don’t get the location again.

To obtain the Position it is only possible using the following EC25 command manually:

AT + QGPS = 1

and I get the following message:

[2021-05-24 17: 07: 23: 296_R:] AT + QGPS = 1
[2021-05-24 17: 07: 23: 296_R:] OK

[2021-05-24 17: 07: 23: 296_R:] + QGPSURC: “xtradataexpire”, 0, “1980/01 / 05,19: 00: 00”
[2021-05-24 17: 07: 34: 802_S:] AT + QGPS = 1
[2021-05-24 17: 07: 34: 858_R:] AT + QGPS = 1
[2021-05-24 17: 07: 34: 858_R:] + CME ERROR: Session is ongoing

[2021-05-24 17: 17: 23: 314_R:] + QGPSURC: “xtradataexpire”, 0, “1980/01 / 05,19: 00: 00”
[2021-05-24 17: 23: 10: 314_S:] AT + QGPS =?
[2021-05-24 17: 23: 10: 379_R:] AT + QGPS =?
[2021-05-24 17: 23: 10: 379_R:] + QGPS: (1-4), (1-255), (1-1000), (0-1000), (1-65535)

[2021-05-24 17: 23: 10: 379_R:] OK

[2021-05-24 17: 27: 23: 322_R:] + QGPSURC: “xtradataexpire”, 0, “1980/01 / 05,19: 00: 00”

and I need to restart or turn off and on the equipment that maintains the EC25 module to continue sending the GPS position.

So what is the problem whereby I lose my position after restarting or shutting down the computer?

please help me to solve this query.

Thanks
Marcelo M.

2

Dear Sir,
To make GPS automatically run after power on, please refer to command AT+QGPSCFG=“autogps” of the attached document.

Any other questions, please let us know.
BRs

Quectel_EC25&EC21_GNSS_AT_Commands_Manual_V1.1.pdf (857.1 KB)

3

hi Berton,

Thank you very much for your answer so far, execute the command AT + QGPS CFG = “auto gps”
and by means of the tests the GPS position has been maintained after turning it on.

My other question is how to specify as precisely as possible the GPS position of the EC25-AU module, I already have this equipment installed
in a (Truck) and it keeps moving and I need to know its location as exact as possible.

Thanks
Marcelo M.

4

Dear Sir,
You can record NMEA messages (including at least RMC, GGA) and then open it with Google Earth. Maybe you need to transform NMEA to KML format first.
Then you can know its trace and compare it with real trace.
BRs