GNSS position not fixed on BG95

IoT Modules GNSS Module
1

I’m trying to use get position information using GNSS on my BG95-M3 module, however I’m only getting the error 516, which means Not Fixed Now.

I’ll let some AT command outputs here to help you troubleshoot it with me:

AT+QGPS=1
OK
AT+QGPSLOC?
+CME ERROR: 516
AT+QGPSGNMEA="GSV"
OK
AT+QGPSCFG="nmeasrc",1
OK
AT+QGPSGNMEA="GGA"
+QGPSGNMEA: $GPGGA,,,,,,0,,,,,,,,*66
OK
ATI
Quectel
BG95-M3
Revision: BG95M3LAR02A03
AT+QGMR
BG95M3LAR02A03_01.009.01.009
AT+QGPSLOC?
+CME ERROR: 516

I tried also it outside a few minutes, but I’m still getting the same 516 error. Also, I’m using the 03D-S3-00-A GPSGLONASS antenna model.

Finally, I have some questions:
Does this model support GNSS indeed in this firmware version?
This antenna is a active one, should I order a passive one to test it?
Do you have any more AT commands that I can run to help me troubleshoot it?
Am I missing some configuration step?

Thank you!

2

Hi Eduardo,

Can you query satellites in view(GSV message) refering to the steps below? I want to check whether module received satellite signal or not.

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About your question:

  1. Yes. This version BG95M3LAR02A03_01.009.01.009 supports GNSS function;
  2. If you have an active antenna circuit, you can use both active one and passive one. If you have a passive antenna circuit, it only supports passive one.
    3&4. I will send you GNSS Application Note via message.

Best regards.

3

Thank you for replying, Rafael!

So, I tried to run the AT+QGPSGNMEA=“GSV” AT commands, as you suggested, but I only got OK:
AT+QGPSGNMEA=“GSV”
OK

What can we infer from this? I think that the position can take some minutes to be obtained, but the satellite information should be faster, right?

4

I’ve just got my coordinates!!

If you have an active antenna circuit, you can use both active one and passive one. If you have a passive antenna circuit, it only supports passive one.

This comment that you said let me take a look at my click board datasheet, then I realized that I should enable some GPIOs before running the AT commands that I mentioned.

To turn on the DC power to the GNSS antenna, and save it in this state across power
off, issue the following commands to the modem:
AT+QCFG=“gpio”,1,64,1,0,0,1
AT+QCFG=“gpio”,3,64,1,1

So, after doing that, I could get satellites and a GPS location.

Many thanks!