BG95 GPS not working

IoT Modules LPWA Module
1

I have a custom board, bg95 works fine overall, except for the GPS.

I don’t know if is the firmware, or what I am doing wrong. Even with clearance to the sky, I can’t get proper GPS data.

AT+GMR command reply:
BG95M3LAR02A03

OK

GPS related commands have those replies:
AT+QGPSGNMEA="GGA"\r\r\n+QGPSGNMEA: $GPGGA,0,*66\r\n\r\nOK\r\n
AT+QGPSGNMEA="GSV"\r\r\nOK\r\n\r\n+QGPSLOC: , , , , , , , , , , \r\n
AT+QGPSGNMEA="GSV"\r\r\nOK\r\n\r\n+QGPSLOC: , , , , , , , , , , \r\n

AT+QGPSLOC?\r\r\n+CME ERROR: 516\r\n

how can I fix it? I am in a tight deadline.

2

Hello @felipe

is your custom board using an active or passive GPS antenna design? And are you using the matching GPS antenna? In my general experience active antenna tend to find a lock quicker.

Anyhow, the board I am using has an active GPS antenna design. I simply attached an active antenna, turned GPS on via:

AT+QGPS=1

and since the modem had an active data connection it automatically downloaded the xtra data to help with the GPS lock.

+QGPSURC: "XTRA_DL",0

after that it took about 10 minutes for the board to get a successful GPS lock and valid data.

BTW: my BG95M3 uses the following firmware (retrieved with AT+QGMR):
`BG95M3LAR02A03_01.014.01.014

Thanks
Felix

3

Thanks for the reply Felix.

We are using a passive antenna.

Is it possible that it could be the module firmware? Is it possile to update it?

4

Hello @felipe

unfortunately I don’t know if the issue you are facing is firmware related.

Yes, the firmware can be updated. I suggest you ask in this thread for the latest firmware.

Thanks
Felix

5

Did you check your main antenna and GNSS antenna are installed correctly?

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6

Hello Mikey.

Both are connected.

The GNSS antenna is a Chip antenna.

DO i need to be registered to the network to get a fix?