Hi,
I have observed a strange GPS-related behavior on my modem, that could be reproduced after a few modem software resets.
According to the logs, the modem seems to be correctly configured for GPS operation. However, despite this, I am only receiving Galileo frames and not GPS frames.
Configuration
AT+QGPS?
+QGPS: 1
OK
AT+QGPSCFG=“gpsnmeatype”
+QGPSCFG: “gpsnmeatype”,7
OK
AT+QGPSCFG=“gnssconfig”
+QGPSCFG: “gnssconfig”,6
OK
AT+QGPSCFG=“autogps”
+QGPSCFG: “autogps”,1
OK
By default, “glonassnmeatype” is set to 0, but I also tried setting it to 4 in order to receive more frames. However, no additional frames appeared.
It seems that GPS is actually being used even though the NMEA sentences do not arrive, because I only receive the following sentence:
[GAGGA,092755.00,4130.983454,N,00443.017736,W,1,10,0.6,707.4,M,53.8,M,,]
However, if I run the AT+QGPSLOC=2 command, I get 19 satellites instead of 10.
AT+QGPSLOC=2 +QGPSLOC: 092756.00,41.51639,-4.71696,0.6,707.4,1,,0.0,0.0,240326,19
This makes me think that the modem may be reaching an unexpected or inconsistent GNSS state.
Is there a newer firmware version that could fix this issue?
Does anyone have any idea what could be causing this behavior?
Thanks.