No output of NEMA sentences with PLS8-E | Thales IoT Developer Community
August 15, 2019 - 3:00pm, 1428 views
Hello,
i have an embedded linux device using a PLS8-E ****m for LTE and GPS. LTE works fine, but I cannot seem to get anything out of the GNSS tty.
I have enabled the NEMA output following the description in the AT command reference document (the one for non aided **** for now). I use the service set 2. The current state of the GNSS is as follows:
AT^SGPSC?
^SGPSC: "Engine","1"
^SGPSC: "Info","Urc","off"
^SGPSC: "Nmea/Freq",1
^SGPSC: "Nmea/Glonass","on"
^SGPSC: "Nmea/DeadReckoning","off"
^SGPSC: "Nmea/DRSync","off"
^SGPSC: "Nmea/Output","buffered"
^SGPSC: "Nmea/Urc","off"
^SGPSC: "Power/Antenna","on"
OK
This seems to look fine to me. I tried to get any output on /dev/ttyACM2 using microcom but I got nothing. I have tried various bit rates as I have not found any information on the bit rate that is used for /dev/ttyACM2.
I would appreciate any hints that would allow me to proceed here. Thank you very much.
PS: I was also wondering what the NEMA output would look like if I have no reception. Does it report in intervals that it does not have a fix?
Hello,
I think your issue is related to following parameter:
^SGPSC: "Nmea/Output","buffered"
Please change it to "on".
Regarding your second question, when there is no fix, you will probably get empty (or at least not full depending on how many data GNSS receiver already obtained) NMEA sentences every 1 second, regardless of the frequency you set in parameter "Nmea/Freq".
You can read more about it in AT spec, in the description of AT^SGPSC command.
Best regards,
Adam
Yes. Thats it. Thanks.
I was trying that before but the modem denied the command. Must have had a typo...
No problem. Great that you have it working now!