Whenever I send a command to my LG290P, it will send an initial OK type response, but then send a stream of error messages. This is not a big deal for something like $PQTMVERNO as the errors are only sent at a slow rate But setting PQTMMSGRATE,W,PQTMEPE,1,2 results in errors been sent extremely fast, I’m seeing pages of errors between fix messages. I also get the errors after doing a SAVEPAR and a reset or even power cycle. This is giving my raspberry pi a headache trying to filter them out. Valid looking EPE messages are beng sent. Is there any way to disable these error messages? I’ve tried reseting to standard parameters and only enabling EPE, but the errors still flood the interface.
Looks like I’m on the latest firmware?
$PQTMVERNO,LG290P03AANR01A03S,2024/05/22,18:09:06*1C
Hi @Pictsidhe
How did you verify it? Did you use QGNSS tool? Or other serial port tools?
Please provide relevant logs and screenshots.
I use at least two terminals when messing with it. One I send to the LG290P, another I look at what it spitting out via a grep filter, or save to file etc:
sending:
dietpi@FionaPi:~$ cat > /dev/ttyUSB0
$PQTMRESTOREPAR13
$PQTMSRR4B
$PQTMCFGMSGRATE,W,PQTMEPE,1,2*1D
receiving, I’m first checking the restore and reset have taken effect, takes some seconds, then I started a save to a log file before sending the CFGMSGRATE command above. In normal use I grep and sed the stream into a log file. Eventually it will get more complex with some additional realtime processing of fixes, but my first stage filtering is missing fixes if EPE is running. I believe the flood of EPE errors is too much for my raspberry to handle. I have yet to get an RTK fix, only occasional float, though I’m still using a cheap 3 band antenna.
dietpi@FionaPi:~$ cat /dev/ttyUSB0 | grep -e ‘^$PQTM’
^C
dietpi@FionaPi:~$ cat /dev/ttyUSB0 | grep -e ‘^$PQTM’ -e ‘^$GNRMC’> pqtm.log
^C
I added a GNRMC filter to act as a timestamp and trimmed the log file to put the CFGMSGRATE near the top. The CFGMSGRATE errors do subside, but the PQTMEPE errors persist even after a SAVEPAR and power cycle.
pqtmb.txt (8.5 KB)
Hi @Pictsidhe
I have sent you the relevant information via email, please check.
I upgraded the firmware using QGNSS2. The module no longer picks up any satellites. I tried it upgrading again, still no satellites. Both times QGNSS ran through to ‘success’ I left it a while afterwards before trying a power cycle.
Hi @Pictsidhe
In what environment did you conduct the test? Please confirm whether the connection of your LG290P antenna is stable. Then, could you please take a photo of the output of your module and pictures of the entire module and the antenna?