LG290P v04 beta firmware fixes GST issue

Welcome @byronarregui , Did you perform Step #4 within 20 seconds, as per the Guide

Also from the original post:

No, my board isn’t a Poscard, It is just a LGP290P breakout board.

I wonder if you would need an arduino to send the reset command to put it in programming mode? or maybe thats in the quectel app?

upon reading the pdf it does not seem to mention it. Did you select the lg290p in the device setup portion of the app?

If I’m remembering correctly in QGNSS the firmware upgrade mode creates its own window so you should still have access to the QConsole window. Just send the reset command $PQTMSRR*4B when you need to. I think right after you send the new firmware.

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Sorry for that, the issue was caused by using the wrong west longitude to look up the geoid separation table. It will be fixed soon.

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Either send the reset command @jpb mentioned, or short the /RST pin (it is one of the pins next to PPS on that breakout board) momentarily to ground to reset the LG290P without disturbing the USB to serial chip.

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Thanks @Jenn ! :+1:

@rftop - Quectel has given us another beta. This should fix the orthometric height issue. Please give BETA0224 a try.

Is there some sort of secret incantation required in order to enable GST messages? I have successfully flashed BETA0224 to my LG290P, but nothing I am doing will enable GST.

  • Reset configuration: $PQTMRESTOREPAR*13
  • Reboot: $PQTMSRR*4B
  • Drop message rate to 1Hz: $PQTMCFGFIXRATE,W,1000*59 (I’ve found messages go through more reliably if the rate is slowed a bit first, but I have tried with this on 10Hz to the same effect, but I often have to send the configuration string a few times before getting OK back)
  • Save and reboot: $PQTMSAVEPAR*5A & $PQTMSRR*4B
  • Check to see if GST is enabled: $PQTMCFGMSGRATE,R,GST*13 this returns $PQTMCFGMSGRATE,OK,GST,0*59
  • Enable GST on the current port: $PQTMCFGMSGRATE,W,GST,1*0B this returns $PQTMCFGMSGRATE,OK*29
  • Save and reboot again
  • Check to see if GST is enabled again, returns: $PQTMCFGMSGRATE,OK,GST,1*58

But there are no GST messages sent! I feel like I must be missing something here. I’ve also tried $PQTMCFGMSGRATE,W,1,1GST,1* to enable on a specific UART, but I see the same behavior, and I’ve tried UART2 as well.

EDIT: Well, never mind! Apparently the GST messages were being sent, but for some reason neither SW Maps, QGNSS, nor PyGPSClient will decode them! I just had to pay closer attention to all the NMEA strings, and I was missing it. I decoded them by hand and as far as I can tell they are valid. Why can’t anything decode these?

Differential GNSS:
$GNGST,012744.000,1.387,1.323,1.108,55.688,1.259,1.181,2.692*44

RTK Fix:
$GNGST,013223.000,1.264,0.011,0.006,66.981,0.010,0.007,0.024*4F

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I just now had a chance to test BETA 0224, on RTK V2.1 Final.
The Geoid issue is corrected :slight_smile:

Thanks @sparky and @Jenn !

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What command can I use to activate satellite display? I’ve updated to the version you mentioned, and the satellites automatically stop being displayed, but it continues to process NMEA data. On the Unicore UM980 module, the command that activates satellite display is GNGSV 1, but I’d like to know if there’s a similar one, the LG290P. Thanks.

Welcome @RobCosta ,
You are correct, the GSV sentence is what you’re looking for on the LG290P also.

Are you using a PostCard, or a different breakout board ?

On the PostCard, you would serial connect to it and check the NMEA Sentences, below are the defaults I believe :

Menu: Message NMEA
1) Message RMC: 1
2) Message GGA: 1
3) Message GSV: 1
4) Message GSA: 1
5) Message VTG: 1
6) Message GLL: 1

After updating the RTK Everywhere & the LG290P Firmware, this is how I normally setup my PostCards:

Menu: Message NMEA
1) Message RMC: 1
2) Message GGA: 1
3) Message GSV: 1
4) Message GSA: 0
5) Message VTG: 0
6) Message GLL: 0
7) Message GBS: 0 - Requires firmware update
8) Message GNS: 0 - Requires firmware update
9) Message GST: 1 - Requires firmware update
10) Message ZDA: 0 - Requires firmware update
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