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===== Quectel LG290P =====



===== Configuration =====
==== Base ====
The LG290P is put into base station mode with a few commands and reboots. The unit can self-survey or known ECEF coordinates can be provided.

^ Command                                                                  ^ Description                                                                                                                                                                                                                                          ^
| ''$PQTMRESTOREPAR*13''                                                   | (Optional) Set unit to defaults                                                                                                                                                                                                                      |
| ''$PQTMSRR*4B''                                                          | Reboot                                                                                                                                                                                                                                               |
| ''$PQTMCFGRCVRMODE,W,2*29''                                              | Enter base station mode                                                                                                                                                                                                                              |
| ''$PQTMSAVEPAR*5A ''                                                     | Save parameters                                                                                                                                                                                                                                      |
| ''$PQTMSRR*4B''                                                          | Reboot                                                                                                                                                                                                                                               |
| ''$PQTMCFGSVIN,W,2,3600,1.2,163333.3333,-4224444.4444,4465555.5555*3F''  | Enter survey-in mode with a known location                                                                                                                                                                                                           |
| ''$PQTMCFGSVIN,W,1,1800,1.0,0,0,0*03''                                   | Enter self survey mode for 3600 seconds with a 3D accuracy limit of 1 meter.                                                                                                                                                                         |
| ''$PQTMCFGMSGRATE,W,PQTMSVINSTATUS,1*45''                                | Enable survey status messages ''PQTMSVINSTATUS,1,#######,2,......'' is reports a good survey.((After a good survey is reported, copy the ECEF coordinates into a ''$PQTMCFGSVIN,W,2,...'' command so they can be saved to persist after a reboot.))  |
| ''$PQTMCFGMSGRATE,W,PQTMSVINSTATUS,0*44''                                | Disable survey status messages                                                                                                                                                                                                                       |
| ''$PQTMCFGRTCM,W,7,0,15,07,06,2,600*03''                                 | Configure RTCM MSM7, set 15° elevation mask, send ephemeris data every 10 minutes.                                                                                                                                                                   |
| ''$PQTMCFGMSGRATE,W,RTCM3-1019,1*54''                                    | Enable GPS ephemerides RTCM messages                                                                                                                                                                                                                 |
| ''$PQTMCFGMSGRATE,W,RTCM3-1020,1*5E''                                    | Enable GLONASS ephemerides RTCM messages                                                                                                                                                                                                             |
| ''$PQTMCFGMSGRATE,W,RTCM3-1042,1*5A''                                    | Enable BeiDou SV ephemeris data (one message per SV)                                                                                                                                                                                                 |
| ''$PQTMCFGMSGRATE,W,RTCM3-1046,1*5E''                                    | Enable Galileo I/NAV SV ephemeris data (one message per SV)                                                                                                                                                                                          |
| ''$PQTMCFGMSGRATE,W,GGA,1*''                                             | (Optional) Enable NMEA GGA messages - useful for timestamping the log                                                                                                                                                                                |
| ''$PQTMCFGMSGRATE,W,ZDA,1*14''                                           | (Optional) Enable NMEA ZDA messages - useful for datestamping the log                                                                                                                                                                                |
| ''$PQTMSAVEPAR*5A ''                                                     | Save parameters                                                                                                                                                                                                                                      |
| ''$PQTMSRR*4B''                                                          | Reboot                                                                                                                                                                                                                                               |

There are a number of different ways to configure the LG290P for base station mode, this is just one I have found to work well for me. Read the base station application note for more detailed information and options.

==== Rover ====
The default configuration of the LG290P is to operate in rover mode. The easiest way to enter this mode is to reset the unit to defaults.

''$PQTMRESTOREPAR*13'' \\ ''$PQTMSRR*4B''

The resulting sentences are sent at 10Hz and are quite dense, a baud rate of 460800 is recommended by Quectel. If 10Hz data is not required (or the bandwidth needed is too great) the fix rate can be slowed to once per second, for example, with ''$PQTMCFGFIXRATE,W,1000*59'' - the number is milliseconds-per-fix. 

==== Misc. Commands/Settings =====
==== Baud Rate ====
It may be necessary to adjust the baud rate for one of the three UART interfaces. This is done with the ''$PQTMCFTUART'' command. 

^ Baud    ^ Command                       ^
| 921600  | ''$PQTMCFGUART,W,921600*13''   |
| 460800  | ''$PQTMCFGUART,W,460800*15''  |
| 115200  | ''$PQTMCFGUART,W,115200*18''  |
| 9600    | ''$PQTMCFGUART,W,9600*10''    |
==== Resources ====
  * [[https://www.nmeachecksum.eqth.net/|NMEA checksum calculator]]
  * [[https://docs.sparkfun.com/SparkFun_LG290P_Quadband_GNSS_RTK_Breakout/introduction/|Sparkfun LG290P Guide]] - Useful for general LG290P specs and setup information.
  * {{ :lg290p:quectel_wireless_solutions_08_13_2024_lg290p-3480024.pdf | LG290P Introduction Brief}}
  * [[https://forums.quectel.com/c/iot-module/gnss-module/37|Quectel GNSS forums]]
  * {{ ::lg290p:quectel_lg290p_03_lg580p_03_gnss_protocol_specification_v1.1.0_preliminary_20241227.pdf |LG290P(03) Protocol Spec v1.1.0 2024-12-27}}
  * {{ :lg290p:quectel_lg290p_03_rtk_application_note_v1.0.pdf | LG290P RTK Application Note v1.0}}
  * {{ :lg290p:quectel_lg290p_03_base_station_mode_application_note_v1.0.pdf |LG290P Base Station Application Note v1.0}}
  * {{ :lg290p:quectel_lg290p_03_firmware_upgrade_guide_v1.0.pdf |LG290P Firmware Upgrade Guide v1.0}}
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