Request for LC29H(BA) Firmware (4-Wheel Version)

IoT Modules GNSS Module
1

I recently purchased the LC29H(BA) module, but the pre-installed firmware is configured for 2-wheel.

I require the 4-wheel (car) optimized firmware for my project. I have been unable to locate the specific binary via standard documentation channels.

Please provide the latest version of the 4-wheel firmware for the LC29H(BA) module.

2

Hi @karoora7,

I have sent the FW version to your email. Please do let me know if you have received the FW package. Best regards.

3

Thank you for the update; I have successfully received and installed the firmware file.

I have a follow-up question regarding the BA module’s response rate. I intend to set the output frequency to 10Hz. Although I configured the settings using PQTMCFGFIXRATE and saved them without any errors, the output remains fixed at 1Hz. I also attempted to apply the $PAIR050,100 command, but the result is identical.

Are there any additional constraints or prerequisite procedures I should address first? Specifically, I would like to confirm if this module hardware-critically supports 10Hz, or if I should proceed under the assumption that it is not supported.

I look forward to your technical feedback.

4

Hi @karoora7,

1. Set the Position Fix Interval
Use either the proprietary PQTM or PAIR command to set the desired interval (in milliseconds).

  • Command (PQTM): $PQTMCFGFIXRATE,W,* * Command (PAIR): $PAIR050,* * Parameters: The <Interval> or <Time> is the fix interval in milliseconds (Range: 100–1000 ms).
    • Example for 10 Hz (100 ms interval): $PQTMCFGFIXRATE,W,100*5A or $PAIR050,100*22 .

2. Save the Configuration
For the BA variant, configuration changes related to the fix rate are not applied immediately and must be saved to the NVM to persist.

  • Command: $PQTMSAVEPAR*5A or $PAIR513*3D * Response: The module should return $PQTMSAVEPAR,OK*72 or $PAIR001,513,0*3C to confirm the settings are saved.

3. Restart the Module
The new fix rate configuration only takes effect after a restart .

  • Command: $PQTMSRR*4B (System Reset) or power cycle the module.

Important Considerations for High Fix Rates (> 1 Hz)

  • NMEA Message Restrictions: When the fix rate is set to be greater than 1 Hz (interval < 1000 ms), the module will only output GGA and RMC messages at the high frequency. GSA and GSV messages will maintain a 1 Hz output rate, and other standard NMEA messages will be disabled.
  • Baud Rate Requirement: To avoid data loss at high update rates (like 10 Hz), it is recommended to set the UART baud rate to at least 460800 bps .