SIM868 Debug

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Problem: Can not correctly receive the GNSS output

AT+CGNSINF
+CGNSINF: 0,,,,,,,,,,,,,,,,,,,,
  • This is a problem of the latest simcom firmware, it does not happened in old modules, but in new modules.
  • The GNSS output port baudrate at 9600, but UART2 baudrate is not at 9600 by default, these two should be set to match



Solve:

  • Set the correct baudrate for UART2 before to receive GPS data
  • by commands AT+CGNSIPR=9600


  • We tested all units before send, but the commands data maybe not saved into module, we are still looking for better solutions?