SIM868 Debug
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?
send PMTK commands
AT+CGNSCMD=0,"$PMTK000*32"
Version
AT+GSV
SIMCOM_Ltd SIMCOM_SIM868 Revision:1418B03SIM868M32_OFO
AT+CGNSVER
AXN_5.0_3333_17022400,0000,B03V02SIM868_11,
check GNSS version
AT+CGNSVER AXN_3.82_3333_16092900,0000,,*2A
AXN_5.0_3333_17022400,0000,B03V02SIM868_11,