Hello,
I have a BG95-M3 PCIE module that I am using in a prototype. After about a week I have yet to get the module to show any signs of RF ability. However, I am not a cellular expert, so I hope it is something easy I am doing wrong.
Entering AT+CSQ returns 99,99. I have done everything I can to verify the (very simple) hardware RF chain is not the problem, including swapping out multiple YM0003AA SMA cables and several antennas.
I have outputted the UART logs of all debug info I could think of as valuable between the STM32 MCU and the BG module, which is below:
…Enabling Cell Modem…
CELL RX:
RDY
APP RDY
STM32 TX: ATE0
CELL RX: ATE0
OK
STM32 TX: ATI
CELL RX:
Quectel
BG95-M3
Revision: BG95M3LAR02A03
OK
STM32 TX: AT+CPIN?
CELL RX:
+CPIN: READY
OK
STM32 TX: AT+QCCID
CELL RX:
*+QCCID: ***************9975
OK
STM32 TX: AT+CIMI
CELL RX:
***********2253
OK
STM32 TX: AT+QSCLK?
CELL RX:
+QSCLK: 0
OK
STM32 TX: AT+CFUN?
CELL RX:
+CFUN: 1
OK
STM32 TX: AT+COPS?
CELL RX:
+COPS: 0
OK
STM32 TX: AT+CSQ
CELL RX:
+CSQ: 99,99
OK
STM32 TX: AT+QCFG=“band”
CELL RX:
+QCFG: “band”,0xf,0x100002000000000f0e189f,0x10004200000000090e189f
OK
STM32 TX: AT+CGDCONT?
CELL RX:
+CGDCONT: 1,“IP”,“puffin”,“0.0.0.0”,0,0,0
OK
STM32 TX: AT+CREG?
CELL RX:
+CREG: 0,2
OK
STM32 TX: AT+QPOWD
CELL RX:
OK
…Entering Standby…
Anything stick out? Any other problems you can see? I an in North America, specifically United States. Cell coverage in my area is fairly good. I have verified my APN is correct for the SIM card I am using.
Thanks!