I am using RAK8211 board, which has quectel L70 and quectel bc95-g.
I am using Segger embedded sudio for programming and have defined all the board pins as per the schematic given in this link:
I have modified the nrfSDK example for serial communication in folder “…/example/peripherals/serial” to establish a communication with either of the two modules.
WHen I send an AT command to BC95-G, I always get an ERROR on the UART. No matter the command, i receive only ERROR.
Whereas, when I try to communicate with the L70 GPS module, I get nothing, not even any junk characters.
I have tried variations of pins and other methods to get them to reply and not to show an abnormal behaviour. Also I have provided a proper power supply and even with batteries. I still have dont receive anything in the buffer in case of L70.
Also the sim slot soldered in the board that i have is 8 PINS whereas the documents and schematic shows 6 pins.
Any pointers or help will be greately appreciated.