Freematics Forum

I have the same issue.. Verify that the frequencies and the cellular protocol of the sim matches the modem. Can you please tell how you send commands to the modem sim800L using the freematics ONE board ? On the freematics lib it looks like it uses SPI but as far as I know it should be RS232 so i'm c...

Hi, I'm using the freematics ONE with SIM800L xBee module and trying to communicate it with no luck. I could not understand what is the hardware interface being used here. As far as I know, the xBee SIM800L interface is RS232 using AT commands but when I was digging in the FreematicsONE.cpp code I f...