I am using a SIM900 GSM module to connect to my AVR microcontroller.
I tested it with FT232 to see the transmission data.
First Micro sends AT and it will respond OK
AT OK
AT+CMGF=1 OK
AT+C
I am using a SIM900 GSM module to connect to my AVR microcontroller.
I tested it with FT232 to see the transmission data.
First Micro sends AT and it will respond OK
AT OK
AT+CMGF=1 OK
AT+C