I bought an stm32lb072 development board and wanted to learn the sigfox module on this board. I plan to send signals using modulation commands and receive messages on the SDR dongle of sigfox. Now I only get the ID of sigfox module in the development kit and activate it successfully on the official website, but the at command input to send data does not return OK, and LED4 representing sending data on the development board is always on. How can I communicate between the development board and dongle?
