Issue: After entering data transmission mode via at+set_config=device:uart_mode:1:1 it is not possible to exit
Setup: RAK4200 Evaluation board, RAK Serial Port Tool (windows partition), Custom C++ code (linux)
Details: I have written a C++ program for communicating with a RAK4200EVB using the open(), write() and read() Linux functions plus the termios structure (for handling serial devices).
The program has worked correctly, allowing me to send commands and receive responses, unfortunately, sending at+set_config=device:uart_mode:1:1 has seemingly locked the device in data transmission mode. Sending the “+++” command (without \r or \n) via write() has so far failed to unlock the device, as did any attempts with the RAK serial port tool or gtkterm.
What can i do to resolve this situation?