SEGGER_RTT_GetKey() function

SEGGER_RTT_GetKey Function description Reads one character from the SEGGER RTT buffer. Host has previously stored data there. Return value < 0 - No character available (buffer empty). >= 0 - Character which has been read. (Possible values: 0 - 255) Notes (1) This function is only specified for accesses to RTT buffer 0.