SEGGER_RTT_PutChar() function
SEGGER_RTT_PutChar Function description Stores a single character/byte in SEGGER RTT buffer. Parameters BufferIndex Index of "Up"-buffer to be used (e.g. 0 for "Terminal"). c Byte to be stored. Return value Number of bytes which have been stored in the "Up"-buffer. Notes (1) Data is stored according to buffer flags.