hello
i am trying to work with the serial port but i don't know which of the instruction had echo or not i am programing in C with the libary i am using is stdio.h how can i find out which of them had echo or not ??
output to the serial port : putchar puts printf
(there is echo at all when i sending out to the serial port ?!?!?)
input to the serial port : _getkey getchar gets scanf
thanks in advance mayer