Clearing the serial port's buffer

Question

This is what my function looks like to open the serial port (using Ubuntu 12.04):

int open_port(void)
{
  int fd; /* File descriptor for the port */

  fd =          


        

Answer 1

I think I figured it out. For some reason, I need to add a delay before flushing. These two lines added before returning fd seem to have done the trick:

  sleep(2); //required to make flush work, for some reason
  tcflush(fd,TCIOFLUSH);