#include <termio.h>
/* Convenience macros for the flush cmd argument */
#define FLUSH_IN   0
#define FLUSH_OUT  1
#define FLUSH_BOTH 2
/*
 * Function for flushing a terminal/serial device
 */
tcFlush(int fileDescriptor, int cmd) {
    ioctl(fileDescriptor, TCFLSH, cmd);
}