view libserial-newlnx/openport.c @ 302:e05563f0dfcf

doc/Compal-calibration: Rx calchan ranges documented
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 19 Nov 2017 23:10:07 +0000
parents 6984b76f3def
children 9d9c241f2c84
line wrap: on
line source

/*
 * This module implements the basic serial port opening operation.
 */

#include <sys/types.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int target_fd;

open_serial_port(ttyport)
	char *ttyport;
{
	target_fd = open(ttyport, O_RDWR|O_NONBLOCK);
	if (target_fd < 0) {
		perror(ttyport);
		exit(1);
	}
	ioctl(target_fd, TIOCEXCL);
	return 0;
}