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/*
* ppsldics.c -- setup PPS line discipline for RS232
*
* Copyright (C) 2005-2007 Rodolfo Giometti <giometti@linux.it>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <linux/tty.h>
void usage(char *name)
{
fprintf(stderr, "usage: %s <ttyS>\n", name);
exit(EXIT_FAILURE);
}
int main(int argc, char *argv[])
{
int fd;
int ldisc = N_PPS;
int ret;
if (argc < 2)
usage(argv[0]);
fd = open(argv[1], O_RDWR);
if (fd < 0) {
perror("open");
exit(EXIT_FAILURE);
}
ret = ioctl(fd, TIOCSETD, &ldisc);
if (ret < 0) {
perror("ioctl(TIOCSETD)");
exit(EXIT_FAILURE);
}
pause();
return 0;
}
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