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Sourcecode: dahdi-tools version File versions  Download package

timertest.c

/*
 * Written by Mark Spencer <markster@digium.com>
 * Based on previous works, designs, and architectures conceived and
 * written by Jim Dixon <jim@lambdatel.com>.
 *
 * Copyright (C) 2001 Jim Dixon / Zapata Telephony.
 * Copyright (C) 2001-2008 Digium, Inc.
 *
 * All rights reserved.
 *
 * Primary Author: Mark Spencer <markster@digium.com>
 * Radio Support by Jim Dixon <jim@lambdatel.com>
 */

/*
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2 as published by the
 * Free Software Foundation. See the LICENSE file included with
 * this program for more details.
 */

#include <string.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/time.h>
#include <errno.h>

#include <dahdi/user.h>
#include "dahdi_tools_version.h"

int main(int argc, char *argv[])
{
      int fd;
      int x = 8000;
      int res;
      fd_set fds;
      struct timeval orig, now;
      fd = open("/dev/dahdi/timer", O_RDWR);
      if (fd < 0) {
            fprintf(stderr, "Unable to open timer: %s\n", strerror(errno));
            exit(1);
      }
      printf("Opened timer...\n");
      if (ioctl(fd, DAHDI_TIMERCONFIG, &x)) {
            fprintf(stderr, "Unable to set timer: %s\n", strerror(errno));
            exit(1);
      }
      printf("Set timer duration to %d samples (%d ms)\n", x, x/8);
      printf("Waiting...\n");
      gettimeofday(&orig, NULL);
      for(;;) {
            FD_ZERO(&fds);
            FD_SET(fd, &fds);
            res = select(fd + 1, NULL, NULL, &fds, NULL);
            if (res != 1) {
                  fprintf(stderr, "Unexpected result %d: %s\n", res, strerror(errno));
                  exit(1);
            }
            x = -1;
            if (ioctl(fd, DAHDI_TIMERACK, &x)) {
                  fprintf(stderr, "Unable to ack timer: %s\n", strerror(errno));
                  exit(1);
            }
            gettimeofday(&now, NULL);
            printf("Timer Expired (%ld ms)!\n", (now.tv_sec - orig.tv_sec) * 1000 + (now.tv_usec - orig.tv_usec) / 1000);
      }
      exit(0);
}

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