/*
 * Test program of ptimer driver (/dev/ptimer).
 *
 * Copyright (C) 2001 MontaVista Software Inc.
 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
 *
 * 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.
 *
 */

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

/*
 * IOCTL CMD
 */
#define         PTIMER_SET_PERIOD       0
#define         PTIMER_GET_PERIOD       1

main()
{
	unsigned long period;
	int fd = open("/dev/ptimer", O_RDONLY);

	if (fd < 0) {
		printf("failed to open /dev/ptimer\n");
		exit(-1);
	}
	
	if (ioctl(fd, PTIMER_GET_PERIOD, &period) < 0) {
		printf("failed to get period\n");
		exit(-1);
	}
	printf("Initial period is %d\n", period);

	/* we use 1 sec period */
	if (ioctl(fd, PTIMER_SET_PERIOD, 100) < 0) {
		printf("failed to set period\n");
		exit(-1);
	}
	ioctl(fd, PTIMER_GET_PERIOD, &period);
	printf("New period is %d\n", period);

	printf("loop to read /dev/ptimer ...\n");

	for(;;) {
		int count;
		int ret;
		ret = read(fd, &count, sizeof(count));
		if (ret == sizeof(count)) {
			printf("read ok : count=%d, ret=%d\n", count, ret);
		} else {
			printf("read failed\n");
		}
	}
}