/*
 *	Real Time Clock Driver Test/Example Program
 *
 *	Copyright (C) 1996, Paul Gortmaker.
 *	zaptel modifications (C) 2003 Junghanns.NET GmbH, Klaus-Peter Junghanns
 *
 *	Released under the GNU General Public License, version 2,
 *	included herein by reference.
 *
 */

#include <stdio.h>
#include <linux/rtc.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>

int main(void) {

int i, fd, retval, irqcount = 0;
unsigned long tmp, data;
struct rtc_time rtc_tm;

fd = open ("/dev/rtc", O_RDONLY);

if (fd ==  -1) {
	perror("/dev/rtc");
	exit(errno);
}


/* Turn off update interrupts */
retval = ioctl(fd, RTC_UIE_OFF, 0);
if (retval == -1) {
	perror("ioctl1");
	exit(errno);
}

/* Disable alarm interrupts */
retval = ioctl(fd, RTC_AIE_OFF, 0);
if (retval == -1) {
	perror("ioctl2");
	exit(errno);
}


	retval = ioctl(fd, RTC_IRQP_SET, 1000);
	if (retval == -1) {
		perror("ioctl3");
		exit(errno);
	}

	/* Enable periodic interrupts */
	retval = ioctl(fd, RTC_PIE_ON, 0);
	if (retval == -1) {
		perror("ioctl4");
		exit(errno);
	}

for (;;) {
    sleep(10000);
}
close(fd);
return 0;

} /* end main */