#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/time.h>
#include <time.h>  
#include <signal.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
//#include <termios.h>
#include <asm/ioctls.h>
#include <asm/termios.h>
#include <linux/serial.h>

int main(int argc,char *argv[])
{
	int fd;
	int integer;
	struct serial_icounter_struct icnt;

	if (argc != 2) {
		fprintf(stderr,"Usage:\n"
			"dcdtest <devicename>\n");
		return -1;
	}
	fd=open(argv[1], O_RDONLY);
	if (fd<0) {
		perror("open failed");
		return -1;
	}
	while(1) {

		if(ioctl(fd,TIOCMIWAIT, TIOCM_RNG | TIOCM_DSR | TIOCM_CD)) {
			perror("ioctl failed");
			return -1;
		}
		if(ioctl(fd,TIOCMGET,&integer)) {
			perror("ioctl failed");
			return -1;
		}
		printf("TIOCMGET integer=%x\n",integer);
		if(ioctl(fd,TIOCGICOUNT,&icnt)) {
			perror("ioctl failed");
			return -1;
		}
	}
	close(fd);
}