interrupt.c

linux下的中断实例程序

#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>

#include "eintdrv.h"

static int fd = -1;

/*
 * interrupt application code
 * compile :
 *          $/usr/local/arm/2.95.3/bin/arm-linux-gcc -o interrupt interrupt.c
 *          $cp interrupt /tftpboot/examples
 * run in target:
 *          #mount 192.168.1.180:/tftpboot/ /mnt/nfs
 *          #cd /mnt/nfs/examples
 *          #insmod eintdrv.o
 *          #mknod eint c 98 0
 *          #./interrupt
 */
int main(int argc, char **argv)
{
	fd=open("/dev/eint",O_RDWR);
	if(fd<0) 
	{
		printf("Can't open\n");
		return -1;
	}
	else
	{
		printf("open OK %x\n", fd);
	}

	getchar();

   	close(fd);
   	
  	return 0;
}