main.c

观也u内核和开发法程序/。很好用

#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <sys/ioctl.h>

#define put_wtd_data 0x5010

void FeedDog();   
int fd;

int main(void)
{
   int times;
   if((fd=open("/dev/2410wtd",O_RDWR))==-1)
   {
      perror("open eror");
      exit(1);
   }
   printf("open ok\n");

   times=0;
   while(1)
   {
	FeedDog();
	//*(int *)0=0;
	//sleep(10);
	sleep(1);
	times++;
	printf("times=%d\n",times);
   }

   close(fd);
   return 0;
}

void FeedDog()
{
   unsigned int *arginfo=(unsigned int *)malloc(4);
   *arginfo=0x2000;//5s       mast feed dog in "5"s    you can define it according  your programm , such as *arginfo=0x1000   "2.5"S 
   if(ioctl(fd,put_wtd_data,arginfo)!=0)
   {
      perror("ioctl erreor");
      exit(1);
   }	
}