+Example Watchdog Driver
+-----------------------
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int main(int argc, const char *argv[])
+{
+ int fd=open("/dev/watchdog",O_WRONLY);
+ if(fd==-1)
+ {
+ perror("watchdog");
+ exit(1);
+ }
+ while(1)
+ {
+ write(fd,"\0",1);
+ fsync(fd);
+ sleep(10);
+ }
+}