test.c

来自「用gpio9作中断」· C语言 代码 · 共 55 行

#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <fcntl.h>
#include <unistd.h>

#define TIME_IOC_MAGIC 'E'
#define START_TOY               _IO(TIME_IOC_MAGIC,0)
#define SET_MATCH10_INC_VALUE   _IOR(TIME_IOC_MAGIC,1,int)
#define STOP_TOY               _IO(TIME_IOC_MAGIC,2)

 int main(int argc,char *argv[])
{
   int fd0;
   int c;
   int interval;
   interval=2;
   if((fd0 = open("/dev/counter",O_RDONLY)) < 0)
  	{
    	printf("Error: /dev/counter cann't be opened!\n");
    	return 0;
  	}
    else
    printf("open /dev/counter successful\n");
    
    if(ioctl(fd0,START_TOY))
        printf("ioctl error\n");
    else
        printf("start toy successful\n");
     
    if(ioctl(fd0, SET_MATCH10_INC_VALUE,&interval))
    	printf("ioctl error\n");
    else
   	printf("Value of match10_inc is %0x\n",interval);
    
    while(1)
     {
     	printf("q or Q to quit:>");
     	c=getchar();
     	putchar(c);
     	if((c=='q')||c=='Q')
     	break;
     	printf("\n");
     }	
    if(ioctl(fd0,STOP_TOY))
        printf("ioctl error\n");
    else
        printf("stop toy\n");
  close(fd0);
  printf("close counter\n");
  return 1;
}