ms_test_relay.c

四路继电器输出,基于linux 2.4的驱动及测试程序.

#include <stdio.h>     
#include <stdlib.h>
#include <sys/ioctl.h>  
#include <unistd.h>
#include <fcntl.h>

//#include <asm/arch/major.h>


#define DEVICE_RELAY "/dev/relaydriver"

#define RELAY1_ON_PLUSE  1
#define RELAY1_ON        2
#define RELAY1_OFF       3
#define RELAY2_ON_PLUSE  4
#define RELAY2_ON        5
#define RELAY2_OFF       6
#define RELAY3_ON_PLUSE  7
#define RELAY3_ON        8
#define RELAY3_OFF       9
#define RELAY4_ON_PLUSE  10
#define RELAY4_ON        11
#define RELAY4_OFF       12

int main()
{
	int fd; 
	int val=-1;
	//int ret = 0;
     	  
	if((fd=open(DEVICE_RELAY,O_RDONLY | O_NONBLOCK))<0)
	{
		perror("can not open device");
		exit(1);
	}

	while(1){

		      printf("1:RELAY1_ON_PLUSE(100ms) , 2:RELAY1_ON, 3:RELAY1_OFF\n");
		      printf("4:RELAY2_ON_PLUSE(100ms) , 5:RELAY2_ON, 6:RELAY2_OFF\n");
		      printf("7:RELAY3_ON_PLUSE(100ms) , 8:RELAY3_ON, 9:RELAY3_OFF\n");
		      printf("10:RELAY4_ON_PLUSE(100ms) , 11:RELAY4_ON, 12:RELAY4_OFF\n");
		      printf("0: exit\n");
		      printf("please choose :__");
		      printf("\n");
		      scanf("%d",&val);

          switch(val)
          {
          	case RELAY1_ON_PLUSE:
          			 ioctl(fd,RELAY1_ON_PLUSE,100);
          			 break;
          	case RELAY1_ON:
          			 ioctl(fd,RELAY1_ON,val);
          			 break;
          	case RELAY1_OFF:
          			 ioctl(fd,RELAY1_OFF,val);
          			 break;
          	case RELAY2_ON_PLUSE:
          			 ioctl(fd,RELAY2_ON_PLUSE,100);
          			 break;
          	case RELAY2_ON:
          			 ioctl(fd,RELAY2_ON,val);
          			 break;
          	case RELAY2_OFF:
          			 ioctl(fd,RELAY2_OFF,val);
          			 break;
          	case RELAY3_ON_PLUSE:
          			 ioctl(fd,RELAY3_ON_PLUSE,100);
          			 break;
          	case RELAY3_ON:
          			 ioctl(fd,RELAY3_ON,val);
          			 break;
          	case RELAY3_OFF:
          			 ioctl(fd,RELAY3_OFF,val);
          			 break;
          	case RELAY4_ON_PLUSE:
          			 ioctl(fd,RELAY4_ON_PLUSE,100);
          			 break;
          	case RELAY4_ON:
          			 ioctl(fd,RELAY4_ON,val);
          			 break;
          	case RELAY4_OFF:
          			 ioctl(fd,RELAY4_OFF,val);
          			 break;
          	case 0:
          			 close(fd);
          			 exit(0);
          			 break;
            default:
                 printf("  err ! \n");
                 break;
          }        
	}
	return 0;
}