mini2440 ADC可调电阻驱动程序开发源代码(杂项设备(3)

fd = open(MYADC,O_RDWR,0666);
 if (fd < 0)
 {
  perror("open device adc_driver error\n");
  exit(1);
 }
 printf("open /dev/adc_driver success!\n");

 while(1)
 {
  read(fd,&value,4);

printf("result value=%d\n",value);
 
  Delay_MS(1000);
 }
 
 if(close(fd)<0)
 {
  perror("close error\n");
  exit(1);
 }
 
 return 0;
}