testadc.c

来自「AT9260处理器Linux2.6.24内核AD转换驱动程序」· C语言 代码 · 共 46 行

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

#define	ADC_GET		1
#define	MAX_CHAN_NUM	4


typedef struct adc_data {
	unsigned int data[MAX_CHAN_NUM];
}adc_data;

int main()
{
	int fd;
	int i;
	static struct adc_data ioctl_data;

	fd = open("/dev/ADC", O_RDWR);
	if(fd < 0){
		printf("Device open failed!\n");
		exit(1);
	}

	while(1)
	{
		ioctl(fd, ADC_GET, &ioctl_data);

		for(i = 0; i < MAX_CHAN_NUM; i ++){
			printf("Channel[%d]: 0x%x\n", i, ioctl_data.data[i]);
		}
		sleep(3);
	}
	
	
	close(fd);

}