sd.c

linux 下SD卡使用详细代码,请查看详细代码内容.

#include <stdio.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#define CM_SD_IN 117
int main(int argc, char *argv[])
{int flags;
	int fpid = -1;
	fpid = open("dev/pvi_io", O_RDWR);
	if(fpid < 0)
		{printf("open pvi_io error!\n");
			return 1;}
	printf("before sd card insert!");
	ioctl(fpid,CM_SD_IN,&flags);
	printf("sd card insert!");
	close(fpid);
	return 1;
	}