main.c

来自「我修改sbc2410开发板的例子成功运行的s3c2410的字符驱动。」· C语言 代码 · 共 34 行

#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>

#include "drv.h"

int main(void)
{
	int fd = -1;
	int num;
	int ret;
	
	fd = open("/dev/cyc_io",O_RDWR);
	if(fd<0){
		printf("Can't open\n");
		return -1;
	}
	else{
		printf("Open OK %x\n", fd);
	}

	while(1)
	{
		printf("Enter a number:\n");
		scanf("%d", &num);
             ret = ioctl(fd, IOCTL_SET_MSG, &num);
	}

	close(fd);

	return 0;
}