mykey_test（测试程序）.c

这个是Linux下的按键驱动程序

#include <stdio.h>
#include <stdlib.h>
#include <asm/ioctl.h>
#include <asm/errno.h>
#include <linux/slab.h>
#include <fcntl.h>
#include <pthread.h>
#include <string.h>
#include <unistd.h>

int fb;

unsigned short value;

int main()
{
	fb = open("/dev/my_key",O_RDWR);
	if(!fb)
	{
		printf("open device is fail !!! \n");
		return 0;
	}
	while(1)
	{
	
		getchar();
		read(fb,&value,sizeof(short));
		printf("the key value is 0x%04x \n",value);
		getchar();
	}
	close(fb);
	return 0;
}