keyboard_test.c

来自「键盘驱动程序」· C语言 代码 · 共 41 行

/*
BCNG software: keybaoard test 
*/



#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

int main()
{
	int buttonFD,tempint;
	
	unsigned short buffer[1];
	
	if ((buttonFD = open("/dev/keyboard", O_RDONLY | O_NDELAY, 0)) < 0)
	{
		printf("Cannot open keyboard\n");
  		return -1;
    	}
    	
    	while(1)
    	{    	
    		tempint=read(buttonFD,buffer,1);
    		if(tempint > 0 )
		{
			printf("\nCurrent Press Buttom %d \n",buffer[0]);
		}
    	}	
    	return 1;	

}