kbddemo.c

来自「uClinux 基于S3C44B0X 键盘驱动」· C语言 代码 · 共 41 行

#include <stdio.h>

#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/stat.h>


main(void)
{
	int i,cc;
	char buf[1];
  int fd;
  if( ( fd=open("/dev/keyboard",O_RDWR|O_NONBLOCK) ) ==-1 ){
	  printf("open keyboard err\n");
	  exit(-1);
	}
	else
	  printf("keyboard opened\n");

	for(;;)
	{
		cc = read(fd, buf, 1);
		if(cc > 0)
			printf("keyboard read 0x%2x\n",buf[0]);
		if(buf[0] > 0)
			printf("keyboard read 0x%2x!!!!!!!!!!!!!!!\n",buf[0]);	
		//if( buf[0] == 0x11 )
		//	break;
	}
	
	//getchar();
	close(fd);
	return 0;
}