main.c

周立功magic2410实验箱源码 第6章Linux高级实验(part2) 6.9 IDE硬盘实验. 6.10 USB主机驱动编译与加载实验 6.11 U盘驱动程序编译与使用实验 6.12

/****************************************Copyright (c)**************************************************
**                               Guangzhou ZHIYUAN electronics Co.,LTD.
**                                     
**                                 http://www.zyinside.com
**
**--------------File Info-------------------------------------------------------------------------------
** File Name: main.c
** Last modified Date: 2006-01-14 
** Last Version: v1.0
** Description: Linxu系统下键盘鼠标应用程序。
** Note: 
**------------------------------------------------------------------------------------------------------
** Created By: 周立山
** Created date: 2006-01-01 
** Version: v1.0
** Descriptions:
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Description:
**
********************************************************************************************************/
#include <stdio.h>
#include <linux/input.h>
#include <fcntl.h>




typedef struct input_event Myinputevent;

#define DEVICENAME "/dev/input/event0"

int main(int argc, char **argv)
{
	int i;
	int fd;
	int n;
	unsigned char data[8];
	Myinputevent event;
	
	fd = open( DEVICENAME , O_RDONLY, 0);				// 打开设备
	if (fd < 0)
	{
		perror("Can't open device...\n");
		exit(1);
	}
	
	while(1)
	{
			printf("Watting event ...\n\n\n");
		  n = read(fd, &event, sizeof(Myinputevent) );
		  if ( n != 16 )
			{
				perror(" Read data error! ");
				exit(1);
			}
			
			if(event.type == EV_KEY)
			{	if((event.code >= BTN_MOUSE)&&(event.code <= BTN_BACK))
					printf("  Mouse key, the code is : %x \n",event.code);
				if((event.code >= KEY_ESC)&&(event.code <= KEY_UNKNOWN))
					printf("  Keyboard key, the code is : %d \n",event.code);
				if(event.value)									// 如果是按键事件，该值为1表示按下，为0表示松开,如果为2表示键盘按键长按。
					printf("    Press down.\n");						
				else
					printf("    Press up.\n");
			}
			if(event.type == EV_REL)		// 轨迹事件类型
			{
				if(event.code == REL_X)		// X轴移动
					printf("  X track moving : %d\n\n",event.value);
				if(event.code == REL_Y)		// Y轴移动
					printf("  Y track moving : %d\n\n",event.value);
				if(event.code == REL_WHEEL)	// 中轮移动
					printf("  WHEEL track moving : %d\n\n",event.value);	
			}
			printf("Exit , please press : Ctrl + C \n");
	}
	return 0;
}