/***************************************************************/
/*底層驅動名稱:???4*4按鍵翻轉式掃描驅動??
/*入?口??參?數：??無??宏定義：Key_Port?P2??????
/*出?口??參?數：??按鍵值（十進制）???????????????
/*作????????者：??先永?????完成時間：2009、2、20	??
/***************************************************************/

#include?
#include?

unsigned?char?Key_Value=0;
unsigned?char?Key_flag?=0;


void?Interrupt0_Key?（void）
{
	IT0=1;????????????//設置下降沿中觸發
	EA=1;	??????????//開總中斷
	EX0=1;	??????????//開外部中斷
	Key_Port=0X0f;
}
							???
unsigned?char?code?Key_code[]=
{
	//p0????p1???p2??p3
	0xee0xed0xeb0xe7???//p4
	0xde0xdd0xdb0xd7???//p5
	0xbe0xbd0xbb0xb7???//p6
	0x7e0x7d0x7b0x77??//p7
};

//以上為鍵碼，換他們排列順序就可以壞氐
void?Int0?（）?interrupt?0
{
	unsigned?char?	KeyV_lKeyV_hKeyVi;
			??	
	if（Key_Port!=0X0f）		??//0000?1111??有按鍵的時候就可能是0000?1110；
	{
		//Delay（）;
		if（Key_Port!=0X0f）		??//0000?1111??有按鍵的時候就可能是0000?1110；
		{
			KeyV_l=Key_Port&0x0f;?//取出鍵碼的?低4位
			Key_Port=0XF0;
			KeyV_h=Key_Port&0xf0;?//取出鍵碼的?高4位
			KeyV=KeyV_h+KeyV_l;	??//合并鍵碼
	
			/*************************************
		????按鍵編碼?????????對應?????????鍵值
			Ee???ed???eb??e7		?1	5??9???13
			De???dd???db??d7		?2	6??10??14
			Be???bd???bb??b7		?3	7??11??15
			7e???7d???7b??77		?4	8??12??16
			*************************************/
			for（i=0;i<16;i++）???	//利用鍵碼查找鍵值
			{
				if（Key_code[i]==KeyV）
				Key_Value=（i+1）;
			}
			Key_Port=0X0f;
		}
	}

	Key_flag?=1;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1399??2009-07-13?13:31??51單片機貪吃蛇程序\7SEG.C

?????文件????????718??2009-07-13?13:25??51單片機貪吃蛇程序\7SEG.h

?????文件???????1627??2009-10-11?12:16??51單片機貪吃蛇程序\KEY_SWEEP.c

?????文件????????602??2009-10-10?16:54??51單片機貪吃蛇程序\KEY_SWEEP.H

?????文件???????4101??2009-10-11?14:24??51單片機貪吃蛇程序\KEY_SWEEP.LST

?????文件???????1169??2009-10-11?14:24??51單片機貪吃蛇程序\KEY_SWEEP.OBJ

?????文件??????12937??2009-10-11?14:06??51單片機貪吃蛇程序\LCD_SSD1283.C

?????文件???????3695??2009-10-11?10:47??51單片機貪吃蛇程序\LCD_SSD1283.H

?????文件??????28024??2009-10-11?14:24??51單片機貪吃蛇程序\LCD_SSD1283.LST

?????文件??????14910??2009-10-11?14:24??51單片機貪吃蛇程序\LCD_SSD1283.OBJ

?????文件????????867??2009-10-11?14:08??51單片機貪吃蛇程序\Main.C

?????文件???????2050??2009-10-11?14:24??51單片機貪吃蛇程序\Main.LST

?????文件????????631??2009-10-11?14:24??51單片機貪吃蛇程序\Main.OBJ

?????文件?????129338??2009-09-30?11:03??51單片機貪吃蛇程序\picture.H

?????文件??????14127??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE

?????文件???????9196??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE.c

?????文件????????186??2009-10-11?13:40??51單片機貪吃蛇程序\SNAKE.h

?????文件??????15290??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE.hex

?????文件?????????93??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE.lnp

?????文件??????18228??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE.LST

?????文件??????42188??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE.M51

?????文件???????7351??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE.OBJ

?????文件???????1165??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE.Opt

?????文件???????1448??2009-10-11?14:24??51單片機貪吃蛇程序\SNAKE.plg

?????文件???????2572??2009-10-11?14:09??51單片機貪吃蛇程序\SNAKE.Uv2

????.......??????1028??2009-10-11?14:09??51單片機貪吃蛇程序\SNAKE_Opt.Bak

????.......??????2575??2009-10-11?14:06??51單片機貪吃蛇程序\SNAKE_Uv2.Bak

?????文件????????190??2009-10-11?14:09??51單片機貪吃蛇程序\ssd1283a.plg

????.......??????3725??2009-10-11?13:17??51單片機貪吃蛇程序\ssd1283a_Opt.Bak

????.......??????2539??2009-10-10?17:11??51單片機貪吃蛇程序\ssd1283a_Uv2.Bak

............此處省略7個文件信息