keyboard.c

ARM的ADS开发工具下

#include "44b.h"
#include "def.h"
#include "Zlg7289.h"
unsigned char KeyBoard_Map[]={7,4,1,20,10,20,20,20,8,5,
								2,0,11,20,20,20,9,6,3,16,
								12,13,20,20,14,20,15,20,20,20,
								0,0,0,0,0,0,0,0,0,0,
								0,0,0,0,0,0,0,0,0,0,
								0,0,0,0,0,0,0,0,0,0,
								0,0,0,0
								}; //64,键值映射表
U32 GetKey()
{
	U32 key;
	while(1)
	{
		while(1)
       {if(rPDATG&ZLG7289_KEY)continue;
        Delay(500);
        if(!(rPDATG&ZLG7289_KEY))break;
        }
		key=Zlg7289_ReadKey();//得到按键扫描码
		while(1)
       {if(!(rPDATG&ZLG7289_KEY))continue;
        Delay(500);
        if(rPDATG&ZLG7289_KEY)break;
        }
		if(key<=64)
		{//按键值有效
			key=KeyBoard_Map[key];//通过键盘映射表得到按键值
			break;
		}
		Delay(1000);
	}
	return key;
}