keyboard.c

来自「ARM键盘及LED显示用C实现」· C语言 代码 · 共 30 行

#include "44b.h"
#include "def.h"
#include "Zlg7289.h"
unsigned char KeyBoard_Map[]={4,8,11,0,0,0,0,0,5,9,
								12,15,1,0,0,0,6,10,13,16,
								2,3,0,0,7,0,14,0,0,0,
								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,
								0,0,0,0
								}; //64,键值映射表
U32 GetKey()
{
	U16 key;
	while(1)
	{
		while((rPDATG&ZLG7289_KEY));//有键按下
		key=Zlg7289_ReadKey();//得到按键扫描码
		Uart_Printf("\n%d",key);
		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;
}