key_74165.h

C语言单片机编程的代码及教程文献

#ifndef _KEY_74165_H_
#define _KEY_74165_H_

#ifdef KEY_74165_GLOBALS
//	#include <reg52.h>
	#define KEY_74165_EXT
#else 
	#define KEY_74165_EXT extern 
#endif
	#define uint8 unsigned char
	#define uint16 unsigned int
sbit Key_CLK=P2^1;
sbit Key_SL =P2^2;
sbit Key_OUT=P2^3;
sbit Key_CS =P2^4;
//即时返回扫描到的键值
KEY_74165_EXT uint8 GetKey(void);
//扫描键盘，等用户释放再返回键值,ASCII码:0~f
KEY_74165_EXT uint8 GetOneKey(void);
#endif