keys.h

基于89S52的电子时钟

#ifndef __KEY_H__
#define __KEY_H__
#include "main.h"
//按键定义
#define KEY1  0x01
#define KEY2  0x02
//长按键编码
#define KEY1L 0x81
#define KEY2L 0x82

#define KEY1IN  (P3&(1<<3))   /* key1 连接在P3.3口 */
#define KEY2IN  (P3&(1<<4))   /* key2 连接在P3.4口 */

//按键变量
typedef struct _KEYBoard
{
 unsigned char  Value;
 unsigned char  OldValue;
 unsigned char  NewValue;
 unsigned char  PressedTime;
 unsigned char  LongKey;
}KEYBoard;

extern KEYBoard Key;

void ScanKey(void);
void KEYBoardInit(void);


#endif