key._h

单片机中的中断处理模块

#ifndef		__KEY__H
#define		__KEY__H

#define KEYDOWN    ((PINB & 0xF0) != 0xF0)  //have key down
#define KEYVALUE   (PINB & 0xF0)     //PB.4 PB.5 PB.6 PB.7=the fact value
#define KEY_UP     0xE0 //PB.4      PB.4=0
#define KEY_DOWN   0xD0 //PB.5      PB.5=0
#define KEY_ENTER  0xB0 //PB.6      PB.6=0
#define KEY_ESC    0x70 //PB.7      PB.7=0

void KeyProcess(void);

#endif