keyscan.h

Atmega64单片机程序（完整工程）

#include "SYS_Config.h"


#define Key_Down     0x11
#define Key_Up       0x12
#define Key_Left     0x13
#define Key_Right    0x14

//设置端口方向
#define Key0_IN()       {DDRF&=~(1<<PF0);PORTF|=(1<<PF0);}
#define Key1_IN()       {DDRF&=~(1<<PF1);PORTF|=(1<<PF1);}
#define Key2_IN()       {DDRF&=~(1<<PF2);PORTF|=(1<<PF2);}
#define Key3_IN()       {DDRF&=~(1<<PF3);PORTF|=(1<<PF3);}

#define Key_STATUS()    (PINF&(0x0F))
//#define Key0_STATUS()   (PINF&(1<<PF0))
//#define Key1_STATUS()   (PINF&(1<<PF1))
//#define Key2_STATUS()   (PINF&(1<<PF2))
//#define Key3_STATUS()   (PINF&(1<<PF3))


extern INT8U Keyvalue;
extern INT8U Key_Deal_Flag;
extern INT8U Keyvalue_first,Keyvalue_second;
extern INT8U Count0,Key_time;
extern void timer0_init(void);