key.h

基于PROTERUS仿真的AVR例子

#ifndef KEY_H
#define KEY_H
#ifdef  KEY_C
#define NO_KEY 255

#define K1_1 1
#define K1_2 2
#define K1_3 3

#define K2_1 4
#define K2_2 5
#define K2_3 6

#define K3_1 7
#define K3_2 8
#define K3_3 9

#define K4_1 10
#define K4_2 11
#define K4_3 12

#define KEY_MASK   0x07
#define KEY_PORT   PORTD
#define KEY_PIN    PIND


unsigned char key_scan(void);
char read_keybord(void);
#else
extern unsigned char key_scan(void);
extern char read_keybord(void);
#endif
#endif