key5.h

本设计以ATMEL公司生产的AT90S8515作为控制核心

// key5.h
//

#define KEY_PORT PORTD
#define KEY_DDR  DDRD
#define KEY_PIN  PIND
#define KEY_PORT_TEMP 0x3B
#define KEY_DDR_TEMP  0Xc4
#define KEY_FN		  1
#define KEY_CU		  2
#define KEY_INC		  3
#define KEY_DEC		  4
#define KEY_OK		  5

unsigned char key_scan(void);
unsigned char keypad(void);
void key_service(unsigned char x,unsigned char y,unsigned char data_length,unsigned int *value);