key16.c

键盘扫描程序

#define	                DATA_IN         PINA
#define	                DATA_OUT        PORTA 
#define		            T_CLK	        PORTB.0
#define	            	T_D_IN      	PINB.1
#define	             	T_D_OUT	        PORTB.1
#define		            T_RST           PORTB.2
#define		            con_talk	    PINB.2                               
#define	             	S_DA	        PORTB.3
#define		            SDA_IN	        PINB.3
#define			        con_sound	    PORTB.4
#define			        con_talk	    PORTB.5
#define		        	ring        	PORTB.6
//#define		        KEY_COM2	    PORTB.7
 
#define		            KEY_COM0	        PORTB.0
//#define	                KEY_COM1	        PORTB.1
#define		            KEY_COM2            PORTB.2                              
#define	             	KEY_COM3	        PORTB.3
#define			        KEY_SEG0	        PINB.4
#define			        KEY_SEG1	        PINB.5
#define		        	KEY_SEG2        	PINB.6
#define		            KEY_SEG3	        PINB.7
	
				        
#define		            LCM_RST	        PORTC.2
#define		            LCM_E2	        PORTC.3
#define		            LCM_E1	        PORTC.4 
#define		            PEE	            PORTC.5
#define		            LCM_RW	        PORTC.6
#define		            LCM_A0	        PORTC.7
#define                 KEY_COM1        PORTD.7   
                        
#define		            RXD	            PIND.0
#define		            TXD	            PORTD.1
#define		            S_CK	        PORTD.2
#define		            LED16_DAT	    PORTD.3
#define		            LED32_CLK	    PIND.4
#define		            LED32_DAT    	PIND.5
#define		            LED64_CLK   	PIND.6
//#define	            LED64_DAT   	PIND.7
#define                 EA              SREG.7