hy.asm

用５１实现采样、数码管显示、串口输出。 整个系统在proteus上实现

LED_0   EQU     30H
LED_1   EQU     31H
LED_2   EQU     32H
ADCDATA	EQU	    35H	
CLOCK	BIT	    P2.4
ST	 	BIT 	P2.5
EOC 	BIT 	P2.6
OE	    BIT 	P2.7

       ORG      0000H
       JMP	    START
       ORG      000BH
       LJMP     INT_T0
START:
       MOV     LED_0,#00H
       MOV     LED_1,#00H
       MOV     LED_2,#00H
	   MOV     DPTR,#TABLE
	   MOV     TMOD,#22H
	   MOV     TH0,#245              
	   MOV     TL0,#00H
	   MOV     IE,#82H
	   MOV     SCON,#50H
	   ORL     PCON,#80H
	   MOV     TH1,#0F3H
	   MOV     TL1,#0F3H
       SETB    TR0		
	   SETB    TR1			   
WAIT:  
       CLR 	   ST
	   SETB    ST
	   CLR 	   ST				 
       JNB     EOC,$				
	   SETB    OE					 
	   MOV     ADCDATA,P1	
	   CLR     OE					
	   MOV     A,ADCDATA			
       MOV     B,#100
	   DIV     AB
	   MOV     LED_2,A
	   MOV     A,B
	   MOV     B,#10
	   DIV     AB
	   MOV     LED_1,A
   	   MOV     LED_0,B
	   LCALL   DISP
	   LCALL   AGAIN								
	   SJMP    WAIT
INT_T0: 
       CPL     CLOCK
	   RETI
DISP:  MOV     DPTR,#TABLE
	   MOV     A,LED_0
       MOVC    A,@A+DPTR
	   CLR     P2.3
	   MOV     P0,A
	   LCALL   DELAY
	   SETB    P2.3
	   MOV     A,LED_1
       MOVC    A,@A+DPTR
	   CLR     P2.2
	   MOV     P0,A
	   LCALL   DELAY
	   SETB    P2.2
	   MOV     A,LED_2
       MOVC    A,@A+DPTR
	   CLR     P2.1
	   MOV     P0,A
	   LCALL   DELAY
	   SETB    P2.1
	   RET
AGAIN:
	   MOV     DPTR,#ASCII
	   MOV     A,LED_2
       MOVC    A,@A+DPTR
	   MOV     SBUF,A
	   JNB     TI,$
	   CLR     TI
	   MOV     A,LED_1
       MOVC    A,@A+DPTR
	   MOV     SBUF,A
	   JNB     TI,$
	   CLR     TI
	   MOV     A,LED_0
       MOVC    A,@A+DPTR
	   MOV     SBUF,A
	   JNB     TI,$
	   CLR     TI
	   MOV	   A,#0DH
	   MOV     SBUF,A
	   JNB     TI,$
	   CLR     TI
	   RET
DELAY: MOV     R6,#10              ;延时5ms
D1:    MOV     R7,#250
       DJNZ    R7,$
	   DJNZ    R6,D1
	   RET
TABLE: DB      3FH,06H,5BH,4FH,66H
       DB      6DH,7DH,07H,7FH,6FH
ASCII: DB	   30H,31H,32H,33H,34H,35H,36H,37H,38H,39H
       END