2路ADC0808测量数码管显示汇编程序 -

标题: 2路ADC0808测量数码管显示汇编程序 [打印本页]

作者: bbxyliyang 时间: 2019-10-10 20:24
标题: 2路ADC0808测量数码管显示汇编程序

LED1  EQU  31H
LED2  EQU  32H
LED3  EQU  33H
ADC EQU  35H
BIAOZHI  EQU 36H
ST BIT  P3.2
EOC BIT  P3.3
OE BIT  P3.1
      ORG 00H
   SJMP START
      ORG 0BH
  MOV BIAOZHI,#00H
START:  MOV P3,#0FFH
      MOV LED1,#00H
      MOV LED2,#00H
      MOV LED3,#00H
      MOV DPTR,#TAB
  JB P3.7,MAINNOKEY       //检测到按键
   LCALL SETCHANNEL
SETCHANNEL:       //通道切换子函数
LCALL DELAY5MS //去抖动流程
JB P3.7,SETCHANNELEND

JNB P3.7,$    //等待松开按键
MOV A,BIAOZHI
CPL A
MOV BIAOZHI,A


SETCHANNELEND:
RET

MAINNOKEY:MOV R4,#250
   MOV R5,#250
WAIT:
   MOV A,BIAOZHI

   CJNE A,#00,WAIT2
SETB P3.0

   CLR ST
   SETB ST
      CLR ST
      JNB EOC,$
   SETB OE
      MOV ADC,P1
      CLR OE
      MOV A,ADC
      MOV B,#51
      DIV AB
      MOV LED3,A
      MOV A,B
      MOV B,#5
      DIV AB
      MOV LED2,A
      MOV LED1,B
      LCALL DISP
LJMP START
   // DJNZ R4,WAIT
WAIT2:  CLR P3.0
      CLR ST
   SETB ST
      CLR ST
      JNB EOC,$
      SETB OE
      MOV ADC,P1
      CLR OE
      MOV A,ADC
      MOV B,#51
      DIV AB
      MOV LED3,A
      MOV A,B
      MOV B,#5
      DIV AB
      MOV LED2,A
      MOV LED1,B
      LCALL DISP
   // DJNZ R5,WAIT2
      LJMP START

DISP: MOV A,#03EH
   CLR P2.3
   MOV P0,A
   LCALL DELAY
   SETB P2.3

   MOV A,LED1
   MOVC A,@A+DPTR
   CLR P2.2
   MOV P0,A
   LCALL DELAY
   SETB P2.2

   MOV A,LED2
   MOVC A,@A+DPTR
   CLR P2.1
   MOV P0,A
   LCALL DELAY
   SETB P2.1

   MOV A,LED3
   MOVC A,@A+DPTR
   CLR P2.0
   ORL A,#80H
   MOV P0,A
   LCALL DELAY
   SETB P2.0

   RET

DELAY:  MOV R6,#10
D1:  MOV R7,#250
   DJNZ R7,$
   DJNZ R6,D1
      RET
DELAY5MS:
PUSH 0X06
PUSH 0X07
MOV R6,#0c4H
DL1: MOV R7,#0CH
DL2: DJNZ R7,DL2
DJNZ R6,DL1
POP 0X07
POP 0X06
RET
TAB:DB 3FH,06H,5BH,4FH,66H
DB 6DH,7DH,07H,7FH,6FH
   END

作者: bbxyliyang 时间: 2019-10-10 20:26
程序加仿真！

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