基于單片機(jī)匯編的數(shù)字電壓表Proteus仿真程序

ID:631712 · 發(fā)表于 2020-2-26 17:15

ZMW_0 EQU 30H
ZMW_1 EQU 31H
ZMW_2 EQU 32H
ADC EQU 35H
CLOCK BIT P2.4
ST BIT P2.5
EOC BIT P2.6
OE BIT P2.7
ORG 00H
SJMP START
ORG 0BH
LJMP INT_T0
START:MOV ZMW_0,#00H
MOV P2,#0FFH
MOV ZMW_1,#00H
MOV ZMW_2,#00H
MOV DPTR,#TABLE
MOV TMOD,#02H
MOV TH0,#245
MOV TL0,#245
MOV IE,#82H
SETB TR0
WAIT:CLR ST
   SETB ST
  CLR ST
  JNB EOC,$
  SETB OE
  MOV ADC,P1
  CLR OE
  MOV A,ADC
  MOV B,#51
  DIV AB
  MOV ZMW_2,A
  MOV A,B
  MOV B,#5
  DIV AB
  MOV ZMW_1,A
  MOV ZMW_0,B
  LCALL DISP
  SJMP WAIT
INT_T0:CPL CLOCK
   RETI
DISP:MOV A,ZMW_0
   MOVC A,@A+DPTR
  CLR P2.3
  MOV P0,A
  LCALL DELAY
  SETB P2.3
  MOV A,ZMW_1
  MOVC A,@A+DPTR
  CLR P2.2
  MOV P0,A
  LCALL DELAY
  SETB P2.2
  MOV A,ZMW_2
  MOVC A,@A+DPTR
  CLR P2.1
  ORL A,#80H
  MOV P0,A
  LCALL DELAY
  SETB P2.1
  RET
DELAY:MOV R6,#10
D1:MOV R7,#250
DJNZ R7,$
DJNZ R6,D1
RET
TABLE:DB 3FH,06H,5BH,4FH,66H
   DB 6DH,7DH,07H,7FH,6FH
END

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基于單片機(jī)匯編的數(shù)字電壓表Proteus仿真程序