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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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數(shù)字電壓表.rar
2020-2-26 17:14 上傳
點(diǎn)擊文件名下載附件
下載積分: 黑幣 -5
83.71 KB, 下載次數(shù): 39, 下載積分: 黑幣 -5
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