?? pwm電機調速.asm
字號:
ORG 0000H
AJMP MAIN
ORG 001BH
AJMP INT_0
ORG 0030H
MAIN:
MOV 70H,#00H
MOV 71H,#00H
MOV 72H,#00H
MOV 73H,#00H
MOV 75H,#00H
MOV DPTR,#0FF82H
MOV A,#0D1H
MOVX @DPTR,A
WAIT: MOVX A,@DPTR
JB ACC.7,WAIT
MOV A,#00H
MOVX @DPTR,A
MOV A,#2AH
MOVX @DPTR,A
LCALL DISP
LP1: MOV DPTR,#0FF82H
MOVX A,@DPTR
ANL A,#3FH
JZ LP1
LCALL KEY
JBC F0,START
AJMP LP1
START: MOV P1,#01H
MOV 75H,#0BH
MOV A,#4B0H
LCALL HBCD
LCALL TRANS
LCALL DISP
RET
LP2: MOV DPTR,#0FF82H
MOVX A,@DPTR
ANL A,#3FH
JZ LP2
LCALL GETKEY
CJNE A,#0BH,YY
AJMP MAIN
YY: CJNE A,#0CH,RETURN2
AJMP START1
RETURN2: RETI
START1: MOV P1,#02H
MOV 75H,#0CH
MOV A,#4B0H
LCALL HBCD
LCALL TRANS
LCALL DISP
RET
KEY:
LCALL GETKEY
CJNE A,#0AH,RETURN1
SETB F0
AJMP RETURN1
RETURN1:RET
GETKEY: MOV A,#40H
MOV DPTR,#0FF82H
MOVX @DPTR,A
MOV DPTR,#0FF80H
MOVX A,@DPTR
ANL A,#3FH
MOV R4,A
RET
TRANS: MOV R0,#42H
MOV R1,#70H
MOV R7,#03H
LAST:MOV A,@R0
ANL A,#0FH
MOV @R1,A
MOV A,@R0
ANL A,#0F0H
SWAP A
INC R1
MOV @R1,A
INC R1
DEC R0
DJNZ R7,LAST
RET
HBCD: CLR A
MOV 40H,A
MOV 41H,A
MOV 42H,A
MOV R2,#10H
HB3: MOV A,R5
RLC A
MOV R5,A
MOV A,R4
RLC A
MOV R4,A
MOV A,42H
ADDC A,42H
DA A
MOV 42H,A
MOV A,41H
ADDC A,41H
DA A
MOV 41H,A
MOV A,40H
ADDC A,40H
MOV 40H,A
DJNZ R2,HB3
RET
DISP: MOV DPTR,#0FF82H
MOV A,#90H
MOVX @DPTR,A
MOV R1,#70H
MOV R7,#04H
MOV DPTR,#0FF80H
LOOP:MOV A,@R1
ADD A,#05H
MOVC A,@A+PC
MOVX @DPTR,A
INC R1
DJNZ R7,LOOP
RET
DB 3FH,06H,5BH,4FH,66H,6DH
DB 7DH,07H,7FH,6FH ,0AH,0BH
END
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