86 lines
980 B
NASM
86 lines
980 B
NASM
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; luefterstrg.asm
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; Name: Lueftersteuerung
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; Autor: Hendrik J. Schlehlein
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; Datum: 10.01.2019
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S EQU P2.5
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Tv EQU P3.2
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Tr EQU P3.3
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ORG 0
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SJMP main
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ORG 3
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SJMP SR_hoch
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ORG 13h
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SJMP SR_runter
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SR_hoch:
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SETB EX0
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MOV A, P1
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CJNE A,#240, hoch
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SJMP return0
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hoch:
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RL A
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INC A
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MOV P1, A
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LCALL UP_warte250ms
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return0:
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CLR EX0
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RETI
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SR_runter:
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SETB EX1
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MOV A, P1
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CJNE A,#254, runter
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SJMP return0
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runter:
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DEC A
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RR A
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MOV P1, A
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LCALL UP_warte250ms
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return1:
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CLR EX1
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RETI
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UP_init:
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SETB IT0
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SETB IT1
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SETB EX0
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SETB EX1
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CLR IE0
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CLR IE1
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MOV P1,#255
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RET
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UP_warte250ms:
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MOV R0, #250;2
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MOV R1, #198;2
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MOV R2, #5;2
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while1:
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DJNZ R0, while1;2
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MOV R0, #250
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DJNZ R1, while1
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MOV R1, #199
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DJNZ R2, while1
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RET;2
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main:
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LCALL UP_init
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while0:
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JB S, while0
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MOV P1,#254
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SETB EA
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LCALL UP_warte250ms
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while2:
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JNB S, while2
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while3:
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JB S, while3
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MOV P1,#255
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;CLR EA
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LCALL UP_warte250ms
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while4:
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JNB S, while4
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SJMP while0
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END
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