基于單片機(jī)的紅外發(fā)射控制燈的設(shè)計(jì)-資料下載頁(yè)
2025-06-19 12:58本頁(yè)面
【正文】 。3 BJNB , $ 。跳過(guò)后續(xù)低電平CO: MOV R7, 5 。2us 編碼中的高電平到來(lái)后，延時(shí)等待5個(gè)脈沖的時(shí)間LCALL DEL10us 。3JNB , REceive 。3 C 延時(shí)15個(gè)脈沖后，MOV R7, 10 。2LCALL DEL10us 。3 DJNB , REceive1 。3 =1,接收為39。039。，否則為39。139。receive0:mov r7, 10 。2 LCALL DEL10us 。3 Jb , receive 。3 E39。 mov r7, 10 。2 LCALL DEL10us 。3 jNb , receive 。3 F39。 mov r7, 10 。2 LCALL DEL10us 。 3 jNb , receive 。3 G39。 mov r7, 10 。2 LCALL DEL10us 。3 jb , receive 。3 H39。 CLR C RLC AjNb , $ 。跳過(guò)后續(xù)低電平LJMP NEXTREceive1:mov r7, 10 。2 LCALL DEL10us 。3 jb , receive 。3 E mov r7, 10 。2 LCALL DEL10us 。3 jNb , receive 。3 F mov r7, 10 。2 LCALL DEL10us 。3 jb , receive 。3 G mov r7, 10 。2 LCALL DEL10us 。3 jb , receive 。 3 H SETB C RLC A jNb ,$ 。跳過(guò)后續(xù)低電平 LJMP NEXTNEXT: DJNZ R5, CO 。8位未接收完繼續(xù)。************接收數(shù)據(jù)判別并處理******************************************* mov 25h,a cjne a,00h,k1 cpl ljmp receivek1: cjne a,01h,k2 cpl ljmp receivek2: cjne a,02h,k3 cpl ljmp receivek3: cjne a,03h,k4 cpl ljmp receivek4: cjne a,04h,k5 cpl ljmp receivek5: cjne a,05h,k6 cpl ljmp receivek6: cjne a,06h,k7 cpl ljmp receivek7: cjne a,07h,k8 cpl ljmp receivek8: cjne a,08h,k9 cpl ljmp receivek9: cjne a,09h,k10 cpl ljmp receivek10: cjne a,0ah,k11 cpl ljmp receivek11: cjne a,0bh,k12 cpl ljmp receivek12: cjne a,0ch,k13 cpl ljmp receivek13: cjne a,0dh,k14 cpl ljmp receivek14: cjne a,0eh,k15 cpl ljmp receivek15: cjne a,0fh,k16 cpl ljmp receivek16: LJMP RECEive。************26us低電平***************************************DEL10us:D1: MOV R6,12 。2 DJNZ R6,$ 。2*R6 DJNZ R7,D1 。2 RET 。119
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