單片機設(shè)計--交通燈-文庫吧在線文庫
【正文】 DJNZ R6,WAIT2DEC R5DJNZ R7,L3 NEXT2:MOV A,0C7H //南北綠燈亮，東西紅燈亮MOV P1,AMOV R5,09HMOV R7,0AHLP1:LCALL LEDLP2:MOV R6,14HHERE2:JNB TF0,HERE2MOV TH0,3CHMOV TL0,0B0HCLR TF0DJNZ R6,HERE2DEC R5DJNZ R7,LP1NEXT3:MOV R5,04HMOV R7,05HLP3:LCALL LEDMOV A,0CFH MOV P1,ALP4:MOV R6,0AHWAIT3:JNB TF0,WAIT3CLR TF0MOV TH0,3CHMOV TL0,0B0HDJNZ R6,WAIT3MOV A,0CBH //南北黃燈閃爍5次 MOV P1,AMOV R6,0AHWAIT4:JNB TF0,WAIT4CLR TF0MOV TH0,3CHMOV TL0,0B0HDJNZ R6,WAIT4DEC R5DJNZ R7,LP3LJMP LOOPIN0:MOV R3,AMOV A,R7PUSH ACCMOV A,R6PUSH ACCMOV A,R5PUSH ACCMOV A,R3PUSH ACCMOV A,0ddHMOV P1,AMOV A,0c0HMOV P0,AJU:JNB INT0,JUCLR APOP ACCMOV P1,APOP ACCMOV R5,AMOV A,R3POP ACCMOV R6,AMOV A,R3POP ACCMOV R7,AMOV A,R3RETILED:MOV R2,AMOV A,0FFHMOV P0,A // lcd清屏顯示8MOV A,R2MOV A,R5MOV DPTR,TABMOVC A,A+DPTR //lcd顯示r5MOV P0,AMOV A,R2 //還原a=6cRETDELAY :MOV R5,100D1:MOV R6,100D2:MOV R7,150D3:DJNZ R7,D3DJNZ R6,D2DJNZ R5,D1
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鄂ICP備17016276號-1