基于單片機(jī)的籃球計(jì)時(shí)計(jì)分器設(shè)計(jì)畢業(yè)設(shè)計(jì)論文-資料下載頁
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【正文】 。顯示秒鐘十位MOV P1,42HNOPNOPSETB CLR 。顯示秒鐘個(gè)位MOV P1,43HNOPNOPSETB SETB 。點(diǎn)亮計(jì)時(shí)指示燈MOV TMOD,01H 。定時(shí)中斷初始化MOV TL0,0B0H 。送定時(shí)初值MOV TH0,3CHSETB ET0 。開放定時(shí)中斷SETB EX1 。開放外部中斷CLR IT0 。外部中斷低電平有效SETB TR0 。啟動定時(shí)MOV R0,14HSJMP $CTCO: JNB ,LK8 。定時(shí)中斷程序DJNZ R0,NEXT 。一秒鐘到了嗎?MOV R0,14HDEC 43HCLR 。顯示時(shí)間MOV P1,43H 。顯示秒鐘個(gè)位NOPNOPSETB CLR 。顯示秒鐘十位MOV P1,42HNOPNOPSETB CLR 。顯示分鐘個(gè)位MOV P1,41HNOPNOPSETB CLR 。顯示分鐘十位MOV P1,40HNOPNOPSETB MOV A,43HCJNE A,00H,NEXT 。秒鐘個(gè)位回到0沒有MOV 43H,0AH 。秒鐘個(gè)位送初值10MOV A,42HCJNE A,00H,LP3 。秒鐘十位回到0沒有MOV 42H,05H 。秒鐘十位送初值5MOV A,41HCJNE A,00H,LP2 。分種個(gè)位回到0沒有MOV 41H,09H 。分鐘個(gè)位送初值9MOV A,40HCJNE A,00H,LP1 。分鐘十位回到0沒有CLR CLR 。時(shí)間到發(fā)出警備10SACALL D10SSETB KP11: JB ,KP11 。等待交換AJMP KP12 。去兩隊(duì)分?jǐn)?shù)交換程序 LK8: ACALL D10MS JB ,CTCO 。計(jì)時(shí)暫停處理CLR LK9: JNB ,LK9 。等待鍵按下LK10: JB ,LK10 。等待鍵放開SETB 。繼續(xù)計(jì)時(shí)AJMP CTCOLP3: DEC 42H 。將秒鐘十位減1 AJMP NEXTLP1: DEC 40H 。將分鐘十位減1AJMP NEXTLP2: DEC 41H 。將分鐘個(gè)位減1NEXT: MOV TL0,0B0H 。定時(shí)中斷送初值返回MOV TH0,3CHRETIKP12: MOV A,33H 。甲乙兩隊(duì)交換分?jǐn)?shù)XCH A,36H MOV 33H,AMOV A,34HXCH A,37HMOV 34H,AMOV A,35HXCH A,38HMOV 35H,AAJMP mp 。返回顯示交換后的分?jǐn)?shù)CXT: JNB ,KP1 。甲隊(duì)+1JNB ,KP2 。甲隊(duì)1JNB ,KP3 。乙隊(duì)+1JNB ,KP4 。乙隊(duì)1AJMP KPKP1: 。甲隊(duì)+1程序MOV A,36HCJNE A,0AH,KP5MOV 36H,00HINC 37HMOV A,37HCJNE A,0AH,KP5MOV 37H,00HINC 38HAJMP KP5KP2: MOV A,36H 。甲隊(duì)1程序CJNE A,00H,AP1MOV 36H,09HDEC 37HAJMP KP5AP1: DEC 36HAJMP KP5KP3: INC 33H 。乙隊(duì)+1程序MOV A,33HCJNE A,0AH,KP5MOV 33H,00HINC 34HMOV A,34HCJNE A,0AH,KP5MOV A,34HCJNE A, 0AH,KP5MOV 34H,00HINC 35HAJMP KP5KP4: MOV A,33H 。乙隊(duì)1程序CJNE A,00H,AP2MOV 34H,09HDEC 35HAJMP KP5AP2: DEC 34HKP5: CLR 。顯示分?jǐn)?shù)MOV R1,33HMOV R2,06HLP6: MOV A,@R1MOV DPTR,TAB 。查找顯示數(shù)據(jù)MOVC A,@A+DPTRMOV SBUF,A 。通過串行口發(fā)送顯示JNB TI,$ 。串行口是否發(fā)送完畢CLR TI 。串行口標(biāo)志清0INC R1DJNZ R2,Lp6 。6次是否發(fā)送完畢SETB KP6: JNB ,KP6KP: RETITAB: DB 3FH, 06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,00H 。顯示字D10S: MOV 50H,05H 。延時(shí)程序10SD2S: MOV R3,0AH 。延時(shí)程序2SD200MS: MOV R7,14HD10MS: MOV R6,05HLOOP3: MOV R5,0F9HNOPNOPLOOP2: DJNZ R5,LOOP2DJNZ R6,LOOP3DJNZ R7,D10MSDJNZ R3,D200MSDJNZ 50H,D2SEND系統(tǒng)總體電路
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