八路數(shù)字搶答器微機(jī)原理及接口技術(shù)課程設(shè)計(jì)-資料下載頁
2025-01-18 13:54本頁面
【正文】 。計(jì)時(shí)一秒R6自動(dòng)減1 MOV R0,00HCHECK:JNB ,QUIT。如按下停止鍵退出 JNB OK,CHECKK。只在回答倒計(jì)時(shí)才有效 AJMP NEXTTCHECKK:JNB ,REPEAT。判斷是否使用錦囊NEXTT:ACALL DISPLAY JB OK,ACOUNT。如果是搶答倒計(jì)時(shí)，如是則查詢搶答，否則跳過查詢繼續(xù)倒數(shù)（這里起到鎖搶答作用） AJMP RECOUNTACOUNT:MOV A,36H JNB ,TRUE1 JNB ,TRUE2 JNB ,TRUE3 JNB ,TRUE4 JNB ,TRUE5 JNB ,TRUE6 JNB ,TZ1 JNB ,TZ2 AJMP RECOUNTTZ1:JMP TRUE7TZ2:JMP TRUE8QUIT:CLR OK。如果按下了“停止”執(zhí)行的程序 CLR RING AJMP START。=====正常搶答處理程序=======TRUE1:ACALL BARK MOV A,R2 MOV R6,A。搶答時(shí)間R2送R6 MOV R3,01H CLR OK。因?yàn)榇痤}的計(jì)時(shí)不在查詢搶答，所以就鎖了搶答 AJMP COUNTTRUE2:ACALL BARK MOV A,R2 MOV R6,A MOV R3,02H CLR OK AJMP COUNTTRUE3:ACALL BARK MOV A,R2 MOV R6,A MOV R3,03H CLR OK AJMP COUNTTRUE4:ACALL BARK MOV A,R2 MOV R6,A MOV R3,04H CLR OK AJMP COUNTTRUE5:ACALL BARK MOV A,R2 MOV R6,A MOV R3,05H CLR OK AJMP COUNTTRUE6:ACALL BARK MOV A,R2 MOV R6,A MOV R3,06H CLR OK AJMP COUNTTRUE7:ACALL BARK MOV A,R2 MOV R6,A MOV R3,07H CLR OK AJMP COUNTTRUE8:ACALL BARK MOV A,R2 MOV R6,A MOV R3,08H CLR OK AJMP COUNT。=====犯規(guī)搶答程序=========ERROR:MOV R0,00H MOV TH1,3CH MOV TL1,0B0H MOV 34H,R3。犯規(guī)號(hào)數(shù)暫存與（34H)HERE:MOV A,R0 CJNE A,06H,FLASH。滅并停響 CLR RING MOV R3,0AH MOV R4,0AH MOV R5,0AH。三燈全滅 AJMP CHECK1FLASH:CJNE A,0CH,CHECK1。，響并顯示號(hào)數(shù)并清R0，重新計(jì) SETB RING MOV R0,00H MOV R3,34H。取回號(hào)數(shù) MOV R5,0BH MOV R4,0BH。顯示FF和號(hào)數(shù) AJMP CHECK1CHECK1:JNB ,QUIT ACALL DISPLAY AJMP HEREQUIT1:CLR RING CLR OK AJMP START。=====顯示程序=====DISPLAY:MOV DPTR,DAT1。查表顯示程序，利用P0口做段選碼輸出/P2低三位做位選嗎輸出MOV A,R3MOVC A,@A+DPTRMOV P2,0FEHMOV P0,AACALL DELAY2MOV DPTR,DAT2MOV A,R5MOVC A,@A+DPTRMOV P2,0FDHMOV P0,AACALL DELAY2MOV A,R4MOVC A,@A+DPTRMOV P2,0FBHMOV P0,AACALL DELAY2RETDAT1:DB 00H,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,00H,71H。滅、滅、FDAT2:DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,00H,71H。0、滅、F。======加減時(shí)間延時(shí)（起到不會(huì)按下就加N個(gè)數(shù)）=====DELAY1:MOV 35H,08HLOOP0:ACALL DISPLAY DJNZ 35H,LOOP0RET。======延時(shí)4236個(gè)機(jī)器周期（去抖動(dòng)用到）=====DELAY:MOV 32H,12HLOOP:MOV 33H,0AFHLOOP1:DJNZ 33H,LOOP1 DJNZ 32H,LOOPRET。======延時(shí)4236個(gè)機(jī)器周期（顯示用到）=======DELAY2:MOV 32H,43HLOOP3:MOV 33H,1EH MOV A,R7。每隔60~70個(gè)機(jī)器周期讀一次P1口，全為1時(shí)為無效數(shù)據(jù)，繼續(xù)讀，有一個(gè)不為1時(shí)，轉(zhuǎn)到正常強(qiáng)大處理 JNZ AAAA1。沒讀到有效數(shù)據(jù)時(shí)繼續(xù)轉(zhuǎn)到AAAA1LOOP2:DJNZ 33H,LOOP2 DJNZ 32H,LOOP3RET。=======讀搶答按鍵數(shù)據(jù)口程序========。由于在度搶答數(shù)據(jù)口的時(shí)候，單片機(jī)首先進(jìn)入倒計(jì)時(shí)程序，再調(diào)用顯示程序，最后哎檢測(cè)安檢口。然而在檢測(cè)安檢口時(shí)動(dòng)態(tài)掃描要調(diào)用三次（4MS）延時(shí)程序。這樣就會(huì)導(dǎo)致讀數(shù)據(jù)口出現(xiàn)滯后，造成1號(hào)優(yōu)先最高，8號(hào)最低。故采用在延時(shí)子程序中加了讀數(shù)據(jù)口程序，保證了靈敏度和可靠性AAAA1:MOV A,P1 CJNE A,0FFH,AA1。 當(dāng)不全為1時(shí)的數(shù)據(jù)為有效數(shù)據(jù)AA0:MOV 36H,A。將有效數(shù)據(jù)送到36H暫存 AJMP LOOP2AA1:DEC R7 AJMP AA0。=====發(fā)聲程序======BARK:SETB RING ACALL DELAY1 ACALL DELAY1 CLR RING。按鍵發(fā)聲RET。=====T0溢出中斷（響鈴程序）======T0INT:MOV TH0,0ECH MOV TL0,0FFH JNB RING,OUT CPL 。OUT:RETI。=====T1溢出中斷（計(jì)時(shí)程序）======T1INT:MOV TH1,3CH MOV TL1,0B0H INC R0RETIEND36
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