單片機課程八路搶答器設計(編輯修改稿)
2025-07-26 12:04 本頁面
【文章內(nèi)容簡介】 1: MOV R3,01HAJMP ERRORFALSE2: MOV R3,02HAJMP ERRORFALSE3: MOV R3,03HAJMP ERRORFALSE4: MOV R3,04HAJMP ERRORFALSE5: MOV R3,05HAJMP ERRORFALSE6: MOV R3,06HAJMP ERRORFALSE7: MOV R3,07HAJMP ERRORFALSE8: MOV R3,08HAJMP ERROR。=====INT0(搶答時間R1調(diào)整程序)=====INT0SUB:MOV A,R1MOV B,0AHDIV ABMOV R5,AMOV R4,BMOV R3,0AHACALL DISPLAY。先在兩個時間LED上顯示R1JNB ,INC0。+1s鍵,如按下跳到INCOJNB ,DEC0。,如按下跳到DECOJNB ,BACK0。,如按下跳到BACKOAJMP INT0SUBINC0: MOV A,R1CJNE A,63H,ADD0。如果不是99,R2加1,如果加到99,R1就置0，重新加起。MOV R1,00HACALL DELAY1AJMP INT0SUBADD0: INC R1ACALL DELAY1AJMP INT0SUBDEC0: MOV A,R1JZ SETR1。如果R1為0, R1就置99，DEC R1ACALL DELAY1AJMP INT0SUBSETR1: MOV R1,63HACALL DELAY1AJMP INT0SUBBACK0: RETI。=====INT1(回答時間R2調(diào)整程序)=====INT1SUB:MOV A,R2MOV B,0AHDIV ABMOV R5,AMOV R4,BMOV R3,0AHACALL DISPLAYJNB ,INC1JNB ,DEC1JNB ,BACK1AJMP INT1SUBINC1: MOV A,R2CJNE A,63H,ADD1MOV R2,00HACALL DELAY1AJMP INT1SUBADD1: INC R2ACALL DELAY1AJMP INT1SUBDEC1: MOV A,R2JZ SETR2DEC R2ACALL DELAY1AJMP INT1SUBSETR2: MOV R2,63HACALL DELAY1AJMP INT1SUBBACK1: RETI。=====倒計時程序(搶答倒計時和回答倒計時都跳到改程序)=====REPEAT:MOV A,R2 。使用錦囊時重新計時MOV R6,ACLR RINGCOUNT: MOV R0,00H。重置定時器中斷次數(shù)MOV TH1,3CHMOV TL1,0B0H。重置定時器RECOUNT:MOV A,R6。R6保存了倒計時的時間,之前先將搶答時間或回答時間給R6MOV B,0AHDIV AB。除十分出個位/十位MOV 30H,A。十位存于(30H)MOV 31H,B。個位存于(31H)MOV R5,30H。取十位MOV R4,31H。取個位MOV A,R6SUBB A,07HJNC LARGER。大于5s跳到LARGER,小于等于5s會提醒MOV A,R0CJNE A,0AH,FULL。CLR RINGAJMP CHECKFULL: CJNE A,14H,CHECK。下面是1s的情況,響并顯示號數(shù)并清R0,重新計SETB RINGMOV A,R6JZ QUIT。計時完畢MOV R0,00HDEC R6。一秒標志減1AJMP CHECKLARGER: MOV A,R0CJNE A,14H,CHECK。如果1s向下運行,否者跳到查停/顯示DEC R6。計時一秒R6自動減1MOV R0,00HCHECK: JNB ,QUIT。如按下停止鍵退出JNB OK,CHECKK 。只在回答倒計時才有效AJMP NEXTTCHECKK:JNB ,REPEAT 。判斷是否使用錦囊NEXTT: ACALL DISPLAYJB OK,ACCOUT。如果是搶答倒計時,如是則查詢搶答,否者跳過查詢繼續(xù)倒數(shù)(這里起到鎖搶答作用)AJMP RECOUNTACCOUT:MOV A,36HJNB ,TRUE1JNB ,TRUE2JNB ,TRUE3JNB ,TRUE4JNB ,TRUE5JNB ,TRUE6JNB ,TZ1JNB ,TZ2AJMP RECOUNTTZ1:JMP TRUE7TZ2:JMP TRUE8QUIT: CLR OK。如果按下了停止鍵執(zhí)行的程序CLR RINGAJMP START。=====正常搶答處理程序=====TRUE1: ACALL BARKMOV A,R2MOV R6,A。搶答時間R2送R6MOV R3,01HCLR OK。因為答題的計時不再查詢搶答,所以就鎖了搶答AJMP COUNTTRUE2:ACALL BARKMOV A,R2MOV R6,AMOV R3,02HCLR OKAJMP
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