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基于89c51的八位搶答器-單片機(jī)系統(tǒng)課程設(shè)計(jì)(參考版)

2024-11-21 21:44本頁(yè)面
  

【正文】 如果想從新計(jì)數(shù),重置TH1/TL1 就可以了 21 //查詢程序 // START: MOV DATAO,0FFH ;初始化 MOV R5,0bH MOV R4,0bH MOV R3,0bH ACALL DISPLAY ;未開(kāi)始搶答時(shí)顯示 FFF JNB ,SELSUB0 JNB ,TZ3 ;倒計(jì)時(shí)調(diào)整 JB ,NEXT ACALL DELAY JB ,NEXT ;去抖動(dòng) ,如果按下“開(kāi)始鍵” 就向下執(zhí)行,否則跳到非法搶答查詢 SETB EX0 ;開(kāi)放 INT0 ACALL BARK ;按鍵發(fā)聲 MOV A,R1 MOV R6,A ;送 R1 到 R6,因?yàn)?R1 中保存了搶答時(shí)間 SETB OK ;搶答標(biāo)志位,在使用錦囊時(shí)用作判斷是搶 答倒計(jì)時(shí)還是回答倒計(jì)時(shí) MOV R3,0AH ;搶答只顯示計(jì)時(shí),滅號(hào)數(shù) AJMP COUNT ;進(jìn)入倒計(jì)時(shí)程序,查詢有效搶答 NEXT: JNB ,FALSE1 JNB ,FALSE2 JNB ,FALSE3 JNB ,FALSE4 JNB ,FALSE5 JNB ,FALSE6 JNB ,TZ1 JNB ,TZ2 AJMP START TZ1: AJMP FALSE7 22 TZ2: AJMP FALSE8 TZ3: AJMP SELSUB1 //非法搶答處理程序 // FALSE1: MOV R3,01H AJMP ERROR FALSE2: MOV R3,02H AJMP ERROR FALSE3: MOV R3,03H AJMP ERROR FALSE4: MOV R3,04H AJMP ERROR FALSE5: MOV R3,05H AJMP ERROR FALSE6: MOV R3,06H AJMP ERROR FALSE7: MOV R3,07H AJMP ERROR FALSE8: MOV R3,08H AJMP ERROR //SELSUB0 搶答時(shí)間 R1 調(diào)整程序 // SELSUB0: MOV A,R1 MOV B,0AH DIV AB MOV R4,A MOV R5,B MOV R3,0AH ACALL DISPLAY ;先在兩個(gè)時(shí)間 LED 上顯示 R1 JNB ,INC0 ; 為 +1s,按下跳到 INC0 JNB ,DEC0 ; 為 1s,按下跳到 DEC0 JNB ,BACK0 ; 為 確定鍵,按下跳到 BACK0 23 AJMP SELSUB0 INC0: MOV A,R1 CJNE A,63H,ADD0 ;如果 R1 不是 99, R1 就加 1,如果是 99, R1 就置 0 MOV R1,00H ACALL DELAY1 AJMP SELSUB0 ADD0: INC R1 ACALL DELAY1 AJMP SELSUB0, DEC0: MOV A,R1 JZ SETR1 DEC R1 ACALL DELAY1 AJMP SELSUB0 SETR1: MOV R1,63H ACALL DELAY1 AJMP SELSUB0 BACK0: AJMP START //SELSUB1(回答時(shí)間 R2 調(diào)整程序 )// SELSUB1: MOV A,R2 MOV B,0AH DIV AB MOV R4,A MOV R5,B MOV R3,0AH ACALL DISPLAY JNB ,INC1 JNB ,DEC1 JNB ,BACK1 AJMP SELSUB1 24 INC1: MOV A,R2 CJNE A,63H,ADD1 MOV R2,00H ACALL DELAY1 AJMP SELSUB1 ADD1: INC R2 ACALL DELAY1 AJMP SELSUB1 DEC1: MOV A,R2 JZ SETR2 DEC R2 ACALL DELAY1 AJMP SELSUB1 SETR2: MOV R2,63H ACALL DELAY1 AJMP SELSUB1 BACK1: AJMP START //啟用錦囊程序 // REPEAT: MOV A,38H MOV R6,A CLR RING //倒計(jì)時(shí)程序 // COUNT: MOV R0,00H ;重置定時(shí)器中斷次數(shù) MOV TH1,3CH MOV TL1,0B0H ;重置定時(shí)器 RECOUNT: MOV A,R6 ; R6 保存了倒計(jì)時(shí)的時(shí)間 MOV B,0AH DIV AB ;除 10 分出十位和各位 MOV 30H,A ;十位存到( 30H) MOV 31H,B ;個(gè)位存到( 31H) 25 MOV R4,30H ;取十位 MOV R5,31H ;取個(gè)位 MOV A,R6 SUBB A,07H JNC LARGER ;大于 5s 跳到 LARGER,小于等于 5s 會(huì)提醒 MOV A,R0 CJNE A,0AH,FULL CLR RING AJMP CHECK FULL: CJNE A,14H,CHECK SETB RING MOV A,R6 JZ QUIT ;計(jì)時(shí) MOV R0,00H DEC R6 AJMP CHECK LARGER: MOV A,R0 CJNE A,14H,CHECK DEC R6 MOV R0,00H CHECK: JNB ,QUIT ;按下停止鍵就退出 JNB OK, CHECKK ;只有回答倒計(jì)時(shí)有效 AJMP NEXTT CHECKK: JNB ,REPEAT ;判斷是否使用錦囊 NEXTT: ACALL DISPLAY JB OK,ACCOUT AJMP RECOUNT ACCOUT: MOV A,DATAO JNB ,TRUE1 26 JNB ,TRUE2 JNB ,TRUE3 JNB ,TRUE4 JNB ,TRUE5 JNB ,TRUE6 JNB ,TZ7 JNB ,TZ8 AJMP RECOUNT TZ7: AJMP TRUE7 TZ8: AJMP TRUE8 QUIT: CLR OK CLR RING AJMP START //正常搶答處理程序 // TRUE1: ACALL BARK MOV A,R2 MOV R6,A MOV R3,01H CLR OK AJMP COUNT TRUE2: ACALL BARK MOV A,R2 MOV R6,A MOV R3,02H CLR OK AJMP COUNT TRUE3: ACALL BARK MOV A,R2 MOV R6,A MOV R3,03H 27 CLR OK AJMP COUNT TRUE4: ACALL BARK MOV A,R2 MOV R6,A MOV R3,04H CLR OK AJMP
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