搶答器原版匯編程序

1、OK EQU 20H;搶答開始標志位RING EQU 22H;響鈴標志位ORG 0000HAJMP MAINORG 0003HAJMP INT0SUBORG 000BHAJMP T0INTORG 0013HAJMP INT1SUBORG 001BHAJMP T1INTORG 0040HMAIN: MOV R1,#30;初設搶答時間為30sMOV R2,#60;初設答題時間為60sMOV TMOD,#11H;設置未定時器/模式1MOV TH0,#0F0HMOV TL0,#0FFH;越高發(fā)聲頻率越高,越尖MOV TH1,#3CHMOV TL1,#0B0H;50ms為一次溢出中斷SETB EASET

2、B ET0SETB ET1SETB EX0SETB EX1;允許四個中斷,T0/T1/INT0/INT1CLR OKCLR RINGSETB TR1SETB TR0;一開始就運行定時器,以開始顯示FFF.如果想重新計數,重置TH1/TL1就可以了;=查詢程序=START: MOV R5,#0BHMOV R4,#0BHMOV R3,#0BHACALL DISPLAY;未開始搶答時候顯示FFFJB P3.0,NEXT;dddddddACALL DELAYJB P3.0,NEXT;去抖動,如果"開始鍵"按下就向下執(zhí)行,否者跳到非法搶答查詢ACALL BARK;按鍵發(fā)聲MOV A,

3、R1MOV R6,A;送R1->R6,因為R1中保存了搶答時間SETB OK;搶答標志位,用于COUNT只程序中判斷是否查詢搶答MOV R7,#01H ;讀搶答鍵數據信號標志，這里表示只讀一次有用信號MOV R3,#0AH;搶答只顯示計時,滅號數AJMP COUNT;進入倒計時程序,"查詢有效搶答的程序"在COUNT里面NEXT: JNB P1.0,FALSE1JNB P1.1,FALSE2JNB P1.2,FALSE3JNB P1.3,FALSE4JNB P1.4,FALSE5JNB P1.5,FALSE6JNB P1.6,FALSE7JNB P1.7,FALSE8

4、AJMP START;=非法搶答處理程序=FALSE1: 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調整程序)=INT0SUB:MOV A,R1MOV B,#0AHDI

5、V ABMOV R5,AMOV R4,BMOV R3,#0AHACALL DISPLAY;先在兩個時間LED上顯示R1JNB P3.4,INC0;P3.4為+1s鍵,如按下跳到INCOJNB P3.5,DEC0;P3.5為-1s鍵,如按下跳到DECOJNB P3.1,BACK0;P3.1為確定鍵,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 INT0

6、SUBDEC0: 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調整程序)=INT1SUB:MOV A,R2MOV B,#0AHDIV ABMOV R5,AMOV R4,BMOV R3,#0AHACALL DISPLAYJNB P3.4,INC1JNB P3.5,DEC1JNB P3.1,BACK1AJMP INT1SUBINC1: MOV A,R2CJNE A,#63H,ADD1MOV

7、 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MOV TH1,#3CHMOV TL1,#0B0H;重置定時

8、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;1s中0.5s向下運行CLR RINGAJMP CHECKFULL: CJNE A,#14H,CHECK;下面是1s的情況,響并顯示號數并清R0,重新計SETB RING

9、MOV 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 P3.1,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 P3.0,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)

10、倒數(這里起到鎖搶答作用)AJMP RECOUNTACCOUT:MOV A,36HJNB ACC.0,TRUE1JNB ACC.1,TRUE2JNB ACC.2,TRUE3JNB ACC.3,TRUE4JNB ACC.4,TRUE5JNB ACC.5,TRUE6JNB ACC.6,TZ1JNB ACC.7,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

11、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 COUNTTRUE3:ACALL BARKMOV A,R2MOV R6,AMOV R3,#03HCLR OKAJMP COUNTTRUE4:ACALL BARKMOV A,R2MOV R6,AMOV R3,#04HCLR OKAJMP COUNTTRUE5:ACALL BARKMOV A,R2MOV R6,AMOV R3,#05HCLR OKAJMP COUNTTRUE6: ACA

12、LL BARKMOV A,R2MOV R6,AMOV R3,#06HCLR OKAJMP COUNTTRUE7:ACALL BARKMOV A,R2MOV R6,AMOV R3,#07HCLR OKAJMP COUNTTRUE8:ACALL BARKMOV A,R2MOV R6,AMOV R3,#08HCLR OKAJMP COUNT;=犯規(guī)搶答程序=ERROR: MOV R0,#00HMOV TH1,#3CHMOV TL1,#0B0HMOV 34H,R3;犯規(guī)號數暫存與(34H)HERE: MOV A,R0CJNE A,#06H,FLASH;0.3s向下運行->滅并停響CLR RING

13、MOV R3,#0AHMOV R4,#0AHMOV R5,#0AH;三燈全滅AJMP CHECK1FLASH: CJNE A,#0CH,CHECK1;下面是0.8s的情況,響并顯示號數并清R0,重新計SETB RINGMOV R0,#00HMOV R3,34H;取回號數MOV R5,#0BHMOV R4,#0BH;顯示FF和號數AJMP CHECK1CHECK1: JNB P3.1,QUIT1ACALL DISPLAYAJMP HEREQUIT1: CLR RINGCLR OKAJMP START;=顯示程序=DISPLAY:MOV DPTR,#DAT1;查表顯示程序,利用P0口做段選碼口輸出

14、/P2低三位做位選碼輸出,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","1","2","3"

15、,"4","5","6","7","8","9","滅","F"DAT2:DB 3fh,06h,5bh,4fh,66h,6dh,7dh,07h,7fh,6fh,00H,71H;第一個為零,其他與上相同,因為十位如果為零顯示熄滅;=加減時間延時(起到不會按下就加N個數)=DELAY1: MOV 35H,#08HLOOP0: ACALL DISPLAYDJNZ 35H,LOOP0RET;=延時4236個機器周期(去抖動用到)=DELAY:

16、MOV 32H,#12HLOOP: MOV 33H,#0AFHLOOP1: DJNZ 33H,LOOP1DJNZ 32H,LOOPRET;=延時4236個機器周期(顯示用到)=DELAY2: MOV 32H,#43HLOOP3: MOV 33H,#1EHMOV A,R7 ;每隔6070個機器周期讀一次P1口,全為1時為無效數據,繼續(xù)讀,有一個不為1時,轉到正常搶答處理JNZ AAAA1 ;沒讀到有效數據時繼續(xù)轉到AAAA1LOOP2: DJNZ 33H,LOOP2DJNZ 32H,LOOP3RET;=讀搶答按鍵數據口程序=;由于在讀搶答數據口的時候，單片機首先進入倒計時程序，再調用顯示程序，最后才檢測按鍵口;然而在檢測按鍵口時動態(tài)掃描要調用三次(4ms)延時程序.這樣就會導致讀數據口出現滯后,造成1號優(yōu)先最高.8號最低.;故采用在延時子程序中加了讀數據口程序.保證了靈敏度和可靠性AAAA1: MOV A,P1CJNE A,#0FFH,AA1 ;當不全為1時的數據為有效數據AA0: MOV 36H,A ;將有效數據送到36H暫存A