單片機(jī)的dtmf遠(yuǎn)程通訊-資料下載頁
2025-06-29 12:27本頁面
【正文】 B 15H,13H,11H,10HDB 0EH,0DH,0BH,0AHDB 09H,08H,07H,06HDB 05H,04H,03H,02HDB 02H,01H,00H,00HDB 00H,00H,00H,00HDB 00H,00H,00H,00HDB 00H,00H,01H,02HDB 02H,03H,04H,05HDB 06H,07H,08H,09HDB 0AH,0BH,0DH,0EHDB 10H,11H,13H,15HDB ,1AH,1CHDB 1EH,20H,22H,25HDB 27H,29H,2BH,2EHDB 30H,33H,35H,38HDB 3AH,3DH,40H,43HDB 45H,48H,4CH,4EHDB 51H,55H,57H,5AHDB 5DH,60H,63H,66HDB 69H,6CH,6FH,72HDB 76H,79H,7CH,80HEND；產(chǎn)生DTMF信號(hào) ORG 0000H LJMP STARTSTART:MOV R0,30HMOV R1,3BHMOV R2,00HLOOP1:CJNE R0,3BH,LOOP2MOV R0,30HLOOP2:MOV A,@R0ADD A,@R1MOV DPTR,7FFFHMOVX @DPTR,ALCALL DELAYINC R0INC R1CJNE R1,42H,LOOP1INC R2MOV R1,3BHCJNE R2,122,LOOP1LJMP STARTDELAY:MOV R7,58LOOP:DJNZ R7,LOOPRETDB 47H,6DH,88H,8DHDB 7DH,5BH,33H,11HDB 07H,06H,20H,38HDB 63H,6FH,50H,20HDB 01H,0CH,00HEND；發(fā)送程序段 ORG 1000HSEND：MOV 30H，08H 。賦初值給30H～36H范圍的地址單元 MOV 31H，04H MOV 32H，07H MOV 33H，09H MOV 34H，04H MOV 35H，06H MOV 36H，02H CLR CLR CLR SETB MOV P1,0DH SETB NOP NOP CLR MOV P1,00H SETB NOP NOP CLR SETB CLR CLR CLR CLR LOOP: MOV R0,30H MOV R1,7H MOV A,@R0 MOV P1,A SETB ACALL DELAY CLR INC R0 DJNZ R1,LOOP SETB 。接收程序段 ORG 1200HRECEIVE: MOV 30H，00H 。賦初值給30H～36H范圍的地址單元MOV 31H，00HMOV 32H，00HMOV 33H，00HMOV 34H，00HMOV 35H，00HMOV 36H，00HMOV TMOD,20 。初始化定時(shí)器/計(jì)數(shù)器1作為波特率發(fā)生器MOV TL1,0FDH 。裝入初值MOV TH1,OFDHCLR ET1SETB TR1MOV SCON,40HMOV PCON,00HCLR CLR CLR SETB MOV P1,2DHSETB NOPNOPCLR MOV P1,20HSETB NOPNOPCLR SETB NOPNOPMOV R0,30HMOV R1,7H其它源程序可參照本文提到的參考文獻(xiàn)。寧可累死在路上，也不能閑死在家里！寧可去碰壁，也不能面壁。是狼就要練好牙，是羊就要練好腿。什么是奮斗？奮斗就是每天很難，可一年一年卻越來越容易。不奮斗就是每天都很容易，可一年一年越來越難。能干的人，不在情緒上計(jì)較，只在做事上認(rèn)真；無能的人！不在做事上認(rèn)真，只在情緒上計(jì)較。拼一個(gè)春夏秋冬！贏一個(gè)無悔人生！早安！—————獻(xiàn)給所有努力的人.
環(huán)評(píng)公示相關(guān)推薦
鄂ICP備17016276號(hào)-1