基于單片機(jī)實(shí)現(xiàn)遠(yuǎn)距離dtmf通訊設(shè)計(jì)-閱讀頁(yè)
2024-12-07 21:34本頁(yè)面
【正文】 PTRMOV DPTR,7FFFHMOVX DPTR,AINC R0DJNZ R5,LOOPAJMP MAINTAB: DB 80H,83H,86H,89H 產(chǎn)生正弦波程序DB 8DH,90H,93H,96HDB 99H,9CH,9FH,A2HDB A5H,A8H,ABH,AEHDB B1H,B4H,B7H,BAHDB BCH,BFH,C2H,C5HDB C7H,CAH,CCH,CFHDB D1H,D4H,D6H,D8HDB DAH,DDH,DFH,E1HDB E3H,E5H,E7H,E9HDB EAH,ECH,EEH,EFHDB F1H,F2H,F4H,F5HDB F6H,F7H,F8H,F9HDB FAH,FBH,FCH,FDHDB FDH,FEH,FFH,FFHDB FFH,FFH,FFH,FFHDB FFH,FFH,FFH,FFHDB FFH,FFH,FEH,FEHDB FDH,FCH,FBH,FAHDB F9H,F8H,F7H,F6HDB F5H,F4H,F2H,F1HDB EFH,EEH,ECH,EAHDB E9H,E7H,E5H,E3HDB E1H,DEH,DDH,DAHDB D8H,D6H,D4H,D1HDB CFH,CCH,CAH,C7HDB C5H,C2H,BFH,BCHDB BAH,B7H,B4H,B1HDB AEH,ABH,A8H,A5HDB A2H,9FH,9CH,99HDB 96H,93H,90H,8DHDB 89H,86H,83H,80HDB 80H,7CH,79H,76HDB 72H,6FH,6CH,69HDB 66H,63H,60H,5DHDB 5AH,57H,55H,51HDB 4EH,4CH,48H,45HDB 43H,40H,3DH,3AHDB 38H,35H,33H,30HDB 2EH,2BH,29H,27HDB 25H,22H,20H,1EHDB ,18H,16HDB 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 。接收程序段 ORG 1200HRECEIVE: MOV 30H，00H 。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 。
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