用单片机产生正弦波程序培训资料.doc

用单片机产生正弦波程序精品资料用单片机产生正弦波程序要用到数模转换DAC0832 MOV DPTR,#SINTAB ;正弦表写入内部RAM6DH-7FH MOV R0,#6DHLOOP: CLR A MOVC A,A+DPTR MOV R0,A INC DPTR INC R0 CJNE R0,#80H,LOOP MOV DPTR,#7FFFH ;设置D/A转换器的端口地址 MOV R0,#6DH ;设置正弦表指针LOOP1: MOV A,R0 ;查表 MOVX DPTR,A ;D/A转换 ACALL DELAY ;延时，等待转换结束 DEC R0 ;正弦表位移量增量 CJNE R0, #6DH,LOOP1 ;第一象限输出完？LOOP2: MOV A,R0 ;查表 MOVX DPTR,A ;D/A转换 acall DELAY ;延时，等待转换结束 DEC R0 ;正弦表位移量减量 CJNE R0, #6DH,LOOP2 ;第二象限输出完？LOOP3: MOV A,R0 ;查表 CPL A ;表值取反 MOVX DPTR,A ;D/A转换 ACALL DELAY ;延时，等待转换结束 INC R0 ;正弦表位移量增量 CJNE R0,#7FH,LOOP3 ;第三象限输出完？LOOP4:MOV A,R0 ;查表 CPL A ;表值取反 MOVX DPTR,A ;D/A转换 ACALL DELAY ;延时，等待转换结束 DEC R0 ;正弦表位移量减量 CJNE R0,#6DH,LOOP4 ;第四象限输出完？ SJMP LOOP1DELAY:MOV R7,#200 ; 延时50msDEL1:MOV R6,#123 NOPDEL2：JNZ R6,DEL2 DJNZ R7,DEL1 RETSINTAB:DB 80H,83H,86H,89H,8DH,90H,93H,96HDB 99H,9CH,9FH,0A2H,0A5H,0A8H,0ABH,0AEHDB 0B1H,0B4H,0B7H,0BAH,0BCH,0BFH,0C2H,0C5HDB 0C7H,0CAH,0CCH,0CFH,0D1H, 0D4H,0D6H,0D8HDB 0DAH,0DDH,0DFH,0E1H,0E3H, 0E5H,0E7H,0E9HDB 0EAH,0ECH,0EEH,0EFH,0F1H, 0F2H,0F4H,0F5HDB 0F6H,0F7H,0F8H,0F9H,0FAH, 0FBH,0FCH,0FDHDB 0FDH,0FEH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFHDB 0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FEH,0FDHDB 0FDH,0FCH,0FBH,0FAH,0F9H, 0F8H,0F7H,0F6HDB 0F5H,0F4H,0F2H,0F1H,0EFH, 0EEH,0ECH,0EAHDB 0E9H,0E7H,0E5H,0E3H,0E1H, 0DEH,0DDH,0DAHDB 0D8H,0D6H,0D4H,0D1H,0CFH, 0CCH,0CAH,0C7HDB 0C5H,0C2H,0BFH,0BCH,0BAH, 0B7H,0B4H,0B1HDB 0AEH,0ABH,0A8H,0A5H,0A2H, 9FH, 9CH, 99HDB 96H, 93H, 90H, 8DH, 89H, 86H, 83H, 80HDB 80H, 7CH, 79H, 78H, 72H, 6FH, 6CH, 69HDB 66H, 63H, 60H, 5DH, 5AH, 57H, 55H, 51HDB 4EH, 4CH, 48H, 45H, 43H, 40H, 3DH, 3AHDB 38H, 35H, 33H, 30H, 2EH, 2BH, 29H, 27HDB 25H, 22H, 20H, 1EH, 1CH, 1AH, 18H, 16HDB 15H, 13H, 11H, 10H, 0EH, 0DH, 0BH, 0AHDB 09H, 08H, 07H, 06H, 05H, 04H, 03H, 02HDB 02H, 01H, 00H, 00H, 00H, 00H, 00H, 00HDB 00H, 00H, 00H, 00H, 00H, 00H, 01H, 02HDB 02H, 03H, 04H, 05H, 06H, 07H, 08H, 09HDB 0AH, 0BH, 0DH, 0EH, 10H, 11H, 13H, 15HDB 16H, 18H, 1AH, 1CH, 1EH, 20H, 22H, 25HDB 27H, 29H, 2BH, 2EH, 30H, 33H, 35H, 38HDB 3AH, 3DH, 40H, 43H, 45H, 48H, 4CH, 4EHDB 51H, 55H, 57H, 5AH, 5DH, 60H, 63H, 66HDB 69H, 6CH, 6FH, 72H, 76H, 79H, 7CH, 80HEND仅供学习与交流，如有侵权请联系网站删除 谢谢3