基于單片機的信號產(chǎn)生電路的設-資料下載頁
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【正文】 [9] 王新賢. 通用集成電路速查手冊. 山東科學技術出版社, 2002. 31附錄1元件清單標號標注DAC0832U1LM324U2MC1403U31KR11KR21KR31KR41KR51KR61KR71KR810KR920KR1020KR111KRi電位器 10KRWC1C2Ci1Ci2Ci322UFCi410UFCi510UFCi6LEDL1LEDL2LEDL3LEDL4LEDL5AT89S52 U0 37附錄2程序清單KEY1 BIT KEY2 BIT KEY3 BIT KEY4 BIT 。按鍵KEY1:鋸齒波 按鍵KEY2:三角波 按鍵KEY3: 正弦波 。按鍵KEY4: 方波。 ORG 0000H LJMP MAIN ORG 0030HMAIN:MOV SP,50HMOV DPTR,7FFFHMOV P2,00HMOV A,00HMOVX @DPTR,ASCAN_KEY1:MOV A,P1 ANL A,0FH CJNE A,0EH,SCAN_KEY2 LJMP B1SCAN_KEY2:MOV A,P1 ANl A,0FH CJNE A,0DH,SCAN_KEY3 LJMP B2SCAN_KEY3:MOV A,P1 ANl A,0FH CJNE A,0BH,SCAN_KEY4 LJMP B3SCAN_KEY4:MOV A,P1 ANl A,0FH CJNE A,07H,SCAN_KEY1 LJMP B4。利用dac0832產(chǎn)生鋸齒波。B1:CLR SETB SETB SETB LP: MOV A,00H MOV DPTR,4000H MOVX @DPTR,A LP1: INC A MOV P2,A CJNE A,0FFH,LP1 LJMP SCAN_KEY1。利用dac0832產(chǎn)生三角波。B2: CLR SETB SETB SETB UP: MOV A,00HUP1: INC A MOV P2,A NOP NOP CJNE A,0F0H,UP1DOWN:DEC A MOV P2,A NOP NOP CJNE A,00H,DOWN LJMP SCAN_KEY2。利用dac0832產(chǎn)生正弦波。B3: MOV R1,00H 。取表格初值 。在表格里取數(shù)送到指定地址///////////////////// LOOP1:CLR SETB SETB SETB MOV A,R1 MOV DPTR,SETTAB MOVC A,@A+DPTR MOV DPTR,4000H MOVX @DPTR,A MOV P2,A INC R1。表格加一 CJNE R1,0FFH,LOOP1SETTAB: 。正弦表格///////////////////////////////////// DB 80H,83H,86H,89H,8DH,90H,93H,96H DB 99H,9CH,9FH,0A2H,0A5H,0A8H,0ABH,0AEH DB 0B1H,0B4H,0B7H,0BAH,0BCH,0BFH,0C2H,0C5H DB 0C7H,0CAH,0CCH,0CFH,0D1H, 0D4H,0D6H,0D8H DB 0DAH,0DDH,0DFH,0E1H,0E3H, 0E5H,0E7H,0E9H DB 0EAH,0ECH,0EEH,0EFH,0F1H, 0F2H,0F4H,0F5H DB 0F6H,0F7H,0F8H,0F9H,0FAH, 0FBH,0FCH,0FDH DB 0FDH,0FEH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH DB 0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FEH,0FDH DB 0FDH,0FCH,0FBH,0FAH,0F9H, 0F8H,0F7H,0F6H DB 0F5H,0F4H,0F2H,0F1H,0EFH, 0EEH,0ECH,0EAH DB 0E9H,0E7H,0E5H,0E3H,0E1H, 0DEH,0DDH,0DAH DB 0D8H,0D6H,0D4H,0D1H,0CFH, 0CCH,0CAH,0C7H DB 0C5H,0C2H,0BFH,0BCH,0BAH, 0B7H,0B4H,0B1H DB 0AEH,0ABH,0A8H,0A5H,0A2H, 9FH, 9CH, 99H DB 96H, 93H, 90H, 8DH, 89H, 86H, 83H, 80H DB 80H, 7CH, 79H, 78H, 72H, 6FH, 6CH, 69H DB 66H, 63H, 60H, 5DH, 5AH, 57H, 55H, 51H DB 4EH, 4CH, 48H, 45H, 43H, 40H, 3DH, 3AH DB 38H, 35H, 33H, 30H, 2EH, 2BH, 29H, 27H DB 25H, 22H, 20H, 1EH, 1CH, 1AH, 18H, 16H DB 15H, 13H, 11H, 10H, 0EH, 0DH, 0BH, 0AH DB 09H, 08H, 07H, 06H, 05H, 04H, 03H, 02H DB 02H, 01H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 01H, 02H DB 02H, 03H, 04H, 05H, 06H, 07H, 08H, 09H DB 0AH, 0BH, 0DH, 0EH, 10H, 11H, 13H, 15H DB 16H, 18H, 1AH, 1CH, 1EH, 20H, 22H, 25H DB 27H, 29H, 2BH, 2EH, 30H, 33H, 35H, 38H DB 3AH, 3DH, 40H, 43H, 45H, 48H, 4CH, 4EH DB 51H, 55H, 57H, 5AH, 5DH, 60H, 63H, 66H DB 69H, 6CH, 6FH, 72H, 76H, 79H, 7CH, 80H LJMP SCAN_KEY3。利用dac0832產(chǎn)生方波。B4: CLR SETB SETB SETB MOV A,0FFH MOV P2,A LCALL DELY MOV A,00H MOV P2,A LCALL DELY LJMP SCAN_KEY4DELY:MOV R6,10H MOV R7,0EDH NOPDL1:DJNZ R7,DL1DL2:DJNZ R6,DL2 RETE
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