使用0832产生正弦波求指导

只能输出方波，可以调频率，但是按键三没有反应无法输出正弦波和三角波，求指点怎么才能正确输出

1. #include "reg51.h"
   
2. #define uchar unsigned char
   
3. #define uint unsigned int
   
4. #define key P1
   
5. #define dataout P0
   
6. /**********
   
7. 正弦波数据表
   
8. *************/
   
9. uchar code sin_tab[256]=
   
10. {0x80,0x83,0x85,0x88,0x8A,0x8D,0x8F,0x92,
    
11. 0x94,0x97,0x99,0x9B,0x9E,0xA0,0xA3,0xA5,
    
12. 0xA7,0xAA,0xAC,0xAE,0xB1,0xB3,0xB5,0xB7,
    
13. 0xB9,0xBB,0xBD,0xBF,0xC1,0xC3,0xC5,0xC7,
    
14. 0xC9,0xCB,0xCC,0xCE,0xD0,0xD1,0xD3,0xD4,
    
15. 0xD6,0xD7,0xD8,0xDA,0xDB,0xDC,0xDD,0xDE,
    
16. 0xDF,0xE0,0xE1,0xE2,0xE3,0xE3,0xE4,0xE4,
    
17. 0xE5,0xE5,0xE6,0xE6,0xE7,0xE7,0xE7,0xE7,
    
18. 0xE7,0xE7,0xE7,0xE7,0xE6,0xE6,0xE5,0xE5,
    
19. 0xE4,0xE4,0xE3,0xE3,0xE2,0xE1,0xE0,0xDF,
    
20. 0xDE,0xDD,0xDC,0xDB,0xDA,0xD8,0xD7,0xD6,
    
21. 0xD4,0xD3,0xD1,0xD0,0xCE,0xCC,0xCB,0xC9,
    
22. 0xC7,0xC5,0xC3,0xC1,0xBF,0xBD,0xBB,0xB9,
    
23. 0xB7,0xB5,0xB3,0xB1,0xAE,0xAC,0xAA,0xA7,
    
24. 0xA5,0xA3,0xA0,0x9E,0x9B,0x99,0x97,0x94,
    
25. 0x92,0x8F,0x8D,0x8A,0x88,0x85,0x83,0x80,
    
26. 0x7D,0x7B,0x78,0x76,0x73,0x71,0x6E,0x6C,
    
27. 0x69,0x67,0x65,0x62,0x60,0x5D,0x5B,0x59,
    
28. 0x56,0x54,0x52,0x4F,0x4D,0x4B,0x49,0x47,
    
29. 0x45,0x43,0x41,0x3F,0x3D,0x3B,0x39,0x37,
    
30. 0x35,0x34,0x32,0x30,0x2F,0X2D,0x2C,0X2A,
    
31. 0x29,0x28,0x26,0x25,0x24,0x23,0x22,0x21,
    
32. 0x20,0x1F,0x1E,0x1D,0x1D,0x1C,0x1C,0x1B,
    
33. 0x1B,0x1A,0x1A,0x1A,0x19,0x19,0x19,0x19,
    
34. 0x19,0x19,0x19,0x19,0x1A,0x1A,0x1A,0x1B,
    
35. 0x1B,0x1C,0x1C,0x1D,0x1D,0x1E,0x1F,0x20,
    
36. 0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,
    
37. 0X2A,0x2C,0X2D,0x2F,0x30,0x32,0x34,0x35,
    
38. 0x37,0x39,0x3B,0x3D,0x3F,0x41,0x43,0x45,
    
39. 0x47,0x49,0x4B,0x4D,0x4F,0x52,0x54,0x56,
    
40. 0x59,0x5B,0x5D,0x60,0x62,0x65,0x67,0x69,
    
41. 0x6C,0x6E,0x71,0x73,0x76,0x78,0x7B,0x7D};
    
42. /*************
    
43. 三角波数据表
    
44. *************************/
    
45. uchar code thr_tab[256]=
    
46. {
    
47. 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
    
48. 0x89,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,
    
49. 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
    
50. 0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F,
    
51. 0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,
    
52. 0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,
    
53. 0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,
    
54. 0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,
    
55. 0xBF,0xBE,0xBD,0xBC,0xBB,0xBA,0xB9,0xB8,
    
56. 0xB7,0xB6,0xB5,0xB4,0xB3,0xB2,0xB1,0xB0,
    
57. 0xAF,0xAE,0xAD,0xAC,0xAB,0xAA,0xA9,0xA8,
    
58. 0xA7,0xA6,0xA5,0xA4,0xA3,0xA2,0xA1,0xA0,
    
59. 0x9F,0x9E,0x9D,0x9C,0x9B,0x9A,0x99,0x98,
    
60. 0x97,0x96,0x95,0x94,0x93,0x92,0x91,0x90,
    
61. 0x8F,0x8E,0x8D,0x8C,0x8B,0x8A,0x89,0x89,
    
62. 0x87,0x86,0x85,0x84,0x83,0x82,0x81,0x80,
    
63. 0x7F,0x7E,0x7D,0x7C,0x7B,0x7A,0x79,0x78,
    
64. 0x77,0x76,0x75,0x74,0x73,0x72,0x71,0x70,
    
65. 0x6F,0x6E,0x6D,0x6C,0x6B,0x6A,0x69,0x68,
    
66. 0x66,0x66,0x65,0x64,0x63,0x62,0x61,0x60,
    
67. 0x5F,0x5E,0x5D,0x5C,0x5B,0x5A,0x59,0x58,
    
68. 0x55,0x55,0x55,0x54,0x53,0x52,0x51,0x50,
    
69. 0x4F,0x4E,0x4D,0x4C,0x4B,0x4A,0x49,0x48,
    
70. 0x44,0x44,0x45,0x44,0x43,0x42,0x41,0x40,
    
71. 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,
    
72. 0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,
    
73. 0x50,0x51,0x52,0x53,0x55,0x55,0x56,0x57,
    
74. 0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,
    
75. 0x60,0x61,0x62,0x63,0x66,0x65,0x66,0x67,
    
76. 0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
    
77. 0x70,0x71,0x72,0x73,0x77,0x75,0x76,0x77,
    
78. 0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x7F
    
79. };
    
80. /******************************************/
    
81. uint data THHL=65535;
    
82. uchar data keyword,n=0;
    
83. bdata sinthr;
    
84. sbit sin_thr=sinthr^0;
    
85. sbit fb=P2^1;
    
86. /**************
    
87. 键扫描子函数
    
88. **************************/
    
89. keyscan()
    
90. {
    
91. keyword=key&0x07;
    
92. if(keyword!=0x07)
    
93. {
    
94. while((key&0x07)!=0x07);
    
95. switch(keyword)
    
96. {
    
97. case 6:
    
98. {if(THHL>=65235)THHL=65535;else{THHL=THHL+255;}break;}
    
99. case 5:
    
100. {if(THHL<=500)THHL=0;else{THHL=THHL-255;}break;}
     
101. case 3:
     
102. {sin_thr=~sin_thr;break;}
     
103. default:{break;}
     
104. }
     
105. }
     
106. }
     
107. /**********
     
108. 初始化函数
     
109. **************************/
     
110. void clearmen()
     
111. {
     
112. key=0xff,dataout=0x00;THHL=65535;
     
113. TH1=THHL/256;TL1=THHL&256;
     
114. TMOD=0x11;ET1=1;TR1=1;EA=1;
     
115. }
     
116. /***********
     
117. 主函数
     
118. *************************/
     
119. main()
     
120. {
     
121. clearmen();
     
122. while(1)
     
123. {
     
124. keyscan();
     
125. }
     
126. }
     
127. /************T1
     
128. 中断函数
     
129. *************************/
     
130. void time_intt1(void) interrupt   3
     
131. {
     
132. EA=0;TR1=0;TH1=THHL/256;TL1=THHL%256;TR1=1;
     
133. if(sin_thr){dataout=sin_tab[n];}
     
134. else {dataout=thr_tab[n];}
     
135. if(n>=255){n=0;}else{n++;}
     
136. fb=~fb;
     
137. EA=1;
     
138. }
     
139. 
     

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有人吗

来人啊

来个人啊

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楼主能保证你的硬件正确吗？

定时从正弦数据表中取出数据送至0832就可以了。
要点：数据表中的数据必须是按正弦波形分布。

cjjcjj1 发表于 2017-6-16 12:52
你好！你发的程序不完整吧

完整的啊

付个电路图啊

发完整程序还有硬件看看