标题: 简易信号发生器设计+单片机源代码+仿真 [打印本页]
作者: l51black    时间: 2019-7-31 19:42
标题: 简易信号发生器设计+单片机源代码+仿真
实现三角波，方波，正弦，锯齿波的切换，这个切换通过拨码开关切换
1.正弦波


2.三角波



不说了    看仿真和源代码

  2. #include<reg52.h>
  3. #include<absacc.h>

  5. #define DAC0832 XBYTE[0x0fff]

  7. float code table2[]={
  8.        0x80,0x83,0x85,0x88,0x8A,0x8D,0x8F,0x92,
  9.        0x94,0x97,0x99,0x9B,0x9E,0xA0,0xA3,0xA5,
  10.        0xA7,0xAA,0xAC,0xAE,0xB1,0xB3,0xB5,0xB7,
  11.        0xB9,0xBB,0xBD,0xBF,0xC1,0xC3,0xC5,0xC7,
  12.        0xC9,0xCB,0xCC,0xCE,0xD0,0xD1,0xD3,0xD4,
  13.        0xD6,0xD7,0xD8,0xDA,0xDB,0xDC,0xDD,0xDE,
  14.        0xDF,0xE0,0xE1,0xE2,0xE3,0xE3,0xE4,0xE4,
  15.        0xE5,0xE5,0xE6,0xE6,0xE7,0xE7,0xE7,0xE7,
  16.        0xE7,0xE7,0xE7,0xE7,0xE6,0xE6,0xE5,0xE5,
  17.        0xE4,0xE4,0xE3,0xE3,0xE2,0xE1,0xE0,0xDF,
  18.        0xDE,0xDD,0xDC,0xDB,0xDA,0xD8,0xD7,0xD6,
  19.        0xD4,0xD3,0xD1,0xD0,0xCE,0xCC,0xCB,0xC9,
  20.        0xC7,0xC5,0xC3,0xC1,0xBF,0xBD,0xBB,0xB9,
  21.        0xB7,0xB5,0xB3,0xB1,0xAE,0xAC,0xAA,0xA7,
  22.        0xA5,0xA3,0xA0,0x9E,0x9B,0x99,0x97,0x94,
  23.        0x92,0x8F,0x8D,0x8A,0x88,0x85,0x83,0x80,
  24.        0x7D,0x7B,0x78,0x76,0x73,0x71,0x6E,0x6C,
  25.        0x69,0x67,0x65,0x62,0x60,0x5D,0x5B,0x59,
  26.        0x56,0x54,0x52,0x4F,0x4D,0x4B,0x49,0x47,
  27.        0x45,0x43,0x41,0x3F,0x3D,0x3B,0x39,0x37,
  28.        0x35,0x34,0x32,0x30,0x2F,0x2D,0x2C,0x2A,
  29.        0x29,0x28,0x26,0x25,0x24,0x23,0x22,0x21,
  30.        0x20,0x1F,0x1E,0x1D,0x1D,0x1C,0x1C,0x1B,
  31.        0x1B,0x1A,0x1A,0x1A,0x19,0x19,0x19,0x19,
  32.        0x19,0x19,0x19,0x19,0x1A,0x1A,0x1A,0x1B,
  33.        0x1B,0x1C,0x1C,0x1D,0x1D,0x1E,0x1F,0x20,
  34.        0x21,0x22,0x23,0x24,0x25,0x26,0x28,0x29,
  35.        0x2A,0x2C,0x2D,0x2F,0x30,0x32,0x34,0x35,
  36.        0x37,0x39,0x3B,0x3D,0x3F,0x41,0x43,0x45,
  37.        0x47,0x49,0x4B,0x4D,0x4F,0x52,0x54,0x56,
  38.        0x59,0x5B,0x5D,0x60,0x62,0x65,0x67,0x69,
  39.        0x6C,0x6E,0x71,0x73,0x76,0x78,0x7B,0x7D};

  41. void delay(unsigned int i)//延时函数
  42. {
  43.         while(i--);
  44. }

  46. void fang()//方波
  47. {               
  48.                 DAC0832=0;
  49.                 delay(15);

  51.                 DAC0832=0xff;
  52.                 delay(15);
  53.                
  54. }

  56. void jvchi()//锯齿波
  57. {
  58.         unsigned char i;       
  59.                 for(i=0;i<255;i++)
  60.                                 {
  61.                                         DAC0832=i;
  62.                                 //        delay(10);
  63.                                 }
  64.                
  65. }

  67. void tran()//三角波
  68. {
  69.         unsigned char i;
  70.         for(i=0;i<255;i++)
  71.                 {
  72.                         DAC0832=i;
  73.         //                delay(10);
  74.                 }
  75.         for(i=255;i>0;i--)
  76.                 {
  77.                         DAC0832=i;
  78.                 //        delay(10);
  79.                 }
  80. }

  82. void sin()//正弦波
  83. {
  84.         unsigned int i;
  85.         for(i=0;i<256;i++)
  86.                 {
  87.                         DAC0832=table2[i];
  88.                 //        delay(10);
  89.                 }

  91. }

  93. void main(void)//主函数
  94. {       
  95.                 while(1)
  96.                 {
  97.                         if(P1==0xfe)fang();
  98.                         if(P1==0xfd)jvchi();
  99.                         if(P1==0xfb)tran();
  100.                         if(P1==0xf7)sin();
  101.                         if(P1==0xff)DAC0832=0;
  102.               }
  103.                
  104. }
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作者: 鹏博士PBs    时间: 2019-8-1 10:35
类似于示波器的功能吧
作者: l51black    时间: 2019-8-1 13:59
鹏博士PBs 发表于 2019-8-1 10:35
类似于示波器的功能吧

这是信号发生器  是输入信号的   示波器是输出设备
作者: 34312W2E    时间: 2019-11-11 19:59
请问里面包含有显示器显示频率啥的么



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