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標(biāo)題: 單片機信號發(fā)生器程序 [打印本頁]

作者: 炭疽123 時間: 2018-12-26 11:49
標(biāo)題: 單片機信號發(fā)生器程序
#include <reg51.h>
sbit dac_cs = P2^0;                //這是dac0832的控制端
sbit sanj = P3^7;                         //這是一個按鈕
sbit zhengx = P3^6;                      //這是一個按鈕
sbit juc = P3^5;                //這是一個按鈕
int san = 0;                         //三角波的控制產(chǎn)生端
int ju = 0;                                           //鋸齒波的控制產(chǎn)生端
int zheng = 0;                               //正弦波的控制產(chǎn)生端
unsigned char value = 0;                //這是一個全局變量
unsigned char code SineData[256]={
0x7F,0x82,0x85,0x88,0x8B,0x8F,0x92,0x95,0x98,0x9B,0x9E,0xA1,0xA4,0xA7,0xAA,0xAD                //這是正弦函數(shù)對應(yīng)的值
,0xB0,0xB3,0xB6,0xB8,0xBB,0xBE,0xC1,0xC3,0xC6,0xC8,0xCB,0xCD,0xD0,0xD2,0xD5,0xD7
,0xD9,0xDB,0xDD,0xE0,0xE2,0xE4,0xE5,0xE7,0xE9,0xEB,0xEC,0xEE,0xEF,0xF1,0xF2,0xF4
,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFB,0xFC,0xFD,0xFD,0xFE,0xFE,0xFE,0xFE,0xFE
,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFD,0xFD,0xFC,0xFB,0xFB,0xFA,0xF9,0xF8,0xF7,0xF6
,0xF5,0xF4,0xF2,0xF1,0xEF,0xEE,0xEC,0xEB,0xE9,0xE7,0xE5,0xE4,0xE2,0xE0,0xDD,0xDB
,0xD9,0xD7,0xD5,0xD2,0xD0,0xCD,0xCB,0xC8,0xC6,0xC3,0xC1,0xBE,0xBB,0xB8,0xB6,0xB3
,0xB0,0xAD,0xAA,0xA7,0xA4,0xA1,0x9E,0x9B,0x98,0x95,0x92,0x8F,0x8B,0x88,0x85,0x82
,0x7F,0x7C,0x79,0x76,0x73,0x6F,0x6C,0x69,0x66,0x63,0x60,0x5D,0x5A,0x57,0x54,0x51
,0x4E,0x4B,0x48,0x46,0x43,0x40,0x3D,0x3B,0x38,0x36,0x33,0x31,0x2E,0x2C,0x29,0x27
,0x25,0x23,0x21,0x1E,0x1C,0x1A,0x19,0x17,0x15,0x13,0x12,0x10,0x0F,0x0D,0x0C,0x0A
,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x03,0x02,0x01,0x01,0x00,0x00,0x00,0x00,0x00
,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x05,0x06,0x07,0x08
,0x09,0x0A,0x0C,0x0D,0x0F,0x10,0x12,0x13,0x15,0x17,0x19,0x1A,0x1C,0x1E,0x21,0x23
,0x25,0x27,0x29,0x2C,0x2E,0x31,0x33,0x36,0x38,0x3B,0x3D,0x40,0x43,0x46,0x48,0x4B
,0x4E,0x51,0x54,0x57,0x5A,0x5D,0x60,0x63,0x66,0x69,0x6C,0x6F,0x73,0x76,0x79,0x7C};
/*************延時函數(shù)************/
void delay_1us(unsigned char xx)
{
      while(xx--) ;
}
/*************延時函數(shù)結(jié)束************/
/*************波形產(chǎn)生函數(shù)************/
void sanjiao()                                                          //這是一個產(chǎn)生三角波的函數(shù)
{
      int a = 0;
      value = 0;
      for(a = 0;a < 255; a ++)
            {
                     P1 = value;
                     value++;
                     delay_1us(1);
            }
      value = 255;
      for(a = 255;a > 0;a --)
            {
                     P1 = value;
                     value--;
                     delay_1us(1);
            }
}
void juchi()                                                                   //這是一個產(chǎn)生鋸齒波的函數(shù)
{
      int a = 0;
      for(a = 0;a < 255; a ++)
            {
                     P1 = value;
                     value++;
                     delay_1us(1);
            }
}
void zhengxian()                                                 //這是一個產(chǎn)生正弦波的函數(shù)
{
      int a = 0;
      for(a = 0;a < 255; a ++)
            {
                     P1 = SineData[value];
                     value++;
                     delay_1us(1);
            }
}
/*************波形產(chǎn)生函數(shù)結(jié)束************/
/*************波形判斷函數(shù)************/
void panduan()
{
      if(sanj == 0)                                  //如果按鈕按下，關(guān)閉正弦波和鋸齒波輸出，使三角波控制端有值
      {
            delay_1us(1000);                                                 //這是一個消抖延時
            if(sanj == 0)
            {
                     while(sanj==0) ;
                     san = ~san;
                     ju = zheng = 0;
            }
      }

      if(juc == 0)                                                       //如果按鈕按下，關(guān)閉三角波和正弦波的輸出，使鋸齒波控制端有值
      {
            delay_1us(1000);                                                             //這是一個消抖延時
            if(juc == 0)
            {
                     while(juc==0) ;
                     ju = ~ju;
                     san = zheng = 0;
            }
      }

      if(zhengx == 0)                                                       //如果按鈕按下關(guān)閉三角波和鋸齒波的輸出，使正弦波控制端有值
      {
            delay_1us(1000);                                     //這是一個消抖延時
            if(zhengx == 0)
            {
                     while(zhengx==0) ;
                     zheng = ~zheng;
                     san = ju = 0;
            }
      }
      if(ju) juchi();                                        // 判斷控制端，使輸出
      else if(san) sanjiao();                               //       判斷控制端，使輸出
      else if(zheng) zhengxian();                      //       判斷控制端，使輸出
}
/*************波形判斷函數(shù)結(jié)束************/
void main()
{

      dac_cs = 0;
      for(;;)
      {
            panduan();                                  //執(zhí)行判斷函數(shù)
      }
}

作者: admin 時間: 2018-12-26 15:40
補全原理圖或者詳細(xì)說明一下電路連接即可獲得100+黑幣

作者: 炭疽123 時間: 2019-5-21 09:23

這是原理圖

dsfa.png (323.44 KB, 下載次數(shù): 13)

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