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標(biāo)題: 單片機(jī)產(chǎn)生方波鋸齒波三角波程序 [打印本頁]
作者: 晨跑的蝸牛    時(shí)間: 2017-5-15 09:42
標(biāo)題: 單片機(jī)產(chǎn)生方波鋸齒波三角波程序
單片機(jī)產(chǎn)生方波鋸齒波三角波程序
： 基于單片機(jī)產(chǎn)生方波、鋸齒波、三角波程序.doc (34 KB, 下載次數(shù): 9)

  1. #include<reg51.h>

  3. #define uchar unsigned char
  4. #define uint unsigned int

  6. unsigned char x=0,m=0,y=128;

  8. sbit WR_DA=P2^1;
  9. sbit CS_DA=P2^0;//DA與單片機(jī)的接口
  10. sbit S0=P3^0; //波形選擇，每次按下將產(chǎn)生不同的波形
  11. sbit S1=P3^1; //頻率減
  12. sbit S2=P3^2; //頻率加
  13. sbit S3=P3^3; //調(diào)節(jié)方波的占空比

  15. uchar code SinTab[256]={0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc,0xbf,0xc2,0xc5

  17. ,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf1,0xf2,0xf4,0xf5

  19. ,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd

  21. ,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda

  23. ,0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,0x99

  25. ,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,0x51

  27. ,0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16

  29. ,0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,0x00,0x00,0x00

  31. ,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02 ,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15

  33. ,0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,0x40,0x43,0x45,0x48,0x4c,0x4e

  35. ,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66 ,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80 };

  37. void delayms(uint t)
  38. {
  39.     uint i;
  40.     while(t--)
  41.     {
  42.        for (i=0;i<125;i++);//對(duì)于11.0592M時(shí)鐘，約延時(shí)1ms
  43.     }
  44. }

  46. void delay(uint t)
  47. {
  48.     uint i;
  49.     for (i=t;i>0;i--);
  50. }


  53. void time0_init()
  54. {
  55.     TMOD|=0x01;   //定時(shí)器設(shè)置 16位
  56.     TH0=-50000/256;
  57.     TL0=-50000%256;//初始化值
  58.     ET0=1;
  59.     TR0=1;
  60.     EA=1;
  61. }

  63. void time0_int(void) interrupt 1
  64. {  
  65.     TR0=0;//關(guān)閉定時(shí)器
  66.     TH0=-50000/256;
  67.     TL0=-50000%256;//重裝初值

  69. if(S0==0)
  70. {
  71.      delayms(10);//按鍵消抖
  72.      if(S0==0) m++;
  73.    while(!S0);//松手檢測(cè)
  74. }

  76. if(S1==0)
  77. {
  78.      delayms(10);
  79.      if(S1==0) x=x+1;
  80.    while(!S1);//松手檢測(cè)
  81. }

  83. if(S2==0)
  84. {
  85.      delayms(10);
  86.      if(S2==0) x=x-1;
  87.    while(!S2);//松手檢測(cè)
  88. }

  90. if(S3==0)
  91. {
  92.      delayms(10);
  93.      if(S3==0) y=y+5;
  94.    while(!S3);//松手檢測(cè)
  95. }

  97. if(y>254) y=0;
  98. if(m>5) m=0;
  99. if(x>50) x=0;
  100. TR0=1;//啟動(dòng)定時(shí)器
  101. }

  103. void fangbo()    //方波
  104. {  
  105.    uchar i,j;
  106.    j=255-y;
  107.    CS_DA=0;
  108.    WR_DA=0;
  109. for(i=y;i>0;i--)
  110. {
  111.     P0=0;
  112.     delay(x);
  113. }

  115. while(j--)
  116. {
  117.     P0=255;
  118.     delay(x);
  119. }   
  120. }

  122. void juchi()    //鋸齒波
  123. {
  124.     uchar i;
  125.     CS_DA=0;
  126.     WR_DA=0;
  127. for(i=255;i>0;i--)
  128. {   
  129.      P0=i;
  130.      delay(x);
  131. }

  133. }
  134. void sanjiao()      //三角波
  135. {
  136. uchar i;
  137.     CS_DA=0;
  138.     WR_DA=0;
  139. for(i=0;i<255;i++)
  140. {
  141.      P0=i;
  142.      delay(x);
  143. }
  144. while(i--)
  145. {
  146.     P0=i;
  147.     delay(x);
  148. }
  149. }

  151. void tixing()         //梯形波
  152. {
  153. uchar i=255,j,k;
  154. CS_DA=0;
  155. WR_DA=0;
  156. while(i--)
  157. {
  158.    P0=i;
  159.    delay(x);
  160. }

  162. for(j=0;j<100;j++)
  163. {
  164.    P0=0;
  165.    delay(x);
  166. }

  168. for(k=0;k<255;k++)
  169. {
  170.    P0=k;
  171.    delay(x);
  172. }
  173. }

  175. void sin()      //正弦波
  176. {  
  177. uchar a;  
  178. CS_DA=0;
  179. WR_DA=0;
  180. for(a=0;a<255;a++)
  181. {
  182.    P0=SinTab[a];
  183.    delay(x);
  184. }
  185. }

  187. main()
  188. {
  189. time0_init();
  190. while(1)
  191. {
  192.    switch(m)
  193.    {
  194.      case 0:
  195.      fangbo();    //方波
  196.      break;
  197.      case 1:
  198.      juchi();    //鋸齒波
  199.      break;
  200.      case 2:
  201.      sanjiao();   //三角波
  202.      break;
  203.      case 3:
  204.      sin();    //正弦波
  205.      break;
  206.      case 4:
  207.      tixing();    //梯形波
  208.      break;
  209.      default: fangbo();
  210.    }
  211. }
  212. }

復(fù)制代碼


作者: woojoon1981    時(shí)間: 2018-6-20 22:45
此程序我試驗(yàn)了。不可用啊



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