sin.lst

函数信号发生器程序

C51 COMPILER V7.50   SIN                                                                   06/28/2008 14:44:24 PAGE 1   


C51 COMPILER V7.50, COMPILATION OF MODULE SIN
OBJECT MODULE PLACED IN SIN.OBJ
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE SIN.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          ///////////////////////////////////////////////////
   2          //简易正弦波发生器
   3          //精英团队提供
   4          //控制信号    ：P20
   5          //数据线      ：P0口
   6          ///////////////////////////////////////////////////
   7          #include <reg52.h> 
   8          sbit WR2 = P2 ^ 0; 
   9          unsigned char code sin[256]=     //正弦表
  10                  {
  11                  0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,0xb1,0xb4,0xb7,0xba,0xbc,
             -0xbf,0xc2,0xc5, 
  12                  0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf1,
             -0xf2,0xf4,0xf5, 
  13                  0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
             -0xff,0xfe,0xfd, 
  14                  0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,0xf4,0xf2,0xf1,0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,
             -0xde,0xdd,0xda, 
  15                  0xd8,0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,0xa8,0xa5,0xa2,
             -0x9f,0x9c,0x99,
  16                  0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,
             -0x57,0x55,0x51, 
  17                  0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,
             -0x1a,0x18,0x16, 
  18                  0x15,0x13,0x11,0x10,0x0e,0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,0x00,
             -0x00,0x00,0x00, 
  19                  0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,
             -0x11,0x13,0x15, 
  20                  0x16,0x18,0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,0x3d,0x40,0x43,0x45,
             -0x48,0x4c,0x4e, 
  21                  0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66,0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80
  22                  }; 
  23          ///////////////////////////////////////////////////
  24          void Delay_1ms(unsigned char t)//精确延时子程序，延时 1MS*t S
  25          {
  26   1              unsigned char a;
  27   1              while(--t != 0)
  28   1              {
  29   2                      for(a = 0; a < 125; a++);
  30   2              }
  31   1      }
  32          ////////////////////////////////////////////////////
  33          void Delay(unsigned long time)
  34          {
  35   1          while(time--);
  36   1      }
  37          ///////////////////////////////////////////////////
  38          void DAC(unsigned char dat)
  39          {
  40   1          WR2=1;
  41   1              
  42   1              P0=dat;
  43   1              Delay(5);
  44   1              WR2=0;
  45   1              Delay(5);
C51 COMPILER V7.50   SIN                                                                   06/28/2008 14:44:24 PAGE 2   

  46   1              WR2=1;
  47   1              Delay(5);
  48   1              
  49   1      
  50   1      }
  51          ///////////////////////////////////////////////////
  52          void main(void) 
  53          { 
  54   1              unsigned int i;
  55   1              WR2=1;
  56   1              
  57   1              while(1)
  58   1              {
  59   2                      for(i=0;i<256;i++)
  60   2                         { DAC(sin[i]);Delay_1ms(10);}//改变延时即可改变正弦波的频率
  61   2              } 
  62   1       
  63   1      }
  64          /////////////////////////////////////////////////// 


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    105    ----
   CONSTANT SIZE    =    256    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----       4
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)