fft.lst

电赛一等奖作品：音频信号分析仪单片机源码

C51 COMPILER V8.02   FFT                                                                   09/05/2007 11:52:44 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE FFT
OBJECT MODULE PLACED IN fft.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE fft.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include <at89x51.h>
   2          #include <intrins.h>
   3          #include <absacc.h>
   4          #include  "var.h"
   5          
   6          void StartFFT()
   7          {
   8   1              XBYTE[0xbfff]=1;
   9   1              XBYTE[0xbfff]=0;
  10   1      }
  11          bit IsFFTFin()
  12          {
  13   1              if( XBYTE[0xbff]==1)
  14   1                      return 1;
  15   1              else
  16   1                      return 0;
  17   1      }
  18          void GetFFT()
  19          {
  20   1              unsigned int temp;
  21   1              unsigned char templ,temph;
  22   1              int i,addr,real,imag;
  23   1              long pow;
  24   1      
  25   1      
  26   1              
  27   1          for(i=0;i<512;i++)
  28   1              {
  29   2                      addr=i*2+ 0xa000;
  30   2                      templ=XBYTE[addr];
  31   2                      temph=XBYTE[addr+1];
  32   2                      temp=temph*256+templ;
  33   2      
  34   2                      real=(int)temp;
  35   2      
  36   2                      addr+=0x400;
  37   2                      templ=XBYTE[addr];
  38   2                      temph=XBYTE[addr+1];
  39   2                      temp=temph*256+templ;
  40   2      
  41   2                      imag=(int)temp;
  42   2              pow=real*real+ imag*imag;
  43   2              Wave[i].power=pow;
  44   2                      Wave[i].freq=SimpleRate/1024*i;
  45   2              }
  46   1      }
  47          
  48          


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    264    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
C51 COMPILER V8.02   FFT                                                                   09/05/2007 11:52:44 PAGE 2   

   DATA SIZE        =   ----      16
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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