main.lst

基于8051F单片机,实现1024点的FFT 用C 语言实现的.效果与FPGA实现相同.

C51 COMPILER V8.02   MAIN                                                                  05/09/2008 21:51:22 PAGE 1   


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

line level    source

   1          
   2          //-----------------------------------------------------------------------------
   3          // IntFFT_BRIN.c
   4          //-----------------------------------------------------------------------------
   5          // Copyright 2003 Cygnal Integrated Products, Inc.
   6          //
   7          // AUTH: BD
   8          // DATE: 30 JAN 03
   9          //
  10          // This program collects data using ADC0 at <SAMPLE_RATE> Hz and performs
  11          // an FFT on the data.  The Real and Imaginary parts of the results are then
  12          // sent to the UART peripheral at <BAUDRATE> bps, where they can be displayed
  13          // or captured using a terminal program.
  14          //
  15          // Note that the FFT performed in this software is optimized for storage space
  16          // (RAM).  The resulting Frequency-domain data is not suitable for analyzing
  17          // Signal-to-noise or distortion performance.
  18          //
  19          // This program uses a 22.1184 MHz crystal oscillator multiplied by (9/4)
  20          // for an effective SYSCLK of 49.7664 Mhz. This program also initializes and
  21          // uses UART0 at <BAUDRATE> bits per second.
  22          //
  23          // Target: C8051F12x
  24          // Tool chain: KEIL C51 6.03
  25          //
  26          #include "common.h"
  27          #include "Int_FFT.h"
  28          #include "ADC0.h"
  29          
  30          
  31          bit  Conversion_Set_Complete=0;
  32          unsigned int BinNum=0;
  33          unsigned int index=0, ADC_Index=0;
  34          
  35          void main()
  36          {
  37   1      
  38   1         // disable watchdog timer
  39   1         WDTCN = 0xde;
  40   1         WDTCN = 0xad;
  41   1      
  42   1      
  43   1         SYSCLK_Init();                      // initialize external clock and PLL
  44   1         PORT_Init ();                       // set up Port I/O
  45   1         UART0_Init ();                      // initialize UART0
  46   1         TIMER3_Init (SYSCLK/SAMPLE_RATE);   // initialize Timer3 to overflow at
  47   1                                             // <SAMPLE_RATE>
  48   1         ADC0_Init ();                       // init ADC0
  49   1      
  50   1         EA = 1;                             // globally enable interrupts
  51   1      
  52   1         while (1)
  53   1         {
  54   2            ADC_Index = 0;
  55   2            Conversion_Set_Complete = 0;
C51 COMPILER V8.02   MAIN                                                                  05/09/2008 21:51:22 PAGE 2   

  56   2      
  57   2            EIE2 |= 0x02;                    // enable ADC interrupts
  58   2      
  59   2            SFRPAGE = LEGACY_PAGE;
  60   2      
  61   2            while(!Conversion_Set_Complete);
  62   2      
  63   2      
  64   2            SFRPAGE = UART0_PAGE;
  65   2            printf("\nCollected Data\nSample\tValue\n");
  66   2            for (BinNum = 0; BinNum < NUM_FFT; BinNum++)
  67   2            {
  68   3               // Print Data in the format: Sample <tab> Value <tab>
  69   3               printf("%d\t%u\n", BinNum, Real[BinNum]);
  70   3            }
  71   2      
  72   2            WindowCalc(Real, 1);             // Window Real Data, and convert to
  73   2                                             // differential if it is single-ended
  74   2      
  75   2            Bit_Reverse(Real);               // Sort Real (Input) Data in bit-reverse
  76   2                                             // order
  77   2            Int_FFT(Real, Imag);             // Perform FFT on data
  78   2      
  79   2            SFRPAGE = UART0_PAGE;
  80   2      
  81   2            printf("\nBin\tReal\tImag\n");
  82   2      
  83   2            // Output the FFT data to the UART
  84   2            for (BinNum = 0; BinNum < NUM_FFT; BinNum++)
  85   2            {
  86   3               // Print Data in the format: Bin <tab> Real <tab> Imaginary
  87   3               printf("%d\t%d\t%d\n", BinNum, Real[BinNum], Imag[BinNum]);
  88   3            }
  89   2      
  90   2           if (RUN_ONCE)
  91   2               while(1);
  92   2      
  93   2         }
  94   1      }
*** WARNING C316 IN LINE 94 OF main.c: unterminated conditionals


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    245    ----
   CONSTANT SIZE    =   2623    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      6    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =      1    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  1 WARNING(S),  0 ERROR(S)