rfft32m.lst

TMS320F2812 FFT 源码,包括详细的应用文档

TMS320C2000 COFF Assembler PC Version 3.06 Fri Nov 07 10:50:05 2003

Tools Copyright (c) 1996-2002 Texas Instruments Incorporated
rfft32m.asm                                                          PAGE    1

       1              ;============================================================================
       2              ;
       3              ; File Name     : rfft_magc.asm
       4              ; 
       5              ; Originator    : Advanced Embeeded Control 
       6              ;                 Texas Instruments 
       7              ; 
       8              ; Description   : This file contains source code to compute the magnitude square 
       9              ;                 of complex spectral bins for Real FFT modules   
      10              ;               
      11              ; Date          : 26/2/2002 (dd/mm/yyyy)
      12              ;===========================================================================    
      13              ; Routine Type  : C Callable        
      14              ;
      15              ; Description   :
      16              ; void FFTR_win(FFTxxxR_handle) 
      17              ; This function computes magnitude square of the complex spectral bins, produced by
      18              ; the Real FFT modules. Allows in-place and off-place storage of the magnitude square results.
      19              ;====================================================================== 
      20              ; REAL FFT MODULES
      21              ;----------------------------------------------------------------------
      22              ;typedef struct {   
      23              ;       long *ipcbptr;
      24              ;       long *tfptr;               
      25              ;       int size;
      26              ;       int nrstage;             
      27              ;       long *magptr;
      28              ;       long *winptr; 
      29              ;       long peakmag;
      30              ;       int peakfrq;
      31              ;       int ratio;     
      32              ;       void (*init)(void);
      33              ;       void (*calc)(void *);
      34              ;       void (*split)(void *);
      35              ;       void (*mag)(void *);
      36              ;       void (*win)(void *);
      37              ;       }FFTxxxR;
      38              ;======================================================================
      39              
      40                              .def   _RFFT32_mag    ;
      41                          
      42 00000000       _RFFT32_mag: 
      43              
      44 00000000 3B01              SETC    SXM
      45                          
      46 00000001 C5C4              MOVL    XAR7,*XAR4      ; XAR5=ipcbptr
      47 00000002 C4F4              MOVL    XAR6,*+XAR4[6]  ; XAR6=magptr
      48                          
      49 00000003 58E4              MOVZ    AR0,*+XAR4[4]   ; AR7=size
      50 00000004       MAG_LP:     
      51 00000004 5633              ZAPA                    ; ACC=0, P=0
      52 00000005 564F              QMACL   P,*XAR7,*XAR7++ ; Q15*Q15=Q30
         00000006 87C7 
      53 00000007 564F              QMACL   P,*XAR7,*XAR7++ ; Q15*Q15+Q30=Q30
         00000008 87C7 
TMS320C2000 COFF Assembler PC Version 3.06 Fri Nov 07 10:50:05 2003

Tools Copyright (c) 1996-2002 Texas Instruments Incorporated
rfft32m.asm                                                          PAGE    2

      54 00000009 07AB              ADDL    ACC,P
      55 0000000a 1E86              MOVL    *XAR6++,ACC     ; Store in Q30
      56 0000000b 0008              BANZ    MAG_LP,AR0--
         0000000c FFF9 
      57                          
      58              ; Find maximum magnitude
      59 0000000d DC04              ADDB    XAR4,#4         ; XAR4->size
      60 0000000e 0200              MOVB    ACC,#0
      61 0000000f 1EF4              MOVL    *+XAR4[6],ACC   ; peakmag=0
      62 00000010 58C4              MOVZ    AR0,*XAR4       ; AR0=size
      63 00000011 83D4              MOVL    XAR5,*+XAR4[2]  ; XAR5=magptr
      64              
      65 00000012 FF20              MOV     ACC,#0
         00000013 0000 
      66              
      67              ;Find the maximum value among the FFT Magnitudes    
      68 00000014 F7A0              RPT     AR0
      69 00000015 5661              || MAXL ACC,*XAR5++
         00000016 0085 
      70                          
      71 00000017 1EF4              MOVL    *+XAR4[6],ACC   ; update peak magnitude
      72 00000018 B600              MOVB    XAR7,#0         ; XAR7=0
      73 00000019 83D4              MOVL    XAR5,*+XAR4[2]  ; XAR5=magptr
      74              ;Find the spectral bin corresponding to maximum magnitude.  
      75 0000001a       NEXT_BIN:               
      76 0000001a 5661              MAXL    ACC,*XAR5++
         0000001b 0085 
      77 0000001c 7787              NOP     *XAR7++
      78 0000001d EDFD              SBF     NEXT_BIN,NEQ    
      79                          
      80 0000001e 778F              NOP     *--XAR7
      81 0000001f DC08              ADDB    XAR4,#8         ; XAR4->peakfrq
      82 00000020 7FC4              MOV     *XAR4,AR7       ; update peak magnitude     
      83 00000021 0006              LRETR      
      84              
      85              
      86               

No Assembly Errors, No Assembly Warnings