fft_small_tb.m

FFT 32k use VHDL MATLAB

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Altera FFT MegaCore Function Version 2.1.0
% file : fft_small_tb.m
%
% Description : The following Matlab testbench excercises the Altera FFT Model fft_small_model.m
% generated by Altera's FFT Megacore and outputs results to text files.
%
% Copyright (C) 1988-2004 Altera Corporation                                                
% Parameterization Space    
N=16384;
% Read input complex vector from source text files 
fidr = fopen('real_input.txt','r');                                            
fidi = fopen('imag_input.txt','r');                                            
xreali=fscanf(fidr,'%d');                                                      
ximagi=fscanf(fidi,'%d');                                                      
fclose(fidi);                                                                  
fclose(fidr);                                                                  
% Create input complex row vector from source text files 
x = xreali' + j*ximagi';                                                         
[y, exp_out] = fft_small_model(x,N,0); 
fidro = fopen('real_output_c_model.txt','w');                                  
fidio = fopen('imag_output_c_model.txt','w');                                  
fideo = fopen('exponent_out_c_model.txt','w');                                 
fprintf(fidro,'%d\n',real(y));                                                 
fprintf(fidio,'%d\n',imag(y));                                                 
fprintf(fideo,'%d\n',exp_out);                                                 
fclose(fidro);                                                                 
fclose(fidio);                                                                 
fclose(fideo);