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Altera_Forum's avatar
Altera_Forum
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13 years ago

Strange FFT Output

I've been using SignalTap to create a CSV file of the output from my FFT engine. However, when looking at the output in Matlab, it doesn't look right at all. I know that the ADC's working prop...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

I normally write as follows: 


---- write data_out to file
process(clk)
file file_out : text open write_mode is "filename.txt";
variable line_in : line;
variable tmp : integer := 0;
begin
if(rising_edge(clk))then
  if valid_out = '1' then
     tmp := to_integer(signed(data_out));
     write(line_in, tmp);    
     writeline(file_out,line_in);
  end if;
end if;
end process;