Hello,

i want to test my fft and filter component that i created for FGPA. to do this i want to create
a test input data (with size of say 1000 points). and process the data both with matlab and
xilinx ise simulation to see if the match each other. to create this input data, i would use
matlab.

now my problem is that i can't feed this data to vhdl testbench. it is a tediuos job to
manually convert all values to vhdl format and put that in vhdl testbench. is there any way to
convert this matrix to hdl code?

Also i need to do the vice versa. that is when i did the simulation i 
would store the output in an array signal. Then I need to read this array signal and somehow
bring the values to matlab as a matrix.
does anybody has any idea?
With thanks in advance
kian zarrin

Hello,
>
>i want to test my fft and filter component that i created for FGPA. to do this i want to
create a test input data (with size of say 1000 points). and process the data both with matlab
and xilinx ise simulation to see if the match each other. to create this input data, i would
use matlab.
>
>now my problem is that i can't feed this data to vhdl testbench. it is a tediuos job to
manually convert all values to vhdl format and put that in vhdl testbench. is there any way to
convert this matrix to hdl code?
>
>Also i need to do the vice versa. that is when i did the simulation i 
>would store the output in an array signal. Then I need to read this array signal and
somehow bring the values to matlab as a matrix.
>does anybody has any idea?
>With thanks in advance
>kian zarrin
>

What I normally do is create a text file of binary data from my Matlab variables and read it
into my testbench with the textio functions.

To create the text file from Matlab you can use a for loop on the data with dec2bin like so:

% write file for hardware testbench
fid  = fopen('tb_data_in.txt','w');
for k = 1:length(X)
    fprintf(fid, '%s\n', dec2bin((X(k)),12));  % for 12 bits per sample
end
fclose(fid);

You need to write some extra code to handle signed data though.

To read the file into you testbench use the textio functions described here:
http://vdlande.com/VHDL/filedec.html

Similarly you can write the testbench outputs to a file and import it into Matlab, or export
the outputs from your simulator.

-joe