Convert matlab to VHDL

This is my Matlab code and i am trying to change it to VHDL:

    %linear dimension of membrane -- bigger is lower pitch
  nx = 5 ; ny=50;
  u = zeros(nx,ny); %time t
  u1 = zeros(nx,ny); %time t-1
  u2 = zeros(nx,ny); %time t-2
  uHit = zeros(nx,ny); %input strike
    % 0 < rho < 0.5 -- lower rho => lower pitch
    % rho = (vel*dt/dx)^2
    rho = 0.5;
    % eta = damping*dt/2
    % higher damping => shorter sound
    eta = 0.0002 ;
    % boundary condition -1.0<gain<1.0
    % 1.0 is completely free edge
    % 0.0 is clamped edge
    boundaryGain = 0.0;
    %time
    Fs = 8000 ;
    time = 0.0:1/Fs:5.0;
    %output sound
    aud = zeros(size(time)) ;
    %sets the amplitude of the stick strike 
  ampIn = .5; 
  %sets the position of the stick strike: 0<pos<n
  x_mid = 2;% nx/2;
  y_mid = 2; %ny/2;
  %sets width of the gaussian strike input -- see figure 1
  alpha = .5 ;
  %compute the gaussian strike amplitude
  for i=2:nx-1
      for j=2:ny-1
          uHit(i,j) = ampIn*exp(-alpha*(((i-1)-x_mid)^2+((j-1)-y_mid)^2));
      end
    end
    %enforce boundary conditions
    uHit(1,:) = boundaryGain * uHit(2,:);
    uHit(nx,:) = boundaryGain * uHit(nx-1,:);
    uHit(:,1) = boundaryGain * uHit(:,2);
  uHit(:,ny) = boundaryGain * uHit(:,ny-1);
figure(1);clf;
mh = mesh(uHit);
title('initial displacement')
set(gca, 'zlim', [-0.5,0.5])

%index for storing audio output
tindex = 1;

for t=time

      %animate drum -- very SLOW
  %     set(mh, 'zdata', u)
  %     drawnow
      % use the central sample for output
      % any other sample or sum is also valid to tr
      aud(tindex) = u(2,2) ; %sum(sum(u))/(n^2); %
      %vectorized update of positions, except for boundaries
      u(2:nx-1,2:ny-1) = 1/(1+eta) * (...
                rho * (u1(3:nx,2:ny-1)+u1(1:nx-2,2:ny-1)+u1(2:nx-1,3:ny)+u1(2:nx-1,1:ny-2)-4*u1(2:nx-1,2:ny-1)) ...
                + 2 * u1(2:nx-1,2:ny-1) ...
                - (1-eta) * (u2(2:nx-1,2:ny-1)) ...
                ) ;
      %enforce boundary conditions
      u(1,:) = boundaryGain * u(2,:);
      u(nx,:) = boundaryGain * u(nx-1,:);
      u(:,1) = boundaryGain * u(:,2);
      u(:,ny) = boundaryGain * u(:,ny-1);
      %enforce boundary conditions
  %     u(1,:) = boundaryGain * (u(2,:)-u1(2,:));
  %     u(n,:) = boundaryGain * (u(n-1,:)-u1(n-1,:));
  %     u(:,1) = boundaryGain * (u(:,2)-u1(:,2)) ;
  %     u(:,n) = boundaryGain * (u(:,n-1)-u1(:,n-1));
      %update history 
      u2 = u1;
      u1 = u;
      %apply drum strikes at two times
      if t==0 | t==1.0 
          u1 = u1 + uHit;
      end
      tindex = tindex + 1;    
  end
% get the spectrum
figure(2); clf;
Hs=spectrum.welch('Hamming',1024,50);
psd(Hs,aud,'Fs',Fs)
title('Free edge plate spectrum')
set(gca,'xlim',[0 2])

%play the sound
sound(aud, Fs)
wavwrite(aud, Fs, 16, 'bell.wav')
  %end

Answer 1

[sai sudha]

HOW TO CONVERT MATLAB CODE TO VHDL CODE..,CAN ANYONE HELP ME IN THIS ASPECT?

Answer 2

[Walter Roberson]

Okay, so what problems are you encountering when you try? Are you using the Simulink HDL Coder toolbox?

[Amad]

I'm new to VHDL programming and am having a tough time finding a starting point to implement my Matlab code above. And where can i get the Simulink HDL coder, because am a college student and if i am going to use it, i just need to use once. Is there like a trial software.

[Hafsa Iqbal]

hey... I have to convert MATLAB code to VHDL. Is there any way to directly convert it into VHDL?

Answer 3

[Tim McBrayer]

You will need to use Simulink HDL Coder in order to automatically convert MATLAB code to VHDL or Verilog. You can run:

ver('hdlcoder')

to see if you have Simulink HDL Coder installed and licensed. If you do have the tool available, you will want to consider the MATLAB Function Block for generating code from your MATLAB code. The demo "An 8-bit RISC Processor using MATLAB Function Blocks" is a good place to start understanding the use of the MATLAB Function block for HDL code generation.

[Geethu]

I want to implement my matlab code in FPGA. Can you advise which one to use system generator or simulink hdl coder? Matlab coding part is over and I don't know simulink and needs to complete my project by February end. Can anyone help?

[Diogo]

I have the same issue, did you managed to get your project done?