i am trying to convert matlab file to verilog file.but i got the error"HDL Code generation does not support 2D-matrices as function inputs."can anyone tell me how to rectify this error.

Question

kokila ayyanar 2018-2-5

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/380762-i-am-trying-to-convert-matlab-file-to-verilog-file-but-i-got-the-error-hdl-code-generation-does-not

编辑： Walter Roberson 2018-2-5

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

First, i have converted the matlab to embedded matlab by using functions.

This is my code

UPTO COLUMN PERMUTATION:

(I)MAIN CODE:

%key generation
maxpoints = 25; 
N = 95;
a = 0;
b = 4; 
rs = linspace(a,b,N); 
M = 500;
for j = 1:length(rs)
      r=rs(j);
      x=zeros(M,1); 
      x(1) = 0.5; 
      a1=4-r;
       for i=1:M
          if (x(i)<=0.5 )
              x(i+1)=mod(((r*x(i))/2+(a1*sin(pi*x(i)))/4),0.999); 
          else
               x(i+1)=mod(((r*(1-x(i)))/2+(a1*sin(pi*(1-x(i)))/4)),0.999);         
          end
       end
      out{j} =x(end-maxpoints:end);
  end
   data = [];
  for k = 1:length(rs)
       n = length(out{k});
      data = [data; rs(k)*ones(n,1),out{k}];
  end
  %  h=plot(data(:,1),data(:,2),'k.'); 
   op1=data(:,2).*95;
   res=round(op1);
   a =res;
   [b,m1,n1] = unique(a);
   [c1,d1] =sort(m1);
   b = b(d1);
   rckey=b;%final key
   img = imread('lenacolor32.tif'); % Read image
   %algorithm
  actu1=permtest(rckey,img);
%output
actu1=permtest(rckey,img);
figure, imshow(actu1),title('Column permutation');
(II)FUNCTION:
%algorithm
function actu1=permtest(rckey,img)
red = img(:,:,1); % Red channel
% figure, imshow(red), title('red')
green = img(:,:,2); % Green channel
% figure, imshow(green), title('green')
blue = img(:,:,3); % Blue channel
% figure, imshow(blue),title('blue')
a = zeros(size(img, 1), size(img, 2));
% figure, imshow(a),title('a')
R = cat(3, red, a, a);
G = cat(3, a, green, a);
B = cat(3, a, a, blue);
% figure, imshow(img), title('Original image');
% figure, imshow(R), title('Red plane');
% figure, imshow(G), title('Green plane');
% figure, imshow(B), title('Blue plane');
% convert to vert plane
op=vertcat(R,G,B);
% figure, imshow(op),title('Vertical format');
%row perm
actu=zeros(size(op));
actu=op(:,:,:);
chang=zeros(size(actu));
chang=actu(:,:,:);
for i=1:1:length(rckey);
     pos=rckey(i); 
     if(rckey(i)==0);
     else
     actu(i,:,:)=chang(pos,:,:);  
     end
end
% figure, imshow(actu),title('Row permutation');
% convert to horz plane
[r,c,n]=size(actu);   
id=fix(r/3);
im1=actu(1:id,:,:);
im2=actu(id+1:2*id,:,:);
im3=actu(2*id+1:r,:,:);
op1=horzcat(im1,im2,im3);
% figure, imshow(op1),title('Horizontal format');
%colperm
actu1=zeros(size(op1));
actu1=op1(:,:,:);
chang1=zeros(size(actu1));
chang1=actu1(:,:,:);
for i=1:1:length(rckey);
     pos=rckey(i); 
     if(rckey(i)==0);
     else
     actu1(:,i,:)=chang1(:,pos,:);  
     end
end
end

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2018-2-5

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/380762-i-am-trying-to-convert-matlab-file-to-verilog-file-but-i-got-the-error-hdl-code-generation-does-not#answer_303522

See https://www.mathworks.com/products/vision-hdl.html

When you have a 2D matrix of input to HDL, you are requesting that the FPGA has as many pins as necessary to input all of those entries simultaneously. So for example for a 1024 * 768 RGB matrix you would need nearly 2.4 million pins. Clearly that is not feasible. So you need to reshape your data to a vector and stream the vector in through a limited number of pins until it is all in to the hardware; once through the pins, the hardware can reshape to 2D as needed for the calculations.