Error while conversion from Matlab to VHDL

This is my Matlab Code

%#codegen
function y = neha(data)
  Persistent hMod hDemod;
  if isempty(hMOd)
       hMod = comm.BPSKModulator;
       hDemod = comm.BPSKDemodulator;
  end
    modSignal = step(hMod, data);
    y = step(hDemod, modSignal);
    end

This is my Test Bench

     clear neha;
        x=[1 0 1 0 1 0 1  1 0 0 1 ]
        len=size(x)
        y=zeros(1,len);
       for ii=1:len
      data =x(ii);
      y(ii) = neha(data);    
     end

I have validate the code. But while conversion into VHDL I am getting this error

neha FixPt:15 - error -  Single and Double Data Types are not supported in HDL conversion

[Walter Roberson]

Are you trying to do logical indexing? You cannot index an array at 0 unless the 0 is logical(0) -- but if it was then neha(data) would be empty and you would be trying to assign the empty array to yy(ii)

[Neha]

Sir, I am not indexing the array by 0. Its starting from 1 till length. As mentioned, the error is related to Single and Double Data Types. Pls. give your valuable suggestions.

[Walter Roberson]

Ah I was getting function calls and indexing confused. In any case see the Answer I gave.

Answer 1

[Walter Roberson]

x = uint8([1 0 1 0 1 0 1  1 0 0 1 ]);

and

y = zeros(1, len, class(x));