MATLAB: Error – ‘All inputs must be constant’ in MATLAB Coder

code generationmatlab coder

I am trying to convert the function poly2trellis into C using MATLAB Coder. The problem arise when I check the issues in the Coder App and it displays the error that ' all inputs must be constant'.
function [ trellis ] = con_poly2trellis(k) %#codegen
generator_matrix=[0 0];
if k==3
  generator_matrix=[5 7];
else
  generator_matrix=[32 35];
end
trellis = poly2trellis(k,generator_matrix);
end
Does it mean that I can generate code for a single specific input and not based on any value passed for 'k'?
What if a generic function is required which can accept any value of 'k' and I can include multiple if-else case for generator_matrix?
Please help and suggest.

Best Answer

if k==3
  trellis = poly2trellis(3,[5,7]);
elseif k==4
And so on.
Related Question