can anyone help me with this function.. i'm new to matlab and i need this for my research

can anyone help me with this function.. i'm new to matlab and i need this for my research and i'm still stuck on this.

when i run this function it says:

Not enough input arguments.

Error in untitled (line 8)

y=step(Turbo, u, intrlvrIndices);

function y=TurboEncoder(u, intrlvrIndices)
%#codegen
persistent Turbo
if isempty(Turbo)
Turbo = comm.TurboEncoder('TrellisStructure', poly2trellis(4, [13 15], 13), ...
'InterleaverIndicesSource','Input port');
end
y=step(Turbo, u, intrlvrIndices);

Answer 1

[KSSV]

You have to provide the inputs to the function. It seems you are either calling the function without providing inputs or running it by hitting F5 key or run button.

u = define your value ;
intrlvrIndices = define your value ; 
y = TurboEncoder(u, intrlvrIndices) ;  % now call the function 

Note: To use/ call the function, it should be in the present working directory.