MATLAB: Undefined function or variable ‘inputParser’ while using Matlab Function in Stateflow

input parserstateflow

Hello all,
I'm using a matlab function within my stateflow diagram, however I'm getting the error "Undefined function or variable 'inputParser'". When I try to run the function within a .m file it works fine. I cannot find any limitations to inputParser usage in stateflow within the help files or by google.
Code:
function x = OK(i) 
    default = 1:50; 
    p = inputParser; 
    addOptional(p,'i',default);
    parse(p,i);
    if all(Input_Mux(i)== enumState.OK)
         x = true;
    else
         x = false;
    end
end
Does anyone know why this is failing?

Best Answer

It seems that the problem might be happening because the inputParser does not support code generation. You may try coder.extrinsic
coder.extrinsic('inputParser', 'addOptional', 'parse', 'get')
add this line at beginning of function definition
function x = OK(varargin)
    coder.extrinsic('inputParser', 'addOptional', 'parse', 'get')
    Input_mux = [1:100]; %Would normally be stateflow input, added here for ease.
    
    default = 1:50; 
    p = inputParser; 
    addOptional(p,'i',default);
    parse(p,varargin{:});
    if all(Input_mux(p.Results.i)== 5)
         x = true;
    else
         x = false;
    end
end
'get' is needed as extrensic to extract data from p.Results as shown in comment: https://www.mathworks.com/matlabcentral/answers/542015-undefined-function-or-variable-inputparser-while-using-matlab-function-in-stateflow#comment_884843
Related Question