SimuLink: Implement Blocks with System Objects having multiple outputs.

Question

Jens Henrik Göbbert 2014-5-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/128360-simulink-implement-blocks-with-system-objects-having-multiple-outputs

回答： Xianchao 2014-7-2

Hi,

I would like to use User-Defined System Objects in SimuLink ( http://www.mathworks.de/de/help/simulink/matlab-system-block.html ) having eleven outputs. But when I add the block to a SimuLink model and try to compile it, I get the error message

"[..]error occurred when invoking 'isOutputFixedSizeImpl' method of 'sf.csvSource'. Too many output arguments."

I implement the protected function isOutputFixedSizeImpl() like this:

function varargout = isOutputFixedSizeImpl(~)
    varargout = cell(1, getNumOutputs(obj));
    for i = getNumOutputs(obj)
        varargout{i} = true;
    end
end

Any idea what I am doing wrong?

I got the code from here: https://github.com/travisfcollins/OFDMSync/blob/master/OFDMDemodulator.m

best, Jens Henrik

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Answer 1

Xianchao 2014-7-2

1
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https://ww2.mathworks.cn/matlabcentral/answers/128360-simulink-implement-blocks-with-system-objects-having-multiple-outputs#answer_143374

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Hey Jens Henrik,

Did you forget to add 'obj' as input argument? Try this:

        function varargout = isOutputFixedSizeImpl(obj)
            % Get outputs fixed size.
            varargout = cell(1, getNumOutputs(obj));
            for i = 1:getNumOutputs(obj)
                varargout{i} = true;
            end            
        end