How to remove the error " Coder error: Found unsupported matrix type at output port: 0"?

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priya agarwal 2014-1-13

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https://ww2.mathworks.cn/matlabcentral/answers/112202-how-to-remove-the-error-coder-error-found-unsupported-matrix-type-at-output-port-0

回答： Tim McBrayer 2014-1-13

I am trying to convert the following function as well as test script to vhdl. I know that Rxyz returns a matrix as output thus the error, but how to remove it? My script uses the output matrix for further calculations.

Rxyz.m is the function and runnew.m is the testbench.

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Answer 1

Tim McBrayer 2014-1-13

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https://ww2.mathworks.cn/matlabcentral/answers/112202-how-to-remove-the-error-coder-error-found-unsupported-matrix-type-at-output-port-0#answer_120716

Your output is a 3x3 matrix, so one possibility is to return 9 outputs, one for each matrix element. Another more hardware-friendly option is to stream the outputs on a single port. By this I mean have a single output, whose value is time-variant, and sequentially outputs the 9 matrix elements. If you take this approach you will need to keep the inputs stable for 9 calls to your design; each call can generate the next matrix element.