MATLAB: How to deal with functions that are not supported in HDL coder

HDL Coder

I am using HDL coder to generate Verilog code from Matlab algorithms. But I am getting the following error while trying to execute the 'Verify with Cosimulation' step :-

The function 'coder' is not supported for standalone code generation. See the documentation for coder.extrinsic to learn how you can use this function in simulation.

I have the Mentor Graphics Modelsim student version installed in my system and have linked it with Matlab.

Please help me out in dealing with the issue.

Thanks in advance.

Best Answer

If you are using coder.extrinsic to call a function in your MATLAB code, it is likely that the function is not supported for code-generation. You will need to remove that call to be able to generate code from it.

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MATLAB: Function deal()

y = cell(1,3);  % dispense with the y1, y2, y3 stuff....
[y{:}] = deal(5)

or, without defining the variable first:

[Y{1:3}] = deal(5)  % Y is not defined before this line..

But why use DEAL at all?

y = cell(1,3);
y(:) = {9}

MATLAB: When I fix inputs in the matlab testbench (for hdl code conversion) , is the hdl code generated based on those inputs only

HDL Coder will generate your DUT as stand-alone from the test bench. It will not fold the constant values from the testbench into the DUT. It will fold constants within your DUT as much as possible during the optimization process.

A testbench that provides constant inputs is not a best practice, particularly if you are using float to fixed-point conversion. F2F can use the range of supplied testbench values as data to determine the desired data types for the inputs. It will propagate the type data throughout the design as well. If your testbench does not cover the full range of values that you expect your hardware to be able to handle, HDL Coder cannot create HDL code that will accurately respond to the full desired range of inputs.

Best Answer

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MATLAB: Function deal()

MATLAB: When I fix inputs in the matlab testbench (for hdl code conversion) , is the hdl code generated based on those inputs only

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