How to generate custom unoptimized code within a system composer software architecture model?

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Alex 2025-4-7

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https://ww2.mathworks.cn/matlabcentral/answers/2176072-how-to-generate-custom-unoptimized-code-within-a-system-composer-software-architecture-model

评论： Mark McBroom 2025-4-15

C-function code generation appears to work differently when generating code inside of a system composer software architecture model isntead of a standalone simulink model. I am trying to insert certain processer primitaves (mutexes) into my simulink model such that it is incorporated into the autogenerated code. It is a few simple lines of c++ code, so I opted to use the C-function block. In both cases, I have specified in the c-function dialogue window "Generate code as-is (optimizations off)"

Inside of an export-function simulink model, I created a c-function block that includes a comment and then a simple line of code, which generates correctly:

However, if I copy this exact same c-function into an export-function model within a system composer software architecture model, it no longer generates my my specified code. Instead, it generates function calls but does not define the functions anywhere. (Even doing a simple text search of my entire workspace only shows that the function call shown below gets generated).

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Josh Kahn 2025-4-8

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MySWArch.zip

Hi @Alex,

I see the code from the c-caller block when I tried. Can you look at the attached and see if there are any differences in how we configured the models?

Josh

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Alex 2025-4-14

Are there any possible workarounds? We are using system composer for our software architecture which seems to heavily rely on Simulink Functions, but we absolutely need the ability to insert custom C++ code into the software.

Mark McBroom 2025-4-15

The System Outputs block can be used as an alternate approach to inject arbitrary code into the generated C++ code.

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