make a static const variable in generated code with Embedded Coder

Question

Marcel Günther 2021-7-6

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/872788-make-a-static-const-variable-in-generated-code-with-embedded-coder

评论： Marcel Günther 2021-7-6

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Hello,

I'm using Embbeded Coder to generate code which is included to a superordinated C project.

This superordinated C project need to access some data, defined in matlab.

Since this data need to be accessible to compile-time, it need to be generated by Embedded Coder as:

static const float MyNumber = 42.0f;

How to achieve this?

Thank you very much.

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Answer 1

Jonas 2021-7-6

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https://ww2.mathworks.cn/matlabcentral/answers/872788-make-a-static-const-variable-in-generated-code-with-embedded-coder#answer_740868

In either the Model Workspace or a Data Dictionary linked to your model, create a Simulink.Parameter object and name it "MyNumber". Give it data type 'single' and value 42.0. Go to the Code Generation tab, and select as Storage class 'Const'.

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Marcel Günther 2021-7-6

This makes the MyNumber appear in the model.c file. But how to add it to the model.h file, to make the constant value visible to the superordinate c-project? Thank you.

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