How to read workspace variables for generated code of simulink model in C code?

I am new to the code generation of simulink models. I am generating C code of a Simulink model. The model reads many variables from Matlab workspace. I want to make the generated C Model also read these variables somehow (maybe form .mat file) and load them somehow to a workspace where all blocks can read. What is the best way to do this ?

Answer 1

[Spruha]

Hi Samer,

I understand you are trying to use variables from the MATLAB workspace in your generated C code and make them accessible across all blocks in the Simulink model.

This can be done using the following approaches:

• Save the variables in a .mat file and use ‘coder.load’ to import them as constants during code generation. This embeds the values directly into the generated code.
• For scenarios where variables need to be loaded at runtime, use ‘coder.write’ to generate ‘coderdata’ files and access them dynamically using ‘coder.read’.
• Alternatively, for signal or time-series data, you can use From Workspace or From File blocks to load data into the model.

Please refer to the official documentation for information on ‘coder.load’ and data read/write operations in generated code

• https://www.mathworks.com/help/simulink/slref/coder.load.html
• https://ww.mathworks.com/help/coder/ug/generate-code-that-reads-and-writes-data-files.html

Hope this helps!