As per my understanding of the question, you would like a way to generate “S-function” using “legacy tool” for a function whose “return” and “argument” parameters are of “void” type.
I was able to create a small example for this, please follow the steps below to create the “S-function” with required specifications:
- Create two code files named "sum.c" and "sum.h" that contain a void function and the headers, respectively.
- Generate the S-function using “legacy code tool”.
- A Simulink model will open with the required “void” type block.
To know more about using the “legacy code tool”, it’s integration with C/C++ code and a few examples, refer to the following documentation links:
- https:/www.mathworks.com/help/simulink/slref/legacy_code.html
- https://www.mathworks.com/help/simulink/sfg/integrating-existing-c-functions-into-simulink-models-with-the-legacy-code-tool
- https://www.mathworks.com/help/rtw/ug/legacy-code-tool-examples.html
I hope this is beneficial!
