Simplification C-caller function API

I'd like to have "simplified" C-function prototype since I need to pass many params to the C-fuction.

Is it somehow possible to pass the PARAMs groupped (e.g. in struct)) to the C-caller function?

Answer 1

[Kanishk]

Hi @Jack Daniels,

It is possible to pass struct as an input to the S-Function in Simulink. Using a constant block with the struct as value, you can pass the signal as "Simulink.Bus". To make a bus for the struct you can follow the below linked MATLAB Answer.

https://www.mathworks.com/matlabcentral/answers/519927-how-to-convert-a-struct-into-a-bus

In the S-Function Output Wrapper, change the input type to the newly created Bus. If you are using S-Funtion builder in Simulink, it will automatically create an header file for defining the bus else you need to define the header file while creating the Bus object and include it in the S-Function file.

For more detailed steps on how to use Bus with S-Functions in Simulink you can follow this MATLAB Documentation.

https://www.mathworks.com/help/releases/R2024b/simulink/sfg/building-s-functions-automatically.html

or use this command in MATLAB command window

web(fullfile(docroot, 'simulink/sfg/building-s-functions-automatically.html'))

Hope this helps!