When generating code for a Simulink model that includes an S-function, you may encounter the error indicating that the S-function parameters must be one or two-dimensional nonsparse numeric or character arrays.
This might happen because of these possible scenarios:
1. Passing a 3D or higher dimensional array: 3D inputs are supported for the S-function but not natively supported for code generation. A TLC file is needed to handle complex data types.
2. S-functions that call into MATLAB are not supported for code generation.
Refer to this link to know more about S-function Code Generation capabilities:
Please follow these possible workarounds to resolve the issue:
1. Define your own code generation using the C function/Target Language Compiler (TLC) file & “mdlRTW” function.
Please find its documentation in the link below:
2. If the purpose of using S-function is to protect your intellectual property, instead of generating an S-Function you can try creating a protected model.
I hope this helps resolve the issue!
