How to resolve function redefinition and function parameter data type conflicts when adding custom interface functions for SIL testing in Simulink

Question

Ke 2026-1-26，13:45

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2182373-how-to-resolve-function-redefinition-and-function-parameter-data-type-conflicts-when-adding-custom-i

Hello，My model interface uses a GetSet storage class and I added custom functions when generating C code. It compiles fine, but during SIL testing, there are errors of function redefinition and function parameter conflicts:

1、I added my custom interface externally, and when compiling the generated C code, my custom code was successfully compiled into the generated code. However, during SIL testing, the SIL component also generates a function for my interface, which causes a function redefinition error during SIL testing. How can this be resolve？

2、To avoid compiling my custom functions into the SIL file during SIL testing, I only included the header files of my custom functions. This allows the SIL component to generate properly. However, my custom Set function has two parameters: one is an index value and the other is a float value. In the generated C code, the index is defined as SINT32, so I also use SINT32 in my custom function. But in the SIL-generated component, the Set function interface is also defined, and it uses size_t, which causes a function data type conflict. How can this error be resolved?