Hi Federico,
It sounds like you're working with external code that utilizes custom struct definitions from a header file, and you're looking to streamline integration by generating code that directly uses these structs. A practical approach to achieve this in Simulink is by leveraging buses. You can modify your model so that the variables intended to match the external structs are represented using buses. These buses can be set up to ensure that the generated code aligns with your requirements.
Please refer to the following documentation. It has the step by step information on generating code that matches the external data types:
Hope this Helps!
