Hi JL,
While you can certainly read and edit the code that is produced from Simulink Coder or Embedded Coder, we generally do not recommend manual changes to the code. If the model changes and you regenerate the code, your manual changes will be lost (or you will have to do them again).
From your post, it sounds like you want to "customize input/output parameters". I believe you should make the changes to the model such that these inputs, outputs, or parameters are easily accessible in workflows that use the generated code with no (or minimal) modifications.
- For modifying parameters, please read about Run-Time Parameters. This will help you see how to modify your model so that parameters can be tuned in the generated code.
- For inputs and outputs, they should appear at the top level of your model or Model Reference so that they are inputs/output to the generated code.
If you can tell us specifically what you want to do, we can guide you to more targeted resources. Ideally, you would not need to modify the generated code.
--Steve
