Embedded Coder reusable function input order

Hi.

I am working with a team from another university writing some code that they need to integrate in the firmware for a micro controller. They are responsible for the low level firmware; I am responsible for the high level code. We agreed on an interface according to which the low level code would call my Simulink blocks compiled as resuable functions. I created an empty stub for each function so they would know the header for the reusable function and prepare the interface.

The issue is that depending on what I actually implement in the Simulink blocks the order of the parameters of the compiled reusable function changes. Is there a way to force/specify the order of the input parameters? This way I would be able to freely work on my Simulink code without messing the interface.

I am using 8.0.0.783 (R2012b)

Thanks for the support.

Matteo