I am working in a project that seeks to control two step motors with a proprietary acoustics measuring software. This measuring software creates a measuring routine, that is, the information that controls the movement of the two step motors. It moves them and measures, it moves them and measures, etc, everything in real time.

The problem is that this software works with it's own step motors and I would like to use "generic" ones (controlled by microprocessor), so it would save a lot of money. The thing here is, of course, I can't access these routine when it's created in real time. My idea is to "pipe" somehow the output from the measuring software to the microcontroller (as well processing it when the datatype differs).

My question is, is there any way "to read" what a proprietary software is doing? Is there a way to "pipe" this stream with the input of a microcontroller?

Any help will be appreciated!