Stepper motor control from Delphi XE1

I need to control a stepper motor from a Windows program written in Embarcadero Delphi XE1 on an ODYSSEY - X86J4105 single board computer.
The ODYSSEY - X86J4105 single board computer has an coprocessor Arduino Core (ATSAMD21G18). Probably, it is possible to control the stepper motor driver board through it?
Question from a dummy: how to contact the Arduino Core (ATSAMD21G18) coprocessor (for example, send commands “number of steps motor” and “motor rotation direction”)?

In addition: how to access the Arduino Core coprocessor (ATSAMD21G18) from a Windows program written in Embarcadero Delphi XE1 and running on the main processor Intel® Celeron® J4105, Quad-Core 1.5-2.5GHZ?