HI Benjamin,
the embOS Simulation simulates 100% the embOS API and can be adapted to your requirements.
It is possible to use the complete Windows API inside the simulation, thus you can easily communicate with other applications or hardware.
I am not sure if I understood the last question correctly but I guess it's about using the same application in simulation and target hardware?
Please be aware only the embOS API is simulated but not e.g. the STM32 peripherals.
Anyhow we can help you to setup a perfect simulation.
If you like you can contact us directly and we'll setup conference call and discuss everything in detail.
I will send you a separate email with our contact details.
Best regards,
Til