need help from anyone that know how to pair unity to microcontroller(STM32F4)

currently i got stuck on my own final project for thesis. i’m new on unity, but i want to develop unity and pair it to microcontroller(STM32f4). My project required a protocol for unity and STM32f4 connection. I don’t know anything about protocol, and how to make it. So, maybe there is someone can give me an answer or sample, so i can try it.

Thank you in advance

Are you on the right Unity? I’d have expected this type of project to be using the Unity Test Framework, not Unity 3D. Unless you are using the STM32 to make an input controller or something, in which case you probably want to look at the USB libraries for the STM32 to make it appear as a keyboard or joystick to the OS.

any updates?