Blade detect/Blade ID

[baldusi]

Please read this post by Proff:

Setting Blade ID with Proffieboard V3.9

It’s not the compiler that knows, it is proffieos: If no BLADE_ID_CLASS is defined, it uses a default which depends on what board you are compiling for.

You don’t have to do anything: ProffieOS already knows which BLADE_ID_CLASS to use, which pins to use and how to do Blade ID. Just use Data1 and that’s it.