In brief, I am trying to extend the capabilities of IoTCore by making some GPIO available which are not available in the default FFU (for the RPi2/3). I have followed the instructions here:
https://docs.microsoft.com/en-us/windows/uwp/devices-sensors/enable-usermode-access
And can see the drivers and RhProxy list under devcon.exe as expected.
My ASL file compiles ok, but appears to have no effect on the system when moved to C:\Windows\system32 or loaded using asl.exe /loadtable
Is there a community on the web somewhere that can advise on these sorts of issues?