Thanks for your reply! I checked the DTS file you referred to and indeed found some lines on “led@0red”, “led@0green”, and “led@0blue”; in my eyes this describes a single multicolor LED (as available on HiFive1 board), but Learn Inventor features a matrix of 48 multicolor LEDs, so I still lack information on how to control these.
In metal-platform.h I only see a macro to enable LED driver code, but no specifics on LED matrix control.
I also checked freedeom e sdk, but I can only find references to the single color LED mentioned above.
As HiFive1 Rev B and Learn Inventor are similar, but not identical boards, I would expect some way to distinguish between both in FreeRTOS or freedom e sdk code, but I don’t see any macros for this purpose or even a dedicated board support package for Learn Inventor.
Could it be that dedicated support for Learn Inventor-specific peripherals such as LED matrix or temperature sensor are simply still missing?
Thanks for any further help!