Did anyone port FastLED to RPi? At least for two wire chipsets? Would it be difficult?
Not FastLED but her are my libs. This will drive SK6812/WS2812/Neopixels on an Rpi https://github.com/leonyuhanov/SK6812viaSPI . This one will drive APA102/SK9822 https://github.com/leonyuhanov/rpi_apa102driver
Search the archives. It was ported a while ago, and works well for APA102. I’m using it today, and is nice to have. Sorry, I’m at work, and can’t find the link right now.