hj park 
Hi FriendlyArm, I bought Neopixel from Adafruit and bought NanoPi-M3 from FriendlyArm. I have no RaspberryPi and need to port Adafruit's WS2812 driver into NanoPi-M3. You can get the source codes from here.. git clone https://github.com/jgarff/rpi_ws281x.git and, you can find how to use this code on RaspberryPi => https://learn.adafruit.com/neopixels-on-raspberry-pi/software I installed rpi_ws281x.git on NanoPi-M3(Debian) and changed the PIO number in "examples/strandtest.py" (I connected Pin33(GPIOC13/PWM1 with Neopixel Din and put the PIO number as 77) and run but faced "DMA error: b6e6f558". I think it is due to the different DMA address & offset and need to know about NanoPi-M3 SoC. but, I don't have any data of it.. so, I need your help for this project.. please see the source codes, and let me know what I have to fix for Nano-pi M3. it is very important for me, and need your help asap.. thanks..
