Greetings,
I have created a multi-part tutorial how to use the WS2812B (aka Adafruit NeoPixel) LED stripes and boards with the FRDM-K64F board:
The tutorials go though the hardware setup, Kinetis Design Studio, debugging the first project, using the Kinetis SDK, how to set up the Flex Timer Module (FTM) and how to use the Kinetis eDMA to generate the timing and bitstream to drive the WS2812B LED stripes.
I hope you find this useful, and you learn from this for your next design.
Happy Kinetising :-)
Fantastic writeup and explanation - thanks Eric