After setting-up the esp-idf environment, execute idf.py build
from this
directory to build the example application.
This application assumes a string of 256 WS2812b LED, with the first LED's DIN connected to an ESP32 GPIO 27.
To create a project from this example, run:
idf.py create-project-from-example "zorxx/neopixel=1.0.9:unit_test"