Adafruit_GFX-compatible library for NeoPixel matrices and grids using SPI DMA on ARM Cortex-M0 dev boards (Adafruit Feather M0, Circuit Playground Express, Arduino Zero, etc.).
Requires Adafruit_GFX, Adafruit_NeoPixel, Adafruit_ZeroDMA and Adafruit_NeoPixel_ZeroDMA libraries.