# About
  
  This is a test application for the MY9221 LED controller driver, which is found
  on the Seeed Studio Grove LED bar module [1].
  
  # Details
  
  For this test application you can use e.g. the Groove LED bar which has 10 LEDs.
  The default settings in the Makefile are suited for the Grove ledbar, adapt them
  as needed for any other device or number of LEDs.
  
  The test application runs several test sequence, first toggling all LEDs
  one by one, and secondly setting all LEDs to 33%, 66%, and 100% brightness.
  Finally all LEDs are turned of again.
  
  [1]: https://www.seeedstudio.com/Grove-LED-Bar-v2.0-p-2474.html