# About
  
  This is a test application for the Seeed Studio Grove LED bar module [1].
  
  # Details
  
  This test application will initialize a Groove LED bar with the configuration
  as specified in the `grove_ledbar_params.h` file. To connect the LED bar with
  your board use the following pinout:
  
  - Pin GND is connected directly to GND.
  - Pin VCC is connected directly to VCC +3.3V, or 5V if your board allows that.
  - Pin DCKI is the clock pin and is connected to a free GPIO
  - Pin DI is the data pin and is connected to a free GPIO, too
  
  for the 2 latter pins note the port and pin number and adapt the Makefile
  accordingly.
  
  The test application will light up the LED bar several times, running from 0%
  up to 100% and down to 0% again.
  
  [1]: https://www.seeedstudio.com/Grove-LED-Bar-v2.0-p-2474.html