zephyr

History

Kumar Gala 4e93b77552 samples: Convert DT_ALIAS_* to new DT_ALIAS() macro Convert DT_ALIAS_* defines to use DT_ALIAS() plus other macros from include/devicetree.h. Signed-off-by: Kumar Gala <kumar.gala@linaro.org>		2020-05-04 15:28:20 -05:00
..
src	samples: Convert DT_ALIAS_* to new DT_ALIAS() macro	2020-05-04 15:28:20 -05:00
CMakeLists.txt	…
README.rst	…
prj.conf	…
sample.yaml	…

README.rst

.. _rgb-led-sample:

PWM: RGB LED
############

Overview
********

This is a sample app which drives a RGB LED using PWM.

There are three single-color component LEDs in an RGB LED. Each component LED
is driven by a PWM port where the pulse width is changed from zero to a fusion
flicker threshold (the minimum flicker rate where the LED is perceived as being
steady), causing each component LED to step from dark to max brightness. Three
**for** loops (one for each component LED) generate a gradual range of color
changes from the RGB LED, and the sample repeats forever.

Wiring
******

Hexiwear K64
============
No special board setup is necessary because there is an on-board RGB LED
connected to the K64 PWM.

Building and Running
********************

This samples does not output anything to the console.  It can be built and
flashed to a board as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/basic/rgb_led
   :board: hexiwear_k64
   :goals: build flash
   :compact: