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Gerard Marull-Paretas 5c61e4444b samples: fade_led/blinky_pwm: add pwm-leds compat check to filter While the pwm-led0 alias may exist, it could happen that the node with pwm-leds compatible is disabled, making the sample fail compilation. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>		2022-04-07 09:35:16 +02:00
..
src
CMakeLists.txt
prj.conf
README.rst
sample.yaml	samples: fade_led/blinky_pwm: add pwm-leds compat check to filter	2022-04-07 09:35:16 +02:00

README.rst

.. _fade-led-sample:

Fade LED
########

Overview
********

This application "fades" a LED using the :ref:`PWM API <pwm_api>`.

The LED starts off increases its brightness until it is fully or nearly fully
on. The brightness then decreases until the LED is off, completing on fade
cycle. Each cycle takes 2.5 seconds, and the cycles repeat forever.

Requirements and Wiring
***********************

This sample has the same requirements and wiring considerations as the
:ref:`pwm-blinky-sample`.

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

To build and flash this sample for the :ref:`nrf52840dk_nrf52840`:

.. zephyr-app-commands::
   :zephyr-app: samples/basic/fade_led
   :board: nrf52840dk_nrf52840
   :goals: build flash
   :compact:

Change ``nrf52840dk_nrf52840`` appropriately for other supported boards.

After flashing, the sample starts fading the LED as described above. It also
prints information to the board's console.