zephyr

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Gerard Marull-Paretas d342e4c4c1 linker: update files with <zephyr/...> include prefix Linker files were not migrated with the new <zephyr/...> prefix. Note that the conversion has been scripted, refer to #45388 for more details. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>		2022-05-09 12:45:29 -04:00
..
src	linker: update files with <zephyr/...> include prefix	2022-05-09 12:45:29 -04:00
CMakeLists.txt
prj.conf
README.rst	samples: basic: fade_led: use pwm_dt_spec	2022-04-28 11:29:38 +02:00
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. The PWM
period is taken from Devicetree. It should be fast enough to be above the
flicker fusion threshold.

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.