zephyr

History

Martí Bolívar 5be0d00d41 treewide: remove unnecessary DT GPIO/PWM flags checks Now that the relevant APIs generalize properly for bindings without flags, we can remove some special case checks from the tree. I couldn't find any more, but I did this kind of quickly, so it's possible I missed some. Signed-off-by: Martí Bolívar <marti.bolivar@nordicsemi.no>		2020-08-04 07:35:26 -05:00
..
src	treewide: remove unnecessary DT GPIO/PWM flags checks	2020-08-04 07:35:26 -05:00
CMakeLists.txt	samples: make find_package(Zephyr...) REQUIRED	2020-05-29 10:47:25 +02:00
README.rst	samples: fade_led: Correct the sample name in the docs	2020-06-09 10:24:43 -05:00
prj.conf	…
sample.yaml	…

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.