zephyr/samples/basic/fade_led/README.rst
Andrzej Głąbek 4253eae005 boards: nrf52840_pca10056: Rename board to nrf52840dk_nrf52840
The nRF52840 DK board target, so far known as nrf52840_pca10056,
is renamed to nrf52840dk_nrf52840.
Its documentation and all references to its name in the tree are
updated accordingly. Overlay and configuration files specific to
this board are also renamed, to match the new board name.

Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
2020-03-27 09:14:08 +01:00

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.. _fade-led-sample:
PWM: Fade LED
#############
Overview
********
This is a sample app which fades a LED using PWM.
The LED will start from dark and increases its
brightness gradually for 10 seconds. Then, the
brightness reduces gradually for 10 seconds and
finally the LED becomes dark again. The LED will
repeat this cycle for ever.
Wiring
******
Nucleo_F401RE, Nucleo_L476RG
============================
Connect PWM2(PA0) to LED
Nucleo_F103RB
=============
Connect PWM1(PA8) to LED
Nucleo_L496ZG
=============
No special board setup is necessary because there are three on-board LEDs (red,
green, blue) connected to the Nucleo's PWM.
Hexiwear K64
============
No special board setup is necessary because there is an on-board RGB LED
connected to the K64 PWM.
nrf52840dk_nrf52840
===================
No special board setup is necessary because there is an on-board LED connected.
Building and Running
********************
This sample can be built for multiple boards, in this example we will build it
for the nrf52840dk_nrf52840 board:
.. zephyr-app-commands::
:zephyr-app: samples/basic/fade_led
:board: nrf52840dk_nrf52840
:goals: build flash
:compact: