zephyr

History

Carles Cufi f49150cab6 arch: arm: nrf: Rename nrf5 SoC Family to nrf Upcoming Nordic ICs that share many of the peripherals and architecture with the currently supported nRF5x ones are no longer part of the nRF5 family. In order to accomodate that, rename the SoC family from nrf5 to nrf, so that it can contain all of the members of the wider Nordic family. Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>		2018-03-20 11:57:14 +01:00
..
src	arch: arm: nrf: Rename nrf5 SoC Family to nrf	2018-03-20 11:57:14 +01:00
CMakeLists.txt	Introduce cmake-based rewrite of KBuild	2017-11-08 20:00:22 -05:00
README.rst	samples: basic: Convert doc to CMake	2017-11-12 21:13:23 -05:00
prj.conf	…
sample.yaml	samples: pwm: depend on boards supporting PWM	2017-12-28 20:24:29 -05:00

README.rst

.. _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
******

Arduino 101 and Quark D2000 CRB
===============================
You will need to connect the LED to ground and PWM0 via
the shield. You may need a current limiting resistor. See
your LED datasheet.

Nucleo_F401RE and Nucleo_L476RG
===============================
Connect PWM2(PA0) to LED

Nucleo_F103RB
=============
Connect PWM1(PA8) to LED

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 sample can be built for multiple boards, in this example we will build it
for the arduino_101 board:

.. zephyr-app-commands::
   :zephyr-app: samples/basic/fade_led
   :board: arduino_101
   :goals: build flash
   :compact: