zephyr

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History

Kumar Gala ab439ca7fd samples: basic: limit board.h to where its needed For blink_led, fade_led, and rgb_led, we only need board.h for the hexiwear_k64 board. Remove other references to board.h and only include it if we are building on hexiwear_k64 Signed-off-by: Kumar Gala <kumar.gala@linaro.org>		2018-11-01 13:15:18 +01:00
..
src	samples: basic: limit board.h to where its needed	2018-11-01 13:15:18 +01:00
CMakeLists.txt	samples, tests: Use semi-accurate project names	2018-10-27 21:31:25 -04:00
prj.conf	driver: pwm: use new logger	2018-10-08 17:49:12 -04:00
README.rst
sample.yaml

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: