zephyr

History

Charles E. Youse 57b46bbc85 soc/x86/intel_quark: remove support for Quark D2000 SoC Removed Quark D2000 SoC files and first-order related DT bindings. A few config options have been moved from the CONFIG_* space to the DT_* space, as they were defined in the D2000 Kconfig files and "leaked" into the other Quark trees. Signed-off-by: Charles E. Youse <charles.youse@intel.com>		2019-06-25 08:06:43 -04:00
..
src	soc/x86/intel_quark: remove support for Quark D2000 SoC	2019-06-25 08:06:43 -04:00
CMakeLists.txt	license: cleanup: add SPDX Apache-2.0 license identifier	2019-04-07 08:45:22 -04:00
README.rst	boards/x86/quark_d2000_crb: drop support for Quark D2000 dev board	2019-06-25 08:06:43 -04:00
prj.conf	…
sample.yaml	boards/x86/quark_d2000_crb: drop support for Quark D2000 dev board	2019-06-25 08:06:43 -04:00

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
******

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.

nrf52840_pca10056
=================
No special board setup is necessary because there is an on-board LED connected.

Arduino 101
===========
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.


Building and Running
********************

This sample can be built for multiple boards, in this example we will build it
for the nrf52840_pca10056 board:

.. zephyr-app-commands::
   :zephyr-app: samples/basic/fade_led
   :board: nrf52840_pca10056
   :goals: build flash
   :compact: