zephyr

History

Ioannis Konstantelias 5151e8a094 boards: nucleo_l496zg: Add pwm mapping and RTC Supported PWM at pins A0, D3, D5 and D6 which are also Arduino compatible. Also the onboard red LED can be used with PWM. The basic/{fade_led, blink_led} samples to apply to this board seemlessly and operate on the onboard red LED. Also supported RTC. Signed-off-by: Ioannis Konstantelias <ikonstadel@gmail.com>		2019-01-23 09:18:35 -06:00
..
src	drivers: pwm: nrf: Modify fade_led PWM example, use new HW drv	2018-12-11 15:18:14 +01:00
CMakeLists.txt	cmake: increase minimal required version to 3.13.1	2019-01-03 11:51:29 -05:00
README.rst	boards: nucleo_l496zg: Add pwm mapping and RTC	2019-01-23 09:18:35 -06:00
nrf52_pca10040.overlay	drivers: pwm: nrf: Modify fade_led PWM example, use new HW drv	2018-12-11 15:18:14 +01:00
prj.conf	…
sample.yaml	boards: nucleo_l496zg: Add pwm mapping and RTC	2019-01-23 09:18:35 -06:00

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 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.


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: nrf52840_pca10056
   :goals: build flash
   :compact: