zephyr

History

Kumar Gala 0e1a7e0241 drivers: led: Remove unnecessary Kconfig settings Having the LED device enabled in devicetree will now get the driver enabled by default when CONFIG_LED=y is set. So we can remove setting driver enabling Kconfig values in various .conf files. Signed-off-by: Kumar Gala <galak@kernel.org>		2022-08-11 17:46:43 +02:00
..
boards	…
src	samples: drivers: led_pwm: Update driver to remove DEVICE_DT_GET	2022-07-23 11:39:11 -05:00
CMakeLists.txt	…
README.rst	…
prj.conf	drivers: led: Remove unnecessary Kconfig settings	2022-08-11 17:46:43 +02:00
sample.yaml	samples: drivers: led_pwm: Update driver to remove DEVICE_DT_GET	2022-07-23 11:39:11 -05:00

README.rst

.. _led_pwm:

LED PWM sample application
##########################

Overview
********

This sample allows to test the led-pwm driver. The first "pwm-leds" compatible
device instance found in DT is used. For each LEDs attached to this device
(child nodes) the same test pattern (described below) is executed. The LED API
functions are used to control the LEDs.

Test pattern
============

For each PWM LEDs (one after the other):

- Turning on
- Turning off
- Increasing brightness gradually
- Blinking on: 0.1 sec, off: 0.1 sec
- Blinking on: 1 sec, off: 1 sec
- Turning off

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

This sample can be built and executed on all the boards with PWM LEDs connected.
The LEDs must be correctly described in the DTS: the compatible property of the
device node must match "pwm-leds". And for each LED, a child node must be
defined and the PWM configuration must be provided through a "pwms" phandle's
node.