zephyr

History

Joep Buruma 91f659d70a samples: led_pwm: add overlay for rpi_pico board Add an overlay for rpi_pico board to the led_pwm sample. This board only supports fairly high pwm frequencies so the blinking of the LED is not supported. Turning it on/off and fading is. Signed-off-by: Joep Buruma <burumaj50@gmail.com>		2022-07-07 15:17:26 +02:00
..
boards	samples: led_pwm: add overlay for rpi_pico board	2022-07-07 15:17:26 +02:00
src	samples: migrate includes to contain <zephyr/...> prefix	2022-05-06 11:29:59 +02:00
CMakeLists.txt	cmake: increase minimal required version to 3.20.0	2021-08-20 09:47:34 +02:00
prj.conf	samples: drivers: add test sample for the PWM LED driver	2020-10-28 10:44:46 -05:00
README.rst	samples/drivers: led_pwm: Fixes for device testing	2021-01-18 19:11:43 +01:00
sample.yaml	tests: pwm: led: Fix pwm_led sample	2021-05-25 08:07:25 -04:00

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.