zephyr

History

Andrew Featherstone 6a47f724dc samples: drivers: led: pwm: Add rpi_pico2 board The RP2350's PWM peripheral is largely unchanged from the RP2040's, but the higher clock frequency means the long blink delay must be lower. Signed-off-by: Andrew Featherstone <andrew.featherstone@gmail.com>		2024-12-23 23:57:57 +01:00
..
boards	samples: drivers: led: pwm: Add rpi_pico2 board	2024-12-23 23:57:57 +01:00
src	samples: led: pwm: add decreasing brightness logic	2024-12-17 09:48:40 +01:00
CMakeLists.txt
Kconfig	samples: drivers: led: pwm: Makes blink and fade times configurable	2024-10-10 10:07:47 +02:00
prj.conf
README.rst	samples: led: pwm: add decreasing brightness logic	2024-12-17 09:48:40 +01:00
sample.yaml	samples: led: pwm: add decreasing brightness logic	2024-12-17 09:48:40 +01:00

README.rst

.. zephyr:code-sample:: led-pwm
   :name: LED PWM
   :relevant-api: led_interface

   Control PWM LEDs using the LED API.

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
- Decreasing 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.