zephyr

History

Erwan Gouriou 23bb56820e samples/drivers: led_pwm: Fixes for device testing Modify led_pwm sample in order to make it usable in device testing: - Remove parenthesis from the logs as they prevent use of regex - Add a harness_config multiline regex in order to enable verdict generation - Update README Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>		2021-01-18 19:11:43 +01:00
..
src	samples/drivers: led_pwm: Fixes for device testing	2021-01-18 19:11:43 +01:00
CMakeLists.txt	…
README.rst	samples/drivers: led_pwm: Fixes for device testing	2021-01-18 19:11:43 +01:00
prj.conf	…
sample.yaml	samples/drivers: led_pwm: Fixes for device testing	2021-01-18 19:11:43 +01:00

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.