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zephyr/samples/drivers/led_pwm
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Maciej Perkowski 87bb385134 tests: pwm: led: Fix pwm_led sample 
The PR fixes the pwm_led sample:
- now test doesn't rely on any specific device name
- Logs which are scanned with regex in the test are printed
  only after a command passes (before failures were not
  affecting the test verdict)
- If 1 sec cycle is not supported appropriate info is printed
  and won't cause the test to failed
- Changed second "Turned off" msg so regex doesn't mix it with the
  the first one.

Fixes #35524

Signed-off-by: Maciej Perkowski <Maciej.Perkowski@nordicsemi.no>
2021-05-25 08:07:25 -04:00
..
src tests: pwm: led: Fix pwm_led sample 2021-05-25 08:07:25 -04:00
CMakeLists.txt
prj.conf
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.