zephyr

History

Torsten Rasmussen 1cccc8a8fe cmake: increase minimal required version to 3.20.0 Move to CMake 3.20.0. At the Toolchain WG it was decided to move to CMake 3.20.0. The main reason for increasing CMake version is better toolchain support. Better toolchain support is added in the following CMake versions: - armclang, CMake 3.15 - Intel oneAPI, CMake 3.20 - IAR, CMake 3.15 and 3.20 Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>		2021-08-20 09:47:34 +02:00
..
boards	…
src	samples: led_lp503x: drop device_get_binding/DT_INST	2021-08-19 17:20:21 -04:00
CMakeLists.txt	cmake: increase minimal required version to 3.20.0	2021-08-20 09:47:34 +02:00
README.rst	…
prj.conf	…
sample.yaml	…

README.rst

.. _lp503x:

LP5030/6: 10 or 12 RGB channels
###############################

Overview
********

This sample controls up to 12 LEDs connected to a LP503x driver.

First, for each LED information is retrieved using the led_get_info syscall
and printed in the log messages. Next, from an infinite loop, a test pattern
(described below) is applied to all the LEDs simultaneously (using the
led_write_channels syscall) and then to each LED one by one (using the
led_set_{brightness,color} syscalls).

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

For all the LEDs first (using channel API) and then for each LED one by one:

For each color in red green blue white yellow purple cyan orange:

- set the color
- turn on
- turn off
- set the brightness gradually to the maximum level
- turn off

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

This sample can be built and executed on boards with an I2C LP5030/6 LED driver
connected. A node matching the "ti,lp503x" binding should be defined in the
board DTS files.

As an example this sample provides a DTS overlay for the :ref:`lpcxpresso11u68`
board (:file:`boards/lpcxpresso11u68.overlay`). It assumes that a I2C LP5030
LED driver (with 10 LEDs wired) is connected to the I2C0 bus at address 0x30.

References
**********

- LP503x: https://www.ti.com/lit/ds/symlink/lp5036.pdf