zephyr/samples/drivers/led_pca9633
Gerard Marull-Paretas 79e6b0e0f6 includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h>
As of today <zephyr/zephyr.h> is 100% equivalent to <zephyr/kernel.h>.
This patch proposes to then include <zephyr/kernel.h> instead of
<zephyr/zephyr.h> since it is more clear that you are including the
Kernel APIs and (probably) nothing else. <zephyr/zephyr.h> sounds like a
catch-all header that may be confusing. Most applications need to
include a bunch of other things to compile, e.g. driver headers or
subsystem headers like BT, logging, etc.

The idea of a catch-all header in Zephyr is probably not feasible
anyway. Reason is that Zephyr is not a library, like it could be for
example `libpython`. Zephyr provides many utilities nowadays: a kernel,
drivers, subsystems, etc and things will likely grow. A catch-all header
would be massive, difficult to keep up-to-date. It is also likely that
an application will only build a small subset. Note that subsystem-level
headers may use a catch-all approach to make things easier, though.

NOTE: This patch is **NOT** removing the header, just removing its usage
in-tree. I'd advocate for its deprecation (add a #warning on it), but I
understand many people will have concerns.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-09-05 16:31:47 +02:00
..
src includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h> 2022-09-05 16:31:47 +02:00
CMakeLists.txt
README.rst
app.overlay
prj.conf
sample.yaml

README.rst

.. _pca9633:

PCA9633: 4-Channel RGB
######################

Overview
********

This sample controls 4 LEDs connected to a PCA9633 driver, using the
following pattern:

 1. turn on LEDs
 2. turn off LEDs
 3. set the brightness to 50%
 4. turn off LEDs
 5. blink the LEDs
 6. turn off LEDs

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

Build the application for the :ref:`nucleo_f334r8_board` board, and connect
a PCA9633 LED driver on the bus I2C Arduino.

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/led_pca9633
   :board: nucleo_f334r8_board
   :goals: build
   :compact:

For flashing the application, refer to the Flashing section of the
:ref:`nucleo_f334r8_board` board documentation.

References
**********

- PCA9633: https://www.nxp.com/docs/en/data-sheet/PCA9633.pdf