zephyr/samples/boards/nrf/nrf_led_matrix
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
prj.conf drivers: display: Remove unnecessary Kconfig settings 2022-08-09 12:27:44 +02:00
sample.yaml

README.rst

.. _nrf_led_matrix_sample:

nRF LED matrix sample
#####################

Overview
********

This is a simple application intended to present the nRF LED matrix display
driver in action and to serve as a test ensuring that this driver is buildable
for both the :ref:`bbc_microbit_v2` and :ref:`bbc_microbit` boards.

Requirements
************

The sample has been tested on the bbc_microbit_v2 and bbc_microbit boards,
but it could be ported to any board with an nRF SoC and the proper number
of GPIOs available for driving a LED matrix. To do it, one needs to add an
overlay file with the corresponding ``"nordic,nrf-led-matrix"`` compatible
node.

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

The code can be found in :zephyr_file:`samples/boards/nrf/nrf_led_matrix`.

To build and flash the application:

.. zephyr-app-commands::
   :zephyr-app: samples/boards/nrf/nrf_led_matrix
   :board: bbc_microbit_v2
   :goals: build flash
   :compact: