zephyr

History

Gerard Marull-Paretas a202341958 devices: constify device pointers initialized at compile time Many device pointers are initialized at compile and never changed. This means that the device pointer can be constified (immutable). Automated using: ``` perl -i -pe 's/const struct device \(?!const)(.)= DEVICE/const struct device const $1= DEVICE/g' /.c ``` Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>		2022-08-22 17:08:26 +02:00
..
boards	samples: drivers: audio: dmic: use pinctrl for nrf board overlay	2022-03-21 15:09:28 +01:00
src	devices: constify device pointers initialized at compile time	2022-08-22 17:08:26 +02:00
CMakeLists.txt	cmake: Update cmake_minimum_required to 3.20.0	2022-07-04 10:18:45 +02:00
prj.conf
README.rst
sample.yaml

README.rst

.. _dmic_sample:

DMIC Sample
###########

Overview
********

This is a very simple application intended to show how to use the Audio DMIC
API and also to be an aid in developing drivers to implement this API.
It performs two PDM transfers with different configurations (using one channel
and two channels) but does not in any way process the received audio data.

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

The device to be used by the sample is specified by defining a devicetree node
label named ``dmic_dev``.
The sample has been tested on :ref:`nrf52840dk_nrf52840` (nrf52840dk_nrf52840)
and :ref:`nrf5340dk_nrf5340` (nrf5340dk_nrf5340_cpuapp), and provides overlay
files for both of these boards.

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

The code can be found in :zephyr_file:`samples/drivers/audio/dmic`.

To build and flash the application:

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/audio/dmic
   :board: nrf52840dk_nrf52840
   :goals: build flash
   :compact: