.. zephyr:board:: nrf5340_audio_dk

Overview

The nRF5340 Audio DK (PCA10121) is designed for showcasing, developing and experimenting with Bluetooth® LE Audio.

You can use this board for developing LE-Audio-compatible applications that support Auracast™, connected isochronous streams (CIS) and broadcast isochronous streams (BIS), and offer support for acting as a audio source, audio sink and source + sink.

Zephyr uses the nrf5340_audio_dk/nrf5340 board configuration for building for the nRF5340 Audio DK.

Hardware

The nRF5340 Audio DK comes with the following hardware features:

nRF5340 dual-core SoC based on the Arm® Cortex®-M33 architecture
CS47L63 Low-Power Audio DSP with mono differential headphone driver
nPM1100 Ultra-small form-factor Power Management IC
On-board digital microphone
On-board power measurement
SD card slot
Built-in debugger
Stereo analog input using 3.5 mm jack
USB soundcard capability

More information about the board can be found at the nRF5340 Audio DK website. The nRF5340 Audio DK hardware guide contains the processor's information and the datasheet.

nRF5340 SoC

The nRF5340 Audio DK is built around the nRF5340 SoC, which has the following characteristics:

A full-featured Arm Cortex-M33F core with DSP instructions, FPU, and Armv8-M Security Extension, running at up to 128 MHz, referred to as the application core.
A secondary Arm Cortex-M33 core, with a reduced feature set, running at a fixed 64 MHz, referred to as the network core.

The nrf5340_audio_dk/nrf5340/cpuapp build target provides support for the application core on the nRF5340 SoC. The nrf5340_audio_dk/nrf5340/cpunet build target provides support for the network core on the nRF5340 SoC.

The nRF5340 Audio DK hardware guide_ contains the processor's information and the datasheet.

Supported Features

.. zephyr:board-supported-hw::

See :zephyr:board:nrf5340dk and nRF5340 Audio DK hardware guide_ for a complete list of nRF5340 Audio DK board hardware features.

Programming and Debugging

.. zephyr:board-supported-runners::

Flashing

Follow the instructions in the :ref:nordic_segger page to install and configure all the necessary software. Further information can be found in :ref:nordic_segger_flashing. Then you can build and flash applications as usual (:ref:build_an_application and :ref:application_run for more details).

.. warning::

The nRF5340 has a flash read-back protection feature. When flash read-back protection is active, you will need to recover the chip before reflashing. If you are flashing with :ref:west <west-build-flash-debug>, run this command for more details on the related --recover option:

.. code-block:: console

  west flash -H -r nrfutil --no-rebuild

.. note::

Flashing and debugging applications on the nRF5340 Audio DK requires upgrading the nRF Command Line Tools to version 10.12.0. Further information on how to install the nRF Command Line Tools can be found in :ref:nordic_segger_flashing.

Debugging

Refer to the :ref:nordic_segger page to learn about debugging Nordic boards with a Segger IC.

References

.. target-notes::

.. _nRF5340 Audio DK website: https://www.nordicsemi.com/Products/Development-hardware/nrf5340-audio-dk .. _nRF5340 Audio DK hardware guide: https://docs.nordicsemi.com/bundle/ug_nrf5340_audio/page/UG/nrf5340_audio/intro.html