nrfconnect · koffes · Mar 20, 2025 · Mar 10, 2025
@@ -12,6 +12,11 @@ add_compile_definitions(GATEWAY=2)
 
 find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
 
+# Test a configuration file option has been given
+if(NOT DEFINED EXTRA_CONF_FILE)
+    message(FATAL_ERROR "No configuration file specified, set -- -DEXTRA_CONF_FILE=<configuration file>")
+endif()
+
 project(NRF5340_AUDIO)
 
 string(TIMESTAMP NRF5340_AUDIO_CORE_APP_COMP_DATE "%a %b %d %H:%M:%S %Y")

@@ -5,6 +5,7 @@
 #
 
 CONFIG_TRANSPORT_BIS=y
+CONFIG_AUDIO_DEV=1
 
 ## ACL related configs ##
 CONFIG_BT_OBSERVER=y

@@ -5,6 +5,7 @@
 #
 
 CONFIG_TRANSPORT_BIS=y
+CONFIG_AUDIO_DEV=2
 
 CONFIG_BT_CAP_INITIATOR=y
 CONFIG_BT_AUDIO=y

@@ -98,6 +98,10 @@ The building command for running the script requires providing the following par
      - ``release``, ``debug``
      - | :ref:`nrf53_audio_app_configuration_files`
        | **Note:** For FOTA DFU, you must use :ref:`nrf53_audio_app_building_standard`.
+   * - Transport type (``-t``)
+     - Specifies the transport type.
+     - ``broadcast``, ``unicast``
+     - :ref:`nrf53_audio_app_overview_architecture`
    * - Device type (``-d``)
      - Specifies the device type.
      - ``headset``, ``gateway``, ``both``
@@ -107,7 +111,7 @@ For example, the following command builds headset and gateway applications using
 
 .. code-block:: console
 
-   python buildprog.py -c app -b debug -d both
+   python buildprog.py -c app -b debug -d both -t unicast
 
 The command can be run from any location, as long as the correct path to :file:`buildprog.py` is given.
 
@@ -132,9 +136,9 @@ The command for programming can look as follows:
 
 .. code-block:: console
 
-   python buildprog.py -c both -b debug -d both -p
+   python buildprog.py -c both -b debug -d both -t unicast -p
 
-This command builds the headset and the gateway applications with ``debug`` version of both the application core binary and the network core binary - and programs each to its respective core.
+This command builds the unicast headset and the gateway applications with ``debug`` version of both the application core binary and the network core binary - and programs each to its respective core.
 If you want to rebuild from scratch, you can add the ``--pristine`` parameter to the command (west's ``-p`` for cannot be used for a pristine build with the script).
 
 .. note::
@@ -143,7 +147,7 @@ If you want to rebuild from scratch, you can add the ``--pristine`` parameter to
 
    .. code-block:: console
 
-      python buildprog.py -c both -b debug -d both -p --recover_on_fail
+      python buildprog.py -c both -b debug -d both -t unicast -p --recover_on_fail
 
 Getting help
 ------------
@@ -247,17 +251,21 @@ The application supports the following custom configurations:
      - | Builds the debug version of the application with the features needed to perform DFU over Bluetooth LE, and includes bootloaders so that the applications on both the application core and network core can be updated.
        | See :ref:`nrf53_audio_app_fota` for more information.
 
+.. _nrf53_audio_app_configuration_select_build:
+
 Building the application
 ========================
 
 Complete the following steps to build the application:
 
 1. Choose the combination of build flags:
 
-   a. Choose the device type by using one of the following options:
+   a. Choose the device type by using one of the following :ref:`CMake options for extra Kconfig fragments <cmake_options>`:
 
-      * For headset device: ``-DCONFIG_AUDIO_DEV=1``
-      * For gateway device: ``-DCONFIG_AUDIO_DEV=2``
+      * For unicast headset: ``-DEXTRA_CONF_FILE=".\unicast_server\overlay-unicast_server.conf"``
+      * For unicast gateway: ``-DEXTRA_CONF_FILE=".\unicast_client\overlay-unicast_client.conf"``
+      * For broadcast headset: ``-DEXTRA_CONF_FILE=".\broadcast_sink\overlay-broadcast_sink.conf"``
+      * For broadcast gateway: ``-DEXTRA_CONF_FILE=".\broadcast_source\overlay-broadcast_source.conf"``
 
    #. Choose the application version (:ref:`nrf53_audio_app_building_config_files`) by using one of the following options:
 
@@ -269,7 +277,7 @@ Complete the following steps to build the application:
 
    .. code-block:: console
 
-      west build -b nrf5340_audio_dk/nrf5340/cpuapp --pristine -- -DCONFIG_AUDIO_DEV=1 -DFILE_SUFFIX=release
+      west build -b nrf5340_audio_dk/nrf5340/cpuapp --pristine -- -DEXTRA_CONF_FILE=".\unicast_server\overlay-unicast_server.conf" -DFILE_SUFFIX=release
 
    This command creates the build files for headset device directly in the :file:`build` directory.
    What this means is that you cannot create build files for all devices you want to program, because the subsequent commands will overwrite the files in the :file:`build` directory.
@@ -285,7 +293,7 @@ The following command example builds the application for :ref:`nrf53_audio_app_f
 
 .. code-block:: console
 
-   west build -b nrf5340_audio_dk/nrf5340/cpuapp --pristine -- -DCONFIG_AUDIO_DEV=1 -DFILE_SUFFIX=fota
+   west build -b nrf5340_audio_dk/nrf5340/cpuapp --pristine -- -DEXTRA_CONF_FILE=".\unicast_server\overlay-unicast_server.conf" -DFILE_SUFFIX=fota
 
 The command uses ``-DFILE_SUFFIX=fota`` to pick :file:`prj_fota.conf` instead of the default :file:`prj.conf`.
 It also uses the ``--pristine`` to clean the existing directory before starting the build process.

@@ -9,19 +9,6 @@ Configuring the nRF5340 Audio applications
 
 |config|
 
-By default, if you have not made any changes to :file:`.conf` files at :file:`applications/nrf5340_audio/`, the nRF5340 :ref:`build script <nrf53_audio_app_building>` builds the :ref:`unicast server (CIS) <nrf53_audio_unicast_server_app>` application in the CIS unidirectional mode as a headset (with :kconfig:option:`CONFIG_TRANSPORT_CIS` set to ``y`` and :kconfig:option:`CONFIG_AUDIO_DEV` set to ``1``).
-
-.. _nrf53_audio_app_configuration_select_build:
-
-Selecting gateway or headset build
-**********************************
-
-Given the nRF5340 Audio :ref:`application architecture <nrf53_audio_app_overview>`, the nRF5340 Audio applications can be built for :ref:`either the gateway or the headset role <nrf53_audio_app_overview_gateway_headsets>`:
-
-* The headset build is identified with :kconfig:option:`CONFIG_AUDIO_DEV` Kconfig option set to ``1``.
-  This is the default configuration.
-* The gateway build can be selected by adding :kconfig:option:`CONFIG_AUDIO_DEV` Kconfig option set to ``2`` to the :file:`prj.conf` file.
-
 .. _nrf53_audio_app_configuration_select_bidirectional:
 
 Selecting the CIS bidirectional communication
@@ -93,7 +80,7 @@ You can use one of the following options, depending on how you decide to build t
 
   .. code-block:: console
 
-     west build -b nrf5340_audio_dk/nrf5340/cpuapp --pristine -- -DCONFIG_AUDIO_DEV=1 -Dnrf5340_audio_SHIELD=nrf21540ek -Dipc_radio_SHIELD=nrf21540ek
+     west build -b nrf5340_audio_dk/nrf5340/cpuapp --pristine -- -DEXTRA_CONF_FILE=".\unicast_server\overlay-unicast_server.conf" -Dnrf5340_audio_SHIELD=nrf21540ek -Dipc_radio_SHIELD=nrf21540ek
 
 To set the TX power output, use the ``CONFIG_BT_CTLR_TX_PWR_ANTENNA`` and ``CONFIG_MPSL_FEM_NRF21540_TX_GAIN_DB`` Kconfig options in :file:`applications/nrf5340_audio/sysbuild/ipc_radio/prj.conf`.
 

@@ -107,13 +107,12 @@ def __build_cmd_get(cores: Core, device: AudioDevice, build: BuildType,
         raise Exception("Invalid core!")
 
     if device == AudioDevice.headset:
-        device_flag = "-DCONFIG_AUDIO_DEV=1"
         dest_folder = TARGET_DEV_HEADSET_FOLDER
     elif device == AudioDevice.gateway:
-        device_flag = "-DCONFIG_AUDIO_DEV=2"
         dest_folder = TARGET_DEV_GATEWAY_FOLDER
     else:
         raise Exception("Invalid device!")
+
     if build == BuildType.debug:
         release_flag = ""
         dest_folder /= TARGET_DEBUG_FOLDER
@@ -122,6 +121,9 @@ def __build_cmd_get(cores: Core, device: AudioDevice, build: BuildType,
         dest_folder /= TARGET_RELEASE_FOLDER
     else:
         raise Exception("Invalid build type!")
+
+    device_flag = ""
+
     if options.nrf21540:
         device_flag += " -Dnrf5340_audio_SHIELD=nrf21540ek"
         device_flag += " -Dipc_radio_SHIELD=nrf21540ek"
@@ -139,13 +141,14 @@ def __build_cmd_get(cores: Core, device: AudioDevice, build: BuildType,
     if options.transport == Transport.broadcast.name:
         if device == AudioDevice.headset:
             overlay_flag = f" -DEXTRA_CONF_FILE={BROADCAST_SINK_OVERLAY}"
-        elif device == AudioDevice.gateway:
+        else:
             overlay_flag = f" -DEXTRA_CONF_FILE={BROADCAST_SOURCE_OVERLAY}"
-    elif options.transport == Transport.unicast.name:
+    else:
         if device == AudioDevice.headset:
             overlay_flag = f" -DEXTRA_CONF_FILE={UNICAST_SERVER_OVERLAY}"
-        elif device == AudioDevice.gateway:
+        else:
             overlay_flag = f" -DEXTRA_CONF_FILE={UNICAST_CLIENT_OVERLAY}"
+
     if os.name == 'nt':
         release_flag = release_flag.replace('\\', '/')
     if pristine:
@@ -312,7 +315,7 @@ def __main():
     parser.add_argument(
         "-t",
         "--transport",
-        type=str,
+        required = True,
         choices=[i.name for i in Transport],
         default=Transport.unicast.name,
         help="Select the transport type",

@@ -5,6 +5,7 @@
 #
 
 CONFIG_BT_CENTRAL=y
+CONFIG_AUDIO_DEV=2
 
 CONFIG_BT_GATT_DYNAMIC_DB=y
 CONFIG_BT_GATT_CLIENT=y

@@ -4,6 +4,8 @@
 # SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 #
 
+CONFIG_AUDIO_DEV=1
+
 CONFIG_BT_GATT_AUTO_DISCOVER_CCC=y
 CONFIG_BT_GATT_AUTO_RESUBSCRIBE=n
 CONFIG_BT_GATT_AUTO_SEC_REQ=n

@@ -29,7 +29,13 @@ Samples and applications
 
 This section describes the changes related to samples and applications.
 
-|no_changes_yet_note|
+nRF5340 Audio applications
+--------------------------
+
+.. toggle::
+
+   * The :ref:`nrf53_audio_app` :ref:`nrf53_audio_app_building_script` now requires the transport (``-t/--transport``) type to be included.
+   * The :ref:`nrf53_audio_app` :ref:`nrf53_audio_app_building_standard` now requires an extra :ref:`CMake option to provide extra Kconfig fragments <cmake_options>` to select the device type.
 
 Libraries
 =========