samples: matter: Changed window covering to be SED by default

Changed Window Covering sample configuration to use the SED
configuration by default. The SSED can be enabled optionally
using dedicated .conf file.

Signed-off-by: Kamil Kasperczyk <kamil.kasperczyk@nordicsemi.no>

Author: kkasperczyk-no

doc/nrf/includes/matter/introduction/sleep_thread_ssed_sit.txt

@@ -86,7 +86,7 @@ The following table lists the default TX power values.
 |                                                                         +--------------------------+------------------------------------------------------+-----------------------------------------------------------------+
 |                                                                         | nrf54lm20dk              | 0                                                    | 0                                                               |
 +-------------------------------------------------------------------------+--------------------------+------------------------------------------------------+-----------------------------------------------------------------+
-| :ref:`Window Covering (SSED) <matter_window_covering_sample>`           | nrf52840dk               | 0                                                    | 0                                                               |
+| :ref:`Window Covering (SED) <matter_window_covering_sample>`            | nrf52840dk               | 0                                                    | 0                                                               |
 |                                                                         +--------------------------+------------------------------------------------------+-----------------------------------------------------------------+
 |                                                                         | nrf5340dk                | 0                                                    | 0                                                               |
 |                                                                         +--------------------------+------------------------------------------------------+-----------------------------------------------------------------+

doc/nrf/protocols/matter/getting_started/transmission_power.rst

@@ -52,6 +52,10 @@ Matter
 
      For more information on how to configure partitions using DTS and how to migrate your existing configuration to DTS, see the :ref:`migration_partitions` page.
 
+   * The :ref:`matter_window_covering_sample` sample now uses the Thread Sleepy End Device (SED) device type by default.
+     You can enable the Thread Synchronized Sleepy End Device (SSED) device type as an optional feature.
+     To enable the Thread SSED support, add the ``-DEXTRA_CONF_FILE=ssed.conf`` extra argument to the build command.
+
 .. _migration_3.4_recommended:
 
 Recommended changes

doc/nrf/releases_and_maturity/migration/migration_guide_3.4.rst

@@ -403,10 +403,17 @@ Keys samples
 Matter samples
 --------------
 
-* Removed support for the nRF7002 DK and nRF5340 DK used with the nRF7002 EK shield from all Matter samples, as this configuration was deprecated in |NCS| v3.2.0.
-  The removal is mainly due to the very limited non-volatile memory available for application code.
-  As an alternative, use the nRF54LM20A or nRF54LM20B SoC with the nRF7002-EB II shield.
-  This combination provides significantly more non-volatile memory for Matter over Wi-Fi applications.
+* Updated:
+
+  * The :ref:`matter_window_covering_sample` sample to use the Thread Sleepy End Device (SED) device type by default.
+    You can now enable the Thread Synchronized Sleepy End Device (SSED) device type as an optional feature.
+
+* Removed:
+
+  * Support for the nRF7002 DK and nRF5340 DK used with the nRF7002 EK shield from all Matter samples, as this configuration was deprecated in |NCS| v3.2.0.
+    The removal is mainly due to the very limited non-volatile memory available for application code.
+    As an alternative, use the nRF54LM20A or nRF54LM20B SoC with the nRF7002-EB II shield.
+    This combination provides significantly more non-volatile memory for Matter over Wi-Fi applications.
 
 Networking samples
 ------------------

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -61,15 +61,15 @@ The following table lists variants and extensions available out of the box for e
       - SED
       - SED
       - MED
-      - SSED
+      - SED, SSED (optional)
       - MED
       - SED
       - SED
       - SED
       - FTD
     * - :ref:`ICD mode <ug_matter_device_low_power_icd>`
       - Not supported
-      - SIT
+      - SIT, LIT (optional)
       - SIT
       - Not supported
       - SIT

doc/nrf/samples/matter.rst

@@ -23,7 +23,7 @@ Matter: Window covering
 
 This sample demonstrates the usage of the :ref:`Matter <ug_matter>` application layer to build a window covering device.
 
-.. include:: /includes/matter/introduction/sleep_thread_ssed_sit.txt
+.. include:: /includes/matter/introduction/sleep_thread_sed_sit.txt
 
 Requirements
 ************
@@ -50,12 +50,15 @@ Window covering features
 
 The window covering sample implements the following features:
 
-* :ref:`SSED device type <matter_window_covering_sample_ssed>` - The window cover operates as a Thread Synchronized Sleepy End Device (SSED).
+* :ref:`SSED device type <matter_window_covering_sample_ssed>` - The window cover can operate as a Thread Synchronized Sleepy End Device (SSED).
 
 .. _matter_window_covering_sample_ssed:
 
 .. include:: /includes/matter/overview/ssed.txt
 
+You can enable the Thread Synchronized Sleepy End Device (SSED) support by adding an extra argument to the build command.
+For details, see the :ref:`Thread SSED support <matter_window_covering_sample_ssed_support>` section.
+
 Configuration
 *************
 
@@ -74,6 +77,31 @@ Advanced configuration options
 .. include:: /includes/matter/configuration/advanced/custom_board.txt
 .. include:: /includes/matter/configuration/advanced/internal_memory.txt
 
+.. _matter_window_covering_sample_ssed_support:
+
+Thread SSED support
+-------------------
+
+.. toggle::
+
+   You have the following two ways to enable the Thread SSED support:
+
+   .. tabs::
+
+      .. group-tab:: |nRFVSC|
+
+         Add ``-DEXTRA_CONF_FILE=ssed.conf`` to :guilabel:`Extra CMake arguments` in your build configuration.
+
+      .. group-tab:: Command line
+
+         Run the following command with *board_target* replaced with the board target name:
+
+         .. parsed-literal::
+            :class: highlight
+
+            west build -b *board_target* -p -- -DEXTRA_CONF_FILE=ssed.conf
+
+
 User interface
 **************
 

samples/matter/window_covering/README.rst

@@ -38,9 +38,7 @@ CONFIG_OPENTHREAD_NORDIC_LIBRARY_MTD=y
 CONFIG_OPENTHREAD_MTD=y
 CONFIG_OPENTHREAD_FTD=n
 CONFIG_CHIP_ENABLE_ICD_SUPPORT=y
-CONFIG_CHIP_THREAD_SSED=y
-CONFIG_CHIP_ICD_SLOW_POLL_INTERVAL=500
-CONFIG_CHIP_ICD_FAST_POLLING_INTERVAL=500
+CONFIG_CHIP_ICD_SLOW_POLL_INTERVAL=1000
 
 # Bluetooth Low Energy configuration
 CONFIG_BT_DEVICE_NAME="MatterWinCov"

samples/matter/window_covering/prj.conf

@@ -41,9 +41,7 @@ CONFIG_OPENTHREAD_NORDIC_LIBRARY_MTD=y
 CONFIG_OPENTHREAD_MTD=y
 CONFIG_OPENTHREAD_FTD=n
 CONFIG_CHIP_ENABLE_ICD_SUPPORT=y
-CONFIG_CHIP_THREAD_SSED=y
-CONFIG_CHIP_ICD_SLOW_POLL_INTERVAL=500
-CONFIG_CHIP_ICD_FAST_POLLING_INTERVAL=500
+CONFIG_CHIP_ICD_SLOW_POLL_INTERVAL=1000
 
 # Bluetooth Low Energy configuration
 CONFIG_BT_DEVICE_NAME="MatterWinCov"

samples/matter/window_covering/prj_release.conf

@@ -11,13 +11,31 @@ tests:
     build_only: true
     integration_platforms:
       - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54lm20dk/nrf54lm20b/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
+    platform_allow:
+      - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54lm20dk/nrf54lm20b/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
+  sample.matter.window_cover.debug.ssed:
+    sysbuild: true
+    build_only: true
+    extra_args:
+      - EXTRA_CONF_FILE=ssed.conf
+    integration_platforms:
+      - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
       - nrf54lm20dk/nrf54lm20b/cpuapp
       - nrf54lm20dk/nrf54lm20a/cpuapp
     platform_allow:
       - nrf52840dk/nrf52840
       - nrf5340dk/nrf5340/cpuapp
       - nrf54l15dk/nrf54l15/cpuapp
-      - nrf54l15dk/nrf54l15/cpuapp/ns
       - nrf54lm20dk/nrf54lm20b/cpuapp
       - nrf54lm20dk/nrf54lm20a/cpuapp
   sample.matter.window_cover.release:
@@ -26,6 +44,27 @@ tests:
     extra_args:
       - FILE_SUFFIX=release
     integration_platforms:
+      - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54lm20dk/nrf54lm20b/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
+    platform_allow:
+      - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54lm20dk/nrf54lm20b/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
+  sample.matter.window_cover.release.ssed:
+    sysbuild: true
+    build_only: true
+    extra_args:
+      - FILE_SUFFIX=release
+      - EXTRA_CONF_FILE=ssed.conf
+    integration_platforms:
+      - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
       - nrf54lm20dk/nrf54lm20b/cpuapp
       - nrf54lm20dk/nrf54lm20a/cpuapp
     platform_allow:
@@ -43,6 +82,30 @@ tests:
       - CONFIG_NCS_SAMPLE_MATTER_WATCHDOG=n
       - CONFIG_CHIP_ENABLE_PAIRING_AUTOSTART=y
     integration_platforms:
+      - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54lm20dk/nrf54lm20b/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
+    platform_allow:
+      - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54lm20dk/nrf54lm20b/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
+  sample.matter.window_cover.release.power_consumption.ssed:
+    sysbuild: true
+    build_only: true
+    extra_args:
+      - FILE_SUFFIX=release
+      - EXTRA_CONF_FILE=ssed.conf
+      - CONFIG_NCS_SAMPLE_MATTER_LEDS=n
+      - CONFIG_NCS_SAMPLE_MATTER_WATCHDOG=n
+      - CONFIG_CHIP_ENABLE_PAIRING_AUTOSTART=y
+    integration_platforms:
+      - nrf52840dk/nrf52840
+      - nrf5340dk/nrf5340/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
       - nrf54lm20dk/nrf54lm20b/cpuapp
       - nrf54lm20dk/nrf54lm20a/cpuapp
     platform_allow:

samples/matter/window_covering/sample.yaml

@@ -0,0 +1,10 @@
+#
+# Copyright (c) 2026 Nordic Semiconductor ASA
+#
+# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
+#
+
+# Enable Thread SSED configuration
+CONFIG_CHIP_THREAD_SSED=y
+CONFIG_CHIP_ICD_SLOW_POLL_INTERVAL=500
+CONFIG_CHIP_ICD_FAST_POLLING_INTERVAL=500