[lit] Added support for ICD DSLS in nrfconnect platform

Added configuration option allowing to enable ICD DSLS for
nrfconnect platform and integrated this functionality
in the lit example.

config/nrfconnect/chip-module/CMakeLists.txt

@@ -155,6 +155,7 @@ if (CONFIG_CHIP_ENABLE_ICD_SUPPORT)
     matter_add_gn_arg_bool  ("chip_enable_icd_lit"                       CONFIG_CHIP_ICD_LIT_SUPPORT)
     matter_add_gn_arg_bool  ("chip_enable_icd_checkin"                   CONFIG_CHIP_ICD_CHECK_IN_SUPPORT)
     matter_add_gn_arg_bool  ("chip_enable_icd_user_active_mode_trigger"  CONFIG_CHIP_ICD_UAT_SUPPORT)
+    matter_add_gn_arg_bool  ("chip_enable_icd_dsls"                      CONFIG_CHIP_ICD_DSLS_SUPPORT)
     matter_add_gn_arg_bool  ("icd_enforce_sit_slow_poll_limit"           TRUE)
 endif()
 

config/zephyr/Kconfig

@@ -398,25 +398,32 @@ config CHIP_ICD_ACTIVE_MODE_THRESHOLD
 	  For LIT devices it cannot be set to a value smaller than 5000 ms.
 
 config CHIP_ICD_LIT_SUPPORT
-	bool "Intermittenly Connected Device Long Idle Time support"
+	bool "Intermittently Connected Device Long Idle Time support"
 	imply CHIP_ICD_CHECK_IN_SUPPORT
 	imply CHIP_ICD_UAT_SUPPORT
 	help
 	  Enables the Intermittently Connected Device Long Idle Time support in Matter.
 	  It also implies the ICD Check-In and UAT features support that are mandatory for LIT device.
 
 config CHIP_ICD_CHECK_IN_SUPPORT
-	bool "Intermittenly Connected Device Check-In protocol support"
+	bool "Intermittently Connected Device Check-In protocol support"
 	help
 	  Enables the Check-In protocol support in Matter. It allows an ICD device to notify the registered
 	  ICD clients that it is available for communication.
 
 config CHIP_ICD_UAT_SUPPORT
-	bool "Intermittenly Connected Device User Active Mode Trigger support"
+	bool "Intermittently Connected Device User Active Mode Trigger support"
 	help
 	  Enables the User Active Mode Trigger (UAT) support in Matter. It allows the User to use application specific
 	  means (e.g. button press) to trigger an ICD device to enter the active mode and become responsive.
 
+config CHIP_ICD_DSLS_SUPPORT
+	bool "Intermittenttly Connected Device Dynamic SIT LIT support"
+	depends on CHIP_ICD_LIT_SUPPORT
+	help
+	  Enables the Dynamic SIT LIT support in Matter. It allows the application to dynamically switch between
+	  SIT and LIT modes, as long as the requirements for these modes are met (e.g. device has at least one active ICD client).
+
 config CHIP_ICD_CLIENTS_PER_FABRIC
 	int "Intermittently Connected Device number of clients per fabric"
 	default 2

examples/lit-icd-app/nrfconnect/README.md

@@ -167,6 +167,11 @@ duration of the effect.
 of the device. Releasing the button within the 3-second window cancels the
 factory reset procedure.
 
+**Button 2** Represents the Dynamic SIT LIT Support feature from the
+Intermittently Connected Devices Management cluster. Pressing it requests
+putting the ICD device in the SIT mode. Pressing the button again withdraws the
+previous request.
+
 **Button 3** Represents the User Active Mode Trigger feature from the
 Intermittently Connected Devices Management cluster. Pressing it puts the ICD
 device in the active mode and makes it responsive.

examples/lit-icd-app/nrfconnect/main/AppTask.cpp

@@ -86,6 +86,10 @@ bool sHaveBLEConnections   = false;
 #ifdef CONFIG_CHIP_CRYPTO_PSA
 chip::Crypto::PSAOperationalKeystore sPSAOperationalKeystore{};
 #endif
+
+#ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
+bool sIsSitModeRequested = false;
+#endif
 } // namespace
 
 namespace LedConsts {
@@ -285,6 +289,16 @@ void AppTask::ButtonEventHandler(uint32_t buttonState, uint32_t hasChanged)
         PostEvent(button_event);
     }
 
+#ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
+    if (ICD_DSLS_BUTTON_MASK & buttonState & hasChanged)
+    {
+        button_event.ButtonEvent.PinNo  = ICD_DSLS_BUTTON;
+        button_event.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
+        button_event.Handler            = IcdDslsEventHandler;
+        PostEvent(button_event);
+    }
+#endif
+
     if (ICD_UAT_BUTTON_MASK & hasChanged)
     {
         button_event.ButtonEvent.PinNo  = ICD_UAT_BUTTON;
@@ -294,6 +308,23 @@ void AppTask::ButtonEventHandler(uint32_t buttonState, uint32_t hasChanged)
     }
 }
 
+#ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
+void AppTask::IcdDslsEventHandler(const AppEvent &)
+{
+    if (sIsSitModeRequested)
+    {
+        PlatformMgr().ScheduleWork([](intptr_t arg) { chip::app::ICDNotifier::GetInstance().NotifySITModeRequestWithdrawal(); }, 0);
+        sIsSitModeRequested = false;
+    }
+    else
+    {
+        PlatformMgr().ScheduleWork([](intptr_t arg) { chip::app::ICDNotifier::GetInstance().NotifySITModeRequestNotification(); },
+                                   0);
+        sIsSitModeRequested = true;
+    }
+}
+#endif
+
 void AppTask::IcdUatEventHandler(const AppEvent &)
 {
     // Temporarily claim network activity, until we implement a "user trigger" reason for ICD wakeups.

examples/lit-icd-app/nrfconnect/main/include/AppConfig.h

@@ -23,6 +23,8 @@
 
 #define FUNCTION_BUTTON DK_BTN1
 #define FUNCTION_BUTTON_MASK DK_BTN1_MSK
+#define ICD_DSLS_BUTTON DK_BTN2
+#define ICD_DSLS_BUTTON_MASK DK_BTN2_MSK
 #define ICD_UAT_BUTTON DK_BTN3
 #define ICD_UAT_BUTTON_MASK DK_BTN3_MSK
 #define BLE_ADVERTISEMENT_START_BUTTON DK_BTN4

examples/lit-icd-app/nrfconnect/main/include/AppTask.h

@@ -56,6 +56,9 @@ class AppTask
     static void FunctionTimerEventHandler(const AppEvent & event);
     static void FunctionHandler(const AppEvent & event);
     static void StartBLEAdvertisementHandler(const AppEvent & event);
+#ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
+    static void IcdDslsEventHandler(const AppEvent & event);
+#endif
     static void IcdUatEventHandler(const AppEvent & event);
     static void UpdateLedStateEventHandler(const AppEvent & event);
 

examples/lit-icd-app/nrfconnect/prj.conf

@@ -51,3 +51,5 @@ CONFIG_CHIP_FACTORY_DATA_BUILD=y
 # Enable LIT ICD configuration
 CONFIG_CHIP_ENABLE_ICD_SUPPORT=y
 CONFIG_CHIP_ICD_LIT_SUPPORT=y
+CONFIG_CHIP_ICD_DSLS_SUPPORT=y
+CONFIG_CHIP_ICD_SIT_SLOW_POLL_LIMIT=5000

examples/lit-icd-app/nrfconnect/prj_release.conf

@@ -65,3 +65,5 @@ CONFIG_CHIP_FACTORY_DATA_BUILD=y
 # Enable LIT ICD configuration
 CONFIG_CHIP_ENABLE_ICD_SUPPORT=y
 CONFIG_CHIP_ICD_LIT_SUPPORT=y
+CONFIG_CHIP_ICD_DSLS_SUPPORT=y
+CONFIG_CHIP_ICD_SIT_SLOW_POLL_LIMIT=5000