Updated Silabs ThreadStackManagerImpl for the Simplicity_sdk changes, added a helper in GenericThreadStackManagerImpl_OpenThread.hpp to avoid code repetition

Fixes for memory allocation initialization added since, unlike in SLC, here we use MBEDTLS_CONFIG_FILE="efr32-chip-mbedtls-config.h"

Author: lpbeliveau-silabs

examples/platform/silabs/BaseApplication.cpp

@@ -115,9 +115,10 @@ app::Clusters::NetworkCommissioning::Instance
     sWiFiNetworkCommissioningInstance(0 /* Endpoint Id */, &(NetworkCommissioning::SlWiFiDriver::GetInstance()));
 #endif /* SL_WIFI */
 
-#if !(defined(CHIP_CONFIG_ENABLE_ICD_SERVER) && CHIP_CONFIG_ENABLE_ICD_SERVER)
 bool sIsEnabled          = false;
 bool sIsAttached         = false;
+
+#if !(defined(CHIP_CONFIG_ENABLE_ICD_SERVER) && CHIP_CONFIG_ENABLE_ICD_SERVER)
 bool sHaveBLEConnections = false;
 #endif // CHIP_CONFIG_ENABLE_ICD_SERVER
 
@@ -156,14 +157,13 @@ Identify gIdentify = {
 };
 
 #endif // MATTER_DM_PLUGIN_IDENTIFY_SERVER
+
 } // namespace
 
 bool BaseApplication::sIsProvisioned           = false;
 bool BaseApplication::sIsFactoryResetTriggered = false;
 LEDWidget * BaseApplication::sAppActionLed     = nullptr;
-#if CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
 BaseApplicationDelegate BaseApplication::sAppDelegate = BaseApplicationDelegate();
-#endif // CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
 
 #ifdef DIC_ENABLE
 namespace {
@@ -181,17 +181,19 @@ void AppSpecificConnectivityEventCallback(const ChipDeviceEvent * event, intptr_
 } // namespace
 #endif // DIC_ENABLE
 
-#if CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
 void BaseApplicationDelegate::OnCommissioningSessionStarted()
 {
     isComissioningStarted = true;
 }
+
 void BaseApplicationDelegate::OnCommissioningSessionStopped()
 {
     isComissioningStarted = false;
 }
+
 void BaseApplicationDelegate::OnCommissioningWindowClosed()
 {
+#if CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
     if (!BaseApplication::GetProvisionStatus() && !isComissioningStarted)
     {
         int32_t status = wfx_power_save(RSI_SLEEP_MODE_8, STANDBY_POWER_SAVE_WITH_RAM_RETENTION);
@@ -200,8 +202,27 @@ void BaseApplicationDelegate::OnCommissioningWindowClosed()
             ChipLogError(DeviceLayer, "Failed to enable the TA Deep Sleep");
         }
     }
+#endif // CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917qq
+}
+
+void BaseApplicationDelegate::OnFabricCommitted(const FabricTable & fabricTable, FabricIndex fabricIndex)
+{
+    // If we commissioned our first fabric, Update the commissioned status of the App
+    if (fabricTable.FabricCount() == 1)
+    {
+        BaseApplication::UpdateCommissioningStatus(true);
+    }
+}
+
+void BaseApplicationDelegate::OnFabricRemoved(const FabricTable & fabricTable, FabricIndex fabricIndex)
+{
+    if (fabricTable.FabricCount() == 0)
+    {
+        BaseApplication::UpdateCommissioningStatus(false);
+
+        BaseApplication::DoProvisioningReset();
+    }
 }
-#endif // CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
 
 /**********************************************************
  * AppTask Definitions
@@ -298,6 +319,8 @@ CHIP_ERROR BaseApplication::Init()
 #if CHIP_ENABLE_OPENTHREAD
     BaseApplication::sIsProvisioned = ConnectivityMgr().IsThreadProvisioned();
 #endif
+
+    err = chip::Server::GetInstance().GetFabricTable().AddFabricDelegate(&sAppDelegate);
     return err;
 }
 
@@ -411,6 +434,23 @@ bool BaseApplication::ActivateStatusLedPatterns()
     return isPatternSet;
 }
 
+void BaseApplication::UpdateCommissioningStatus(bool newState)
+{
+#ifdef SL_WIFI
+    BaseApplication::sIsProvisioned = ConnectivityMgr().IsWiFiStationProvisioned();  
+    sIsEnabled  = ConnectivityMgr().IsWiFiStationEnabled();
+    sIsAttached = ConnectivityMgr().IsWiFiStationConnected();
+#endif /* SL_WIFI */
+#if CHIP_ENABLE_OPENTHREAD
+    // TODO: This is a temporary solution until we can read Thread provisioning status from RAM instead of NVM.
+    BaseApplication::sIsProvisioned = newState;
+    sIsEnabled  = ConnectivityMgr().IsThreadEnabled();
+    sIsAttached = ConnectivityMgr().IsThreadAttached();
+#endif /* CHIP_ENABLE_OPENTHREAD */
+
+    ActivateStatusLedPatterns();
+}
+
 // TODO Move State Monitoring elsewhere
 void BaseApplication::LightEventHandler()
 {
@@ -750,15 +790,42 @@ void BaseApplication::ScheduleFactoryReset()
         {
             Provision::Manager::GetInstance().SetProvisionRequired(true);
         }
-        PlatformMgr().HandleServerShuttingDown();
+        PlatformMgr().HandleServerShuttingDown(); // HandleServerShuttingDown calls OnShutdown() which is only implemented for the basic information cluster it seems. And triggers and Event flush, which is not relevant when there are no fabrics left
         ConfigurationMgr().InitiateFactoryReset();
     });
 }
 
+void BaseApplication::DoProvisioningReset()
+{
+    PlatformMgr().ScheduleWork([](intptr_t) {
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD
+#if CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+        ThreadStackMgr().ClearAllSrpHostAndServices();
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_SRP_CLIENT
+        ChipLogProgress(DeviceLayer, "Clearing Thread provision");
+        chip::DeviceLayer::ConnectivityMgr().ErasePersistentInfo();
+        ThreadStackMgrImpl().FactoryResetThreadStack();
+        ThreadStackMgr().InitThreadStack();
+#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD
+
+#if CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
+        ChipLogProgress(DeviceLayer, "Clearing WiFi provision");
+        chip::DeviceLayer::ConnectivityMgr().ClearWiFiStationProvision();
+#endif // CHIP_DEVICE_CONFIG_ENABLE_WIFI_STATION
+
+        CHIP_ERROR err = Server::GetInstance().GetCommissioningWindowManager().OpenBasicCommissioningWindow();
+        if (err != CHIP_NO_ERROR)
+        {
+            SILABS_LOG("Failed to open the Basic Commissioning Window");
+        }
+    });
+}
+
 void BaseApplication::OnPlatformEvent(const ChipDeviceEvent * event, intptr_t)
 {
     if (event->Type == DeviceEventType::kServiceProvisioningChange)
     {
+        // Note: This is only called on Attach, we need to add a method to detect Thread Network Detach
         BaseApplication::sIsProvisioned = event->ServiceProvisioningChange.IsServiceProvisioned;
     }
 }

examples/platform/silabs/BaseApplication.h

@@ -35,6 +35,7 @@
 #include <lib/core/CHIPError.h>
 #include <platform/CHIPDeviceEvent.h>
 #include <platform/CHIPDeviceLayer.h>
+#include <credentials/FabricTable.h>
 
 #include "LEDWidget.h"
 
@@ -62,16 +63,20 @@
 #define APP_ERROR_START_TIMER_FAILED CHIP_APPLICATION_ERROR(0x05)
 #define APP_ERROR_STOP_TIMER_FAILED CHIP_APPLICATION_ERROR(0x06)
 
-#if CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
-class BaseApplicationDelegate : public AppDelegate
+class BaseApplicationDelegate : public AppDelegate, 
+                                public chip::FabricTable::Delegate
 {
 private:
+    // AppDelegate
     bool isComissioningStarted;
     void OnCommissioningSessionStarted() override;
     void OnCommissioningSessionStopped() override;
     void OnCommissioningWindowClosed() override;
+
+    // FabricTable::Delegate
+    void OnFabricCommitted(const chip::FabricTable & fabricTable, chip::FabricIndex fabricIndex) override;
+    void OnFabricRemoved(const chip::FabricTable & fabricTable, chip::FabricIndex fabricIndex) override;
 };
-#endif // CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
 
 /**********************************************************
  * BaseApplication Declaration
@@ -86,9 +91,7 @@ class BaseApplication
     static bool sIsProvisioned;
     static bool sIsFactoryResetTriggered;
     static LEDWidget * sAppActionLed;
-#if CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
     static BaseApplicationDelegate sAppDelegate;
-#endif // CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
 
     /**
      * @brief Create AppTask task and Event Queue
@@ -156,6 +159,18 @@ class BaseApplication
     static void OnTriggerIdentifyEffect(Identify * identify);
 #endif
 
+    /**
+     * @brief Updates the static boolean isCommissioned to the desired state
+     *
+     */
+    static void UpdateCommissioningStatus(bool newState);
+
+    /**
+     * @brief Called when the last Fabric is removed, clears all Fabric related data and Thread  Wifi provision.
+     * @note This function preserves some NVM3 data that is not Fabric scoped like Attribute Value or Boot Count.
+     */
+    static void DoProvisioningReset();
+
 protected:
     CHIP_ERROR Init();
 

examples/platform/silabs/MatterConfig.cpp

@@ -222,9 +222,12 @@ void SilabsMatterConfig::ConnectivityEventCallback(const ChipDeviceEvent * event
 CHIP_ERROR SilabsMatterConfig::InitMatter(const char * appName)
 {
     CHIP_ERROR err;
-
+#ifdef SL_WIFI
+    // Because OpenThread needs to use memory allocation during its Key operations, we initialize the memory management for thread
+    // and set the allocation functions inside sl_ot_create_instance, which is called by sl_system_init in the OpenThread stack
+    // initialization.
     mbedtls_platform_set_calloc_free(CHIPPlatformMemoryCalloc, CHIPPlatformMemoryFree);
-
+#endif
     SILABS_LOG("==================================================");
     SILABS_LOG("%s starting", appName);
     SILABS_LOG("==================================================");
@@ -241,11 +244,11 @@ CHIP_ERROR SilabsMatterConfig::InitMatter(const char * appName)
     // Init Matter Stack
     //==============================================
     SILABS_LOG("Init CHIP Stack");
-    // Init Chip memory management before the stack
-    ReturnErrorOnFailure(chip::Platform::MemoryInit());
 
-// WiFi needs to be initialized after Memory Init for some reason
 #ifdef SL_WIFI
+    // Init Chip memory management before the stack
+    // See comment above about OpenThread memory allocation as to why this is WIFI only here.
+    ReturnErrorOnFailure(chip::Platform::MemoryInit());
     ReturnErrorOnFailure(InitWiFi());
 #endif
 
@@ -304,9 +307,7 @@ CHIP_ERROR SilabsMatterConfig::InitMatter(const char * appName)
     initParams.endpointNativeParams    = static_cast<void *>(&nativeParams);
 #endif
 
-#if CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
     initParams.appDelegate = &BaseApplication::sAppDelegate;
-#endif // CHIP_CONFIG_ENABLE_ICD_SERVER && SLI_SI917
     // Init Matter Server and Start Event Loop
     err = chip::Server::GetInstance().Init(initParams);
 

examples/platform/silabs/efr32/uart.cpp

@@ -361,6 +361,12 @@ int16_t uartConsoleWrite(const char * Buf, uint16_t BufLength)
         return UART_CONSOLE_ERR;
     }
 
+    if (NULL == sUartTxQueue)
+    {
+        // This is to prevent the first prompt from OTCLI to be rejected and to break the OTCli output
+        uartConsoleInit();
+    }
+
 #ifdef PW_RPC_ENABLED
     // Pigweed Logger is already thread safe.
     UARTDRV_ForceTransmit(vcom_handle, (uint8_t *) Buf, BufLength);

examples/platform/silabs/matter-platform.slcp

@@ -72,6 +72,9 @@ component:
 - {id: mbedtls_platform_dynamic_memory_allocation_config_init_runtime }
 - {id: mbedtls_base64}
 - {id: ot_psa_crypto}
+- {id: ot_platform_abstraction}
+- {id: ot_rtos_wrappers_real}
+- {id: sl_ot_custom_cli}
 # Necessary componenets for ot coap cert lib
 # - {id: mbedtls_dtls} # Requried by COAP lib
 # - {id: mbedtls_tls_server} # Requried by COAP lib
@@ -86,6 +89,10 @@ config_file:
     directory: btconf
 
 configuration:
+- name: SL_OPENTHREAD_ENABLE_APP_TASK
+  value: 0
+- name: SL_OPENTHREAD_ENABLE_CLI_TASK
+  value: 0
 - {name: SL_MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED, value: '0'}
 - {name: SL_MBEDTLS_KEY_EXCHANGE_PSK_ENABLED, value: '1'}
 - condition: [uartdrv_usart]

src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.h

@@ -142,6 +142,7 @@ class GenericThreadStackManagerImpl_OpenThread
 
     // ===== Members available to the implementation subclass.
 
+    CHIP_ERROR ConfigureThreadStack(otInstance * otInst);
     CHIP_ERROR DoInit(otInstance * otInst);
     bool IsThreadAttachedNoLock(void);
     bool IsThreadInterfaceUpNoLock(void);

src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.hpp

@@ -1088,29 +1088,21 @@ CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::_GetPollPeriod(u
     return CHIP_NO_ERROR;
 }
 
+/**
+ * @brief Helper that sets callbacks for OpenThread state changes and configures the Thread stack.
+ * Assigns mOTInst to and instance and configures the OT stack on a device by setting state change callbacks enabling features 
+ * for IPv6 address configuration, enabling the Thread network if necessary, and handling SRP if enabled.
+ * Allows for the configuration of the Thread stack on a device where the instance and the otCLI are already initialised.
+ * 
+ * @param otInst Pointer to the OT instance
+ * @return CHIP_ERROR OpenThread error mapped to CHIP_ERROR
+ */
 template <class ImplClass>
-CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::DoInit(otInstance * otInst)
+CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::ConfigureThreadStack(otInstance * otInst)
 {
     CHIP_ERROR err = CHIP_NO_ERROR;
     otError otErr  = OT_ERROR_NONE;
 
-    // Arrange for OpenThread errors to be translated to text.
-    RegisterOpenThreadErrorFormatter();
-
-    mOTInst = NULL;
-
-    // If an OpenThread instance hasn't been supplied, call otInstanceInitSingle() to
-    // create or acquire a singleton instance of OpenThread.
-    if (otInst == NULL)
-    {
-        otInst = otInstanceInitSingle();
-        VerifyOrExit(otInst != NULL, err = MapOpenThreadError(OT_ERROR_FAILED));
-    }
-
-#if !defined(PW_RPC_ENABLED) && CHIP_DEVICE_CONFIG_THREAD_ENABLE_CLI
-    otAppCliInit(otInst);
-#endif
-
     mOTInst = otInst;
 
     // Arrange for OpenThread to call the OnOpenThreadStateChange method whenever a
@@ -1146,14 +1138,43 @@ CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::DoInit(otInstanc
     }
 #endif
 
-    initNetworkCommissioningThreadDriver();
-
 exit:
 
     ChipLogProgress(DeviceLayer, "OpenThread started: %s", otThreadErrorToString(otErr));
     return err;
 }
 
+
+template <class ImplClass>
+CHIP_ERROR GenericThreadStackManagerImpl_OpenThread<ImplClass>::DoInit(otInstance * otInst)
+{
+    CHIP_ERROR err = CHIP_NO_ERROR;
+
+    // Arrange for OpenThread errors to be translated to text.
+    RegisterOpenThreadErrorFormatter();
+
+    mOTInst = NULL;
+
+    // If an OpenThread instance hasn't been supplied, call otInstanceInitSingle() to
+    // create or acquire a singleton instance of OpenThread.
+    if (otInst == NULL)
+    {
+        otInst = otInstanceInitSingle();
+        VerifyOrExit(otInst != NULL, err = MapOpenThreadError(OT_ERROR_FAILED));
+    }
+
+#if !defined(PW_RPC_ENABLED) && CHIP_DEVICE_CONFIG_THREAD_ENABLE_CLI
+    otAppCliInit(otInst);
+#endif
+
+    err = ConfigureThreadStack(otInst);
+
+    initNetworkCommissioningThreadDriver();
+
+exit:
+    return err;
+}
+
 template <class ImplClass>
 bool GenericThreadStackManagerImpl_OpenThread<ImplClass>::IsThreadAttachedNoLock(void)
 {