Added power source configuration implementation

- A read on Sources attribute searches for all power source server clusters and decodes it in the response

src/app/clusters/power-source-configuration-server/power-source-configuration-server.cpp

@@ -0,0 +1,92 @@
+/*
+ *
+ *    Copyright (c) 2021 Project CHIP Authors
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+/****************************************************************************
+ * @file
+ * @brief Implementation for the Descriptor Server Cluster
+ ***************************************************************************/
+
+#include <app-common/zap-generated/af-structs.h>
+#include <app-common/zap-generated/cluster-objects.h>
+#include <app-common/zap-generated/ids/Attributes.h>
+#include <app-common/zap-generated/ids/Clusters.h>
+#include <app/AttributeAccessInterface.h>
+#include <app/util/attribute-storage.h>
+#include <lib/support/CodeUtils.h>
+#include <lib/support/logging/CHIPLogging.h>
+
+using namespace chip;
+using namespace chip::app;
+using namespace chip::app::Clusters;
+using namespace chip::app::Clusters::PowerSourceConfiguration::Attributes;
+
+namespace {
+
+class PowerSourceConfigurationAttrAccess : public AttributeAccessInterface
+{
+public:
+    // Register on all endpoints.
+    PowerSourceConfigurationAttrAccess() : AttributeAccessInterface(Optional<EndpointId>::Missing(), PowerSourceConfiguration::Id)
+    {}
+
+    CHIP_ERROR Read(const ConcreteReadAttributePath & aPath, AttributeValueEncoder & aEncoder) override;
+};
+
+PowerSourceConfigurationAttrAccess gAttrAccess;
+
+CHIP_ERROR PowerSourceConfigurationAttrAccess::Read(const ConcreteReadAttributePath & aPath, AttributeValueEncoder & aEncoder)
+{
+    VerifyOrDie(aPath.mClusterId == PowerSourceConfiguration::Id);
+    CHIP_ERROR err = CHIP_NO_ERROR;
+
+    if (aPath.mAttributeId == Sources::Id)
+    {
+        if (aPath.mEndpointId == 0x00)
+        {
+            err = aEncoder.EncodeList([](const TagBoundEncoder & encoder) -> CHIP_ERROR {
+                uint16_t clusterCount = 0;
+
+                for (uint16_t index = 0; index < emberAfEndpointCount(); index++)
+                {
+                    clusterCount = emberAfClusterCount(index, true);
+
+                    for (uint8_t clusterIndex = 0; clusterIndex < clusterCount; clusterIndex++)
+                    {
+                        EmberAfCluster * cluster = emberAfGetNthCluster(index, clusterIndex, true);
+
+                        if (cluster->clusterId == PowerSource::Id)
+                        {
+                            ReturnErrorOnFailure(encoder.Encode(index));
+                            break; // There is only 1 server cluster per endpoint
+                        }
+                    }
+                }
+
+                return CHIP_NO_ERROR;
+            });
+        }
+    }
+
+    return CHIP_NO_ERROR;
+}
+
+} // anonymous namespace
+
+void MatterPowerSourceConfigurationPluginServerInitCallback(void)
+{
+    registerAttributeAccessOverride(&gAttrAccess);
+}

src/app/util/util.cpp

@@ -307,7 +307,6 @@ void MatterFlowMeasurementPluginServerInitCallback() {}
 void MatterWakeOnLanPluginServerInitCallback() {}
 void MatterOnOffSwitchConfigurationPluginServerInitCallback() {}
 void MatterPowerSourcePluginServerInitCallback() {}
-void MatterPowerSourceConfigurationPluginServerInitCallback() {}
 void MatterThermostatUserInterfaceConfigurationPluginServerInitCallback() {}
 void MatterBridgedDeviceBasicInformationPluginServerInitCallback() {}
 

src/app/zap_cluster_list.py

@@ -54,7 +54,7 @@
     'OTA_PROVIDER_CLUSTER': ['ota-provider'],
     'OTA_REQUESTOR_CLUSTER': [],
     'POWER_SOURCE_CLUSTER': [],
-    'POWER_SOURCE_CONFIGURATION_CLUSTER': [],
+    'POWER_SOURCE_CONFIGURATION_CLUSTER': ['power-source-configuration-server'],
     'PRESSURE_MEASUREMENT_CLUSTER': [],
     'PUMP_CONFIG_CONTROL_CLUSTER': ['pump-configuration-and-control-server'],
     'RELATIVE_HUMIDITY_MEASUREMENT_CLUSTER': [],