add support for precondfigured components - heap stats

src/esp.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include "TaskScheduler.h"
+#include "ha.h"
+
+using namespace Ha;
+
+namespace HaESP {
+    Task tHeap(1 * TASK_MINUTE, TASK_FOREVER, []() {
+        Sensor::mapSensors["heap_fragmentation"]->updateState(to_string(ESP.getHeapFragmentation()).c_str());
+        Sensor::mapSensors["heap_free"]->updateState(to_string(ESP.getFreeHeap()).c_str());
+        Sensor::mapSensors["heap_max_free_block"]->updateState(to_string(ESP.getMaxFreeBlockSize()).c_str());
+        }, &ts);
+
+    template <class T>
+    Builder<T>& heapStats(Builder<T>& builder) {
+        builder.addDiagnostic(Builder<Sensor>::instance(new Sensor{ "Heap fragmentation", "heap_fragmentation" })
+            .withUnitMeasure("%")
+            .withPrecision(0)
+            .build());
+        builder.addDiagnostic(Builder<Sensor>::instance(new Sensor{ "Heap free", "heap_free" })
+            .withDeviceClass("data_size")
+            .withUnitMeasure("B")
+            .withPrecision(0)
+            .build()
+        );
+        builder.addDiagnostic(Builder<Sensor>::instance(new Sensor{ "Heap max free block", "heap_max_free_block" })
+            .withDeviceClass("data_size")
+            .withUnitMeasure("B")
+            .withPrecision(0)
+            .build()
+        );
+        tHeap.enable();
+        return builder;
+    }
+}

src/ha.h

@@ -223,6 +223,10 @@ namespace Ha {
             return addSecondary(c);
         }
 
+        Builder& addPreconfigured(Builder& (*factoryBuilder)(Builder& builder)) {
+            return factoryBuilder(*this);
+        }
+
         Builder& addConfiguration(Component* c) {
             c->entityCategory = "config";
             return addSecondary(c);