smart variable header

ESPMegaPRO-OS-SDK/lib/ESPMegaPRO/SmartVariable.hpp

@@ -0,0 +1,43 @@
+#pragma once
+#include <FRAM.h>
+#include <ESPMegaIoT.hpp>
+#include <map>
+/**
+ * @brief SmartVariable is a local variable that can be accessed remotely and have FRAM support
+ * 
+ */
+
+class SmartVariable {
+public:
+    SmartVariable();
+    ~SmartVariable();
+    void begin(size_t size);
+    void enableIoT(ESPMegaIoT* iot, const char* topic);
+    void enableValueRequest(const char* valueRequestTopic);
+    void setValue(const char* value);
+    char* getValue();
+    void enableSetValue(const char* setValueTopic);
+    void publishValue();
+    void bindFRAM(uint32_t framAddress);
+    void loadValue();
+    void saveValue();
+    void setValueAutoSave(bool autoSave);
+    uint16_t registerCallback(void (*callback)(char*));
+    void unregisterCallback(uint16_t handlerId);
+protected:
+    ESPMegaIoT* iot;
+    const char* topic;
+    char* value;
+    size_t size;
+    bool useValueRequest;
+    const char* valueRequestTopic;
+    bool setValueEnabled;
+    const char* setValueTopic;
+    bool autoSave;
+    FRAM fram;
+    uint32_t framAddress;
+    void handleMqttCallback(char* topic, char* payload);
+    // Value Change Callback
+    uint16_t currentHandlerId;
+    std::map<uint16_t, void (*)(char*)> valueChangeCallbacks;
+};