beta current transformer card

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

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+#pragma once
+#include <AnalogCard.hpp>
+#include <FRAM.h>
+#include <map>
+
+/**
+ * @brief The CurrentTransformer class is a class for reading the current and energy from a current transformer that's connected to the AnalogCard.
+ * Also supports storing energy to FRAM.
+ */
+
+class CurrentTransformer
+{
+    public:
+        CurrentTransformer(AnalogCard* analogCard, uint8_t pin, float *voltage, std::function<float(uint16_t)> adcToCurrent, uint32_t conversionInterval);
+        void bindFRAM(FRAM *fram, uint8_t framAddress); // Takes 16 bytes of FRAM (long double energy)
+        void begin();
+        void loop();
+        void beginConversion();
+        void setEnergy(float energy);
+        void resetEnergy();
+        float getCurrent();
+        long double getEnergy();
+        float getPower();
+        void saveEnergy();
+        void loadEnergy();
+        void setEnergyAutoSave(bool autoSave);
+        float getVoltage();
+        uint8_t registerCallback(std::function<void(float, long double)> callback);
+        void unregisterCallback(uint8_t handler);
+    private:
+        AnalogCard* analogCard;
+        uint8_t pin;
+        uint8_t framAddress;
+        FRAM *fram;
+        uint32_t conversionInterval;
+        bool autoSave;
+        float calibration;
+        long double energy;
+        float current;
+        float *voltage;
+        uint32_t lastConversionTime;
+        std::function<float(uint16_t)> adcToCurrent; // std::function that convert adc value to current in amps
+        uint8_t handler_count = 0;
+        std::map<uint8_t,std::function<void(float, long double)>> callbacks;
+};
+