79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
/*
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* TEnergyMonitor.h
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*
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* Created on: 07 apr 2018
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* Author: Emanuele
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*/
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#ifndef TENERGYMONITOR_H_
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#define TENERGYMONITOR_H_
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#define ADC_BITS 16
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#define ADC_COUNTS (1<<ADC_BITS)
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#define VSUPPLY 3300
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#include "mbed.h"
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#include "millis.h"
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class TEnergyMonitor {
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public:
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TEnergyMonitor(Serial* _pc);
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void voltage(PinName _inPinV, double _VCAL, double _PHASECAL);
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void current(PinName _inPinI, double _ICAL);
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void voltageTX(double _VCAL, double _PHASECAL);
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void currentTX(unsigned int _channel, double _ICAL);
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void calcVI(unsigned int crossings, unsigned int timeout);
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double calcIrms(unsigned int NUMBER_OF_SAMPLES);
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void serialprint();
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long readVcc();
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//Useful value variables
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double realPower,
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apparentPower,
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powerFactor,
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Vrms,
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Irms;
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private:
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Serial* pc;
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//Set Voltage and current input pins
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PinName inPinV;
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PinName inPinI;
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AnalogIn *adcV;
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AnalogIn *adcI;
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//Calibration coefficients
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//These need to be set in order to obtain accurate results
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double VCAL;
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double ICAL;
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double PHASECAL;
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//--------------------------------------------------------------------------------------
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// Variable declaration for emon_calc procedure
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//--------------------------------------------------------------------------------------
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unsigned int sampleV; //sample_ holds the raw analog read value
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unsigned int sampleI;
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double lastFilteredV,filteredV; //Filtered_ is the raw analog value minus the DC offset
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double filteredI;
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double offsetV; //Low-pass filter output
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double offsetI; //Low-pass filter output
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double phaseShiftedV; //Holds the calibrated phase shifted voltage.
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double sqV,sumV,sqI,sumI,instP,sumP; //sq = squared, sum = Sum, inst = instantaneous
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int startV; //Instantaneous voltage at start of sample window.
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bool lastVCross, checkVCross; //Used to measure number of times threshold is crossed.
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};
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#endif /* TENERGYMONITOR_H_ */
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