PowerManagement.h

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#ifndef PowerManagement_H
#define PowerManagement_H
 
#include "ArduinoHAL.h"

class BatteryVoltage {
    public:
        BatteryVoltage(uint8_t adcPin, float factor, int numAdcBits, float voltageThreshold)
            : pin(adcPin), factor(factor), numAdcBits(numAdcBits), voltageThreshold(voltageThreshold) {analogReadResolution(numAdcBits);}
    
        float readVoltage() {
            // Set the pin for reading
            pinMode(pin, INPUT);
            uint32_t rawValue = analogRead(pin);  // Should give a value between 0 and 2^numAdcBits - 1
            float vRef = 3.3f; // reference voltage for the ADC on MARTHA 1.4
 
            // Convert raw ADC value to voltage at the pin, then apply the factor to get battery voltage
            float vPin = (static_cast<float>(rawValue) / (static_cast<float>(1 << numAdcBits) - 1)) * vRef;
            float vBat = vPin * factor;
 
            return vBat;
        }
      
        bool isLow(){
            return readVoltage() < voltageThreshold;
    }
    
    private:
        uint8_t pin;
        float factor;
        int numAdcBits;
        float voltageThreshold;
    };
    
    #endif // PowerManagement_H