RBControl_battery.hpp

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#pragma once
 
#include <atomic>
 
#include <esp_adc_cal.h>
 
#include "RBControl_leds.hpp"
#include "RBControl_piezo.hpp"
 
namespace rb {
 
class Manager;
 
class Battery {
    friend class Manager;
 
public:
    static constexpr uint32_t VOLTAGE_MIN = 3300 * 2; 
    static constexpr uint32_t VOLTAGE_MAX = 4200 * 2; 
    static constexpr uint32_t VOLTAGE_WARNING = 3500 * 2; 
    static constexpr float BATT_DIVIDER = 10.0f / (82.0f + 10.0f); 
 
    void setFineTuneCoef(float coef); 
    float fineTuneCoef() const;
 
    uint32_t raw() const; 
    uint32_t pct() const; 
    uint32_t voltageMv() const; 
 
    void shutdown(); 
private:
    Battery(Piezo& piezo, Leds& leds, Adafruit_MCP23017& expander);
    Battery(const Battery&) = delete;
    ~Battery();
 
    void install(bool disableEmergencyShutdown = false);
 
    void updateVoltage();
    void setWarning(bool on);
    uint32_t rawToMv(uint32_t rawVal);
 
    esp_adc_cal_characteristics_t m_adcChars;
 
    std::atomic<uint32_t> m_raw;
    std::atomic<uint32_t> m_voltageMv;
    std::atomic<float> m_coef;
 
    bool m_warningOn;
    bool m_emergencyShutdown;
    uint8_t m_undervoltedCounter;
    Piezo& m_piezo;
    Leds& m_leds;
    Adafruit_MCP23017& m_expander;
};
 
};