esp32_rtc.h

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#pragma once
 
#if defined(ARDUINO)
 
#include "ersa/hal/rtc.h"
#include "ersa/common/calendar_time.h"
#include "drivers/rtc/ds3231/ds3231.h"
 
namespace ersa {
namespace hal {
 
class Esp32Rtc : public IRtc {
public:
    Esp32Rtc(int sda = 6, int scl = 7);
    ~Esp32Rtc() override = default;
 
    Result<void> init() override;
    TimePoint now() override;
    Result<void> adjust(const TimePoint& time) override;
    Result<void> setEpoch(uint32_t epochSeconds) override;
    bool isHealthy() const override;
    RtcDiagnostics diagnostics() override;
    void resync() override;
 
private:
    int sda_, scl_;
    ersa::drivers::rtc::Ds3231 rtc_;
    CalendarTime cachedTime_{};
    uint32_t lastReadMs_{0};
    uint32_t lastRtcPollMs_{0};
    bool online_{false};
    bool oscillatorStopped_{false};
    bool driftMeasured_{false};
    int32_t lastDriftSeconds_{0};
 
    static TimePoint toTimePoint(const CalendarTime& dt);
    static CalendarTime toCalendarTime(const TimePoint& tp);
    static bool valid(const CalendarTime& time);
    bool readChipTime(CalendarTime& time);
    bool writeChipTime(const CalendarTime& time);
    bool responds();
    void reconcile(uint32_t nowMs, bool force);
};
 
} // namespace hal
} // namespace ersa
 
#endif // ARDUINO