45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
#pragma once
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#include <Arduino.h>
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#include <Rtc.h>
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class HalClock;
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extern HalClock halClock; // Singleton
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class HalClock {
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bool _available = false;
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mutable Rtc _sdkRtc;
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mutable uint8_t _cachedHour = 0;
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mutable uint8_t _cachedMinute = 0;
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mutable bool _hasCachedTime = false;
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mutable unsigned long _lastPollMs = 0;
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static constexpr unsigned long CLOCK_POLL_MS = 10000; // 10 seconds
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public:
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// Call after BoardConfig has selected the active device.
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void begin();
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// True if an RTC is present on this device
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bool isAvailable() const { return _available; }
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// Get current hour (0-23) and minute (0-59).
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// Returns false if RTC is not available.
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bool getTime(uint8_t& hour, uint8_t& minute) const;
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// Format time into a caller-provided buffer.
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// 24h mode produces "HH:MM" (needs >=6 bytes); 12h mode produces "H:MM AM"/"HH:MM PM" (needs >=9 bytes).
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// utcOffsetQuarterHoursBiased: biased quarter-hour offset (48 = UTC+0, 0 = UTC-12, 104 = UTC+14).
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// use12Hour: when true, format as 12-hour clock with AM/PM suffix.
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// Returns false if RTC is not available.
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bool formatTime(char* buf, size_t bufSize, uint8_t utcOffsetQuarterHoursBiased = 48, bool use12Hour = false) const;
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// Sync the RTC from an NTP server. Requires WiFi to be connected.
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// Blocks for up to ~5s while waiting for SNTP response.
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// Returns true if the RTC was successfully updated.
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//
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// Debouncing (skip if already synced once) is enforced by the caller, not here,
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// so the HAL stays free of any app-layer settings dependency.
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bool syncFromNTP();
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};
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