Add the option to see if a Power on Reset has taken place and the RTC data is NOT valid.

src/RV-3028-C7.cpp

@@ -79,6 +79,7 @@ bool RV3028::begin(TwoWire &wirePort, bool set_24Hour, bool disable_TrickleCharg
 	delay(1);
 	if (set_24Hour) { set24Hour(); delay(1); }
 	if (disable_TrickleCharge) { disableTrickleCharge(); delay(1); }
+	timeUpdateRequired = readBit(RV3028_STATUS, STATUS_PORF);
 
 	return((set_LevelSwitchingMode ? setBackupSwitchoverMode(3) : true) && (reset_Status ? writeRegister(RV3028_STATUS, 0x00) : true));
 }

src/RV-3028-C7.h

@@ -291,6 +291,7 @@ class RV3028
 	void setBit(uint8_t reg_addr, uint8_t bit_num);
 	void clearBit(uint8_t reg_addr, uint8_t bit_num);
 	bool readBit(uint8_t reg_addr, uint8_t bit_num);
+	bool timeUpdateRequired = true;
 private:
 	uint8_t _time[TIME_ARRAY_LENGTH];
 	TwoWire *_i2cPort;