From 11211be9b9b823c73c20b5b419e3ff7b82b48e3e Mon Sep 17 00:00:00 2001
From: BlackMark <me@blackmark.me>
Date: Sat, 16 May 2020 17:25:00 +0200
Subject: [PATCH] Implement setting date-time

---
 ds3231.hpp | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/ds3231.hpp b/ds3231.hpp
index e217673..32d5101 100644
--- a/ds3231.hpp
+++ b/ds3231.hpp
@@ -113,7 +113,24 @@ class DS3231 {
 
 		writePartialRegister<TIME_REG_ADDR, TIME_START_OFFSET, TIME_END_OFFSET>(timeReg);
 	}
-	static void setDateTime(const DateTime &dateTime) {}
+	static void setDateTime(const DateTime &dateTime)
+	{
+		detail::TimeReg timeReg;
+		timeReg.setYear(dateTime.year);
+		timeReg.setMonth(dateTime.month);
+		timeReg.setDate(dateTime.day);
+		if constexpr (SetDayOfWeek)
+			timeReg.setDay(calcDayOfWeek(dateTime.year, dateTime.month, dateTime.day) + 1);
+
+		timeReg.setHours(dateTime.hour);
+		timeReg.setMinutes(dateTime.minute);
+		timeReg.setSeconds(dateTime.second);
+
+		constexpr auto START_OFFSET = offsetof(detail::TimeReg, seconds);
+		constexpr auto END_OFFSET = offsetof(detail::TimeReg, year);
+
+		writePartialRegister<TIME_REG_ADDR, START_OFFSET, END_OFFSET>(timeReg);
+	}
 
   private:
 	template <uint8_t Address, typename Register>