Add ability to read alarm times

ds3231/main.cpp

@@ -173,6 +173,12 @@ int main()
 			if (receivedByte == 's') {
 				const auto newDate = receiveTime();
 				ds3231.setDateTime(newDate);
+			} else if (receivedByte == '1') {
+				const auto alarm = ds3231.getAlarm1();
+				serial << F("Alarm1: ") << alarm << F("\r\n");
+			} else if (receivedByte == '2') {
+				const auto alarm = ds3231.getAlarm2();
+				serial << F("Alarm2: ") << alarm << F("\r\n");
 			} else
 				serial << F("Invalid input: ") << static_cast<char>(receivedByte) << F("\r\n");
 		}