///<summary>
///Convert date time to DLMS bytes.
///</summary>
///<param name="buff">
///Byte buffer where data is write.
///</param>
///<param name="value">
///Added value.
///</param>
private static void SetDateTime(GXDLMSSettings settings, GXByteBuffer buff, object value)
{
GXDateTime dt;
if (value is GXDateTime)
{
dt = (GXDateTime)value;
}
else if (value is DateTime)
{
dt = new GXDateTime((DateTime)value);
dt.Skip = dt.Skip | DateTimeSkips.Ms;
}
else if (value is string)
{
dt = new GXDateTime(DateTime.Parse((string)value));
dt.Skip = dt.Skip | DateTimeSkips.Ms;
}
else
{
throw new Exception("Invalid date format.");
}
if (dt.Value.UtcDateTime == DateTime.MinValue)
{
dt.Value = DateTime.SpecifyKind(new DateTime(2000, 1, 1).Date, DateTimeKind.Utc);
}
else if (dt.Value.UtcDateTime == DateTime.MaxValue)
{
dt.Value = DateTime.SpecifyKind(DateTime.Now.AddYears(1).Date, DateTimeKind.Utc);
}
DateTimeOffset tm = dt.Value;
if ((dt.Skip & DateTimeSkips.Year) == 0)
{
buff.SetUInt16((ushort)tm.Year);
}
else
{
buff.SetUInt16(0xFFFF);
}
if ((dt.Skip & DateTimeSkips.Month) == 0)
{
if (dt.DaylightSavingsBegin)
{
buff.SetUInt8(0xFE);
}
else if (dt.DaylightSavingsEnd)
{
buff.SetUInt8(0xFD);
}
else
{
buff.SetUInt8((byte)tm.Month);
}
}
else
{
buff.SetUInt8(0xFF);
}
if ((dt.Skip & DateTimeSkips.Day) == 0)
{
buff.SetUInt8((byte)tm.Day);
}
else
{
buff.SetUInt8(0xFF);
}
// Add week day
if ((dt.Skip & DateTimeSkips.DayOfWeek) != 0)
{
buff.SetUInt8(0xFF);
}
else
{
if (dt.Value.DayOfWeek == DayOfWeek.Sunday)
{
buff.SetUInt8(7);
}
else
{
buff.SetUInt8((byte)(dt.Value.DayOfWeek));
}
}
//Add time.
if ((dt.Skip & DateTimeSkips.Hour) == 0)
{
buff.SetUInt8((byte)tm.Hour);
}
else
{
buff.SetUInt8(0xFF);
}
if ((dt.Skip & DateTimeSkips.Minute) == 0)
{
buff.SetUInt8((byte)tm.Minute);
}
else
{
buff.SetUInt8(0xFF);
}
if ((dt.Skip & DateTimeSkips.Second) == 0)
{
buff.SetUInt8((byte)tm.Second);
}
else
{
buff.SetUInt8(0xFF);
}
if ((dt.Skip & DateTimeSkips.Ms) == 0)
{
buff.SetUInt8((byte)(tm.Millisecond / 10));
}
else
{
buff.SetUInt8((byte)0xFF); //Hundredths of second is not used.
}
//Add deviation.
if ((dt.Skip & DateTimeSkips.Devitation) == 0)
{
if (settings != null && settings.UtcTimeZone)
{
buff.SetInt16((Int16)(dt.Value.Offset.TotalMinutes));
}
else
{
buff.SetInt16((Int16)(-dt.Value.Offset.TotalMinutes));
}
}
else //deviation not used.
{
buff.SetUInt16(0x8000);
}
//Add clock_status
if (dt.Value.LocalDateTime.IsDaylightSavingTime())
{
buff.SetUInt8((byte)(dt.Status | ClockStatus.DaylightSavingActive));
}
else
{
buff.SetUInt8((byte)dt.Status);
}
}