private void PacketReceived(ThunderboltPacket packet)
{
if (packet.IsPacketValid)
{
if (packet.ID == 0x8F && packet.Data.Count == 17 && packet.Data[0] == 0xAB)
{
int timeOfWeek = packet.Data[1] << 24 | packet.Data[2] << 16 | packet.Data[3] << 8 | packet.Data[4];
ushort weekNumber = (ushort)(packet.Data[5] << 8 | packet.Data[6]);
short utcOffset = (short)(packet.Data[7] << 8 | packet.Data[8]);
// The Thunderbolt can take up to 12.5 minutes to receive the UTC offset
if (utcOffset == 0)
{
Log?.Invoke("Thunderbolt has not yet recieved UTC offset.", LogLevel.Error);
return;
}
// Current epoch for GPS week numbers is the morning of 22/8/1999
DateTime dateTime = new DateTime(1999, 8, 22, 0, 0, 0);
dateTime = dateTime.AddDays(7 * weekNumber);
dateTime = dateTime.AddSeconds(timeOfWeek);
dateTime = dateTime.AddSeconds(-utcOffset);
TimeAvailable?.Invoke(dateTime);
}
}
else
{
Log?.Invoke("An invalid packet was received.", LogLevel.Warning);
}
}
private void ProcessPacket()
{
byte id = packetBuffer[1];
// Grab only the data - not the first [DLE]<id> or the last [DLE][ETX]
List <byte> data = packetBuffer.GetRange(2, packetBuffer.Count - 4);
bool isPacketValid = Unstuff(ref data);
ThunderboltPacket packet;
if (isPacketValid)
{
packet = new ThunderboltPacket(isPacketValid, id, data, packetBuffer);
}
else
{
packet = new ThunderboltPacket(isPacketValid, 0, new List <byte>(), new List <byte>());
}
PacketReceived?.Invoke(packet);
}