// TODO: Double check this once XBeeQueue is implemented
/// <summary>
/// Adds a packet to the queue. If the queue is full, the head is removed to make room
/// </summary>
/// <param name="packet">The packet to be added</param>
/// <exception cref="NotImplementedException">Thrown if packet is explicit, since that functionality isn't implemented</exception>
protected void AddPacketQueue(XBeeAPIPacket packet)
{
// Data packets
if (packet.FrameTypeValue == ApiFrameType.Byte.RECEIVE_PACKET || packet.FrameTypeValue == ApiFrameType.Byte.RX_64 ||
packet.FrameTypeValue == ApiFrameType.Byte.RX_16)
{
// BUG: Race condition in the original python implementation (it has been fixed here). There was
// no lock between making room in the queue and adding a new element. If another packet gets
// added in between these two operations, the latter will throw an unhandled "XBeeQueueFullException"
DataXBeeQueue.PutNoWait(packet, true);
}
else if (packet.FrameTypeValue == ApiFrameType.Byte.EXPLICIT_RX_INDICATOR)
{
ExplicitXBeeQueue.PutNoWait(packet, true);
if (IsSpecialExplicitPacket((ExplicitRXIndicatorPacket)packet))
{
AddPacketQueue(ExplToNoExpl((ExplicitRXIndicatorPacket)packet));
}
}
else if (packet.FrameTypeValue == ApiFrameType.Byte.RX_IPV4)
{
IPXBeeQueue.PutNoWait(packet, true);
}
else
{
XBeeQueue.PutNoWait(packet, true);
}
}
public PacketListener(SerialPort serialPort, XBeeDevice xbeeDevice, int queueMaxSize = -1)
{
foreach (Reader.PacketReceivedHandler handler in xbeeDevice.GetXBeeDeviceCallbacks())
{
// Get list of internal callbacks from device, and subscribe them all to PacketReceivedAPI
PacketReceivedAPI += handler;
}
this.xbeeDevice = xbeeDevice;
this.comPort = serialPort;
this.stop = true;
this.queueMaxSize = (queueMaxSize < 0) ? DEFAULT_QUEUE_MAX_SIZE : queueMaxSize;
XBeeQueue = new XBeeQueue(this.queueMaxSize);
DataXBeeQueue = new XBeeQueue(this.queueMaxSize);
ExplicitXBeeQueue = new XBeeQueue(this.queueMaxSize);
IPXBeeQueue = new XBeeQueue(this.queueMaxSize);
}