public bool SendPacket(XBeePacket packet)
{
throw new NotSupportedException("This method is not supported any more.");
}
// private void ReceiveData()
// {
// try
// {
// int bytesToRead = _serialPort.BytesToRead;
// while (!_stopThd)
// {
// if (bytesToRead == 0)
// {
// Thread.Sleep(20);
// }
// else
// {
// byte[] bytes = new byte[1024]; // TODO: what is the maximum size of Zigbee packets?
// if (_serialPort == null || !_serialPort.IsOpen)
// {
// if (_serialPort == null)
// _serialPort = new SerialPort(_port, _baudRate);
// _serialPort.Open();
// bytesToRead = _serialPort.BytesToRead;
// _readBuffer.SetLength(0);
// continue;
// }
// try
// {
// int bytesRead = _serialPort.Read(bytes, 0, bytesToRead);
// for (int i = 0; i < bytesRead; i++)
// {
// if (_apiType == ApiType.EnabledWithEscaped && XBeePacket.IsSpecialByte(bytes[i]))
// {
// if (bytes[i] == XBeePacket.PACKET_STARTBYTE)
// {
// _readBuffer.WriteByte(bytes[i]);
// }
// else if (bytes[i] == XBeePacket.PACKET_ESCAPE)
// {
// _readBuffer.WriteByte((byte)(0x20 ^ bytes[++i]));
// }
// else
// throw new Exception("This special byte should not appear.");
// }
// else
// _readBuffer.WriteByte(bytes[i]);
// }
// bool startOK = false;
// bool lengthAndCrcOK = false;
// do
// {
// _readBuffer.Position = 0;
// // startOK should be always true if there is at least on byte
// startOK = ((byte)_readBuffer.ReadByte() == XBeePacket.PACKET_STARTBYTE);
// if (!startOK)
// {
// bytes = _readBuffer.ToArray();
// _readBuffer = new MemoryStream();
// startOK = false;
// for (int i = 0; i < bytes.Length; i++)
// {
// if (!startOK && bytes[i] != XBeePacket.PACKET_STARTBYTE)
// continue;
// startOK = true;
// _readBuffer.Write(bytes, i, bytes.Length - i);
// _readBuffer.Position = 0;
// }
// }
// lengthAndCrcOK = this.CheckLengthAndCrc();
// bytes = _readBuffer.ToArray();
// _readBuffer.SetLength(0);
// ByteReader br = new ByteReader(bytes, ByteOrder.BigEndian);
//#if(LOG && !MF && !WindowsCE)
// Console.WriteLine("<<\t" + ByteUtil.PrintBytes(bytes, false));
//#endif
// if (startOK && lengthAndCrcOK)
// {
// byte startByte = br.ReadByte(); // start byte
// short length = br.ReadInt16();
// CheckFrame(length, br);
// if (br.AvailableBytes > 1)
// {
// br.ReadByte(); // checksum of current API message
// // ok, there are more bytes for an additional frame packet
// byte[] available = br.GetAvailableBytes();
// _readBuffer.Write(available, 0, available.Length);
// }
// }
// else
// {
// _readBuffer.Write(bytes, 0, bytes.Length);
// }
// }
// while (startOK & lengthAndCrcOK & (_readBuffer.Length > 4));
// }
// catch (Exception ex)
// {
// OnLogEvent(LogEventType.ServerException, ex.ToString());
// _readBuffer.SetLength(0);
// if (_serialPort != null && _serialPort.IsOpen)
// {
// bytesToRead = _serialPort.BytesToRead;
// }
// }
// }
// if (_serialPort != null && _serialPort.IsOpen)
// bytesToRead = _serialPort.BytesToRead;
// }
// }
//#if(!MF)
// catch (ThreadAbortException ex)
// {
// OnLogEvent(LogEventType.ServerException, ex.ToString());
//#if(LOG && !MF && !WindowsCE)
// // Display a message to the console.
// Console.WriteLine("{0} : DisplayMessage thread terminating - {1}",
// DateTime.Now.ToString("HH:mm:ss.ffff"),
// (string)ex.ExceptionState);
//#endif
// }
//#else
// catch(Exception ex)
// {
// OnLogEvent(LogEventType.ServerException, ex.ToString());
// }
//#endif
// }
private void ReceiveData()
{
try
{
while (!_stopThd)
{
Thread.Sleep(20);
if (_serialPort.BytesToRead <= 0)
{
continue;
}
byte[] buf = new byte[1];
while (_serialPort.BytesToRead > 0)
{
_serialPort.Read(buf, 0, 1);
if (_apiType == ApiType.EnabledWithEscaped && XBeePacket.IsSpecialByte(buf[0]))
{
if (buf[0] == XBeePacket.PACKET_STARTBYTE)
{
_readBuffer.WriteByte(buf[0]);
}
else if (buf[0] == XBeePacket.PACKET_ESCAPE)
{
_serialPort.Read(buf, 0, 1);
_readBuffer.WriteByte((byte)(0x20 ^ buf[0]));
}
else
{
throw new Exception("This special byte should not appear.");
}
}
else
{
_readBuffer.WriteByte(buf[0]);
}
if (_readBuffer.Length <= 4)
{
continue;
}
bool startOK = false;
bool lengthAndCrcOK = false;
_readBuffer.Position = 0; // set position of read buffer to beginning.
startOK = ((byte)_readBuffer.ReadByte() == XBeePacket.PACKET_STARTBYTE); // startOK should be always true if there is at least one byte.
byte[] bytes = new byte[1024]; // TODO: what is the maximum size of Zigbee packets?
if (!startOK) // First byte is not the start byte, so keep removing bytes in the read buffer until we get to one.
{
bytes = _readBuffer.ToArray();
_readBuffer = new MemoryStream();
for (int i = 0; i < bytes.Length; i++)
{
if (!startOK && bytes[i] != XBeePacket.PACKET_STARTBYTE)
{
continue;
}
startOK = true;
_readBuffer.Write(bytes, i, bytes.Length - i);
_readBuffer.Position = 0;
break; // I think we needed this break or else the loop will keep deleting stuff after we get the start byte.
}
if (!startOK) // Check once more if we have the start byte, if not, continue in the outer while loop waiting for more data.
{
continue;
}
}
// We should now have a read buffer starting with a start byte.
lengthAndCrcOK = this.CheckLengthAndCrc(); // check CRC and length.
bytes = _readBuffer.ToArray();
_readBuffer.SetLength(0);
#if (LOG && !MF && !WindowsCE)
Console.WriteLine("<<\t" + ByteUtil.PrintBytes(bytes, false));
#endif
if (startOK && lengthAndCrcOK)
{
ByteReader br = new ByteReader(bytes, ByteOrder.BigEndian);
byte startByte = br.ReadByte(); // start byte
short length = br.ReadInt16();
CheckFrame(length, br);
if (br.AvailableBytes > 1)
{
br.ReadByte(); // checksum of current API message
// ok, there are more bytes for an additional frame packet
byte[] available = br.GetAvailableBytes();
_readBuffer.Write(available, 0, available.Length);
}
}
else
{
_readBuffer.Write(bytes, 0, bytes.Length);
}
}
}
}
#if (!MF)
catch (ThreadAbortException ex)
{
OnLogEvent(LogEventType.ServerException, ex.ToString());
#if (LOG && !MF && !WindowsCE)
// Display a message to the console.
Console.WriteLine("{0} : DisplayMessage thread terminating - {1}",
DateTime.Now.ToString("HH:mm:ss.ffff"),
(string)ex.ExceptionState);
#endif
}
#else
catch (Exception ex)
{
OnLogEvent(LogEventType.ServerException, ex.ToString());
}
#endif
}
