public static APCIType GetAPCIType(this CommonExternalMessageInterface cemi)
{
int value = ((cemi.ServiceInformation[7] & 0x03) << 2) +
((cemi.ServiceInformation[8] & 0xC0) >> 6);
return((APCIType)value);
}
public static byte[] GetData(this CommonExternalMessageInterface cemi)
{
int dataLength = cemi.ServiceInformation[6] & 0x0F;
byte[] data;
switch (dataLength)
{
case 1: // 4 bit max
data = new[] { (byte)(cemi.ServiceInformation[8] & 0x0F) };
break;
case 2: // 8 bit
data = new[] { cemi.ServiceInformation[9] };
break;
case 3: // 2 bytes
data = new[] { cemi.ServiceInformation[9], cemi.ServiceInformation[10] };
break;
default:
data = new byte[1];
break;
}
return(data);
}
public static KnxGroupAddress GetDestinationAddress(this CommonExternalMessageInterface cemi)
{
return(new KnxGroupAddress()
{
Value = new[] { cemi.ServiceInformation[4], cemi.ServiceInformation[5] }
});
}
public static KnxAddress GetSourceAddress(this CommonExternalMessageInterface cemi)
{
return(new KnxAddress()
{
Value = new[] { cemi.ServiceInformation[2], cemi.ServiceInformation[3] }
});
}
private void SendCEMI(CommonExternalMessageInterface message)
{
lock (_connection.SequenceNumberLock)
{
TunnelingRequest request = new TunnelingRequest()
{
ConnectionHeader = new KnxNetBodyConnectionHeader()
{
ChannelId = _connection.ChannelId,
SequenceCounter = _connection.GetNextSequenceNumber()
},
Message = message
};
UdpClient.SendAsync(request.GetBytes(), _connection.RemoteEndPoint);
}
}
public static TunnelingRequest Parse(byte[] buffer, int index)
{
TunnelingRequest request = new TunnelingRequest
{
Header = KnxNetIPHeader.Parse(buffer, index),
ConnectionHeader = KnxNetBodyConnectionHeader.Parse(buffer, index + 6)
};
int cemiFrameSize = request.Header.Size - request.ConnectionHeader.StructureLength -
request.Header.HeaderSize;
if (cemiFrameSize == 0)
{
return(request);
}
CommonExternalMessageInterface msg;
CommonExternalMessageInterface.TryParse(buffer, index + 10, cemiFrameSize, out msg);
request.Message = msg;
return(request);
}
public static void SetAPCIType(this CommonExternalMessageInterface cemi)
{
}
