protected byte[] CreateRequestStatusDatagramCommon(string destinationAddress, byte[] datagram, int cemi_start_pos)
{
var i = 0;
datagram[cemi_start_pos + i++] =
KnxConnection.ActionMessageCode != 0x00
? KnxConnection.ActionMessageCode
: (byte)0x11;
datagram[cemi_start_pos + i++] = 0x00;
datagram[cemi_start_pos + i++] = 0xAC;
datagram[cemi_start_pos + i++] =
KnxHelper.IsAddressIndividual(destinationAddress)
? (byte)0x50
: (byte)0xF0;
datagram[cemi_start_pos + i++] = 0x00;
datagram[cemi_start_pos + i++] = 0x00;
byte[] dst_address = KnxHelper.GetAddress(destinationAddress);
datagram[cemi_start_pos + i++] = dst_address[0];
datagram[cemi_start_pos + i++] = dst_address[1];
datagram[cemi_start_pos + i++] = 0x01;
datagram[cemi_start_pos + i++] = 0x00;
datagram[cemi_start_pos + i] = 0x00;
return(datagram);
}
internal static ConnectResponseFrame CreateFrame(byte[] datagram, KnxConnection knx)
{
ConnectResponseFrame frame = new ConnectResponseFrame(knx);
var knxDatagram = new KnxDatagram(datagram)
{
HeaderLength = datagram[0],
ProtocolVersion = datagram[1],
ServiceType = new[] { datagram[2], datagram[3] },
TotalLength = datagram[4] + datagram[5],
ChannelId = datagram[6],
Status = datagram[7]
};
if (knxDatagram.ChannelId == 0x00 && knxDatagram.Status == 0x24)
{
frame.ErrorCode = "E_NO_MORE_CONNECTIONS";
return(frame);
}
else if (knxDatagram.Status == 0x2B || knxDatagram.Status == 0x2A)
{
/*if (knx is KnxConnectionTunnelingSecure knxIpSec)
* {
* knxIpSec.IpSecureErrorOccured?.Invoke(knx, new IpSecureEventArgs("E_NO_TUNNELLING_ADDRESS", KnxError.IpSecInvalidIndividualAddress));
* knx.Disconnect();
* }*/
}
else if (knxDatagram.Status == 0x26)
{
frame.ErrorCode = "E_DATA_CONNECTION";
return(frame);
}
else if (knxDatagram.Status == 0x27)
{
frame.ErrorCode = "E_KNX_CONNECTION";
return(frame);
}
else
{
byte[] iab = new byte[2];
Array.Copy(datagram, 18, iab, 0, 2);
string ia = KnxHelper.GetIndividualAddress(iab);
if (!String.IsNullOrEmpty(knx.IndividualAddress) && ia != knx.IndividualAddress)
{
// ((KnxConnectionTunnelingSecure) knx).IpSecureErrorOccured.Invoke(knx,
// new IpSecureEventArgs("E_DATA_CONNECTION",
// KnxError.IpSecRespondedIndividualAddressDiffersToGiven));
// knx.Disconnect();
return(frame);
}
frame.IndividualAddress = ia;
frame.ChannelId = knxDatagram.ChannelId;
frame.IsValid = true;
}
return(frame);
}
internal override byte[] ToFrame()
{
int cemi_start_pos = 10;
var datagram = new byte[21];
datagram[00] = 0x06;
datagram[01] = 0x10;
datagram[02] = 0x04;
datagram[03] = 0x20;
datagram[04] = 0x00;
datagram[05] = 0x15;
datagram[06] = 0x04;
datagram[07] = KnxConnection.ChannelId;
datagram[08] = KnxConnection.GenerateSequenceNumber();
datagram[09] = 0x00;
var i = 0;
datagram[cemi_start_pos + i++] =
KnxConnection.ActionMessageCode != 0x00
? KnxConnection.ActionMessageCode
: (byte)0x11;
datagram[cemi_start_pos + i++] = 0x00;
datagram[cemi_start_pos + i++] = 0xAC;
datagram[cemi_start_pos + i++] =
KnxHelper.IsAddressIndividual(DestinationAddress)
? (byte)0x50
: (byte)0xF0;
datagram[cemi_start_pos + i++] = 0x00;
datagram[cemi_start_pos + i++] = 0x00;
byte[] dstAddress = KnxHelper.GetAddress(DestinationAddress);
datagram[cemi_start_pos + i++] = dstAddress[0];
datagram[cemi_start_pos + i++] = dstAddress[1];
datagram[cemi_start_pos + i++] = 0x01;
datagram[cemi_start_pos + i++] = 0x00;
datagram[cemi_start_pos + i] = 0x00;
return(datagram);
}
private byte[] CreateActionDatagramCommon(string destinationAddress, byte[] data, byte[] header)
{
int i;
var dataLength = KnxHelper.GetDataLength(data);
// HEADER
var datagram = new byte[dataLength + 10 + header.Length];
for (i = 0; i < header.Length; i++)
{
datagram[i] = header[i];
}
datagram[i++] =
KnxConnection.ActionMessageCode != 0x00
? KnxConnection.ActionMessageCode
: (byte)0x11;
datagram[i++] = 0x00;
datagram[i++] = 0xA4;
datagram[i++] =
KnxHelper.IsAddressIndividual(destinationAddress)
? (byte)0x50
: (byte)0xE0;
datagram[i++] = 0x00;
datagram[i++] = 0x00;
var dstAddress = KnxHelper.GetAddress(destinationAddress);
datagram[i++] = dstAddress[0];
datagram[i++] = dstAddress[1];
datagram[i++] = (byte)dataLength;
datagram[i++] = 0x00;
datagram[i] = 0x80;
KnxHelper.WriteData(datagram, data, i);
return(datagram);
}
internal override byte[] ToFrame()
{
var dataLength = KnxHelper.GetDataLength(_data);
// HEADER
var datagram = new byte[10];
datagram[00] = 0x06;
datagram[01] = 0x10;
datagram[02] = 0x04;
datagram[03] = 0x20;
var totalLength = BitConverter.GetBytes(dataLength + 20);
datagram[04] = totalLength[1];
datagram[05] = totalLength[0];
datagram[06] = 0x04;
datagram[07] = KnxConnection.ChannelId;
datagram[08] = KnxConnection.GenerateSequenceNumber();
datagram[09] = 0x00;
return(CreateActionDatagramCommon(_ia, _data, datagram));
}
protected byte[] CreateActionDatagramCommon(string destinationAddress, byte[] data, byte[] header)
{
int i;
var dataLength = KnxHelper.GetDataLength(data);
// HEADER
var datagram = new byte[dataLength + 10 + header.Length];
for (i = 0; i < header.Length; i++)
{
datagram[i] = header[i];
}
// CEMI (start at position 6)
// +--------+--------+--------+--------+----------------+----------------+--------+----------------+
// | Msg |Add.Info| Ctrl 1 | Ctrl 2 | Source Address | Dest. Address | Data | APDU |
// | Code | Length | | | | | Length | |
// +--------+--------+--------+--------+----------------+----------------+--------+----------------+
// 1 byte 1 byte 1 byte 1 byte 2 bytes 2 bytes 1 byte 2 bytes
//
// Message Code = 0x11 - a L_Data.req primitive
// COMMON EMI MESSAGE CODES FOR DATA LINK LAYER PRIMITIVES
// FROM NETWORK LAYER TO DATA LINK LAYER
// +---------------------------+--------------+-------------------------+---------------------+------------------+
// | Data Link Layer Primitive | Message Code | Data Link Layer Service | Service Description | Common EMI Frame |
// +---------------------------+--------------+-------------------------+---------------------+------------------+
// | L_Raw.req | 0x10 | | | |
// +---------------------------+--------------+-------------------------+---------------------+------------------+
// | | | | Primitive used for | Sample Common |
// | L_Data.req | 0x11 | Data Service | transmitting a data | EMI frame |
// | | | | frame | |
// +---------------------------+--------------+-------------------------+---------------------+------------------+
// | L_Poll_Data.req | 0x13 | Poll Data Service | | |
// +---------------------------+--------------+-------------------------+---------------------+------------------+
// | L_Raw.req | 0x10 | | | |
// +---------------------------+--------------+-------------------------+---------------------+------------------+
// FROM DATA LINK LAYER TO NETWORK LAYER
// +---------------------------+--------------+-------------------------+---------------------+
// | Data Link Layer Primitive | Message Code | Data Link Layer Service | Service Description |
// +---------------------------+--------------+-------------------------+---------------------+
// | L_Poll_Data.con | 0x25 | Poll Data Service | |
// +---------------------------+--------------+-------------------------+---------------------+
// | | | | Primitive used for |
// | L_Data.ind | 0x29 | Data Service | receiving a data |
// | | | | frame |
// +---------------------------+--------------+-------------------------+---------------------+
// | L_Busmon.ind | 0x2B | Bus Monitor Service | |
// +---------------------------+--------------+-------------------------+---------------------+
// | L_Raw.ind | 0x2D | | |
// +---------------------------+--------------+-------------------------+---------------------+
// | | | | Primitive used for |
// | | | | local confirmation |
// | L_Data.con | 0x2E | Data Service | that a frame was |
// | | | | sent (does not mean |
// | | | | successful receive) |
// +---------------------------+--------------+-------------------------+---------------------+
// | L_Raw.con | 0x2F | | |
// +---------------------------+--------------+-------------------------+---------------------+
// Add.Info Length = 0x00 - no additional info
// Control Field 1 = see the bit structure above
// Control Field 2 = see the bit structure above
// Source Address = 0x0000 - filled in by router/gateway with its source address which is
// part of the KNX subnet
// Dest. Address = KNX group or individual address (2 byte)
// Data Length = Number of bytes of data in the APDU excluding the TPCI/APCI bits
// APDU = Application Protocol Data Unit - the actual payload including transport
// protocol control information (TPCI), application protocol control
// information (APCI) and data passed as an argument from higher layers of
// the KNX communication stack
//
datagram[i++] =
KnxConnection.ActionMessageCode != 0x00
? KnxConnection.ActionMessageCode
: (byte)0x11;
datagram[i++] = 0x00;
datagram[i++] = 0xAC;
datagram[i++] =
KnxHelper.IsAddressIndividual(destinationAddress)
? (byte)0x50
: (byte)0xF0;
datagram[i++] = 0x00;
datagram[i++] = 0x00;
var dst_address = KnxHelper.GetAddress(destinationAddress);
datagram[i++] = dst_address[0];
datagram[i++] = dst_address[1];
datagram[i++] = (byte)dataLength;
datagram[i++] = 0x00;
datagram[i] = 0x80;
KnxHelper.WriteData(datagram, data, i);
return(datagram);
}
