protected byte[] CreateRequestStatusDatagramCommon(string destination_address, byte[] dgram, int cemi_start_pos)
{
int i = 0;
if (this._connection.ActionMessageCode != 0x00)
{
dgram[cemi_start_pos + i++] = this._connection.ActionMessageCode;
}
else
{
dgram[cemi_start_pos + i++] = 0x11;
}
dgram[cemi_start_pos + i++] = 0x00;
dgram[cemi_start_pos + i++] = 0xAC;
if (KNXHelper.IsAddressIndividual(destination_address))
{
dgram[cemi_start_pos + i++] = 0x50;
}
else
{
dgram[cemi_start_pos + i++] = 0xF0;
}
dgram[cemi_start_pos + i++] = 0x00;
dgram[cemi_start_pos + i++] = 0x00;
byte[] dst_address = KNXHelper.GetAddress(destination_address);
dgram[cemi_start_pos + i++] = dst_address[0];
dgram[cemi_start_pos + i++] = dst_address[1];
dgram[cemi_start_pos + i++] = 0x01;
dgram[cemi_start_pos + i++] = 0x00;
dgram[cemi_start_pos + i] = 0x00;
return(dgram);
}
protected byte[] CreateActionDatagramCommon(string destination_address, byte[] data, byte[] header)
{
int i = 0;
int data_length = KNXHelper.GetDataLength(data);
// HEADER
byte[] dgram = new byte[data_length + 10 + header.Length];
for (i = 0; i < header.Length; i++)
{
dgram[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
//
if (this._connection.ActionMessageCode != 0x00)
{
dgram[i++] = this._connection.ActionMessageCode;
}
else
{
dgram[i++] = 0x11;
}
dgram[i++] = 0x00;
dgram[i++] = 0xAC;
if (KNXHelper.IsAddressIndividual(destination_address))
{
dgram[i++] = 0x50;
}
else
{
dgram[i++] = 0xF0;
}
dgram[i++] = 0x00;
dgram[i++] = 0x00;
byte[] dst_address = KNXHelper.GetAddress(destination_address);
dgram[i++] = dst_address[0];
dgram[i++] = dst_address[1];
dgram[i++] = (byte)(data_length);
dgram[i++] = 0x00;
dgram[i] = 0x80;
KNXHelper.WriteData(dgram, data, i);
return(dgram);
}
