/// <summary>
/// Generates the APDU for a GET request </summary>
/// <param name="att"> LnDescriptor describing the object to be accessed </param>
/// <returns> byte array representation of the APDU </returns>
/// <exception cref="DlmsException"> </exception>
public byte[] requestGet(LnDescriptor att)
{
try
{
System.IO.MemoryStream stream = new System.IO.MemoryStream();
stream.WriteByte(Constants.xDlmsApdu.NoCiphering.GET_REQUEST);
stream.WriteByte((byte)(connection.datablock.blockNum == 0 ? 1 : 2));
stream.WriteByte((byte)(parameters.priority | parameters.serviceClass | Constants.INVOKE_ID));
if (connection.datablock.blockNum != 0)
{
//stream.WriteByte(ByteBuffer.allocate(4).putInt(connection.datablock.blockNum).array());
stream.Write(new byte[] { (byte)(connection.datablock.blockNum >> 24), (byte)(connection.datablock.blockNum >> 16), (byte)(connection.datablock.blockNum >> 8), (byte)(connection.datablock.blockNum) }, 0, 4);
}
else
{
//Array.Reverse(att.getClassId());
stream.Write(att.getClassId(), 0, att.getClassId().Length);
//Array.Reverse(att.getObis());
stream.Write(att.getObis(), 0, att.getObis().Length);
stream.WriteByte((byte)(att.getIndex()));
stream.WriteByte((byte)(att.getRequestData().Length == 0 ? 0 : 1));
//Array.Reverse(att.getRequestData());
stream.Write(att.getRequestData(), 0, att.getRequestData().Length);
}
return(packFrame(Constants.xDlmsApdu.GlobalCiphering.GET_REQUEST, stream.ToArray()));
}
catch (IOException)
{
throw new DlmsException(DlmsException.DlmsExceptionReason.INTERNAL_ERROR);
}
}
/// <summary>
/// Generates the APDU for a ACTION request </summary>
/// <param name="att"> LnDescriptor describing the object to be accessed </param>
/// <returns> byte array representation of the APDU </returns>
/// <exception cref="DlmsException"> </exception>
public byte[] requestAction(LnDescriptor att)
{
try
{
System.IO.MemoryStream stream = new System.IO.MemoryStream();
stream.WriteByte(Constants.xDlmsApdu.NoCiphering.ACTION_REQUEST);
stream.WriteByte(1);
stream.WriteByte((byte)(parameters.priority | parameters.serviceClass | Constants.INVOKE_ID));
//Array.Reverse(att.getClassId());
stream.Write(att.getClassId(), 0, att.getClassId().Length);
//.Reverse(att.getObis());
stream.Write(att.getObis(), 0, att.getObis().Length);
stream.WriteByte((byte)(att.getIndex()));
stream.WriteByte((byte)(att.getRequestData().Length == 0 ? 0 : 1));
//Array.Reverse(att.getRequestData());
stream.Write(att.getRequestData(), 0, att.getRequestData().Length);
return(packFrame(Constants.xDlmsApdu.GlobalCiphering.ACTION_REQUEST, stream.ToArray()));
}
catch (IOException)
{
throw new DlmsException(DlmsException.DlmsExceptionReason.INTERNAL_ERROR);
}
}
/// <summary>
/// Generates the APDU for a SET request </summary>
/// <param name="att"> LnDescriptor describing the object to be accessed </param>
/// <returns> byte array representation of the APDU </returns>
/// <exception cref="DlmsException"> </exception>
public byte[] requestSet(LnDescriptor att)
{
try
{
System.IO.MemoryStream stream = new System.IO.MemoryStream();
stream.WriteByte(Constants.xDlmsApdu.NoCiphering.SET_REQUEST);
byte[] data = att.getRequestData();
if (data.Length > (connection.maxPduSize - 50))
{
if (connection.datablock.nextBlockNum == 1)
{
connection.datablock.setData(data, connection.maxPduSize - 50);
//Set-Request-With-First-Datablock
stream.WriteByte(2);
stream.WriteByte((byte)(parameters.priority | parameters.serviceClass | Constants.INVOKE_ID));
//Array.Reverse(att.getClassId());
stream.Write(att.getClassId(), 0, att.getClassId().Length);
//Array.Reverse(att.getObis());
stream.Write(att.getObis(), 0, att.getObis().Length);
stream.WriteByte((byte)(att.getIndex()));
stream.WriteByte(0);
stream.WriteByte(0);
//Array.Reverse(connection.datablock.getNextBlockNum());
stream.Write(connection.datablock.getNextBlockNum(), 0, connection.datablock.getNextBlockNum().Length);
byte[] blockdata = connection.datablock.getNextBlock();
if (blockdata.Length > 128)
{
stream.WriteByte(0x81);
}
stream.WriteByte((byte)(blockdata.Length));
//Array.Reverse(blockdata);
stream.Write(blockdata, 0, blockdata.Length);
}
else
{
//Set-Request-With-Datablock
stream.WriteByte(3);
stream.WriteByte((byte)(parameters.priority | parameters.serviceClass | Constants.INVOKE_ID));
if (connection.datablock.nextIsLast())
{
stream.WriteByte(1);
}
else
{
stream.WriteByte(0);
}
//Array.Reverse(connection.datablock.getNextBlockNum());
stream.Write(connection.datablock.getNextBlockNum(), 0, connection.datablock.getNextBlockNum().Length);
byte[] blockdata = connection.datablock.getNextBlock();
if (blockdata.Length > 128)
{
stream.WriteByte(0x81);
}
stream.WriteByte((byte)(blockdata.Length));
//Array.Reverse(blockdata);
stream.Write(blockdata, 0, blockdata.Length);
}
}
else
{
//Set-Request-Normal
stream.WriteByte(1);
stream.WriteByte((byte)(parameters.priority | parameters.serviceClass | Constants.INVOKE_ID));
//Array.Reverse(att.getClassId());
stream.Write(att.getClassId(), 0, att.getClassId().Length);
//Array.Reverse(att.getObis());
stream.Write(att.getObis(), 0, att.getObis().Length);
stream.WriteByte((byte)(att.getIndex()));
stream.WriteByte(0);
//Array.Reverse(att.getRequestData());
stream.Write(att.getRequestData(), 0, att.getRequestData().Length);
}
return(packFrame(Constants.xDlmsApdu.GlobalCiphering.SET_REQUEST, stream.ToArray()));
}
catch (IOException)
{
throw new DlmsException(DlmsException.DlmsExceptionReason.INTERNAL_ERROR);
}
}
