Wild-cards in PacketEnd

[lars.jagdahl]

Can I use wild-cards in property PacketEnd for the DataPacket? My packet ends with two bytes; ETX (0x03) and a checksum.

[Roman Novgorodov]

Hello

Current version does not support wild-cards in PacketEnd and PacketBegin properties.

But you can resolve your situation by using OnPacketLength event of TnrDataPacket item.
You can add a new packet with following handler:

Code Select Expand


procedure TForm1.nrDataProcessor1DataPackets6PacketLength(
  Packet: TnrDataPacket; chData: Byte; var IsHandled: Boolean);
begin
  if chData = $03 then begin
    Packet.PacketLength := Packet.DataLength + 1;
    IsHandled := True;
  end;
end;


And all packets ******$03* will be detected.

Roman Novgorodov