This is a .NET Core library that allows communication with KNXnet/IP routers and gateways using either the routing or the tunneling protocol. It provides a simple and easy-to-use interface for sending and receiving KNX telegrams over IP as well as device discovery.

The library can be installed via NuGet package manager. Simply search for knx-dotnet and install the package to your .NET project.

dotnet add package knx-dotnet --version 0.3.0-alpha

Make sure you search for PreRelease packages, as there is currently no stable release available!

var routingClient = new KnxNetIpRoutingClient(
    options =>
    {
        options.DeviceAddress = "1/1/2";
    });

routingClient.KnxDeviceDiscovered += (_, args) =>
{
    Console.WriteLine($"Discovered device: {args.FriendlyName} - ConnectionString: {args.ConnectionString}");
};

await routingClient.ConnectAsync();
await routingClient.DiscoverAsync();

using Knx.KnxNetIp;

// create a Routing client
var routingClient = new KnxNetIpRoutingClient();

// connect to the KNXnet/IP gateway
await routingClient.Connect();

// create a fully qualified knx message
var message = new KnxMessage
{
    MessageType = MessageType.Write,
    MessageCode = MessageCode.Request,
    Priority = MessagePriority.Auto,
    SourceAddress = new KnxDeviceAddress(1, 1, 2),
    DestinationAddress = new KnxLogicalAddress(1, 1, 28),
    TransportLayerControlInfo = TransportLayerControlInfo.UnnumberedDataPacket,
    DataPacketCount = 0,
    Payload = new DptBoolean(false).Payload
};

// and send the message
await routingClient.SendMessageAsync(message);

// or use the read or write extensions to keep it as simple as possible
tunnelingClient.Write(KnxAddress.Logical(1,1,28), new DptBoolean(true));

using var tunnelingClient = new KnxNetIpTunnelingClient(
    new IPEndPoint(IPAddress.Parse("10.0.2.5"), 3671),
    KnxAddress.Device(1, 1, 2));

await tunnelingClient.Connect();

tunnelingClient.Write(KnxAddress.Logical(1,1,1), new DptBoolean(true));

• Siemens N148/21 Gateway
• Weinzierl KNX IP Router 750
• ...

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

MIT License

Copyright (c) 2023 Christian Daniel

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.