KNX.net provides a KNX API for C#
This API allows to connect in both modes:
- Tunneling
- Routing
After connecting you will be able to send actions to the bus and receive messages from it.
The following datapoints are available in the API:
| DPT | input type | input range | output type | output range | Description |
|---|---|---|---|---|---|
3.007 |
int, float, long, double, decimal |
[-7,7] |
int |
[-7,7] |
Control dimming (steps) [0 stops] |
3.008 |
int, float, long, double, decimal |
[-7,7] |
int |
[-7,7] |
Control blinds (steps) [0 stops] |
5.001 |
int, float, long, double, decimal |
[0,100] |
decimal |
[0,100] |
Percentage (%) |
5.003 |
int, float, long, double, decimal |
[0,360] |
decimal |
[0,360] |
Angle (°) |
5.004 |
int, float, long, double, decimal |
[0,255] |
int |
[0,255] |
Percentage [0,255] (%) |
5.010 |
int, float, long, double, decimal |
[0,255] |
int |
[0,255] |
Counter Pulses |
6.001 |
int, float, long, double, decimal |
[-128,127] |
int |
[-128,127] |
Percentage (%) |
6.010 |
int, float, long, double, decimal |
[-128,127] |
int |
[-128,127] |
Counter Pulses |
9.001 |
int, float, long, double, decimal |
[-273,670760] |
decimal |
[-273,670760] |
Temperature in Celsius (°C) |
Also working but no implemented as datapoints (see below for better explanation):
- bit (lights, buttons)
- byte (dimmers, temperature difference, RGB)
static void Main(string[] args)
{
var connection = new KnxConnectionRouting();
connection.Connect();
connection.GroupAddressStyle = KnxGroupAddressStyle.ThreeLevel;
connection.KnxEventDelegate += Event;
// Parse GroupAddress from a string
connection.Action(KnxGroupAddress.Parse("5/0/2"), false);
Thread.Sleep(5000);
// Instantiate a three level GroupAddress
connection.Action(new KnxThreeLevelGroupAddress(5, 0, 2), true);
Thread.Sleep(5000);
}
static void Event(object sender, KnxEventArgs args)
{
Console.WriteLine($"New Event: device {args.DestinationAddress} has status {args.State}");
}Sending an action
connection.Action(new KnxThreeLevelGroupAddress(1, 1, 16), connection.ToDataPoint("9.001", 24.0f));
connection.Action(KnxGroupAddress.Parse("1/1/17"), connection.ToDataPoint("5.001", 50));Converting state from event
static void Event(object sender, KnxEventArgs args)
{
if (args.DestinationAddress.Equals(new KnxThreeLevelGroupAddress(1, 1, 16)))
{
decimal temp = (decimal)connection.FromDataPoint("9.001", args.State);
Console.WriteLine($"New Event: device {args.DestinationAddress} has status {temp}");
return;
}
if (args.DestinationAddress.ToString() == "1/1/17")
{
int perc = (int)connection.FromDataPoint("5.001", args.State);
Console.WriteLine($"New Event: device {args.DestinationAddress} has status {perc}");
return;
}
}Sending an action
connection.KnxStatusDelegate += Status;
connection.RequestStatus(KnxGroupAddress.Parse("1/1/16"));
connection.RequestStatus(KnxGroupAddress.Parse("1/1/17"));Converting state from status event
private static void Status(object sender, KnxStatusArgs args)
{
// Process only GroupAddresses (using pattern matching in C# 7.0)
if (!(args.DestinationAddress is KnxGroupAddress groupAddress))
return;
if (groupAddress.Equals(1, 1, 6))
{
decimal temp = (decimal)connection.FromDataPoint("9.001", args.State);
Console.WriteLine($"New Status: device {addr} has status {temp}");
return;
}
if (groupAddress.Equals("1/1/17"))
{
int perc = (int)connection.FromDataPoint("5.001", args.State);
Console.WriteLine($"New Status: device {addr} has status {perc}");
return;
}
}connection.Action(KnxGroupAddress.Parse("1/1/19"), true);
connection.Action(KnxGroupAddress.Parse("1/1/20"), false);
connection.Action(KnxGroupAddress.Parse("1/1/21"), 60);
connection.Action(KnxGroupAddress.Parse("1/1/22"), 0x4E);The only difference is how the connection object is created
connection = new KNXConnectionTunneling(remoteIP, remotePort, localIP, localPort);KNX supports 3 ways to represent GroupAddresses:
- 3-Level: MainGroup/MiddleGroup/SubGroup
- 2-Level: MainGroup/SubGroup
- Free: SubGroup
The used style is not transmitted with the packets and is only an artifical representation of a 2-byte address. To allow KNX.net to correctly translate received addresses you need to specify which style to use:
connection.GroupAddressStyle = KnxGroupAddressStyle.ThreeLevel;
connection.GroupAddressStyle = KnxGroupAddressStyle.TwoLevel;
connection.GroupAddressStyle = KnxGroupAddressStyle.Free;KNX.net supports extended group addresses, i.e. full 16 bit addresses.
If connecting in routing mode:
- make sure the system firewall allows incoming connections to the routing port (if not specified when connecting, default is
3671)
If connecting in tunneling mode:
- make sure the system firewall allows incoming connections to the specified
localPort
If sending actions is not working for you, you might need to define the parameter ActionMessageCode on the connection. Some KNX Router/Interfaces need this to be set to 0x29 for example.
connection = new KnxConnectionRouting();
connection.ActionMessageCode = 0x29;./packages/NUnit.ConsoleRunner/tools/nunit3-console.exe ./tests/KNXLibTests/bin/Release/KNXLibTests.dll --labels=On --nocolor --verbose --workers=1 --full --result:"./nunit-result.xml;format=nunit2"
./packages/NUnit.ConsoleRunner/tools/nunit3-console.exe ./tests/InfluxDB.FSharp.UnitTests/bin/Release/InfluxDB.FSharp.UnitTests.dll --labels=On --nocolor --verbose --workers=1 --full --result:"./nunit-result.xml;format=nunit2"
./packages/xunit.runners/tools/xunit.console.clr4.exe ./tests/FunctionalLiving.Parser.Tests/bin/Release/FunctionalLiving.Parser.Tests.dll