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Description

This version has been updated to manage string type DataRef and a compile time list of DataRefs and Commands. An example project has been added with a very simple usage on a Windows Form project.

Read data and send commands to XPlane via UDP

XPlaneConnector can run on a raspberry or similar using Mono. You can send commands and subscribe to DataRef. An event OnDataRefReceived is fired every time the value of a subscribed DataRef changes. Should XPlane crash and restart, this connector can detect that DataRefs aren't being updated and will automatically request a new subscription.

Programming language: C#
License: MIT License
Tags: networking     Protocols     XPlane    
Latest version: v1.1

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README

XPlaneConnector

UPDATE TO VERSION 1.3

Some bug fixes in this release and library separation.

All DataRefs and Commands definitions has been migrated to a separate library XPlaneConnector.DataRefs

In this way the library itself keep its size as low as possible, while DataRefs can be references only if needed.

DataRefs versioning is now consistent with X-Plane version for easier matching, and it will be easier to update DataRefs and Commands definitions separately from the Connector itself.

In the future further libraries can be added (i.e. Zibo DataRefs or other add-ons specific DataRefs).

UPDATE TO VERSION 1.2

This version include support for .NET Standard 2.0 and .NET 4.6 in a single package

Read data and send commands to XPlane via UDP

XPlaneConnector can run on a raspberry or similar using .Net Core. You can send commands and subscribe to DataRef. An event OnDataRefReceived is fired every time the value of a subscribed DataRef changes. Should XPlane crash and restart, this connector can detect that DataRefs aren't being updated and will automatically request a new subscription.

Usage

NOTE: Every DataRef is always a float, even if the data type is different (int, bool, double, string, array). So if you need a bool you will obtain a float that is either 0 or 1.

Create the connector

The constructor takes the XPlane IP and port as parameters, default is 127.0.0.1 on port 49000

var connector = new XPlaneConnector(); // Default IP 127.0.0.1 Port 49000
var connector = new XPlaneConnector("192.168.0.100"); 
var connector = new XPlaneConnector("192.168.0.100", 49010); 

Sending a command

Just pass the command. A list of all the available commands has been created on XPlaneConnector.Commands Each command has a Description property with a brief description of its meaning.

connector.SendCommand(XPlaneConnector.Commands.ElectricalBattery1On);

Subscribe to a DataRef

You can subscribe to as many DataRef you want. In either way you have to call:

connector.Start();

In order to begin communication with X-Plane. Subscribing to DataRef can happen before or after calling Start.

A list of all managed DataRefs has been created inside:

XPlaneConnector.DataRefs

Each DataRef has a Description property with a brief description of its meaning.

To obtain DataRef value use the DataRef event: For DataRef "sim/cockpit/radios/com1_stdby_freq_hz" use XPlaneConnector.DataRefs.CockpitRadiosCom1FreqHz

connector.Subscribe(XPlaneConnector.DataRefs.CockpitRadiosCom1FreqHz, 5, (e, v) => {

    Console.WriteLine($"{DateTime.Now:HH:mm:ss.fff} - {e.DataRef} - {v}");
});

Strings (NEW)

If you need a string (example: sim/aircraft/view/acf_tailnum) it is managed as an array of floats containing an ASCII code on each value. Subscribing to sim/aircraft/view/acf_tailnum won't give you the tailnumber. In order to get the complete string it's necessary to subscribe to each character individually. Subscribing to sim/aircraft/view/acf_tailnum[0], sim/aircraft/view/acf_tailnum[1]... and so on (this DataRef is 40 byte long). A new class StringDataRefElement has been created to automatically manage this process. See below for usage.

// XPlaneConnector.DataRefs.AircraftViewAcfTailnum is a StringDataRef, in this case value is a string, not a float
connector.Subscribe(XPlaneConnector.DataRefs.AircraftViewAcfTailnum, 5, (element, value) =>
{

    Console.WriteLine($"{DateTime.Now:HH:mm:ss.fff} - {e.DataRef} - {v}"); // v is a string
});

NOTE: You must have already subscribed to a DataRef using the Subscribe method.

Press&Hold Commands (NEW 2020)

For commands that have a Press&Hold behaviour like the Ignite command, multiple calls of the SendCommand method is required. To simplify this, there's a new method StartCommand that handle the required code in a parallel Task. It returns a CancellationTokenSource, to stop the Command just call Cancel on this token.


var token = connector.StartCommand(XPlaneConnector.Commands.EnginesEngageStarters);
// Do other things 
// ...
// When you want it to stop
token.Cancel();