![]() Here you can enter a port number for the communication (default port number: 5502). I recommend starting with theĪndroidpfd787.xml protocol file which uses basic properties which areīelow you can find installation instructions for the three most common ways of starting Flightgear: command line, fgrun, and fgo!.įLIGHTGEAR SETUP (started from command line)ġ Download the protocol files (download links at the end of this page): You can try any of the protocol files provided here. Most probably will work with the BASIC configuration. *Other aircraft are not fully supported (yet), but they The following table explains the planes that supported and the protocol files that are needed. These are examples of the available PFDs:Įach selected plane uses a protocol file. Were not implemented however, workarounds may be available in the nearįuture. Some of these characteristics are not exposed in the Flightgear property The other PFDs include specific characteristics for eachĪircraft such as ILS indicators, DME, autopilot settings, Of them (Of course, there is no way I could have the chance to test all In Flightgear, and therefore this PFD should in principle work with most These are common properties for most of the planes Navigation information such as speed, altitude, heading, pitch, roll,Īnd vertical speed. WiFi network by using the generic protocol. It reads internal Flightgear properties through the ), but it should be trivial to make it more general purpose.This should provide a complete framework with which to write an autopilot controller in C.Comments please! udpserver.c output_protocol.xml input_protocol.The App "Flightgear PFD" currently supports 5 Primary Flight Display (PFD): BASIC, Boeing 777, Boeing 787-8, Boeing747-400, Airbus 330,Īnd Airbus 380. Currently, everything is hardcoded (port numbers, etc. Then it loops again, waiting for another packet from FlightGear. It waits until it receives a new packet, processes it, and sends a packet with control inputs back to FlightGear. The code makes a blocking call to read UDP data. I've implemented simple proportional control for roll and pitch to stabilize the aircraft. ![]() c program which I wrote to interact with the property tree and provide feedback controls to FlightGear. I chose UDP for ease.Here is how I ran FlightGear:fgfs -httpd=5500 -generic=socket,out,40,localhost,5000,udp,output_protocol -generic=socket,in,45,localhost,5010,udp,input_protocolI made the input data rate faster than the output data rate, because I would rather have FlightGear waiting for a new input value (when it doesn't get a new input, the last one persists) than the input being buffered.The -generic option allows one to specify a generic protocol, which was defined in the. xml protocol files which I used (copy to FlightGear's data/Protocol directory).The data can be passed through several means, serial port, tcp, udp, etc. You identify the nodes in the property tree which you want to interact with, the data types, the string formatting, and voila! Attached are the input and output. The protocol basically defines the format in which data is exchanged. I did this to figure out the sign convention for different properties.The property tree can be read from and written to using a "Protocol". Alternatively, in FlightGear you can type "/", and the property tree viewer will pop up and you can view the values changing in real time. you run FlightGear with the -httpd= option, it will run a webserver on where you can browse the property tree and refresh the current values. Figured out how to close the loop!Programs can interface with FlightGear through FlightGear's property tree.
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