69 lines
2.1 KiB
Matlab
69 lines
2.1 KiB
Matlab
function result = requestDREF( DREFArray, varargin )
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%requestDREF request the value of a specific DataRef from X-Plane over UDP
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%
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%Inputs
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% DREFArray: Cell Array of DataRefs to be requested
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% IP Address (optional): IP Address of the machine that will receive the data as a character array. Default is '127.0.0.1' (local machine)
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% port (optional): Port on the receiving machine where the data will be sent. Default is 49009 (XPlaneConnect). In general use 49009 to send to the plugin
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%
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%Outputs
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% result: cell array of resulting data where
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%
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%Use
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% 1. import XPlaneConnect.*;
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% 2. DREFArray = {'sim/cockpit2/controls/yoke_heading_ratio','sim/cockpit2/controls/yoke_roll_ratio'};
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% 3. result = requestDREF( DREFArray, '172.0.100.54' );
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%
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% Contributors
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% [CT] Christopher Teubert (SGT, Inc.)
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% christopher.a.teubert@nasa.gov
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%
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%BEGIN CODE
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import XPlaneConnect.*
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message = zeros(1,6);
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len = 7;
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status = -1; %#ok<NASGU> % no data
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%% Handle Input
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p = inputParser;
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addRequired(p,'DREFArray');
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addOptional(p,'IP','127.0.0.1',@ischar);
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addOptional(p,'port',49009,@isnumeric);
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parse(p,DREFArray,varargin{:});
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%% BODY
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% Header
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message(1:4) = 'GETD'-0;
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message(6) = length(p.Results.DREFArray);
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% DREFS
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for i=1:length(p.Results.DREFArray)
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message(len) = length(p.Results.DREFArray{i});
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message(len+1:len+message(len)) = p.Results.DREFArray{i};
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len = len+1+message(len);
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end
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% Send UDP
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status = sendUDP(message, p.Results.IP, p.Results.port);
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% Look for response
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for i=1:40
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data = readUDP();
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if length(data) > 1 % Received Data
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status = 0;
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counter = 7;
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nArrays = data(6);
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result = cell(nArrays,1);
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for j=1:nArrays
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sizeArray = data(counter);
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result{j} = typecast(uint8(data(counter+1:counter+sizeArray*4))','single');
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counter = counter + 1 + sizeArray * 4;
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end
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break;
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else
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result = cell(0,1);
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end
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end
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end |