to receive feedback in loop with out providing command- Newton Anderson camera.

Dear friends,

I am trying to build newton anderson camera GUI. Here I am using sdk commands provided by newtoncamera.

From the code below, I want GetAcquisitionProgress() to be called automatically i.e it should always looks for change in

'GetAcquisitionProgress()' and update the value inside [ret, acc, series] and not only when I provide 'value = islogging(obj)' command.

Hence, I request to please help if this is achieveable. I read something about making it listener(link attached) but I am still not able to understand how to implement.

https://de.mathworks.com/help/matlab/matlab_oop/events-and-listeners-concepts.html

function value = islogging(obj)

[ret, acc, series] = GetAcquisitionProgress(); CheckWarning(ret);

value = series;

end

Answer 1

[Jaimin]

Hi @Paramjit Yadav

To achieve continuous monitoring of the “GetAcquisitionProgress” function and automatically update the values without explicitly calling “islogging(obj)” I would reccomand using the MATLAB event listeners.

For a better understanding of creating event listeners and making calls, kindly refer to the following code snippet.

classdef CameraGUI < handle
    properties
        AcquisitionProgress
        TimerObj
    end
    
    events
        ProgressChanged
    end
    
    methods
        function obj = CameraGUI()
            % Initialize properties
            obj.AcquisitionProgress = 0;
            
            % Set up a listener for the ProgressChanged event
            addlistener(obj, 'ProgressChanged', @(src, event) obj.updateProgress());
            
            % Set up a timer to periodically check acquisition progress
            obj.TimerObj = timer('ExecutionMode', 'fixedRate', ...
                                 'Period', 1, ... % Check every second
                                 'TimerFcn', @(~,~) obj.checkProgress());
            start(obj.TimerObj);
        end
        
        function checkProgress(obj)
            [ret, acc, series] = GetAcquisitionProgress();
            CheckWarning(ret);
            if series ~= obj.AcquisitionProgress
                obj.AcquisitionProgress = series;
                notify(obj, 'ProgressChanged'); % Trigger the event
            end
        end
        
        function updateProgress(obj)
            % Update the GUI or perform any action needed when progress changes
            disp(['Acquisition Progress Updated: ', num2str(obj.AcquisitionProgress)]);
        end
    end
end

function [ret, acc, series] = GetAcquisitionProgress()
    % Mock implementation of GetAcquisitionProgress
    ret = 0;
    acc = 0;
    series = 0; % Random value to simulate progress
end

function CheckWarning(ret)
    % Mock implementation of CheckWarning
    if ret ~= 0
        warning('An error occurred.');
    end
end

For additional information on “Event and Listener Concepts” and “Overview Events and Listeners” please refer to the MathWorks Documentation.

Event and Listener Concepts: https://www.mathworks.com/help/matlab/matlab_oop/events-and-listeners-concepts.html

Overview Events and Listeners: https://www.mathworks.com/help/matlab/matlab_oop/learning-to-use-events-and-listeners.html

I hope this will be helpful.