Acquiring and plotting continuous NI data doesn't work within app Designer. Please help.

Question

Marvin Zedler on 18 Jan 2018

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https://au.mathworks.com/matlabcentral/answers/377800-acquiring-and-plotting-continuous-ni-data-doesn-t-work-within-app-designer-please-help

Commented: Andrei on 11 Jun 2019

My code for acquiring and plotting live data works well outside the app Designer. However, i would like to include it in an App where it is executed by pushing a button from the user.

This is my code:

if true
  devices = daq.getDevices
            %session erstellen
            s = daq.createSession('ni')
            addAnalogInputChannel(s,'DEV1',0, 'Voltage')
            %abtastrate in Hz und Aufnahmedauer
            s.Rate = 1000
            s.DurationInSeconds = 5
            % plottet soblad fesstgelegte Anzahl an Datenpunkten generiert ist
            s.NotifyWhenDataAvailableExceeds = 10
            lh = addlistener(s,'DataAvailable',@(src,event) plot(event.TimeStamps, event.Data))
            s.startBackground();
end

This works well so far. But if i integrate it in a buttonpushed callback function within app Designer it doesn't work. Also it doesn't work if i try to plot it in UIAxes by adding plot(app.UIAxes, event.TimeStamps, event.Data)

Any help would be much appreciated. Thank you, Marvin