COM Object needs to be initialized properly

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Sarah Crimi 2018-8-28

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https://ww2.mathworks.cn/matlabcentral/answers/416580-com-object-needs-to-be-initialized-properly

评论： Sarah Crimi 2019-1-28

I am connecting to a COM object (Bode Analyzer 100 from Omicron). However, since I am making a GUI, I need to initialize these variables to be empty so that I can pass them from function to function. However when I do, matlab complains that they are not the right type of variable. What type is this?

These are the 3 commands I use:

automationInterface = actxserver('OmicronLab.VectorNetworkAnalysis.AutomationInterface')    
bode = automationInterface.Connect();
OnePortMeasurement=bode.Impedance.CreateOnePortMeasurement;

Thanks, Sarah

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Sarah Crimi 2018-8-29

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The error that I am getting is below. It only happens when I run the collect data code more than once. It seems like when I press the 'x' button, it is not fully closing the COM and leaving some kind of connection open. Thanks, Sarah C.

Error using COM.OmicronLab_VectorNetworkAnalysis_AutomationInterface/Connect
Error in check_Adafruit_Bode_on (line 50)
                bode = automationInterface.Connect();
Error in ArrayGUI>acquiredata_pushbutton_Callback (line 156)
    [bode, automationInterface, OnePortMeasurement, bodeflag,
    automationInterfaceflag,OnePortMeasurementflag] =
    check_Adafruit_Bode_on(handles.bodeflag, handles.automationInterfaceflag,
    handles.OnePortMeasurementflag, handles.bode, handles.automationInterface,
    handles.OnePortMeasurement);
Error in gui_mainfcn (line 95)
        feval(varargin{:});
Error in ArrayGUI (line 43)
    gui_mainfcn(gui_State, varargin{:});
Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)ArrayGUI('acquiredata_pushbutton_Callback',hObject,eventdata,guidata(hObject)) 
Error using uiwait (line 81)
Error while evaluating UIControl Callback

sandeep singh 2018-11-26

Hello

Even i am trying to connect, but i want to know whether it is connected using serial com port

Sarah Crimi 2019-1-28

Hello,

I connected using COM port.

I actually had to make a button that properly turned off the COM port. So, when the x is used, it still throws an error. But when I use the button to turn off the GUI, I can turn it on again. If I stop a test early, I still have to reboot matlab.

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