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Nested Bluetooth callback in Matlab GUI


Nested Bluetooth callback in Matlab GUI

By : Wenjie Fan
Date : November 16 2020, 06:23 AM
like below fixes the issue Create your bluetooth callback with the signature function rdatac_Callback(hGuiObject, hBtObject, eventdata). Now when creating the bluetooth object in your GUI-Callback you have the handle to your GUI-Object. This should be passed to your rdatac_Callback. You can achive this using the function handle @(hBtObject,eventdata)rdatac_Callback(hGuiObject, hBtObject, eventdata). The function rdatac_Callback is always called with the three parameters you need, but only two have to be passed to the anonymous function. hGuiObject is taken from the workspace where you created the anonymous function.
code :


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MATLAB GUI callback not setting values for another callback?

MATLAB GUI callback not setting values for another callback?


By : Aleksey Debrsky
Date : March 29 2020, 07:55 AM
I hope this helps . You have to write guidata(hObject, handles); at the end of your `pushbutton2_Callback to update the handles structure, so you can access it from the other function.
So, your resulting code would be:
code :
% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
handles.dog=1001
guidata(hObject, handles);

% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
handles
disp(num2str(handles.dog))   % <-- value not present
Best Design Pattern Practice Nested Bluetooth LE Device inside an Extended Bluetooth Device Class

Best Design Pattern Practice Nested Bluetooth LE Device inside an Extended Bluetooth Device Class


By : Ramazan Gümüşkar
Date : March 29 2020, 07:55 AM
hope this fix your issue I eventually implemented this using both "Local Inner Classes" as well as stand-alone class which can be instantiated by the main RemoteBluetoothDevice class. It turned out that the latter was a cleaner solution as it did not require sequential instantiations, which could be overlooked throughout the code.
How to pass serial communication object from one callback to another callback in matlab

How to pass serial communication object from one callback to another callback in matlab


By : user3281574
Date : March 29 2020, 07:55 AM
like below fixes the issue You're not using guidata and handles in the right way. I would think you'll need something like:
//first button
code :
 function start_Callback(hObject, eventdata, handles)
 s = serial('COM2');
 set(s,'BaudRate',9600);
 set(s,'Timeout',10);
 set(s,'ReadAsyncMode','continuous');
 fopen(s);
 fprintf(s,'%c','s');
 handles.s = s;
 guidata(hObject,handles);
 function stop_Callback(hObject, eventdata, handles)
 s = handles.s;
 fopen(s);
 fprintf(s,'%c','g');
 fclose(s)
 delete(s)
No Bluetooth gatt callback on some devices

No Bluetooth gatt callback on some devices


By : Michał Szecel
Date : March 29 2020, 07:55 AM
may help you . There was something elsewhere in my code causing this to malfunction. Reverted to an older commit and problem was solved.
issue with nested functions for gui callback matlab

issue with nested functions for gui callback matlab


By : sachin singh
Date : March 29 2020, 07:55 AM
I wish this helpful for you Within your function cback, you already have the variable tmp defined as a scalar with a value of 1 through 4. You then immediately try to add a field others to it with tmp.others = .... This explains your error:
code :
Field assignment to a non-structure array object.
function cback(~,~,editIndex)
    switch editIndex
        case 1
            ...
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