MATLAB: WHAT IS THE PROBLEM IN MY TRY and CATCH? or How to call a function inside a function?? CAN SOMEONE HELP?? Im working with Arduino and GUI for monitoring for the thesis..

Question

THE CODE BELOW WORKS: ————————————————

s=serial ('COM43', 'BaudRate',9600,'DataBits',8,'StopBits',1,'InputBufferSize',212); fopen(s); count =0;

while (1)

    %data from power analyzer
    %InRange,-0250.6,0010.0,-0150.2,+0.6228,220.39,0.5806

            pause(0.1);
            data = fgets(s);
            [load3 P3 S3 Q3 PF3 V3 I3 main P S Q PF V I load2 P2 S2 Q2 PF2 V2 I2 load1 P1 S1 Q1 PF1 V1 I1] =...
                strread(data,'%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s','delimiter',',');
            %%%%%%GET DATA FROM PA TO MAIN GUI%%%%%%

            set(handles.LP4,'String',P);
            set(handles.LQ4,'String',Q);
            set(handles.LV4,'String',V);                                            
end 
-------------------------------------------------

BUT WHEN I CHANGE IT TO THIS CODE BELOW… no errors but nothing happens. what is the problem with the code??

—————————————

function serconnect_Callback(hObject, eventdata, handles)

if strcmp(get(hObject,'String'),'CONNECT')

    serPortn = get(handles.sercomm, 'Value'); 
    if serPortn == 1
        errordlg('Select valid COM port');
    else
        serList = get(handles.sercomm,'String'); 
        serPort = serList{serPortn};
        serConn = serial(serPort,'BaudRate',9600,'DataBits',8,'StopBits',1,'FlowControl','none');
        set(serConn, 'ReadAsyncMode', 'continuous');
        try
            fopen(serConn);
            handles.serConn = serConn;
            set(handles.serconnect, 'String','DISCONNECT');
            set(handles.sercomm, 'Enable','off');
            set(serConn, 'BytesAvailableFcn', {@myfunc,handles});
        catch e
            errordlg(e.message);
        end
    end

else

    set(hObject, 'String','CONNECT');
    set(handles.serconnect, 'BackGroundColor','default');
    set(handles.sercomm, 'Enable','on');
    fclose(handles.serConn);

end

guidata(hObject, handles);

—————— BELOW IS THE FUNCTION CALLED ——————-

try RxText = fscanf(handles.serConn); RxText=strtrim(RxText);

    %data from Arduino
    %InRange,-0250.6,0010.0,-0150.2,+0.6228,220.39,0.5806

if strcmp(RxText(1,1),'InRange')

      handles.counter = handles.counter + 1;
      %get Arduino data  
            [load3 P3 S3 Q3 PF3 V3 I3 main P S Q PF V I load2 P2 S2 Q2 PF2 V2 I2 load1 P1 S1 Q1 PF1 V1 I1] =...
                strread(RxText,'%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s','delimiter',',');
            %%%%%%GET DATA FROM PA TO MAIN GUI%%%%%%
            set(handles.LP4,'String',P);
            set(handles.LQ4,'String',Q);
            set(handles.LV4,'String',V);
    end
catch e
    disp(e)
end

—————- CAN SOMEONE HELP? then when I add 'InputBufferSize',212 in the the serconn still it does not work but have no errors ———-

Answer 1

Is RxText a 2D array? Have you considered strfind() instead of strcmp()?