I'm trying to use the Matlab APPS ability. I have an application which runs fine. When it is finished, I hit the MS-x in the corner to close it and it gives me this error:
Error using @(hObject,eventdata)machineControlGui('controlPanel_CloseRequestFcn',hObject,eventdata,guidata(hObject)) Not enough input arguments.
Error in appinstall.internal.stopapp (line 7) feval(obj.ExistCloseFcn);
Error while evaluating figure CloseRequestFcn
The application runs fine on it's own and will close without hassle if not run under the APPS tab, but running it as an "APPS" causes the error and it won't close and I can't close Matlab either unless I kill the process using task manager.
I am using the application to control instruments and take data. It is quite a few long functions which are in separate files. I have downloaded another APPS and installed it without this problem. All that APPS functionality is contained in one m-file as opposed to mine, which is in several files, text files and excel files. I just can't close it....
I think it is the NI software. I have another machine it is running fine on using 2013a, but it has a file loaded which is called NI-USI126.96.36.19901, which is missing from the machine that has the error. It calls it the Universal Storage Interface (USI), though I can't see what storage would have to do with it, but maybe something didn't install correctly. Here is the Matlab code:
for countPort = 1:10; port = ['COM', num2str(countPort)]; try % OPSens = serial(port); OPSens = visa('ni',port); < First error here.. RSCNAME get(OPSens); set(OPSens,'timeout',5); %OPSens.terminator = 10;%linefeed (LF) character (ASCII hexadecimal <0x0A>) fopen(OPSens); serialUnitID = query(OPSens, 'SYST:IDN?'); % if error(lastwarn); % serialUnitID == ; if isempty(serialUnitID); error('COM port tricks eh?'); else comPortGold = 1; useThisComPort = port; break; end catch err % Try a different port. fclose(OPSens); lastwarn(''); % reset warning message end end
For what ever reason, suddenly the VISA drivers and Matlab interaction are not talking to the USB port and the object is not opening at all, so it cannot "fclose" the empty object. Somehow I was able to get the 2 machines to start behaving Friday. Now 1 of them has reverted back and is not working. The National Instruments software works fine to test the port, just opening it through Matlab isn't working.