Possible bug found in listArduinoLibraries()

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Clayton Allen
Clayton Allen 2024-12-3
回答： Sreeram 2024-12-11
Greetings,
I have followed the tutorial for the creation of a HelloWorld Arduino Addon Library. Upon completion I was unable to get the addon to register so I subsequently followed the documention for Custom Arduino Library Issues.
1.
clear classes
2.
rehash toolboxcache
Produces a warning:
Warning: Function license has the same name as a MATLAB built-in. We suggest you rename the function to avoid a potential name conflict.
3.
lib = listArduinoLibraries();
Produces a list of warnings and errors
Warning: The following error was caught while executing 'onCleanup' class destructor:
Output argument "status" (and possibly others) not assigned a value in the execution with "matlabshared.ddux/HWSDKDataUtility/dataUpdateImpl" function.
Error in matlabshared.internal.DataUtility/dataUpdate
Error in matlabshared.ddux.HWSDKDataUtilityHelper/integrateData
Error in listArduinoLibraries>@()integrateData(dduxHelper) (line 17)
c = onCleanup(@()integrateData(dduxHelper));
^^^^^^^^^^^^^^^^^^^^^^^^^
Error in onCleanup/delete (line 25)
obj.task();
^^^^^^^^^^
Error in listArduinoLibraries (line 72)
end
^
And of course, my HelloWorld addon doesn't register. Perhaps this potential bug might be the cause?
Cheers,
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Les Beckham
Les Beckham 2024-12-5
Interesting. Did you try which -all license in Matlab Online? The error messages that you showed seemed to indicate an issue with that command.
Clayton Allen
Clayton Allen 2024-12-5
/MATLAB/toolbox/matlab/connector2/shadowfiles/shadows/license/license.m
built-in (/MATLAB/toolbox/local/license) % Shadowed

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回答（1 个）

Sreeram
Sreeram 2024-12-11
Hi Clayton,
I also encountered the same warnings and errors when calling “listArduinoLibraries()” in MATLAB Online.
I fixed it by running the following snippet before calling “listArduinoLibraries()”:
system('mkdir -p overloads/+matlab/+ddux/+internal');
system (['echo -e "function status = logData(identification, varargin) \\n status = true; \\n end" > overloads/+matlab/+ddux/+internal/logData.m']);
addpath('./overloads');
Regarding warning about ‘license’, I remember seeing in an older documentation of “rehash” that this functionality was not supported in MATLAB Online. This might be contributing to the unexpected behaviour.

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