Error connecting Arduino hardware to MATLAB R2018b

I installed MATLAb support package for ardunio hardware. When I type a=arduino() in the workspace. I get the error message

>> a= arduino ()
Updating server code on board Mega2560 (/dev/cu.usbmodem14101). This may take a few minutes.
Undefined variable "ide" or class "ide.internal.getArduinoIDE

I'm using Mac by the way. Does anyone know what may be the problem?

[Walter Roberson]

I do not find any reference to that in the code. I find reference to ide.internal.getArduinoIDERootDir() . That is defined at

~/Documents/MATLAB/SupportPackages/R2018b/toolbox/realtime/targets/arduinoide/+ide/+internal/getArduinoIDERootDir.p

[Mohamed Elazab]

Hello Walter this is where it is originally located. I'm not sure what to do next.

~/Documents⁩/⁨MATLAB⁩/SupportPackages⁩/⁨R2018b/⁩⁨toolbox/⁩target/⁨supportpackages/⁩arduinobase/⁩⁨+codertarget/⁩+arduinobase⁩/+internal/getArduinoIDERootDir.p⁩

[Walter Roberson]

Try going into Add-Ons -> Get Add-Ons to get the Add-on Explorer, and search there for Arduino, and install MATLAB Support Package for Arduino Hardware.

I suspect you might have installed Simulink Support Package for Arduino Hardware.

[Mohamed Elazab]

I installed both actually. I don't think that's what's causing the error message.

[Walter Roberson]

Looks like I copied the directory wrong when I posted before

~/Documents/MATLAB/SupportPackages/R2018b/toolbox/realtime/targets/arduinoide/+ide/+internal/getArduinoIDERootDir.p

I installed the package this afternoon in response to your question. I do not have the toolbox/targets directory that you mention.

Answer 1

[Kestas Subacius]

This issue can be resolved by doing a clean re-installation, rather than a regular re-installation, of the "MATLAB Support Package for Arduino Hardware".

Please see the below resource for the steps to do a clean re-installation of a support package:

https://www.mathworks.com/matlabcentral/answers/318635-how-do-i-perform-a-clean-re-installation-of-a-support-package

Answer 2

[Madhu Govindarajan]

Have you tried uninstalling and reinstalling the support package? When installing these support packages if additional terminal windows open do not close them.