External mode option not showing on simulink matlab 2020a

I want to interface arduino with simulink in external mode but i didnt find external mode option in simulink.Please help me to find that 'external mode'option in main menu.

[Tommy Arno]

did you find an answer for this?

[TAHA]

same problem did you find an answer ?

[Samar]

Hello @Najam Islam, @Tommy Arno, @TAHA

It would be helpful if you provide any screenshot or screen recording where you are facing the issue. I am using MATLAB R2020a as well. But I am not facing this issue.

Answer 1

[Samar]

Hi @Najam Islam,

As per my understanding you are trying to find some button/option named “external mode” which will interface an Arduino board to Simulink. In Simulink there’s no specific “option” named “external mode”. Click on “Build, Start and Deploy” after configuring the Simulink model to be deployed on an Arduino board and that should run the Simulink model on “external mode”. The documentation on “Programming Arduino Uno with Simulink” is given below:

www.mathworks.com/videos/programming-arduino-uno-with-simulink-86316.html

You can also achieve the same by searching “external mode for Arduino” in the Search Bar in toolstrip of Simulink. The steps to execute this method is explained in the given link:

www.mathworks.com/help/releases/R2023a/slrealtime/gs/execute-real-time-application-in-external-mode-with-step-by-step.html

But this method works on version MATLAB R2023a and releases that follow.

[TAHA]

Hi @Samar,

I’m using MATLAB 2024a and trying to run an external mode simulation. I’ve connected my PC to an Arduino Mega 2560, but the external mode simulation option doesn’t appear in the list. I’m not sure what I’m missing in the configuration.

[Samar]

Hi @TAHA,

All the settings that are kept are correct. Follow the steps listed below:

1. Click on Apply, then Ok.
2. Then go ahead and save the Simulink file.
3. After that just click on Build, Deploy & Start button present in the toolstrip.

I have attached the following image for reference. The Simulink model should start generating code after verifying your model. After code generation, it will be dumped on the Arduino board and the board should function as intended.

Link for reference:

www.mathworks.com/help/releases/R2024a/simulink/supportpkg/arduino_ref/getting-started-with-arduino-hardware.html

Hope this helps. Feel free to comment if you have any other issues.

[TAHA]

Hi @Samar I followed your instructions and it's work

, But to monitor the Blocks in simulink it is necessary to select these cases

with this configuration it works correctly without any problems .

thank you so much @Samar