Raspberry Pi Simulink Port Problem

Hello, I am building a vehicle running with Simulink based on raspberry pi. For this, I am using some digital in/out ports and the raspberry pi camera.

I tested GPIO in/out ports and camera board seperately. All worked fine.

Since I am using the the digital in/out blocks and the camera blocks with raspberry pi in external mode it seems that there is an error. I am getting this error message:

The following error occurred during deployment to your hardware board: Another process (PID: 1430) is using the TCP/IP port 17725 selected for External mode communication. Either choose a different port number by opening Hardware Implementation > Target Hardware Resources > External mode pane or kill the process with PID 1430.

I am quite new to Matlab/simulink, hence I do not understand the problem. Is there anybody who could help me?

Kind regards, Alex :)

Answer 1

[Tom Oakes]

Hi, this happened to me not too long go but with the PID of 913.

Assuming you have the same problem as I had, if you type onto the command prompt of the screen the device is connected to;

ps -A

a list of all the processes running on the device is presented and hopefully you should see the process ID of 1430 (In my case it was another Simulink model). If that's the case then simply type;

sudo kill 1430

And hopefully the process should be terminated. If you're unsure type ps -A again and see if it remains.

Hope this helps! Like you I have little experience with MATLAB and Simulink and the errors are a right pain!

[Ascension]

Hi Tom, just a small correction, you forgot to add -9 to the command sudo kill -9 XXXX. Thanks!

Answer 2

[Sam McDonald]

Most error messages in Simulink try to point you to the cause of the issue and give you hints or suggestions to try. Have you tried the suggested action? Choose a different port number by opening Hardware Implementation > Target Hardware Resources > External mode pane and entering in a number between 1024 to 65535. It seems like another process is using that same port number, so you could also try killing that process if you are able to. It depends, of course, on what that process is and if you want to kill it.

If you are looking for more information on the Hardware Implementation settings, visit the MathWorks Documentation page for the Support Package for Raspberry Pi:

https://www.mathworks.com/help/supportpkg/raspberrypi/ref/run-on-target-hardware-pane.html

[Rami Abousleiman]

Thanks for stating the obvious Sam