MATLAB: Connect to Linux PC running code using external mode

externalmodesimulink

I have two Linux PCs connected via ethernet, one has MATLAB installed while the other doesn't. I have generated C code from a Simulink model. Now I want to use external mode to run the generated code on the other Linux machine. Is this possible? If yes, how?

Best Answer

Yes, it is possible. Here are the additional steps that you need to perform to enable communication between the two PCs through External mode:

1. Please go to the Interface section in the configuration parameters and choose "tcpip" as the "Transport layer" (the "External mode" checkbox should be enabled).

2. Now specify the required arguments in the "MEX-file arguments" box (<http://www.mathworks.com/help/rtw/ref/mex-file-arguments.html https://www.mathworks.com/help/rtw/ref/mex-file-arguments.html>).

3. Also, please make sure that the correct "Device vendor" and "Device type" has been set in the Hardware Implementation section of the configuration parameters.

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In order to get this to work with "coder.ceval()", you have to use "coder.target()" to specify that the functionality that you are leveraging is from the target device. This will cause the specific code to only run on the target device (when deployed) and not when run on the host device (simulated, etc.). Please see the following example:

x = 0;
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else
    % simulating in Simulnk
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Here, "coder.target('Rtw')" will prevent the next few lines from being executed when running on your host computer, where "Arduino.h" is not defined. For more information on "coder.target()", please refer to the following documentation page:

https://www.mathworks.com/help/coder/ref/coder.target.html

In this case, you will only want to generate code and not build and run the resulting executable. If you try to run the executable on your host computer, it will fail, since "Arduino.h" and its dependencies are not on the path on your host machine.

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This issue may occur if you have not opened a connection on a MATLAB with the server interface. This means, that on the machine where you run "tcpip" with "server" as the "NetworkRole", it is necessary to use "fopen" to open the connection. Make sure the server runs the following commands:

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Best Answer

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