Load a .dll file in Simulink

Hi everyone,

Like mention the title I would like to know if is it possible to load a .dll file in Simulink (with a S-function for example). I'm a beginner at Simulink so please be as specific as you can.

Best regards

Vithuran

Answer 1

[Kaustubha Govind]

Yes, this should be possible. I would recommend that you first achieve the interface using plain MATLAB code. For help, see Calling Functions in Shared Libraries. Once you have written the MATLAB code to call into your DLL, you can then place the same code in a Level-2 MATLAB S-function to create a Simulink block for it.

Alternatively, you can write standard C code to call into the DLL, and use C S-functions instead.

[vithuran]

Thanks a lot for your answer. It's maybe a stupid question, but to use the 'loadlibrary' function you need to have the .dll and also a file .h, but I don't have the last one. I only have a .dll file. How am I going to use the loadlibrary function without this file?

Vithuran

[Kaustubha Govind]

Not sure, but I think people usually rig up their own header file with the function declarations of the functions exported from the DLL (please feel free to create a new question for this). Alternatively, you might be able to use C code to call into the library.