How to link .m file and mex file

Hello, I am doing a project in image processing. I have a .m file(which gets an image and perform modulation) and a c mex file (for analog output data generation to USB 205). I want to link the 2 files( .m and mex) so that the modulated data from .m file goes to mex file for data transmission. What are the possible ways to do this?

Thanks in advance!!

[James Tursa]

From you description, just call the mex file from the m file.

[Walter Roberson]

Mex files by definition implement a MATLAB compatible calling interface. Mex is the API used by internal MATLAB extensions (Well, at least Mex is the documented part of it.)

Thus you just make a MATLAB call, providing appropriate parameters like you normally would.

[Darshan Ramakant Bhat]

https://www.mathworks.com/help/matlab/matlab_external/standalone-example.html

Some example is present here

[Steven Lord]

Another alternative, if MEX is not a good option for your situation (the interface is fixed and so you can't add a MEX interface for example) would be to try loadlibrary and calllib. See this documentation page for more information.

[A R]

Thank a lot for your response. I just compiled my mex file and called it from my .m file and it works. But i dont know how to pass my data (1x256) to mex for further operations. like what changes has to be done in my mex file so that it accepts 1x256 data. Does anyone have any examples and willing to share?

[James Tursa]

Can you describe in more detail what you want the mex function to do? What would be the input(s) and what would be the output(s)? There are examples shipped with MATLAB. Or I can post an example later today if needed, but it would help if I had an idea what you wanted the function to do.