Hi Guilhem, I think fprintf is the only soltuion that would work for you. For arrays, perhaps you can just write your own myprintf function that contains a FOR loop and calls fprintf for each element, as to print something like [1,2,3] etc.
Plotting data is harder. All of MATLAB graphis/plotting functions are implemented in C++ and that code is not portable to RaspberryPi. So, plot can't work there. What you can do instead is use some third-party plotting library, call it from your MATLAB code using coder.ceval. Or maybe write your own C function that takes the data from the generated code, and then calls the 3rd party plotting library like QWT (https://qwt.sourceforge.io/)
