Printing outputs when running C code in simulink via the coder.ceval function

Hi

I am running some C code in simulink via the coder.ceval. The code is somewhat complex, and originally printed outputs to a seperate file via writef, and error messages via fprintf. How would i go about printing the fprintf messages to some sort of consol when running it in simulink? It doesnt have to be a consol per say, but having some sort of message to the user for troubleshooting is neccisary.

Answer 1

[Peter O]

Not completely sure about this one, but if there is there a way to access the Simulink diagnostics panel from within the C code, that might be a nice place to put it:

https://www.mathworks.com/help/simulink/ug/programmatically-report-diagnostic-messages-in-diagnostic-viewer.html

If there's a way to pass in the function pointer reference to sldiagviewer.reportInfo(Message), you might be able to do that, but I don't know if Simulink is designed to handle external calls to that function. (I wouldn't bet on it working.) If you're able to wait for the C function to return to display the message, then you could probably make a field in the cfunc's return variable (or in one of its pass-by-ref arguments) that holds the diagnostics info/codes/messages, and use a little MATLAB glue code after it returns to call reportInfo().