Use S-Function Block instead of S-Function Builder for handwritten Code

I´m using MatLab Simulink to control a DC Motor with PWM on a Raspberry Pi. As examples i used 'raspberrypi-driver-blocks'. The Problem now is, that I need the mdlterminate and mdlstart functions, that aren't supported in the S-Function Builder Dialog. I therefore edited the generated files (.c-File, .c-wrapper-File and .tlc-File) for my needs. I already read a post, which i can't find now, that recommended replacing the files built by the builder with my handwritten code to get the custom functions running. This unexpectedly works, but i want to use a 'normal S-Function-Block' instead of the Builder Block in my model, because it is a pain editing and expanding my functions. Also the non-permanent mask of a SF-Builder Block is unpleasantly.

I hope the problem is understandable, i´m a non-native speaker of english.

Answer 1

[Mark McBroom]

1. recompile the mexfile with the "mex" command 2. Put sfunction block in your model configure it to reference your new mex file 3. Optionally mask the sfunction block with parameters required for your sfunction

Answer 2

[Wenjie Shi]

The best answer to your question: https://www.mathworks.com/matlabcentral/answers/93717-why-can-the-functions-mdlstart-and-mdlterminate-not-be-edited-inside-the-s-function-builder-in-simul?requestedDomain=true