How to save custom Simscape blocks?

Based upon a suggestion I got on this forum, I modified the Matlab code of a convective heat transfer block with the aim to create a custom Simscape block. But how do I save this as a Simscape block that I can use? According to instructions here and here, I did the following:

I made sure that I was working in a directory that is on the MATLAB path.

In this directory I created a subdirectory +Fridge, and saved the modified MATLAB code of the convective heat transfer block in this directory as varconvection.m

Then, from the parent directory of +Fridge, I ran the command ssc_build Fridge ....

Only thing that happens is that I get an error message: Generating Simulink library 'Fridge_lib' in the current directory 'D:\wvandervegte\SURFdrive\FALCON\Simulations' ... Warning: Not generating Simulink library 'Fridge_lib' as the MATLAB package 'Fridge' is empty and does not contain any MATLAB files (.m) or Simscape model files (.ssc).

However there is a .m file in this directory, namely varconvection.m

What am I doing wrong???

Any help greatly appreciated.

Answer 1

[Sebastian Castro]

Assuming your code is correct, all you have to do is change the extension of varconvection.m to varconvection.ssc.

Simscape source files use the .ssc extension, so ssc_build wasn't seeing one of those in your package folder.

- Sebastian

[Wilfred]

Thanks again! It works now. (I thought I already tried this but that was at an earlier stage when I had also made other mistakes)