Source file

Hi, Dialog
I make new c and h files, but failed to import to my project.
For peripheral_demo project, I copy my c and h file to 'demo' directory, but it doesn't appear in project view.
So I tried to import them, there is a item in Import -- General\File system , and then select the 'demo' folder , the IDE told they have been in the project ....

How to import my c and h file into project?

Best Regards

James