When GPIO overlay is necessary ?

Hi BBB experts,

i’ve studied some tutorials about GPIO overlay and everything is working but i wonder when is really necessary to build an overlay to set my pins …
my application runs anyway if i don’t make an overlay and i use only export - setdirection - setvalue.

thanks everyone.

An interesting idea indeed, I will give it a try.

The pins can be exported via a bash script or through C++ command ???


Yes sure, look at derek tutorial and download his sources: