**ERROR** Invalid pin number, "unusable" pins in `new-gpio` (IRQ version)? How to make them accessible.

[Kris Kelvin]

Re: Alternative C++ Code for GPIO Access (now with Interrupts and EXPLED)

I found that some pins, by some reason, staying inaccessible (**ERROR** Invalid pin number, GPIOAccess::isPinUsable returns true in new-gpio), despite of that I made them as "inputs" with fast-gpio. Is there any way to make them "free"?

fast-gpio works just fine. But I would like to utilize IRQ instead of permanent polling.

[Omega2p]