Bug in ffm-plugin: 5th and following inputs don't trigger event listeners

[DieterHolz]

If you want to attach 8 (more than 4) buttons to the pi via digital pins, only the first 4 buttons are handled correctly. All subsequent buttons don’t deliver any stateChangedEvents.

When going back to gpiod-plugin without any further change in software and hardware, everything works as expected.

So it’s definitively a problem in the ffm-plugin.

[FDelporte]

According to @copilot this seems to be related to the use of virtual threads which get pinned to the 4 cores of the RPi as they are waiting for feedback...

A change is available in #623
@DieterHolz would it be possible to test this?

[eitch]

@DieterHolz thanks for the bug report. Copilots explanation makes absolute sense.