arduino nano (ATMEGA328P) interrupt FALLING is doing CHANGE

[jps2000]

Attaching interrupt to PD2 or PD3 should handle RISING, CHANGE and FALLING behavior.
However FALLING is actually doing CHANGE. RISING is working properly!

[per1234]

Is this really related to a problem with the documentation content?

[jps2000]

First it is something that is not working.
Hence one can mention that in doc or repair it

[e-ika]

Yes, seems something that isn't working

[per1234]

I've been doing some experiments and I can't manage to reproduce this issue. FALLING is working just as expected for me.

I'm going to close this but if @jps2000 or @e-ika will provide me with enough information to reproduce the issue, I'll be happy to re-open it.

Note that if you use a switch or similar to trigger the interrupt, you could indeed get a FALLING interrupt when the pin goes HIGH. The reason is that contact bounce will actually cause several transitions from HIGH to LOW and back before the pin reaches a steady state. A more suitable source of a clean interrupt signal for testing is another Arduino board running the Blink example.