ESP8266 Community Forum

Just trying to use a rotary encoder on my NodeMCU.

But I am struggling with the interupts.
With an UNO there I could use only Interrupt 0/1 on Pin 2/3
Calling like this:

In the Reference of ESP/Arduino I have seen this:

Pin interrupts are supported through attachInterrupt, detachInterrupt functions. Interrupts may be attached to any GPIO pin, except GPIO16. Standard Arduino interrupt types are supported: CHANGE, RISING, FALLING.

But I am missing the relation between interrupt and pin-number
What is the right interrupt, if I want to use GPIO4?

It suppose to be direct relation, GPIO4 is pin4, so your code should have attachInterrupt(4, doEncoderA, CHANGE);

Oh you are right. Easier, than I thought
THX