ESP8266 Community Forum

- Sat Aug 22, 2015 2:46 pm #26804 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:

Code: Select all  attachInterrupt(0, doEncoderA, CHANGE);

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?

my ESP8266: ESP-01 V2 / ESP-12E (NodeMCU)
ESP8266 Arduino add-on
Arduino IDE 1.6.5

- Sat Aug 22, 2015 3:36 pm #26811 It suppose to be direct relation, GPIO4 is pin4, so your code should have attachInterrupt(4, doEncoderA, CHANGE);

- Sat Aug 22, 2015 8:25 pm #26835 Oh you are right. Easier, than I thought
THX

my ESP8266: ESP-01 V2 / ESP-12E (NodeMCU)
ESP8266 Arduino add-on
Arduino IDE 1.6.5

- Sat Aug 22, 2015 8:52 pm #26837