[WiPy 2.0] cannot configure Pin to generate interrupts

[Corbie]

I am trying to set up a simple button on WiPy 2.0 with Expansion board. I have updated the firmware to v1.8.6:

import os
os.uname()
# (sysname='WiPy', nodename='WiPy', release='1.6.3.b1', version='v1.8.6-463-g468b9d27 on 2017-02-16', machine='WiPy with ESP32')

When I am trying to register a event handler like they did in the docs, the irq() function seems not to be available:

from machine import Pin

def pin_handler(pin):
    print(pin.id())
   
pin_int = Pin('G17',  mode=Pin.IN,  pull=Pin.PULL_DOWN)
pin_int.irq(trigger=Pin.IRQ_RISING,  handler=pin_handler)
#   File "<stdin>", line 7, in <module>
# AttributeError: 'Pin' object has no attribute 'irq'

Am I doing something wrong or is the function really missing?

Is there another way to get a simple, external button working on the WiPy?

[jmarcelino]

You're following the Micropython.org docs but this is done differently on the latest Pycom boards.

Follow the Pycom documentation instead:

https://docs.pycom.io/

more specifically what you need to is to create a Pin.callback() function:

https://docs.pycom.io/pycom_esp32/library/machine.Pin.html#machine.pin.callback

[Corbie]

Thank you, this has solved the issue:

pin_int = Pin('P10', mode=Pin.IN, pull=Pin.PULL_DOWN)
pin_int.callback(Pin.IRQ_RISING, pin_handler)