Hey ! I think I have the same issue and none of the answers has worked.

[AlexandreLarribau]

          Hey ! I think I have the same issue and none of the answers has worked. 

I am listenning 5 pins. And I try to guess which has raised the interrupt.

p1 = machine.Pin(1, machine.Pin.IN)
p2 = machine.Pin(2, machine.Pin.IN)
p4 = machine.Pin(4, machine.Pin.IN)
p5 = machine.Pin(5, machine.Pin.IN)
p6 = machine.Pin(6, machine.Pin.IN)

def handle_pwm_interrupt(pin):

print("the pin is : ")
print(pin)

p1.irq(trigger=machine.Pin.IRQ_FALLING | machine.Pin.IRQ_RISING, handler=handle_pwm_interrupt)
p2.irq(trigger=machine.Pin.IRQ_FALLING | machine.Pin.IRQ_RISING, handler=handle_pwm_interrupt)
p4.irq(trigger=machine.Pin.IRQ_FALLING | machine.Pin.IRQ_RISING, handler=handle_pwm_interrupt)
p5.irq(trigger=machine.Pin.IRQ_FALLING | machine.Pin.IRQ_RISING, handler=handle_pwm_interrupt)
p6.irq(trigger=machine.Pin.IRQ_FALLING | machine.Pin.IRQ_RISING, handler=handle_pwm_interrupt)

when I do this the display is "Pin(GPIO4, mode=IN)".
I tried pin.name(), pin.id(), pin.id and each time i get :"File "", line 16, in handle_pwm_interrupt
AttributeError: 'Pin' object has no attribute 'name'"

And with id(pin) i get "268703464" which doesn't help me much to know which pin it is.

Do you have advices ?

Originally posted by @AlexandreLarribau in #2612 (comment)

[rkompass]

You have the pin object in the interrupt handler. So you should be able to compare like:

if pin == p1:
    do_something1()
elif pin == p2:
    do_something2()
elif pin == p3:
    do_something3()
... 

and so on. Getting the pin number from the pin object is a known cumbersomeness in Micropython: You have to extract it from the string representation. Like:
gpio_id = int(str(pin).split(", ")[0][4:]) which worked on the RPi Pico.
For the RP2 I found another way, that is not simpler though, iirc.

I see now I repeated old answers/advices.

In the headings you state: None of the answers has worked.

Please elaborate what you tried and how it didn't work.

Perhaps you wanted to urge on this problem (is this correct English?). If you wanted to start a query on that feature (having a pin.id() function) I would support it. But consider: Pins are sometimes numbers, sometimes letters, ...

[robert-hh]

I'll convert that to a discussion, which is the better place to deal with it.

[robert-hh]

Ok.- So i hooke it up to a board. Two problems with that sample script came along:

• You cannot use Pin(1), because that is TX of the UART. If you define that as Input, you loose the connection to REPL
• Pin(6) does not exist.

Besides that, here a sample script with one of the solutions:

import machine

p2 = machine.Pin(2, machine.Pin.IN)
p4 = machine.Pin(4, machine.Pin.IN)
p5 = machine.Pin(5, machine.Pin.IN)

def handle_pwm_interrupt(pin):
    global p2, p4, p5, p6
    if pin is p2:
         print("the pin is : p2")
    elif pin is p4:
         print("the pin is : p4")
    elif pin is p5:
         print("the pin is : p5")

p2.irq(trigger=machine.Pin.IRQ_FALLING , handler=handle_pwm_interrupt)
p4.irq(trigger=machine.Pin.IRQ_FALLING , handler=handle_pwm_interrupt)
p5.irq(trigger=machine.Pin.IRQ_FALLING , handler=handle_pwm_interrupt)

Tested with a Wemos D1 Mini and a signal generator. I do not know your application and what you want to do with the pin, but the basic mechanism works. Alternatively you could define a separate callback for each pin, and call a common handler by these.