Pinpong irq not working

Duo
1

Hello,
I have used the pinpong lib to turn on and off the IO and that works good.
Now I trying to use a Lora module sx1278 and would like to use the interrupt to know when a new message is received.

I found this example and have tried to use that on GP22 and GP16:

I get following error:
Traceback (most recent call last):
File “/root/interrupt.py”, line 20, in
btn.irq(trigger=Pin.IRQ_FALLING, handler=btn_falling_handler)
File “/usr/lib/python3.9/site-packages/pinpong/board.py”, line 339, in irq
self.obj.irq(trigger, handler)
File “/usr/lib/python3.9/site-packages/pinpong/board.py”, line 266, in irq
self.board.res"irq"
File “/usr/lib/python3.9/site-packages/pinpong/extension/milkvDuo.py”, line 144, in irq
gpio_fd = os.open(“/sys/class/gpio/gpio508/value”, os.O_RDONLY)
FileNotFoundError: [Errno 2] No such file or directory: ‘/sys/class/gpio/gpio508/value’

I have checked and I do not have any gpio508.

Not sure if I have missed something important or if this is expected?

2

Usually, what you’re showing means you haven’t switched the pin to the right mode.

In my case, the snippet you referenced here doesn’t produce error messages.
Moreover, it immediately reported

--falling---
pin =  0

Which pins are you using in your code, and what are their pin multiplexing settings?
Can check with duo-pinmux -r and change with duo-pinmux -w:

[root@milkv-duo]~# for pinID in 16 25; do duo-pinmux -r "GP$pinID"; done;
GP16 function:
[ ] SPINOR_MISO
[ ] SPINAND_MISO
[v] GP16

register: 0x300103c
value: 3
GP25 function:
[v] GP25
[ ] IIS1_DI
[ ] IIS2_DO
[ ] IIS1_DO

register: 0x300112c
value: 3
3

Thanks for the answer @hannahKobain :slight_smile:
You are correct that the example code works, I did not even try to use GP0 that the example was using :blush:
But I still have issues with using the other GPIOs

Yes, I using pinmux as you describe to secure the pin functionality.

[root@milkv-duo]~# for pinID in 0 1 16 22; do duo-pinmux -r “GP$pinID”; done;
GP0 function:
JTAG_TDI
UART1_TX
UART2_TX
[v] GP0
IIC0_SCL
WG0_D0
DBG_10

register: 0x300104c
value: 3
GP1 function:
JTAG_TDO
UART1_RX
UART2_RX
[v] GP1
IIC0_SDA
WG0_D1
WG1_D0
DBG_11

register: 0x3001050
value: 3
GP16 function:
SPINOR_MISO
SPINAND_MISO
[v] GP16

register: 0x300103c
value: 3
GP22 function:
PWR_SEQ2
[v] GP22

register: 0x3001068
value: 3

When using GP0 as in the example the gpio508 is created so I don’t get the error message anymore after that.
But… I have not tested all GPIOs but I only getting it to work on GP0. When changing “btn = Pin(Pin.D0, Pin.IN)” to let say “btn = Pin(Pin.D1, Pin.IN)” it is still using GP0 for the interrupt and not GP1 but [print("pin = ", pin] prints “pin = 1”.

So I only getting irq to working on GP0 and when trying to use another GPIO it is still using GP0 to listen for an interrupt signal.

I don’t know but I guess it has something to do with the creation of gpio508 and gpio508 configruation?