i got this 'Failed to add edge detection' on pi4B 4G

[kgbplus]

i got this instead on pi4B 4G

root@raspberrypi:~# sudo python gpiotest.py  
Failed to add edge detection

Originally posted by @tyjtyj in https://github.com/kgbplus/gpiotest/issue_comments/693561612

[kgbplus]

same with raspberry pi3B+, return error 'Failed to add edge detection'

Originally posted by @RiadySantoso82 in https://github.com/kgbplus/gpiotest/issue_comments/694761322

[kgbplus]

Please read this and this Try:

1. Update you Raspberry OS install
2. sudo apt update; sudo apt install --reinstall raspberrypi-sys-mods;sudo reboot
3. Disable 1-wire interface with raspi-config

[Gaboris]

Sadly this fix did not help in my case on RPI 4 4GB with the latest 32bit Raspberry OS (Buster).

Based on the links even checking /dev/gpiomem didn't help since all permissions were right.

[kgbplus]

Could you please:

1. Provide me image of your current sd card?
2. Try to clean install current version of Raspberry Pi OS and try again?

[EdKok]

Same error for me as well. RPi4 4GB. Have multiple Python scripts working with GPIO just fine.

[tuctboh]

Hi,

Getting this on RPi 4 8G Kernel 6.1.21-v8+ Debian 11 / Bullseye

Happens when its initializing (initGpio) , in the GPIO.add_event_detect on channel 14. I have to unload and reload the i2c-bcm2835 module to get functionality back. Otherwise, if I jump that out for GPIO14 things seem to work fine. Why is 14 an issue?

Tnx, Tuc

[kgbplus]

Maybe it depends on the settings of a serial port which is on GPIO 14, 15? Could you please check?

[tuctboh]

So the hat I have doesn't mention what GPIO pins it uses, just I2C ports. So I'm not sure what GPIO its using.