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Opening GPIO errno 22

MortenRickMortenRick
in General
I try to setup a GPIO pin 26 on my Raspberry Pi 4 Rev1.5 
But I get this error in the GPIO overwiew tab
"Opening GPIO: writing 'export': Invalid argument [errno 22]"
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Comments

  • RepetierRepetier
    Just tested this on our image and it worked. You might want to check if 22 is the correct number. On newer images this is not always the case. Run on linux console
    cat /sys/kernel/debug/gpio
    to see the numbers you need to use. Especially for pi 5 I know there is a difference. On bookworm with pi 4 I have it is identical to BCM numbering without offset.

    Eventually it is an old error. Make a change and save and it might init then. the export file is where you write which pins you want to control. Are you on our image or an official pi image?
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