Re: GPIO

[didier gaumet <didier.gaumet@gmail.com>]

Le 17/05/2024 à 06:16, manjunathreddy boreddy a écrit :
> Hello
>              I am using debian 12 bookworm i am unable to export gpio 
> pins by using echo 0 > /sys/class/gpio/export i am getting bash: echo : 
> write error earlier it was working fine when i re installed debian 
> package i am unable to export them. I am using intel i686 7600u 
> processor.and kernel version is 6.1.0-18-686-pae.can anyone help me in 
> solving this issue.
>
> Thanks&Regards,
> B.Manjunath Reddy.

Hello,

From what I understand, accessing GPIO thru /sys/class/gpio* is 
deprecated and thus discouraged. GPIO is to be accessed thru /dev/gpio*.
gpiod (interactive use) and libgpiod (programming use) Debian packages 
can be useful here.

linux kernel documentation, GPIO section:
https://www.kernel.org/doc/html/latest/driver-api/gpio/index.html
list of gpio related Debian packages:
https://www.kernel.org/doc/html/latest/driver-api/gpio/index.html