From: Kent Gibson <warthog618@gmail.com>
To: "Oliver Schütt" <oliverschuett@t-online.de>
Cc: linux-gpio@vger.kernel.org
Subject: Re: libgpiod 2.1.1: Installation under ubuntu 22.04.4
Date: Tue, 9 Apr 2024 10:15:42 +0800 [thread overview]
Message-ID: <20240409021542.GA6010@rigel> (raw)
In-Reply-To: <02ee3fea-5099-442e-9fcd-4167c7bb4a80@t-online.de>
On Mon, Apr 08, 2024 at 04:47:54PM +0200, Oliver Schütt wrote:
> Hi All,
>
> i am currently trying to utilize the GPIO pins on an embedded plattform,
> a PicoSYS PC with a Fintek SuperI/O chip and Ubuntu 22.04.4 installed.
>
> For this i want to use libgpiod and gpiod but i am very new to this and
> wondering if you could kindly give me some guidance.
>
> I downloaded the tar.gz for version 2.1.1 and extracted into my home
> directory, then installed autoconf and invoked the autogen.sh installing
> it into a dedicated folder in my home folder. After make and make install it
> seemed to install just fine, i could call gpiodetect from terminal but
> it gave me an error: "cannot find GPIO chip character device". Do i need
> to install it in a seperate directory or am i missing some
> driver/dependency?
>
The error means it cannot find /dev/gpiochip0, or more generally any
/dev/gpiochipN, and that is due to your kernel missing the appropriate
GPIO driver or configuration to setup that driver.
So your problem is with your kernel, not libgpiod.
Cheers,
Kent.
prev parent reply other threads:[~2024-04-09 2:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-08 14:47 libgpiod 2.1.1: Installation under ubuntu 22.04.4 Oliver Schütt
2024-04-09 2:15 ` Kent Gibson [this message]
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