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Hi,
I would like to ask, is it any possibilities to use the GPIO headers from a python program
or from the userspace to control switches via the GPIO headers?
If not out of the box, but is there any possibilities, to write a device tree overlay?
Thanks,
sgfdhsg
On Sun, Apr 2, 2017 at 8:19 PM, <csaba.oszlnszky(a)gmail.com> wrote:
Hi,
I would like to ask, is it any possibilities to use the GPIO headers from a python
program or from the userspace to control switches via the GPIO headers?
If not out of the box, but is there any possibilities, to write a device tree overlay?
Yes, there's python3-libsoc which should support the RPi. There's some
tools in the kernel-tools for gpio, the lsgpio is one to see the
available ones. In terms of DT overlay, we have all the bits in Fedora
26 (u-boot, kernel, compiler) to support it but I've not had time to
test and document the process, I'd love help there for test and docs
or plan (hope) to get it done by F-26 GA.
Peter
Yes, there's python3-libsoc which should support the RPi.
libsoc uses the old, deprecated sysfs interface to access GPIO resources
from user space. I wrote a Python module to use the newer, file
descriptor ioctl interface. See:
http://ryniker.org/raspberrypi/Fedora/gpiofd.py
I welcome reports of problems, or suggestions for improvement.
On Mon, Apr 10, 2017 at 1:44 PM, Richard Ryniker <ryniker(a)alum.mit.edu> wrote:
>Yes, there's python3-libsoc which should support the RPi.
libsoc uses the old, deprecated sysfs interface to access GPIO resources
from user space. I wrote a Python module to use the newer, file
descriptor ioctl interface. See:
http://ryniker.org/raspberrypi/Fedora/gpiofd.py
I welcome reports of problems, or suggestions for improvement.
I would sooner a issue/PR files upstream against libsoc instead of yet
another GPIO library.
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csaba.oszlnszky＠gmail.com -
Peter Robinson -
Richard Ryniker