[fedora-arm] Re: Raspberry Pi 3 B Gpio

2017-04-10 Thread Peter Robinson 
On Mon, Apr 10, 2017 at 1:44 PM, Richard Ryniker  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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[fedora-arm] Re: Raspberry Pi 3 B Gpio

2017-04-10 Thread Richard Ryniker 
>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.
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[fedora-arm] Re: Raspberry Pi 3 B Gpio

2017-04-02 Thread Peter Robinson 
 On Sun, Apr 2, 2017 at 8:19 PM,   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
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