Re: [fedora-arm] beaglebone black GPIO questions
On Thu, Jan 22, 2015 at 4:48 PM, Bram Van Steenlandt <bram(a)diomedia.be> wrote:
Hi,
I installed fedora 21 on a beaglebone black, I was amazed how easy this was
and how well most things work.
Good news.
I can't seem to get GPIO working, first dtc needed a patch for
the -@
option, after I finally seem to got that working
I now find I have no
/sys/devices/bone_capemgr* directory.
The capemgr bits are a custom kernel from BBone that never made it
upstream. The ability to do DeviceTree overlays only landed mainline
in 3.19 so you would need at 3.19rc5 [1] or later Fedora kernel. I've
got as far as testing that the kernel boots on the BBB with the kernel
with overlays enabled but not had enough time to test them.
Can anyone here confirm the status of GPIO (and other cape features)
? does
it require a custom kernel ? Am I missing someting ?
GPIO works, it doesn't need capes to do that. Basically overlays are
just a means of automating the configuration of all features on a
particular addon card whether you call it a cape, a hat or an
expansion board.
Depending on what device you're trying to configure you might just be
able to do it with a basic script.
Peter
[1] http://koji.fedoraproject.org/koji/buildinfo?buildID=604938