Hi Justin!
Thanks for the info on the rt needs.
Am 02.04.2017 um 20:32 schrieb Justin Pearson:
> Thank you for mentioning libpruio. I don't know very much about how device
> tree overlays interact with linux kernel drivers, so until I can find a
> good description of that, I'm inclined to use a m
Hi Jelena, thanks for your message. See my inline responses:
On Sun, Apr 2, 2017 at 9:39 AM, Jelena Freiherr
wrote:
> Am Sonntag, 2. April 2017 17:26:10 UTC+2 schrieb Justin Pearson:
> > On the 3.18 kernel, I was able to control the PWM with the PRU
> without needing the PRU to initialize th
Hi Justin!
I just tried to answer you mail, but the google board doesn't work (once
again). I try to answer from my mail client, which I never did before.
Am Sonntag, 2. April 2017 17:26:10 UTC+2 schrieb Justin Pearson:
> On the 3.18 kernel, I was able to control the PWM with the PRU without
Thank you TJF, I never would have known about that register if you hadn't
mentioned it. One more question (see below):
On Sat, Apr 1, 2017 at 9:20 PM, TJF wrote:
> Am Samstag, 1. April 2017 22:18:30 UTC+2 schrieb Justin Pearson:
>>
>> Are you saying that the only way to get PWM in a 4.x kernel i
Am Samstag, 1. April 2017 22:18:30 UTC+2 schrieb Justin Pearson:
>
> Are you saying that the only way to get PWM in a 4.x kernel is by
> modifying am33xx-clocks.dtsi?
>
No. The kernel driver should also work (untested). But in your case
(controlling the PWM subsystem by PRU code) you have to m
Hi TJF, thanks for your note. Are you saying that the only way to get PWM
in a 4.x kernel is by modifying am33xx-clocks.dtsi? Also, how can I verify
whether the register is set correctly?
Thanks,
Justin
On Friday, March 31, 2017 at 9:48:33 AM UTC-7, TJF wrote:
>
> Hi Justin!
>
> The initial dev
Hi Justin!
The initial device tree changed between kernel 3.8 and 4.x. In 4.x the
Control Module register *pwmss_ctrl* (@664h) gets cleared at boot. This
register can get used to sychronize several PWM subsystems. A feature that
isn't supported by the kernel nor by any of it's drivers. So no re
Sorry, I'm using
# uname -a
Linux beaglebone 4.1.12-bone-rt-r16 #3 Mon Jan 9 19:44:59 PST 2017 armv7l
GNU/Linux
# lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 8.7 (jessie)
Release: 8.7
Codename: jessie
On Thursday, March 30, 2017 at 12:21:
