I had used debian 7.9 On Fri, 3 Feb 2017 at 7:05 PM, Hugh Frater <hugh.fra...@gmail.com> wrote:
> Thanks, I'm currently trying to downgrade to a 3.8 revision, 1st attempt > resulted in a 'won't boot, all the LEDs are on' so I guess I missed a step. > > > On Friday, 3 February 2017 13:31:00 UTC, abhilash h wrote: > > I had used debian . And it worked with busybox rfs and 3.8 kernel also . > > On Fri, 3 Feb 2017 at 6:20 PM, Hugh Frater <hugh....@gmail.com> wrote: > > Hi Abhilash, > > That's interesting, I will try and downgrade. May I ask what image you are > using now (Angstrom, Debian etc)? > > Hugh > > > On Friday, 3 February 2017 12:36:34 UTC, abhilash h wrote: > > Hi hugh, > > It never worked for me in 4.x kernel. I used to get same values. So i > swutched back to 3.8 kernel . > > On Fri, 3 Feb 2017 at 5:47 PM, Hugh Frater <hugh....@gmail.com> wrote: > > Hi, I'm getting started on a control system that needs to read 2x > quadrature encoders. One is a 1000 line, the other a 2000 line, but that is > really immaterial. I have the physical interface sorted (one needs a 26lv32 > to glue it to the BBB, the other is open collector), and the traces look > good on the scope. > > I'm running Jessie IOT with 4.4.36, I have disabled hdmi and universal > cape. I can load Nathaniel Lewis' overlays (supplied with the clean install > of Jessie) just fine with no errors in dmesg. > > However when I 'cat position' in each of the relevant sys entries (having > moved my encoder A/B lines to the relevant pins each time), I get a > changing value but it isn't meaningful. Am I missing something, or is it > more likely that I've blown up the inputs? I did power on the servo drive > (that was connected to the 26lv32 breakout board) by accident when the BBB > wasn't powered up. > > I've tested with a simple 24ppr 'audio style' encoder and again don't get > meaningful results. > > Do I have to mess about with config-pin for each of the eQEP inputs, or > should loading the relevant dtbo file for the eQEP module (0, 1 2 etc) set > up the pins for me? > > There's so much old documentation floating about it's hard to identify > what is current and what is no longer relevant now that the universal-cape > is in existence. > > Regards, Hugh > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard...@googlegroups.com. > > > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/c28fc73b-b2f4-4e73-8318-fd37599ef3b6%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/c28fc73b-b2f4-4e73-8318-fd37599ef3b6%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/3e6b19d3-1c4a-4fea-9833-0d20fa29071a%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/3e6b19d3-1c4a-4fea-9833-0d20fa29071a%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/39682a43-a9ad-42a6-9906-751c77e102bd%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/39682a43-a9ad-42a6-9906-751c77e102bd%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CA%2B-ZLitzTBsMAdXenQP3U9AJBN8LuRfq%2B56cM-bxkMuvOgWf_g%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
