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 > <javascript:>> 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 <javascript:>. >> 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. For more options, visit https://groups.google.com/d/optout.
