I'll give 7.9 a go and let you know my findings, thanks. On Friday, 3 February 2017 13:40:05 UTC, abhilash h wrote: > > I had used debian 7.9 > On Fri, 3 Feb 2017 at 7:05 PM, Hugh Frater <[email protected] > <javascript:>> 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 <[email protected]> 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 <[email protected]> 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 [email protected]. >>>>> >>>>> >>>>>> 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 [email protected]. >>>> >>> 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 [email protected] <javascript:>. >> 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/7502f82c-ed74-4b74-9999-ebcd51bb91e4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
