When they say drop the clock speed on the bus, I am sure they mean to drop it down to 50kbps or 10 kbps, and see if it starts working. As a diagnostic, that would be strong indication of a timing problem in the PIC software.
If they are using the PIC hardware peripheral, then it is totally I2C compliant/conforming, although you could still screw up the response time servicing it slowly internally. If they are "bit-banging" the I2C interface, then anything can happen, depending on the quality of the programmer. --- Graham On Mon, May 15, 2017 at 11:33 AM, Graham Haddock <[email protected]> wrote: > What part number PIC? > --- Graham > > == > > On Mon, May 15, 2017 at 9:36 AM, 'Torsten K.' via BeagleBoard < > [email protected]> wrote: > >> Hi Graham, >> >> just for reference: The guys who built the motor controller confirmed >> that they are having trouble with newer kernels on the Raspberry PI, too. >> >> https://www.piborg.org/node/2428 >> >> They say it's probably a timing issue. And with all the information I >> collected so far I must assume they are probably true. ;-) >> >> I hope it's not the PIC itself that can't cope, but rather something that >> could be solved in software... >> >> Best, >> Torsten >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit https://groups.google.com/d/to >> pic/beagleboard/-cVwfP40L0M/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> To view this discussion on the web visit https://groups.google.com/d/ms >> gid/beagleboard/6eddd754-92b7-4ec8-bd01-b0aa3b500f9f%40googlegroups.com >> <https://groups.google.com/d/msgid/beagleboard/6eddd754-92b7-4ec8-bd01-b0aa3b500f9f%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/CANN_KV6WjSW0C7y6AAyYbmpEaynz5PptSq9Nn49nT%3DmGU3RbOQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
