Have you check M Yoder PRU cookbook? Pierrick Rauby
> On 23 Apr 2021, at 16:56, Cheng Chen <chenc2...@gmail.com> wrote: > > Hi all, > > I am new learner of Beaglebone Black and I was trying to follow the examples > of Programmable Real-time Unit software support package from TI. > I think there was a tutorial website previously but now it's obsolete. I > wonder if anybody knows where those materials is available? > The reason I asked is I am not able to successfully run any examples except > PRU_gpioToggle. In particular I am interested in RPMsg transfer between ARM > and PRU. For example, PRU_ADC_onChip, after I built the firmware and > userspace code, and run ./pru_adc_userspace -c 5. It just shows error > messages. > > Reading voltage at ADC Channel: 5 > /dev/rpmsg_pru30 could not be opened. > Trying to initialize PRU using sysfs interface. > ERROR: Could not open /dev/rpmsg_pru30 > > I think it should be just some minor issues like driver missing and such. But > I don't know where to start debugging. It would be nice that if anybody knows > where the tutorial is. I feel like I'm just trying in the dark. Thanks. > > Regards, > Cheng > > -- > 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/b0dc4e7b-edd7-45f7-b54b-28a9cedd6a2an%40googlegroups.com. -- 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/585CFD31-D22E-4C60-A444-378EB8E47288%40gadz.org.
