Thanks for the suggestion. This looks like a very well documented reference. I will take a look at it. Does it cover PRU based ADC? I cannot tell from the outline.
Cheng 在2021年4月23日星期五 UTC-4 下午5:31:18<[email protected]> 写道： > Have you check M Yoder PRU cookbook? > > Pierrick Rauby > > On 23 Apr 2021, at 16:56, Cheng Chen <[email protected]> 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 > <https://git.ti.com/cgit/pru-software-support-package/pru-software-support-package/tree/examples/am335x/PRU_ADC_onChip?h=master>, > > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/b0dc4e7b-edd7-45f7-b54b-28a9cedd6a2an%40googlegroups.com > > <https://groups.google.com/d/msgid/beagleboard/b0dc4e7b-edd7-45f7-b54b-28a9cedd6a2an%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- 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/ef463601-9417-4025-afe7-ddf7b49ff442n%40googlegroups.com.
