As far as I remember the cookbook does not cover the ADC but I believe there are some simple ADC-read example directly in the image under /var/lib/cloud9/Techlab/.challenges, or here: https://github.com/beagleboard/cloud9-examples/blob/master/PocketBeagle/TechLab/.challenges/analogIn.pru0.c They are labeled for PocketBeagle but it's the same ti-am335x chip so they should work easily on the BBB.
Also this recent thread should be useful! https://groups.google.com/g/beagleboard/c/-WlvGEaqrKU Hope it helps! Pierrick Le vendredi 23 avril 2021 à 18:18:42 UTC-4, chen...@gmail.com a écrit : > Thanks Vinicius. This is a great recommendation! > > Cheng > > 在2021年4月23日星期五 UTC-4 下午5:49:03<vinicius...@gmail.com> 写道： > >> I recommend for some directions and concepts the pru cookbook >> >> https://markayoder.github.io/PRUCookbook/ >> >> Sent from my iPhone >> >> >> Em 23 de abr. de 2021, à(s) 18:46, Cheng Chen <chen...@gmail.com> >> escreveu: >> >> It's either remoteproc or uio right? To be honest, I don't know much >> about the difference. But I am following the book by Derek Molly and in his >> book, he promotes remoteproc. >> >> >> Regards, >> >> 在2021年4月23日星期五 UTC-4 下午5:38:16<lazarman> 写道： >> >>> Have you looked at libruio? it fix everything. >>> free support as well in group by TJ. >>> >>> >>> Sent from Yahoo Mail on Android >>> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature> >>> >>> On Fri, Apr 23, 2021 at 4:31 PM, pierric...@gadz.org >>> <pierric...@gadz.org> wrote: >>> >>> Have you check M Yoder PRU cookbook? >>> >>> Pierrick Rauby >>> >>> On 23 Apr 2021, at 16:56, Cheng Chen <chen...@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 >>> <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 beagleboard...@googlegroups.com. >>> 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 beagleboard...@googlegroups.com. >>> To view this discussion on the web visit >>> >>> >>> https://groups.google.com/d/msgid/beagleboard/585CFD31-D22E-4C60-A444-378EB8E47288%40gadz.org >>> >>> <https://groups.google.com/d/msgid/beagleboard/585CFD31-D22E-4C60-A444-378EB8E47288%40gadz.org?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 beagleboard...@googlegroups.com. >> >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/beagleboard/1184025e-6d73-4e43-b0b8-d78ffcc1466cn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/beagleboard/1184025e-6d73-4e43-b0b8-d78ffcc1466cn%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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/f7995bd3-678c-4965-ad96-b1f610e9ee6fn%40googlegroups.com.
