Hi Pierrick, Thanks for the recommendation. They look very useful references. I will read them over. Appreciate your help!
Cheng 在2021年4月23日星期五 UTC-4 下午6:34:47<pierric...@gadz.org> 写道： > 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. 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