> > *So yeah, I will try out your steps and let you know, but I have one > assignment hence bit stuck with it.. please give me a day to try out...*
No big hurry. I was just putting that out there in case you wanted to experiment with it. I think for your end goal, needing 20Khz, what I propose is a dead end. However I still think it is a good learning experience, and perhaps useful for other things. 2.5k-3k samples a second is still pretty good. Just not for your end goal. On Thu, Oct 1, 2015 at 12:36 PM, William Hermans <[email protected]> wrote: > Well, using the ADC from userspace as I've shown in that post should be > able achieve ~3k samples a second. Using Continuous mode, I've read up to > around 10k. > > Also, I happened upon DR Molloy's companion site for the "exploring the > Beaglebone" book > , and noticed he demonstrates using a couple of different external ADC's > through the PRU's. One @100k, the other at ( I think he said ) just above > 1msps. Where then the PRU's were approaching their max speed I guess. > Anyway, it's neat to read about, but for me, I think userspace one-shot > mode will be plenty. Even when experimenting with MPPT charge controlling > on our solar system here. > > On Thu, Oct 1, 2015 at 12:08 PM, Rathin Dholakia <[email protected] > > wrote: > >> Cool, Thanks a lot, William..!! >> >> >> And one good news, first of all for me (of course) but for you and TJF as >> well. Its that I talked with my professor and we have agreed that its ok >> *for now* if our sampling rate is low around 1.2 KHz or so no hassle of >> external ICs and stuff at least for now... later on I can refine + Update >> my implementation as I gain momentum.. :-) >> >> So yeah, I will try out your steps and let you know, but I have one >> assignment hence bit stuck with it.. please give me a day to try out... >> >> Sincerely, >> Rathin >> >> On Friday, October 2, 2015 at 12:27:40 AM UTC+5:30, William Hermans wrote: >>> >>> Here you go Rathin, something to experiment with in the future. >>> http://www.embeddedhobbyist.com/2015/10/beaglebone-black-adc-getting-started/ >>> >>> I need to edit the post and add the packages needed in order to compile >>> the demonstration executable with gcc, but that is not too much of a >>> hurdle. *sudo apt-get install build-essential* should take care of that. >>> >>> On Thu, Oct 1, 2015 at 9:54 AM, William Hermans <[email protected]> >>> wrote: >>> >>>> Agreed. >>>> >>>> On Thu, Oct 1, 2015 at 9:33 AM, Rathin Dholakia <[email protected]> >>>> wrote: >>>> >>>>> Gentleman, >>>>> I know I am in no capacity to say anything to both of you coz you both >>>>> are great in own field. So I just want to request you that, *please >>>>> calm down*. >>>>> >>>>> and >>>>> >>>>> Sorry I was busy whole day so couldn't experiment what you suggested, >>>>> TJF . But I will do it now and will post my response or queries. >>>>> >>>>> but please Calm down.. >>>>> >>>>> On Wednesday, September 30, 2015 at 1:46:06 AM UTC+5:30, Rathin >>>>> Dholakia wrote: >>>>>> >>>>>> Dear Community Members, >>>>>> >>>>>> I am trying to implement a fast 8 channel Analog capture using on >>>>>> board ADC on BBB. I know there are only 7 available on pin header, but >>>>>> as I >>>>>> am starting off & learning I am ok with count of 7. :) >>>>>> >>>>>> I just wanted to have an opinion about the approach to opt for, What >>>>>> would be the most optimum (& preferably faster to implement) option to >>>>>> achieve it? >>>>>> >>>>>> I have read quite a few articles and thread (& more confused ) and >>>>>> currently I am using libpruio >>>>>> <http://beagleboard.org/project/libpruio/> for implementing it but >>>>>> as of now even after configuring libpruio I am only getting 900 - 1000 >>>>>> samples per seconds. >>>>>> >>>>>> So, is it my configuration wrong or for such high speed I should opt >>>>>> for external ADC? or something else? >>>>>> >>>>>> I am completely NEW to EMBEDDED domain. So please pardon me. >>>>>> >>>>>> It would be great if someone could guide me, precisely towards some >>>>>> direction. >>>>>> >>>>>> Sincerely, >>>>>> Rathin >>>>>> >>>>> -- >>>>> 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]. >>>>> 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]. >> 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. 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