Just be aware, you cannot recycle the power on the BBB because it lacks the circuitry necessary to ensure 3v3 - 1v8 never exceeds 2V. You will find this circuitry on the Octavo eval board. Without this circuitry, the processor will die eventually after cycling the power 100s of times.
Regards, John > On Dec 21, 2016, at 6:00 AM, Jason van Belzen <[email protected]> > wrote: > > I understand that an external battery cape is the best solution. > Do you know if the following is possible from linux perspective: > We run on battery and DC power > If we detect DC power loss, we close all running processes > Only kernel stays active > Kernel clocks itself down to a very low clockrate > Kernel checks periodically if power is restored > If power is restored, kernel gives itself a reboot > Is something like this feasible or is this a very bad idea? > > Jason > > Op woensdag 21 december 2016 14:42:25 UTC+1 schreef Gerald: > In my experience, and external battery is the way to go. I designed a cape > for that a log time ago. That let's you support multiple types of battery > chemistry and multiple configurations. > > Gerald > > > On Wed, Dec 21, 2016 at 7:37 AM, William Hermans <[email protected] > <javascript:>> wrote: > > > On Wed, Dec 21, 2016 at 6:26 AM, Jason van Belzen <[email protected] > <javascript:>> wrote: > Thanks for your reply. > > How does this issue damage the processor? > > Jason > > As Gerald already said, I do not believe it does either. What does happen > however is that the board when in this state through the PMIC wont always > reset from the switch. Meaning, you have to completely disconnect the input > power, reconnect it, and then reset before the board will restart. > Additionally, some people claim that the board when in this state continues > to draw power. I don't doubt that, I've just never personally tested that. > > Anyway, it's probably simpler to design a cape that deals with all this for > you. Either that, or use an external battery / charging system that provides > 5v directly to the board. In either case, you'll probably need / want an > external MCU involved . . . > > -- > For more options, visit http://beagleboard.org/discuss > <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] <javascript:>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CALHSORoLgJdptWzQ2hYQzpcDj0yT2vmzUMm-stxFori1LmbMig%40mail.gmail.com > > <https://groups.google.com/d/msgid/beagleboard/CALHSORoLgJdptWzQ2hYQzpcDj0yT2vmzUMm-stxFori1LmbMig%40mail.gmail.com?utm_medium=email&utm_source=footer>. > > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. > > > > -- > Gerald > > [email protected] <javascript:> > http://beagleboard.org/ <http://beagleboard.org/> > [email protected] <javascript:> > > > -- > For more options, visit http://beagleboard.org/discuss > <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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/90255b76-49bc-4414-9c7f-dc5e9dbd788c%40googlegroups.com > > <https://groups.google.com/d/msgid/beagleboard/90255b76-49bc-4414-9c7f-dc5e9dbd788c%40googlegroups.com?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout > <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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/A5402C2F-9F64-459C-A62B-CA9CFF291943%40gmail.com. For more options, visit https://groups.google.com/d/optout.
