> > *Very much agree with you - even though I don't want to use a battery, it > seems more and more than a battery is a necessity for field use of the BBB, > which would explain the existing connector.* >
Having a battery still does not solve two other problems. - Does not solve situations when a powered halt occurs. - Does not solve situations where USB is required. A "powered halt" is something akin to issuing shutdown now -h while there is still power coming in through the barrel jack, USB, or battery. I suppose while coming in over the header too, but I've not tested this. Anyway, when the board is "local" this is easily fixed by pressing the reset button on the board. Or, sometimes removing power - completely. When remote however . . . this proves to be a serious problem, which is only, and currently solvable by using an external device to "press" the button for you. A "smart watchdog" of sorts. As for the USB, only a power cycle will solve this situation. When powered by battery only and the input voltage is less than 5V. You lose the USB in software, and it will not come back until at least a reboot occurs. In situations when the system must stay up, a UPS may make the most sense. Then to be 100% clear. There is no battery connector. There are 4 test points, were soldering 4 pins can make a connector possible. Other situations where the power goes away, and comes back quickly. Or where power comes back, and goes away quickly are problems too. Which can easily be solved as well . . . On Mon, May 2, 2016 at 4:29 PM, Robert Nelson <[email protected]> wrote: > > > On Mon, May 2, 2016 at 6:19 PM, William Hermans <[email protected]> wrote: > >> Robert has had 1 or more Beagleboard's running a read only file system >> since . . . What Robert ? 2011 ? But you can search this group, and find >> him talking about them in a few different posts. >> > > If you install an image the old way: > > http://elinux.org/BeagleBoardDebian#Debian_.28jessie.29 > > via "setup_sdcard.sh" there is a "--ro" flag.. > > It might still work... > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ > > -- > 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/CAOCHtYgqCu8EaqnweV50NR5hgh7MzjOpArPoaJQSMh1H4gbHDg%40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CAOCHtYgqCu8EaqnweV50NR5hgh7MzjOpArPoaJQSMh1H4gbHDg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORozfH%3DhOBU8kEXh-92N5jHwiD6_LMtfKBZVo3q2FcLn2w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
