External RTC is the best solution. You could add a battery to the BBB and use it with the right SW. But, depending on how many days you want it to hold time, it may or may not work for you.
Gerald On Mon, Jul 7, 2014 at 11:04 AM, Fisher Grubb <fisher.gr...@gmail.com> wrote: > Hi David, > > Yes, I have also seen small boards from Adafruit, though if I need an RTC > and it is possible to implement a fully functional one with the current > board by just adding a battery, I wouldn't add any extra components, > especially since the RTC in the CPU seems to have wake up events. > > I am doing a Masters project in control systems at university and am > hoping to either not have any external boards or at least very minimal. > > I will probably make my own board and won't add an RTC if I can implement > one with what is already on the BBB, especially as it may have more > features such as wake ups which a general I2C RTC won't have I don't think. > > Fisher > > > On Tuesday, 8 July 2014 01:54:22 UTC+10, David Anders wrote: >> >> or just purchase a RTC Cape >> >> http://elinux.org/CircuitCo:RTC_Cape for $29.99MSRP >> >> >> On Friday, February 1, 2013 1:51:51 AM UTC-6, Alexander Holler wrote: >>> >>> Hello, >>> >>> I've ust had a look at the specs for BeagleBone Black. >>> >>> As usual, my first question was: Does it support RTC operation? >>> >>> Having a first look at the schematics, it does not look like it is >>> possible to connect some coin battery or similiar to drive the processor >>> in RTC only mode. Am I right and this another non-RTC design which needs >>> an external RTC connected to I2C or similiar? >>> >>> Regards, >>> >>> Alexander >>> >>> -- > 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. > 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
