There's also a software package known as fake hwclock. It's not a real time clock, and perhaps it'll even lose time over long periods. But it seems to do a reasonable job of keeping time on a system close.
We actually use DS3232 on those devices that *need* to keep accurate time. On Thu, Dec 15, 2016 at 10:15 AM, Robert Nelson <[email protected]> wrote: > On Thu, Dec 15, 2016 at 10:57 AM, Chris Green <[email protected]> wrote: > > Robert Nelson <[email protected]> wrote: > >> On Thu, Dec 15, 2016 at 10:14 AM, Chris Green <[email protected]> wrote: > >> > I run a headless BBB on my boat. I need it to have the right time so > >> > that information it sends is correctly time stamped. > >> > > >> > How can I get it to power up with the right time and date? I have > >> > installed ntp/ntpd to keep the time correct once up and running but it > >> > doesn't initialise the time and date. What's the way to do this? > >> > >> Debian Wheezy or Jessie? > >> > > It's Wheezy. > > > > > >> In wheezy, setup a job to run at startup, check for connection and > >> just run "ntpdate pool.ntp.org" > >> > > OK, thanks, that seems straightforward. > > > > > >> In Jessie, there's a systemd > >> > >> sudo systemctl enable systemd-timesyncd.service || true > >> > >> both cases rely on a active internet connection... > >> > > Of course, yes. If the internet isn't reliable is it worth running > > 'ntpdate' at intervals using cron so that if there isn't a connection > > at startup it will get set when the internet does appear? > > In that case, something like this would just work better: > > https://www.sparkfun.com/products/12708 > > You can find them cheaper elsewhere.. > > 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/CAOCHtYgeFJMvE6EZkMVCx%2Bw8ZrZ9G1%3DOimRJnuw- > Qcy5YE8DYQ%40mail.gmail.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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORpX9pO70Xy0LuW682xiX4vudNM8Wxqeb6UN%3DgEdH760pw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
