Thanks Steve! I have used external RTCs with BBB before. I was wondering if anything changed with the new Beaglebone AI. I can see some mention in the AM5729 datasheet, but not much on the BBAI System Reference documentation https://github.com/beagleboard/beaglebone-ai/wiki/System-Reference-Manual
-Chinmay On Friday, September 11, 2020 at 8:14:24 PM UTC+8 [email protected] wrote: > I just spent the last few weeks looking at the BBB RTC. > > If you want a battery backed RTC, you will need to add one. The Maxim > DS3231 is one example. Adafruit makes several breakout boards and modules > so you can pick your flavor of how you want to connect it. The clock will > be connected to the I2C - 2 bus. > > Then add this line to /boot/uEnv.txt: > > *dtb_overlay=/lib/firmware/BB-I2C2-RTC-DS3231.dtbo* > > Restart, and that’s it. Your BBB now has a battery backed RTC. If it’s > on a network and can reach an NTP server, it will set the RTC automagically. > > The BBB still does not have a good low power sleep mode. The RTC will not > fix that, but it’s not the fault of the RTC, which otherwise works quite > nicely with the Linux drivers. > > -Steve > > > > On Sep 10, 2020, at 10:37 PM, Chinmay Pendharkar <[email protected]> > wrote: > > Hello, > > Does the BeagleBone AI have an onboard RTC? If so is there any > documentation about it and how it can work? If there is a mechanism to add > battery/supercap to keep time. > > -Chinmay > > -- > 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/0cae3f1d-2f95-4128-8a81-440c770c05ben%40googlegroups.com > > <https://groups.google.com/d/msgid/beagleboard/0cae3f1d-2f95-4128-8a81-440c770c05ben%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- 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/670727d8-acff-4b25-9ee5-231c5f8e05ecn%40googlegroups.com.
