RTC with Venus OS on Raspberry

Hi, can anybody help me to integrate the RTC module DS3231 on Raspberry VenusOS.

i found an how to, but for Raspbian. this is not the same.

so is there any documentation how to add a RTC module to VenusOS?

thanks

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benc-ipind commented · Jul 23, 2022 at 04:27 AM

See my post from today:

https://community.victronenergy.com/questions/145288/gaps-in-logging-on-rpi-venus-os.html?childToView=146159#comment-146159

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kevgermany ♦♦ commented · Jul 23, 2022 at 07:44 AM

Moved to modifications space

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johnny-brusevold commented · Jul 23, 2022 at 12:23 PM

I am using rtc ds1307 on a pi with venus-os 2.90-14 which is never online.

Downloaded https://github.com/raspberrypi/firmware/blob/master/boot/overlays/i2c-rtc.dtbo to /u-boot/overlays/

Added to config.txt

dtparam=i2c_arm=on
dtoverlay=i2c-rtc,ds1307

Haven't done anything else and everything works perfectly, with hw clock sync on reboot.

Since my pi is never online due to no coverage, I have set ntp time sync to manual by adding in /data/var/lib/connman/settings

[global]

TimeUpdates = manual

EDIT (added)

date  (show system time)
date -s '2022-07-23 14:44:11' (set system date/time manually)
hwclock -r  (read time from hwclock)
hwclock -s  (write hwclock time to system)
hwclock -w  (write system time to hwclock)

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