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clock update on raspberry

Added by Thierry GOLDER almost 7 years ago

Hi,
I'm using a stand alone raspberry pi (no internet connexion).
I would like to synchronize the rpi clock with data received from DVB-T protocol.
I know that the clock update check box do not work as RPI have no RTC.
Do you know a way to bypass this restriction?

Thanks for your help.

Regards
Thierry


Replies (5)

RE: clock update on raspberry - Added by Mark Clarkstone almost 7 years ago

Install fake-hwclock.

RE: clock update on raspberry - Added by Thierry GOLDER almost 7 years ago

thanks!
I will let you know with my success (or not!):)

RE: clock update on raspberry - Added by Thierry GOLDER almost 7 years ago

I just tried your solution.
Nothing happend...
how to link tvheadend and fake-hwclock?

regards,
Thierry

RE: clock update on raspberry - Added by Robert Cameron almost 7 years ago

Why not use fake-hwclock in combination with NTP? That's what I use on my SBCs without RTC:

$ echo "NTP=pool.ntp.org" | sudo tee -a /etc/systemd/timesyncd.conf
$ sudo timedatectl set NTP true
$ sudo systemctl enable fake-hwclock fake-hwclock-save.timer
$ sudo systemctl start fake-hwclock-save.timer

Edit: Nevermind, I just re-read the OP about lack of internet. Is there a util in the DVB utils that exposes the network, and perhaps a cron job that re-syncs the clock, that would work?

RE: clock update on raspberry - Added by Thierry GOLDER almost 7 years ago

May be successful using date -- set commande in tvheadend code?

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