Why don't you make life easy and just add a $5-10 rtc module and be done with it? On Mon, Apr 10, 2023 at 6:08 AM Marko Mäkelä <marko.makela@xxxxxx> wrote: > > Some time ago, I created the wiki page > https://www.linuxtv.org/vdrwiki/index.php/Systemd that describes much of > my VDR installation. > > On my Raspberry Pi, there is no real-time-clock. My low-tech solution > for waking up VDR for recordings is that I set an alarm on my phone, to > remind me to turn on VDR when needed. Today, I refined that a little by > implementing an idle timeout shutdown when no further recording timers > exist, or when they are in the distant enough future. > > I learned that there is a portable Linux tool "rtcwake" that should > support whatever is needed by VDR. It is much simpler than the > "nvram-wakeup" that I used almost 20 years ago. On my Raspberry Pi, > basically any "rtcwake" commands will fail. That provided a good way of > testing the fallback mechanisms of my shutdown script. > > I think that it could be useful to include some Systemd integration > scripts in the VDR distribution. My systemd integration consists of 4 > parts that are documented in the > https://www.linuxtv.org/vdrwiki/index.php/Systemd wiki page: > > * /etc/systemd/system/vdr-keep-alive.sh to control system shutdown > * /var/lib/vdr/vdr-shutdown.sh to handle VDR shutdown (vdr -s) > * some configuration to have a VDR service in Systemd > * optional: additional configuration to have the video directory on USB > storage, to have VDR auto-start when the storage is plugged in. > > Because rtcwake does not work on my VDR system, it would be nice to get > some feedback from users of wake-on-timer capable systems. It is > possible that the "rtcwake -m disk -s $2" and "rtcwake -m mem -s $2" > require that "vdr-keep-alive.sh stop" be invoked first and > "vdr-keep-alive.sh start" be invoked once rtcwake successfully returns > (at the wake-up time). It is also possible that the VDR process would > need to be restarted. > > Best regards, > > Marko > > _______________________________________________ > vdr mailing list > vdr@xxxxxxxxxxx > https://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr _______________________________________________ vdr mailing list vdr@xxxxxxxxxxx https://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr
