Lars Schotte [l...@gustik.eu] wrote: > > Now, I do not like all this, that's why I ordered > vk-172 gmouse g-mouse USB GPS/GLONASS USB over amazon > and hope I can use that in combination with some Raspberry PI as NTPd > clocksource, as I saw some ppl doing. > > But that is only one clocksource, multiple would be preferrable. > I have some DVB-T adapter lying around that can also be used as a > clocksource, since those old DVB-T adapters are not good for TV anymore > since ppl are sending DVB-T2, there is still for the forseeable > future enough frequencies that will be still old DVB-T and those have > time signal in them that can be used SOMEHOW. >
In OpenBSD, you would write a kernel USB driver that sets up the DVB-T adapter to receive the appropriate signal and decode it. But the DVB decoding might be too involved for what should be a small kernel driver. Maybe you can hack the dvbdate utility into a source of NMEA 0183 data to be opened as a socket from ntpd. Chris
