I would recommend you doing the CORRECT solution and installing an RTC on your Pi zero. Weewx relies HEAVILY on accurate time synchronisation between weather station and controlling PC - so ensuring your pi EITHER has an RTC onboard OR prevents weewx starting until time has been synchronised is ESSENTIAL for correct operation.
There are many many users of weewx with Davis stations, and many many of us with various models of RPi. There are also many instances of logger corruptions and other anomolies.. so fudging the driver for one situation may open a can of worms in another situation - you have been warned!!!!! On Tuesday, 28 May 2019 18:00:09 UTC+3, John wrote: > > so looking at the vantage driver it seems that if the weewx host > (raspberry pi zero without a RTC) has an incorrect time like after a > restart and syncs it's bad (early) time with the vantage console, then > records being added to the vantage console will have an earlier timestamp > than existing records. when weewx goes to read the records and finds a > "decreasing timestamp" it stops reading more records. manually clearing all > the records AND setting the correct time is a solution. > > I propose changing the vantage driver to avert setting the console time, > during a routine sync, earlier than the last record in the console. This > should prevent weewx from adjusting the console time until the weewx host > has had an opportunity to successfully acquire the time from an external > source (ntp server). I suppose setting the console to a future time could > cause a problem, preventing weewx from correcting the console time without > first clearing the last (errant) record. > > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/32f79d61-7d81-4bc0-adab-6d1ad66de99c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
