[Ovmsdev] Time variable

[Stephen Casner]

I see that this item was first listed on 10/12/2012, so it may well be
old enough that it was not implemented to handle the week-number
rollover.  I suggest that you contact FastTech to see if there is a
firmware update or a replacement.

                                                        -- Steve

On Thu, 7 Nov 2019, Tamás Kovács wrote:

> I use a universal gps connected to ovms, not the car own gps. (
> https://www.fasttech.com/products/1020200)
>
> Stephen Casner <casner at acm.org> ezt írta (időpont: 2019. nov. 7., Cs, 0:42):
>
> > Tamás,
> >
> > This looks like the GPS sensor did not handle the rollover of the
> > 10-bit week-number field in April, 2019.  So the timestamps are off by
> > 1024 * 7 * 24 * 60 * 60 seconds.  Here is the US government alert about
> > this problem:
> >
> >
> > https://www.us-cert.gov/sites/default/files/documents/Memorandum_on_GPS_2019.pdf
> >
> > This problem was recently discovered for the Garmin GPS 18x LVC
> > sensors in the Tesla Roadster 2.5 (but not in the earlier 1.5 version
> > like I have, which has the older GPS 18 LVC sensor):
> >
> >
> > https://teslamotorsclub.com/tmc/threads/caution-annual-service-car-power-down-gps-issue.163328/
> >
> > There is a firmware update to fix this for the GPS 18x LVC.  Perhaps
> > there is one for the GPS sensor in the Mitsubishi as well.
> >
> >                                                         -- Steve
> >
> > On Wed, 6 Nov 2019, Tamás Kovács wrote:
> >
> > > I have a problem with utc time, the time is correct but the date is not
> > > valid. I use 3.2.005-99-g88cfeef9 version with modification of Mitsubishi
> > > i-MiEV.
> > >
> > > OVMS# me li utc
> > > m.time.utc                               953756768Sec
> > > I (900675) housekeeping: 2000-03-22 21:27:06 CET (RAM: 8b=82812-86452
> > 32b=27308)
> > > I (981115) webserver: HTTP POST /api/execute
> > > I (981115) webcommand: HttpCommandStream[0x3fa32958]: 1984428 bytes
> > > free, executing: time
> > > OVMS# time
> > > Time Zone:  CET-1CEST,M3.5.0,M10.5.0/3
> > > UTC Time:   2000-03-22 20:28:27 UTC
> > > Local Time: 2000-03-22 21:28:27 CET
> > > Provider:   gsm-nmea
> > >
> > > PROVIDER             STRATUM  UPDATE TIME
> > > *gsm-nmea                  2       0 Wed Mar 22 20:28:27 2000
> > >
> > >
> > > --
> > > Üdvözlettel:
> > > Kovács Tamás_______________________________________________
> > OvmsDev mailing list
> > OvmsDev at lists.openvehicles.com
> > http://lists.openvehicles.com/mailman/listinfo/ovmsdev
> >
>
>
> --
> Üdvözlettel:
> Kovács Tamás
>