The error is Aug 02 14:51:34 ThompsonFarms weewxd[663]: ERROR weewx.drivers.vantage: LOOP batch try #1; error: Expected to read 99 chars; got 0 instead Tom, I will sort through the corrupt memory in Wiki.
On Sunday, August 2, 2026 at 5:40:49 PM UTC-5 Tom Keffer wrote: > These are classical symptoms of corrupt memory in the logger. The giveaway > is the log entry that says there are 9 pages to be retrieved, but the first > page already shows descending timestamps. > > To fix, see the section *Corrupt memory > <https://github.com/weewx/weewx/wiki/Troubleshooting-the-Davis-Vantage-station#corrupt-station-memory>* > in > the wiki. > > On Sun, Aug 2, 2026 at 1:21 PM 'Andy Thompson' via weewx-user < > [email protected]> wrote: > >> I am currently getting a vantage driver error in Weewx that is stopping >> the show. I have a Vantage Pro 2, running a rasberri pi 3. Brand new >> install of Weewx. >> andyt1424@ThompsonFarms:~ $ cd /etc/weewx >> andyt1424@ThompsonFarms:/etc/weewx $ sudo nano weewx.conf >> andyt1424@ThompsonFarms:/etc/weewx $ sudo systemctl stop weewx >> andyt1424@ThompsonFarms:/etc/weewx $ sudo journalctl -u weewx -f >> Aug 02 14:51:20 ThompsonFarms weewxd[663]: INFO weewx.manager: Daily >> summaries up to date >> Aug 02 14:51:22 ThompsonFarms weewxd[663]: INFO weewx.engine: Starting >> main packet loop. >> Aug 02 14:51:34 ThompsonFarms weewxd[663]: ERROR weewx.drivers.vantage: >> LOOP batch try #1; error: Expected to read 99 chars; got 0 instead >> Aug 02 14:58:54 ThompsonFarms systemd[1]: Stopping weewx.service - >> WeeWX... >> Aug 02 14:58:54 ThompsonFarms weewxd[663]: INFO __main__: Received signal >> TERM (15). >> Aug 02 14:58:54 ThompsonFarms weewxd[663]: INFO weewx.engine: Main loop >> exiting. Shutting engine down. >> Aug 02 14:58:55 ThompsonFarms weewxd[663]: INFO __main__: Terminating >> weewx version 5.4.0 >> Aug 02 14:58:55 ThompsonFarms systemd[1]: weewx.service: Deactivated >> successfully. >> Aug 02 14:58:55 ThompsonFarms systemd[1]: Stopped weewx.service - WeeWX. >> Aug 02 14:58:55 ThompsonFarms systemd[1]: weewx.service: Consumed 4.827s >> CPU time. >> Aug 02 15:01:40 ThompsonFarms systemd[1]: Started weewx.service - WeeWX. >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Initializing >> weewxd version 5.4.0 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Command line: >> /usr/share/weewx/weewxd.py /etc/weewx/weewx.conf >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Using Python: >> 3.11.2 (main, May 12 2026, 05:17:27) [GCC 12.2.0] >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Located at: >> /usr/bin/python3 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Platform: >> Linux-6.12.96+rpt-rpi-v7-armv7l-with-glibc2.36 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Locale: >> 'en_US' >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Entry path: >> /usr/share/weewx/weewxd.py >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: WEEWX_ROOT: >> /etc/weewx >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Config file: >> /etc/weewx/weewx.conf >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: User module: >> /etc/weewx/bin/user >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Debug: 1 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: User: >> weewx >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Group: >> weewx >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO __main__: Groups: >> dialout weewx >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG __main__: loop_on_init: >> False >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG __main__: Initializing >> engine >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO weewx.engine: Loading >> station type Vantage (weewx.drivers.vantage) >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Driver version is 3.6.3 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Option loop_request=1 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Opened up serial port /dev/ttyUSB0; baud 19200; timeout 4.00 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Hardware type is 16 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> ISS ID is 1 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Hardware name: Vantage Pro2 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.engine.StdTimeSynch >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.engine.StdTimeSynch >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.engine.StdConvert >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO weewx.engine: StdConvert >> target unit is 0x1 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.engine.StdConvert >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.engine.StdCalibrate >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.engine.StdCalibrate >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.engine.StdQC >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.engine.StdQC >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.wxservices.StdWXCalculate >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO weewx.wxservices: >> StdWXCalculate will use data binding wx_binding >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.manager: Daily >> summary version is 4.0 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.wxservices.StdWXCalculate >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.wxxtypes.StdWXXTypes >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.wxxtypes.StdWXXTypes >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.wxxtypes.StdPressureCooker >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.wxxtypes.StdPressureCooker >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.wxxtypes.StdRainRater >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.wxxtypes.StdRainRater >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.wxxtypes.StdDelta >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.wxxtypes.StdDelta >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.engine.StdArchive >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO weewx.engine: Archive >> will use data binding wx_binding >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO weewx.engine: Record >> generation will be attempted in 'hardware' >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO weewx.engine: The >> archive interval in the configuration file (300) does not match the station >> hardware interval (1800). >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: INFO weewx.engine: Using >> archive interval of 1800 seconds (specified by hardware) >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Use LOOP >> data in hi/low calculations: 1 >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.engine.StdArchive >> Aug 02 15:01:41 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.restx.StdStationRegistry >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.restx: >> StationRegistry: Registration not requested. >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.restx.StdStationRegistry >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.restx.StdWunderground >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.restx: WU >> essentials: {} >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.restx: >> Wunderground-PWS: Data for station KMNHANSK2 will be posted >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.restx.StdWunderground >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.restx.StdPWSweather >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.restx: PWSWeather: >> Data for station KMNHANSK2 will be posted >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.restx.StdPWSweather >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.restx.StdCWOP >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.restx: CWOP: Data >> for station DW7572 will be posted >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.restx.StdCWOP >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.restx.StdWOW >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.restx: WOW: >> Posting not enabled. >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.restx.StdWOW >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.restx.StdWOWBE >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.restx: WOW-BE: >> Posting not enabled. >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.restx.StdWOWBE >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.restx.StdAWEKAS >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.restx: AWEKAS: >> Posting not enabled. >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.restx.StdAWEKAS >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.engine.StdPrint >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.engine.StdPrint >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Loading >> service weewx.engine.StdReport >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.engine: 'pyephem' >> detected, extended almanac data is available >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.engine: Finished >> loading service weewx.engine.StdReport >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO __main__: Starting up >> weewx version 5.4.0 >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.manager: Daily >> summary version is 4.0 >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.manager: Daily >> summary version is 4.0 >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.manager: Daily >> summary version is 4.0 >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> Aug 02 15:01:42 ThompsonFarms weewxd[1952]: INFO weewx.engine: Clock >> error is -10.74 seconds (positive is fast) >> Aug 02 15:01:43 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> Aug 02 15:01:43 ThompsonFarms weewxd[1952]: INFO weewx.drivers.vantage: >> Clock set to 2026-08-02 15:01:44 CDT (1785700904) >> Aug 02 15:01:43 ThompsonFarms weewxd[1952]: INFO weewx.engine: Using >> binding 'wx_binding' to database 'weewx.sdb' >> Aug 02 15:01:43 ThompsonFarms weewxd[1952]: INFO weewx.manager: Starting >> backfill of daily summaries >> Aug 02 15:01:43 ThompsonFarms weewxd[1952]: INFO weewx.manager: Daily >> summaries up to date >> Aug 02 15:01:43 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Getting archive packets since 2026-08-01 18:30:00 CDT (1785627000) >> Aug 02 15:01:44 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> Aug 02 15:01:44 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Retrieving 9 page(s); starting index= 3 >> Aug 02 15:01:44 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> DMPAFT complete: page timestamp 2024-09-29 18:30:00 CDT (1727652600) less >> than final timestamp 2026-08-01 18:30:00 CDT (1785627000) >> Aug 02 15:01:44 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Catch up complete. >> Aug 02 15:01:44 ThompsonFarms weewxd[1952]: INFO weewx.engine: Starting >> main packet loop. >> Aug 02 15:01:45 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> Aug 02 15:01:45 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Requesting 200 LOOP packets. >> Aug 02 15:01:45 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> Aug 02 15:01:49 ThompsonFarms weewxd[1952]: ERROR weewx.drivers.vantage: >> LOOP batch try #1; error: Expected to read 99 chars; got 0 instead >> Aug 02 15:01:50 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> Aug 02 15:08:28 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Requesting 200 LOOP packets. >> Aug 02 15:08:28 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> Aug 02 15:15:06 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Requesting 200 LOOP packets. >> Aug 02 15:15:06 ThompsonFarms weewxd[1952]: DEBUG weewx.drivers.vantage: >> Successfully woke up Vantage console >> >> -- >> 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 [email protected]. >> To view this discussion visit >> https://groups.google.com/d/msgid/weewx-user/c52a9142-11ca-4b56-8c27-2c3ade448481n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/weewx-user/c52a9142-11ca-4b56-8c27-2c3ade448481n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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