Have you tried:
 wee_device --clear-memory

On Saturday, 30 March 2019 00:16:29 UTC+11, Jan Huijsmans wrote:
>
> Hi,
>
> I've been lurking a while here, as I'm trying to get my weather station 
> back up and running after the last upgrade (3.8.2 to 3.9.1). However, I'm 
> totally stuck and I just can't get Weewx to read the data from the weather 
> station and report it either to wunderground or store the data in my 
> database.
>
> Situation:
> - RPI 1 (Raspbian buster)
> - PCE FWS-20 weather station. (re-labeled WH1080)
> - Mysql database on RPI 3b (Raspbian Buster)
>
> All software is updated to latest level, debug = 1. The weewx 
> configuration I have worked perfectly since 2015, but failed on me 
> 07-01-2019 10:48:17 (last update on http://weer.koffie.nu/)
> Whatever I do, it just won't read the data from the weather station. Not 
> even when I delete all data/config and have it start from scratch. The 
> command wee_device --info gives all info the weather station has, but very 
> weird dates. Even resetting the weather station (leaving it powerless for 
> 48h) didn't help. Any ideas on how to get the setup working again?
>
> Thanks in advance for any help anybody can give.
>
> Jan H.
>
> Logfile after reboot system (no batteries in WH1080, so it got reset as 
> well)
> Mar 29 13:40:07 rivermoth weewx[539]: engine: Initializing weewx version 
> 3.9.1
> Mar 29 13:40:07 rivermoth weewx[539]: engine: Using Python 2.7.16rc1 (
> default, Feb 18 2019, 11:05:09) #012[GCC 8.2.0]
> Mar 29 13:40:07 rivermoth weewx[539]: engine: Platform Linux-4.14.98+-
> armv6l-with-debian-buster-sid
> Mar 29 13:40:07 rivermoth weewx[539]: engine: Locale is 'C.UTF-8'
> Mar 29 13:40:07 rivermoth weewx[539]: engine: pid file is /var/run/weewx.
> pid
> Mar 29 13:40:09 rivermoth weewx[614]: engine: Using configuration file /
> etc/weewx/weewx.conf
> Mar 29 13:40:09 rivermoth weewx[614]: engine: Loading station type 
> FineOffsetUSB (weewx.drivers.fousb)
> Mar 29 13:40:10 rivermoth weewx[614]: fousb: driver version is 1.9
> Mar 29 13:40:10 rivermoth weewx[614]: fousb: polling mode is PERIODIC
> Mar 29 13:40:10 rivermoth weewx[614]: fousb: polling interval is 300
> Mar 29 13:40:15 rivermoth weewx[614]: fousb: found station on USB bus= 
> device=
> Mar 29 13:40:15 rivermoth weewx[614]: engine: StdConvert target unit is 
> 0x10
> Mar 29 13:40:16 rivermoth weewx[614]: wxcalculate: The following values 
> will be calculated: barometer=prefer_hardware, windchill=prefer_hardware, 
> dewpoint=prefer_hardware, appTemp=prefer_hardware, rainRate=
> prefer_hardware, windrun=prefer_hardware, heatindex=prefer_hardware, 
> maxSolarRad=prefer_hardware, humidex=prefer_hardware, pressure=
> prefer_hardware, inDewpoint=prefer_hardware, ET=prefer_hardware, altimeter
> =prefer_hardware, cloudbase=prefer_hardware
> Mar 29 13:40:16 rivermoth weewx[614]: wxcalculate: The following 
> algorithms will be used for calculations: altimeter=aaNOAA, maxSolarRad=RS
> Mar 29 13:40:16 rivermoth weewx[614]: engine: Archive will use data 
> binding wx_binding
> Mar 29 13:40:16 rivermoth weewx[614]: engine: Record generation will be 
> attempted in 'hardware'
> Mar 29 13:40:17 rivermoth weewx[614]: fousb: unstable read: blocks differ 
> for ptr 0x000080
> Mar 29 13:40:17 rivermoth weewx[614]: fousb: unstable read: blocks differ 
> for ptr 0x0000c0
> Mar 29 13:40:17 rivermoth weewx[614]: fousb: unstable read: blocks differ 
> for ptr 0x0000c0
> Mar 29 13:40:17 rivermoth weewx[614]: engine: Using archive interval of 
> 300 seconds (specified by hardware)
> Mar 29 13:40:23 rivermoth weewx[614]: engine: Using binding 'wx_binding' 
> to database 'weewx'
> Mar 29 13:40:23 rivermoth weewx[614]: manager: Starting backfill of daily 
> summaries
> Mar 29 13:40:24 rivermoth weewx[614]: restx: StationRegistry: Station 
> will be registered.
> Mar 29 13:40:24 rivermoth weewx[614]: restx: Wunderground-RF: Data for 
> station IFLEVOLA41 will be posted
> Mar 29 13:40:24 rivermoth weewx[614]: restx: PWSweather: Posting not 
> enabled.
> Mar 29 13:40:24 rivermoth weewx[614]: restx: CWOP: Posting not enabled.
> Mar 29 13:40:25 rivermoth weewx[614]: restx: WOW: Posting not enabled.
> Mar 29 13:40:25 rivermoth weewx[614]: restx: AWEKAS: Data will be 
> uploaded for user [email protected]
> Mar 29 13:40:25 rivermoth weewx[614]: engine: Starting up weewx version 
> 3.9.1
> Mar 29 13:40:26 rivermoth weewx[614]: fousb: unstable read: blocks differ 
> for ptr 0x000080
> Mar 29 13:40:26 rivermoth weewx[614]: fousb: unstable read: blocks differ 
> for ptr 0x000080
> Mar 29 13:40:26 rivermoth weewx[614]: fousb: unstable read: blocks differ 
> for ptr 0x000080
> Mar 29 13:40:27 rivermoth weewx[614]: fousb: synchronising to the weather 
> station (quality=1)
> Mar 29 13:40:46 rivermoth weewx[614]: fousb: unstable read: blocks differ 
> for ptr 0x000100
> Mar 29 13:41:09 rivermoth weewx[614]: fousb: unstable read: blocks differ 
> for ptr 0x000100
>
> lsusb
> Bus 001 Device 004: ID 1941:8021 Dream Link WH1080 Weather Station / USB 
> Missile Launcher
>
> weewx.conf (station section)
>
> #   This section is for information about the station.
>
>
> [Station]
>
>
>     # Description of the station location
>     location = "Lelystad, The Netherlands"
>
>
>     # Latitude and longitude in decimal degrees
>     latitude = 52.514576
>     longitude = 5.502846
>
>
>     # Altitude of the station, with unit it is in. This is downloaded from
>     # from the station if the hardware supports it.
>     altitude = -4, meter    # Choose 'foot' or 'meter' for unit
>
>
>     # Set to type of station hardware. There must be a corresponding 
> stanza
>     # in this file with a 'driver' parameter indicating the driver to be 
> used.
>     station_type = FineOffsetUSB
>
>
>     # If you have a website, you may specify an URL
>     #station_url = http://www.example.com
>
>
>     # The start of the rain year (1=January; 10=October, etc.). This is
>     # downloaded from the station if the hardware supports it.
>     rain_year_start = 1
>
>
>     # Start of week (0=Monday, 6=Sunday)
>     week_start = 0
>     station_url = http://weer.koffie.nu/
>
>
> [FineOffsetUSB]
>     # This section is for the Fine Offset series of weather stations.
>
>
>     # The station model, e.g., WH1080, WS1090, WS2080, WH3081
>     #model = WH1080
>     model = PCE FWS-20
>
>
>     # The polling mode can be PERIODIC or ADAPTIVE
>     polling_mode = PERIODIC
>
>
>     # How often to poll the station for data, in seconds
>     polling_interval = 300
>
>
>     # The pressure calibration offset, in hPa (millibars)
>     pressure_offset = 0
>
>
>     # The driver to use:
>     driver = weewx.drivers.fousb
>
> wee_device --info
>
> Using configuration file /etc/weewx/weewx.conf
> Using FineOffsetUSB driver version 1.9 (weewx.drivers.fousb)
> Querying the station...
> Fine Offset station settings:
>                     local time: 2019.03.29 14:11:08 CET
>                   polling mode: PERIODIC
>
>
>                   abs_pressure: 1028.3
>                    current_pos: 256
>                   data_changed: 170
>                     data_count: 1
>                      date_time: 2010-01-01 12:00
>                  hum_in_offset: 18
>                 hum_out_offset: 257
>                             id: 531
>                  lux_wm2_coeff: 0
>                        magic_1: 0x55
>                        magic_2: 0xaa
>                          model: 4875
>                      rain_coef: 732
>                    read_period: 5
>                   rel_pressure: 1013.2
>                 temp_in_offset: 4096
>                temp_out_offset: 0
>                       timezone: 0
>                     unknown_01: 0
>                     unknown_18: 0
>                        version: 2
>                      wind_coef: 1452
>                      wind_mult: 0
>
>
>          max.abs_pressure.date: 2165-157-165 165:165
>           max.abs_pressure.val: 1034.6
>              max.dewpoint.date: 2157-165-125 157:155
>               max.dewpoint.val: 5.9
>                max.hum_in.date: 2161-165-163 165:165
>                 max.hum_in.val: 61
>               max.hum_out.date: 2165-105-165 77:165
>                max.hum_out.val: 86
>            max.illuminance.val: 0
>              max.rain.day.date: 2165-145-165 165:164
>               max.rain.day.val: 14514.9
>             max.rain.hour.date: 2125-83-165 165:85
>              max.rain.hour.val: 19649.7
>            max.rain.month.date: 2145-165-157 165:163
>             max.rain.month.val: 14745.3
>            max.rain.total.date: 2165-165-163 165:165
>             max.rain.total.val: None
>             max.rain.week.date: 2165-83-165 165:165
>              max.rain.week.val: 19353.3
>          max.rel_pressure.date: 2161-157-165 165:165
>           max.rel_pressure.val: 1013.3
>               max.temp_in.date: 2161-117-165 121:45
>                max.temp_in.val: 21.3
>              max.temp_out.date: 2161-154-165 165:165
>               max.temp_out.val: 19.8
>                     max.uv.val: 0
>              max.wind_ave.date: 2125-155-165 165:155
>               max.wind_ave.val: 2.7
>             max.wind_gust.date: 2165-165-157 163:165
>              max.wind_gust.val: None
>             max.windchill.date: 2085-164-165 165:165
>              max.windchill.val: 19.8
>          min.abs_pressure.date: 2162-165-165 165:163
>           min.abs_pressure.val: 997.3
>              min.dewpoint.date: 2165-125-165 165:125
>               min.dewpoint.val: -8.7
>                min.hum_in.date: 2165-141-161 165:165
>                 min.hum_in.val: 51
>               min.hum_out.date: 2157-115-165 165:165
>                min.hum_out.val: 21
>          min.rel_pressure.date: 2165-157-165 165:165
>           min.rel_pressure.val: 1013.2
>               min.temp_in.date: 2165-125-154 157:157
>                min.temp_in.val: 18.1
>              min.temp_out.date: 2165-125-157 165:165
>               min.temp_out.val: -6.1
>             min.windchill.date: 2141-125-125 155:165
>              min.windchill.val: -6.1
>
>
>       settings_1.pressure_inHg: False
>        settings_1.pressure_hPa: False
>          settings_1.temp_out_F: False
>       settings_1.pressure_mmHg: False
>             settings_1.rain_in: False
>           settings_1.temp_in_F: False
>                settings_1.bit4: False
>                settings_1.bit3: False
>            settings_2.wind_bft: False
>            settings_2.wind_mps: False
>           settings_2.wind_knot: False
>                settings_2.bit7: False
>                settings_2.bit6: False
>                settings_2.bit5: False
>           settings_2.wind_kmph: True
>            settings_2.wind_mph: False
>
>
>            display_1.wind_gust: False
>        display_1.show_day_name: False
>            display_1.show_year: True
>        display_1.time_scale_24: False
>         display_1.pressure_rel: False
>           display_1.alarm_time: False
>             display_1.date_mdy: False
>           display_1.clock_12hr: False
>        display_2.temp_out_temp: True
>            display_2.rain_hour: True
>           display_2.rain_month: False
>            display_2.rain_week: False
>       display_2.temp_out_chill: False
>             display_2.rain_day: False
>         display_2.temp_out_dew: False
>           display_2.rain_total: False
>       display_3.illuminance_fc: False
>                 display_3.bit7: False
>                 display_3.bit6: False
>                 display_3.bit5: False
>                 display_3.bit4: False
>                 display_3.bit3: False
>                 display_3.bit2: False
>                 display_3.bit1: False
>
>
>          alarm.abs_pressure.hi: 1040.0
>          alarm.abs_pressure.lo: 960.0
>              alarm.dewpoint.hi: 10.0
>              alarm.dewpoint.lo: -10.0
>                alarm.hum_in.hi: 65
>                alarm.hum_in.lo: 35
>               alarm.hum_out.hi: 70
>               alarm.hum_out.lo: 45
>              alarm.illuminance: 0
>                 alarm.rain.day: 150.0
>                alarm.rain.hour: 3.0
>          alarm.rel_pressure.hi: 1040.0
>          alarm.rel_pressure.lo: 960.0
>               alarm.temp_in.hi: 20.0
>               alarm.temp_in.lo: 0
>              alarm.temp_out.hi: 30.0
>              alarm.temp_out.lo: -10.0
>                     alarm.time: 12:00
>                       alarm.uv: 0
>             alarm.wind_ave.bft: 0
>              alarm.wind_ave.ms: 18.0
>                 alarm.wind_dir: 0
>            alarm.wind_gust.bft: 0
>             alarm.wind_gust.ms: 10.4
>             alarm.windchill.hi: 20.0
>             alarm.windchill.lo: 0
>             alarm_1.hum_out_hi: False
>              alarm_1.hum_in_lo: False
>              alarm_1.hum_in_hi: False
>             alarm_1.hum_out_lo: False
>                   alarm_1.time: False
>                   alarm_1.bit3: False
>               alarm_1.wind_dir: False
>                   alarm_1.bit0: False
>               alarm_2.wind_ave: False
>              alarm_2.wind_gust: False
>              alarm_2.rain_hour: False
>        alarm_2.pressure_rel_lo: False
>        alarm_2.pressure_abs_hi: False
>               alarm_2.rain_day: False
>        alarm_2.pressure_rel_hi: False
>        alarm_2.pressure_abs_lo: False
>            alarm_3.temp_out_hi: False
>          alarm_3.wind_chill_lo: False
>           alarm_3.dew_point_lo: False
>             alarm_3.temp_in_lo: False
>          alarm_3.wind_chill_hi: False
>             alarm_3.temp_in_hi: False
>            alarm_3.temp_out_lo: False
>           alarm_3.dew_point_hi: False
>
>
>
>

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