smbus2 error

[Kevin Key]

Hi,

Suddenly I'm getting a smbus2 error. I've tried reinstalling smbus2 and Python3 numerous times. Not sure what the issue is now.

pi@RaspberryPi4:/etc/weewx $ tail -f /var/log/weewx.log

Oct 23 18:00:26 RaspberryPi4 weewx[2152] INFO user.sdr: sensor map is {'outTemp': 'temperature.02BC.AcuriteAtlasPacket', 'outHumidity': 'humidity.02BC.AcuriteAtlasPacket', 'windSpeed': 'wind_speed.02BC.AcuriteAtlasPacket', 'windDir': 'wind_dir.02BC.AcuriteAtlasPacket', 'UV': 'uv.02BC.AcuriteAtlasPacket', 'radiation': 'lux.02BC.AcuriteAtlasPacket', 'lux': 'lux.02BC.AcuriteAtlasPacket', 'Atlas_rain_total': 'rain_total.02BC.AcuriteAtlasPacket', 'strikes_total': 'strike_count.02BC.AcuriteAtlasPacket', 'strike_dist': 'strike_distance.02BC.AcuriteAtlasPacket', 'windBatteryStatus': 'battery.02BC.AcuriteAtlasPacket'}

Oct 23 18:00:26 RaspberryPi4 weewx[2152] INFO user.sdr: deltas is {'rain': 'Atlas_rain_total', 'lightningStrikes': 'strikes_total', 'lightningDistance': 'strike_dist'}

Oct 23 18:00:26 RaspberryPi4 weewx[2152] INFO user.sdr: startup process 'sudo /usr/local/bin/rtl_433 -M utc -F json'

Oct 23 18:00:26 RaspberryPi4 weewx[2152] DEBUG user.sdr: start async reader for stdout-thread

Oct 23 18:00:26 RaspberryPi4 weewx[2152] DEBUG user.sdr: start async reader for stderr-thread

Oct 23 18:00:26 RaspberryPi4 weewx[2152] DEBUG weewx.engine: Loading service weewx.engine.StdTimeSynch

Oct 23 18:00:26 RaspberryPi4 weewx[2152] DEBUG weewx.engine: Finished loading service weewx.engine.StdTimeSynch

Oct 23 18:00:26 RaspberryPi4 weewx[2152] DEBUG weewx.engine: Loading service user.bme280wx.Bme280wx

Oct 23 18:00:26 RaspberryPi4 weewx[2152] INFO user.sdr: shutdown process sudo /usr/local/bin/rtl_433 -M utc -F json

Oct 23 18:00:26 RaspberryPi4 weewx[2152] DEBUG user.sdr: waiting for stdout-thread

Oct 23 18:00:29 RaspberryPi4 weewx[2152] DEBUG user.sdr: waiting for stderr-thread

Oct 23 18:00:39 RaspberryPi4 weewx[2152] INFO user.sdr: timed out waiting for stderr-thread

Oct 23 18:00:39 RaspberryPi4 weewx[2152] DEBUG user.sdr: close stdout

Oct 23 18:00:39 RaspberryPi4 weewx[2152] DEBUG user.sdr: close stderr

Oct 23 18:00:42 RaspberryPi4 weewx[2152] DEBUG user.sdr: kill process

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__: Caught unrecoverable exception:

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****  No module named 'smbus2'

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****  Traceback (most recent call last):

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****    File "/usr/share/weewx/weewxd", line 151, in main

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****      engine = weewx.engine.StdEngine(config_dict)

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****    File "/usr/share/weewx/weewx/engine.py", line 93, in __init__

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****      self.loadServices(config_dict)

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****    File "/usr/share/weewx/weewx/engine.py", line 161, in loadServices

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****      obj = weeutil.weeutil.get_object(svc)(self, config_dict)

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****    File "/usr/share/weewx/weeutil/weeutil.py", line 1119, in get_object

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****      mod = __import__(module)

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****    File "/usr/share/weewx/user/bme280wx.py", line 5, in <module>

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****      import smbus2

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****  ModuleNotFoundError: No module named 'smbus2'

Oct 23 18:00:42 RaspberryPi4 weewx[2152] CRITICAL __main__:     ****  Exiting.

^X^C

[gjr80]

Sounds like a python 2/3 mismatch to me. What version of python does WeeWX run under? Check the WeeWX  log during startup, it may be different to the version invoked by the ‘python’ command from the bash prompt. How did you install smbus2? With pip or pip3? If WeeWX is running under python 3 and you installed smbus2 using pip and not pip3 WeeWX/python will not be able to find smbus2.

Gary

[Kevin Key]

Thanks Gary. I've decided to redo my Raspberry Pi 4 image from scratch. Since posting my earlier message, I started having other issues.