Mario
I owe you a beer (or two).
/dev/ttyUSB0 is the USB-to-serial adapter.
Followed your instructions to the letter and I now have a fully functioning
WeeWX v5.0.2.
Many, many thanks.
Regards
Dave
On Thursday 15 February 2024 at 22:03:02 UTC matthew wall wrote:
> On Thursday, February 15, 2024 at 4:43:37 PM UTC-5 dave.m...@gmail.com
> wrote:
>
> Feb 15 21:37:15 weewx weewxd[103822]: CRITICAL weewx.engine: ****
> File "/usr/lib/python3/dist-packages/serial/serialposix.py", line 325, in
> open
> Feb 15 21:37:15 weewx weewxd[103822]: CRITICAL weewx.engine: ****
> raise SerialException(msg.errno, "could not open port {}:
> {}".format(self._port, msg))
> Feb 15 21:37:15 weewx weewxd[103822]: CRITICAL weewx.engine: ****
> serial.serialutil.SerialException: [Errno 13] could not open port
> /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0'
> Feb 15 21:37:15 weewx weewxd[103822]: CRITICAL __main__: Unable to load
> driver: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] Permission
> denied: '/dev/ttyUSB0'
> Feb 15 21:37:15 weewx weewxd[103822]: CRITICAL __main__: ****
> Exiting...
> Feb 15 21:37:15 weewx systemd[1]: weewx.service: Main process exited,
> code=exited, status=4/NOPERMISSION
> Feb 15 21:37:15 weewx systemd[1]: weewx.service: Failed with result
> 'exit-code'.
>
> Now unable to restart WeeWX and have rolled back to the previous version.
>
> Any idea what the issue is?
>
>
> the error indicates that the weewxd process does not have permission to
> read/write the USB-to-serial device. make sure that the user running
> weewxd has read/write permission to /dev/ttyUSB0 (which is probably a
> USB-to-serial adapter).
>
> for example, if user 'weewx' is running weewxd, then put the weewx user
> into the dialout group then restart weewxd:
>
> sudo usermod -aG dialout weewx
> sudo systemctl restart weewx
>
> see the section about reading/writing to devices in the wiki article "what
> you need to know about permissions":
>
>
> https://github.com/weewx/weewx/wiki/Understanding-permissions#readingwriting-data-to-a-device
>
> please let us know what works for you. there are *so* many variations
> when it comes to permissions, and many different ways to make things work.
> we're still trying to simplify the documentation to make permissions easier
> to understand and deal with.
>
> m
>
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