Most likely you need to add the user "weewx" to the "dialout" group. See the wiki section *add the weewx user to group defined on a device <https://github.com/weewx/weewx/wiki/Understanding-permissions#example-add-the-weewx-user-to-group-defined-on-a-device>.*
On Mon, Mar 11, 2024 at 4:13 PM Gord Snarr (GSFarm) <gsfa...@gmail.com> wrote: > New install on a fresh RPI4B, new card etc. > > Installation seems to go fine, but there seems to be a permissions issue > with the USB0 port I am using for the USB -> serial adapter to the serial > console on the Davis VP. > > Log as follows: > > × weewx.service - WeeWX > Loaded: loaded (/lib/systemd/system/weewx.service; enabled; preset: > enabled) > Active: failed (Result: exit-code) since Mon 2024-03-11 17:10:35 CDT; > 38min ago > Duration: 342ms > Docs: https://weewx.com/docs > Process: 2511 ExecStart=weewxd /etc/weewx/weewx.conf (code=exited, > status=4) > Main PID: 2511 (code=exited, status=4) > CPU: 343ms > > Mar 11 17:10:35 raspberrypi weewxd[2511]: CRITICAL weewx.engine: **** > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > Mar 11 17:10:35 raspberrypi weewxd[2511]: CRITICAL weewx.engine: **** > File "/usr/lib/python3/dist-packages/serial/serialutil.py", line 244, in > __init__ > Mar 11 17:10:35 raspberrypi weewxd[2511]: CRITICAL weewx.engine: **** > self.open() > Mar 11 17:10:35 raspberrypi weewxd[2511]: CRITICAL weewx.engine: **** > File "/usr/lib/python3/dist-packages/serial/serialposix.py", line 325, > in open > Mar 11 17:10:35 raspberrypi weewxd[2511]: CRITICAL weewx.engine: **** > raise SerialException(msg.errno, "could not open port {}: > {}".format(self._port, msg)) > Mar 11 17:10:35 raspberrypi weewxd[2511]: CRITICAL weewx.engine: **** > serial.serialutil.SerialException: [Errno 13] could not open port > /dev/ttyUSB0: [Errno 13] Permission denied: '/dev/ttyUSB0' > Mar 11 17:10:35 raspberrypi weewxd[2511]: CRITICAL __main__: Unable to > load driver: [Errno 13] could not open port /dev/ttyUSB0: [Errno 13] > Permission denied: '/dev/ttyUSB0' > Mar 11 17:10:35 raspberrypi weewxd[2511]: CRITICAL __main__: **** > Exiting... > Mar 11 17:10:35 raspberrypi systemd[1]: weewx.service: Main process > exited, code=exited, status=4/NOPERMISSION > Mar 11 17:10:35 raspberrypi systemd[1]: weewx.service: Failed with result > 'exit-code'. > ~ > > VER: > Linux raspberrypi 6.6.20+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.6.20-1+rpt1 > (2024-03-07) aarch64 > > HRDWR > RPI-4B > Davis Vantage Pro (not the II). > Weewx version (what ever downloaded today using "apt install weewx"). > Think it's 5.0.2. > > What should the permissions be set to the port, or user added? Is it > weewxd, root, pi? > SHould I change the user in the weewx.conf, or change the chmod the port? > > Maybe I should have started with an older weewx version and upgraded? This > may have been sorted out already previously. > Thankx in advance, > -G. > > -- > 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 weewx-user+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/da82a39f-9cad-4b52-941f-b6529efb7c05n%40googlegroups.com > <https://groups.google.com/d/msgid/weewx-user/da82a39f-9cad-4b52-941f-b6529efb7c05n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/CAPq0zECgoSW2MGbtBtuXfbP61S%2B%2BoQMLv_-R9iY525X6vySbeg%40mail.gmail.com.
