Even tried a new port # on the PI computer.  It sees the davis but hates it


Feb  5 05:48:15 raspberrypi weewxd[4416]: CRITICAL __main__:     **** 
 Exiting...
Feb  5 05:48:15 raspberrypi systemd[1]: weewx.service: Main process exited, 
code=exited, status=4/NOPERMISSION
Feb  5 05:48:15 raspberrypi systemd[1]: weewx.service: Failed with result 
'exit-code'.
Feb  5 05:48:47 raspberrypi kernel: [206364.060056] usb 1-1.3: USB 
disconnect, device number 32
Feb  5 05:48:47 raspberrypi kernel: [206364.060992] cp210x ttyUSB0: cp210x 
converter now disconnected from ttyUSB0
Feb  5 05:48:47 raspberrypi kernel: [206364.061124] cp210x 1-1.3:1.0: 
device disconnected
Feb  5 05:48:51 raspberrypi kernel: [206368.742960] usb 1-1.2: new 
full-speed USB device number 33 using xhci_hcd
Feb  5 05:48:52 raspberrypi kernel: [206368.823208] usb 1-1.2: device 
descriptor read/64, error -32
Feb  5 05:48:52 raspberrypi kernel: [206369.011191] usb 1-1.2: device 
descriptor read/64, error -32
Feb  5 05:48:52 raspberrypi kernel: [206369.198959] usb 1-1.2: new 
full-speed USB device number 34 using xhci_hcd
Feb  5 05:48:52 raspberrypi kernel: [206369.279207] usb 1-1.2: device 
descriptor read/64, error -32
Feb  5 05:48:52 raspberrypi kernel: [206369.467193] usb 1-1.2: device 
descriptor read/64, error -32
Feb  5 05:48:52 raspberrypi kernel: [206369.575606] usb 1-1-port2: attempt 
power cycle
Feb  5 05:48:53 raspberrypi kernel: [206370.178963] usb 1-1.2: new 
full-speed USB device number 35 using xhci_hcd
Feb  5 05:48:53 raspberrypi kernel: [206370.179245] usb 1-1.2: Device not 
responding to setup address.
Feb  5 05:48:53 raspberrypi kernel: [206370.387214] usb 1-1.2: Device not 
responding to setup address.
Feb  5 05:48:53 raspberrypi kernel: [206370.594992] usb 1-1.2: device not 
accepting address 35, error -71
Feb  5 05:49:14 raspberrypi kernel: [206391.719029] usb 1-1.2: new 
full-speed USB device number 37 using xhci_hcd
Feb  5 05:49:15 raspberrypi kernel: [206391.824466] usb 1-1.2: New USB 
device found, idVendor=10c4, idProduct=ea60, bcdDevice= 1.00
Feb  5 05:49:15 raspberrypi kernel: [206391.824500] usb 1-1.2: New USB 
device strings: Mfr=1, Product=2, SerialNumber=3
Feb  5 05:49:15 raspberrypi kernel: [206391.824518] usb 1-1.2: Product: 
CP2102 USB to UART Bridge Controller
Feb  5 05:49:15 raspberrypi kernel: [206391.824532] usb 1-1.2: 
Manufacturer: Silicon Labs
Feb  5 05:49:15 raspberrypi kernel: [206391.824545] usb 1-1.2: 
SerialNumber: 0001
Feb  5 05:49:15 raspberrypi kernel: [206391.830290] cp210x 1-1.2:1.0: 
cp210x converter detected
Feb  5 05:49:15 raspberrypi kernel: [206391.836351] usb 1-1.2: cp210x 
converter now attached to ttyUSB0
Feb  5 05:49:15 raspberrypi mtp-probe: checking bus 1, device 37: 
"/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2"
Feb  5 05:49:15 raspberrypi mtp-probe: bus: 1, device: 37 was not an MTP 
device
Feb  5 05:49:15 raspberrypi mtp-probe: checking bus 1, device 37: 
"/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2"
Feb  5 05:49:15 raspberrypi mtp-probe: bus: 1, device: 37 was not an MTP 
device
Feb  5 05:49:17 raspberrypi ModemManager[453]: <info>  [base-manager] 
couldn't check support for device 
'/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2':
 
not supported by any plugin
Feb  5 05:50:33 raspberrypi systemd[1]: Started WeeWX.
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Initializing 
weewxd version 5.0.0
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Command line: 
/usr/share/weewx/weewxd.py /etc/weewx/weewx.conf
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Using Python 3.9.2 
(default, Mar 12 2021, 04:06:34) #012[GCC 10.2.1 20210110]
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Located at 
/usr/bin/python3
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Platform 
Linux-6.1.21-v8+-aarch64-with-glibc2.31
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Locale: 
'en_US.UTF-8'
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Entry path: 
/usr/share/weewx/weewxd.py
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: WEEWX_ROOT: /
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Configuration 
file: /etc/weewx/weewx.conf
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: User module: 
/etc/weewx/bin/user
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO __main__: Debug: 0
Feb  5 05:50:34 raspberrypi weewxd[4471]: INFO weewx.engine: Loading 
station type Vantage (weewx.drivers.vantage)
Feb  5 05:50:34 raspberrypi kernel: [206471.195927] cp210x ttyUSB0: 
usb_serial_generic_read_bulk_callback - urb stopped: -32
Feb  5 05:50:34 raspberrypi kernel: [206471.196586] cp210x ttyUSB0: 
usb_serial_generic_read_bulk_callback - urb stopped: -32
Feb  5 05:50:34 raspberrypi kernel: [206471.268421] usb 1-1.2: USB 
disconnect, device number 37
Feb  5 05:50:34 raspberrypi kernel: [206471.268765] cp210x ttyUSB0: failed 
set request 0x7 status: -19
Feb  5 05:50:34 raspberrypi kernel: [206471.268797] cp210x ttyUSB0: failed 
set request 0x12 status: -19
Feb  5 05:50:34 raspberrypi kernel: [206471.268814] cp210x ttyUSB0: failed 
set request 0x0 status: -19
Feb  5 05:50:34 raspberrypi kernel: [206471.269465] cp210x ttyUSB0: cp210x 
converter now disconnected from ttyUSB0
Feb  5 05:50:34 raspberrypi kernel: [206471.269578] cp210x 1-1.2:1.0: 
device disconnected
Feb  5 05:50:39 raspberrypi weewxd[4471]: ERROR weewx.drivers.vantage: 
Unable to wake up Vantage console
Feb  5 05:50:39 raspberrypi weewxd[4471]: ERROR weewx.engine: Import of 
driver failed: Unable to wake up Vantage console (<class 
'weewx.WakeupError'>)
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     **** 
 Traceback (most recent call last):
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
 File "/usr/share/weewx/weewx/engine.py", line 115, in setupStation
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
   self.console = loader_function(config_dict, self)
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
 File "/usr/share/weewx/weewx/drivers/vantage.py", line 32, in loader
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
   return VantageService(engine, config_dict)
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
 File "/usr/share/weewx/weewx/drivers/vantage.py", line 2046, in __init__
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
   Vantage.__init__(self, **config_dict[DRIVER_NAME])
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
 File "/usr/share/weewx/weewx/drivers/vantage.py", line 539, in __init__
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
   self._setup()
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
 File "/usr/share/weewx/weewx/drivers/vantage.py", line 1440, in _setup
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
   self.port.wakeup_console(max_tries=self.max_tries)
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
 File "/usr/share/weewx/weewx/drivers/vantage.py", line 113, in 
wakeup_console
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     ****   
   raise weewx.WakeupError("Unable to wake up Vantage console")
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL weewx.engine:     **** 
 weewx.WakeupError: Unable to wake up Vantage console
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL __main__: Unable to load 
driver: Unable to wake up Vantage console
Feb  5 05:50:39 raspberrypi weewxd[4471]: CRITICAL __main__:     **** 
 Exiting...
Feb  5 05:50:39 raspberrypi systemd[1]: weewx.service: Main process exited, 
code=exited, status=4/NOPERMISSION
Feb  5 05:50:39 raspberrypi systemd[1]: weewx.service: Failed with result 
'exit-code'.
Feb  5 05:51:15 raspberrypi kernel: [206512.559257] usb 1-1.2: new 
full-speed USB device number 38 using xhci_hcd
Feb  5 05:51:15 raspberrypi kernel: [206512.664702] usb 1-1.2: New USB 
device found, idVendor=10c4, idProduct=ea60, bcdDevice= 1.00
Feb  5 05:51:15 raspberrypi kernel: [206512.664736] usb 1-1.2: New USB 
device strings: Mfr=1, Product=2, SerialNumber=3
Feb  5 05:51:15 raspberrypi kernel: [206512.664754] usb 1-1.2: Product: 
CP2102 USB to UART Bridge Controller
Feb  5 05:51:15 raspberrypi kernel: [206512.664769] usb 1-1.2: 
Manufacturer: Silicon Labs
Feb  5 05:51:15 raspberrypi kernel: [206512.664782] usb 1-1.2: 
SerialNumber: 0001
Feb  5 05:51:15 raspberrypi kernel: [206512.670692] cp210x 1-1.2:1.0: 
cp210x converter detected
Feb  5 05:51:15 raspberrypi kernel: [206512.676544] usb 1-1.2: cp210x 
converter now attached to ttyUSB0
Feb  5 05:51:15 raspberrypi mtp-probe: checking bus 1, device 38: 
"/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2"
Feb  5 05:51:15 raspberrypi mtp-probe: bus: 1, device: 38 was not an MTP 
device
Feb  5 05:51:16 raspberrypi mtp-probe: checking bus 1, device 38: 
"/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2"
Feb  5 05:51:16 raspberrypi mtp-probe: bus: 1, device: 38 was not an MTP 
device
Feb  5 05:51:18 raspberrypi ModemManager[453]: <info>  [base-manager] 
couldn't check support for device 
'/sys/devices/platform/scb/fd500000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0/usb1/1-1/1-1.2':
 
not supported by any plugin
On Saturday, February 3, 2024 at 2:37:15 PM UTC-6 Peter Fletcher wrote:

> It is very unlikely to be the Pi power supply if the Pi itself is not 
> flagging up power problems.
>
> On Friday, February 2, 2024 at 9:23:04 PM UTC-5 Joe wrote:
>
>> Its a standard PI4. No external USB devices are connected except for the 
>> Vantage data logger.
>> There are coils on both ends of the cable, too.  I'm going to try to find 
>> another power supply though.
>>
>> On Friday, February 2, 2024 at 7:53:40 PM UTC-6 Tom Keffer wrote:
>>
>>> Is this a serial logger with a serial-to-USB converter? Or, a USB 
>>> logger? If the former, try another converter.
>>>
>>> A couple of ferrite coils might help. See the wiki article on 
>>> troubleshooting 
>>> Davis stations 
>>> <https://github.com/weewx/weewx/wiki/Troubleshooting-the-Davis-Vantage-station>
>>> .
>>>
>>> It's also possible that the power supply of the RPi is failing and can't 
>>> deliver enough power. Try another power supply, or a powered USB hub.
>>>
>>>
>>>
>>> On Fri, Feb 2, 2024 at 5:36 PM Joe <[email protected]> wrote:
>>>
>>>> So this has starting being a problem again.  Its not really related to 
>>>> version 5.  But it is still happening.
>>>>
>>>> This is a PI4 using the wifi option and a decent power connection and 
>>>> USB cord .
>>>>
>>>> It seems to be a USB detection / conversion problem.
>>>>
>>>> I've tried restarting the vantage a few times, and the PI computer pull 
>>>> the USB plug, and it restarts the USB device, attempts to begin pulling 
>>>> data and gets an error.  
>>>>
>>>> Very frustrating after working for such a long time.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Feb  2 19:30:56 raspberrypi weewxd[920]: INFO __main__: Starting up 
>>>> weewx version 5.0.0
>>>> Feb  2 19:30:57 raspberrypi weewxd[920]: INFO weewx.engine: Clock error 
>>>> is -197.26 seconds (positive is fast)
>>>> Feb  2 19:30:57 raspberrypi weewxd[920]: INFO weewx.drivers.vantage: 
>>>> Clock set to 2024-02-02 19:30:58 CST (1706923858)
>>>> Feb  2 19:30:57 raspberrypi weewxd[920]: INFO weewx.engine: Using 
>>>> binding 'wx_binding' to database 'weewx.sdb'
>>>> Feb  2 19:30:57 raspberrypi weewxd[920]: INFO weewx.manager: Starting 
>>>> backfill of daily summaries
>>>> Feb  2 19:30:57 raspberrypi weewxd[920]: INFO weewx.manager: Daily 
>>>> summaries up to date
>>>> Feb  2 19:30:59 raspberrypi kernel: [ 1426.892512] cp210x ttyUSB0: 
>>>> usb_serial_generic_read_bulk_callback - urb stopped: -32
>>>> Feb  2 19:30:59 raspberrypi kernel: [ 1426.892962] cp210x ttyUSB0: 
>>>> usb_serial_generic_read_bulk_callback - urb stopped: -32
>>>> Feb  2 19:30:59 raspberrypi kernel: [ 1426.983918] usb 1-1.3: USB 
>>>> disconnect, device number 7
>>>> Feb  2 19:30:59 raspberrypi kernel: [ 1426.984264] cp210x ttyUSB0: 
>>>> failed set request 0x7 status: -19
>>>> Feb  2 19:30:59 raspberrypi kernel: [ 1426.984298] cp210x ttyUSB0: 
>>>> failed set request 0x12 status: -19
>>>> Feb  2 19:30:59 raspberrypi kernel: [ 1426.984316] cp210x ttyUSB0: 
>>>> failed set request 0x0 status: -19
>>>> Feb  2 19:30:59 raspberrypi kernel: [ 1426.985025] cp210x ttyUSB0: 
>>>> cp210x converter now disconnected from ttyUSB0
>>>> Feb  2 19:30:59 raspberrypi kernel: [ 1426.985139] cp210x 1-1.3:1.0: 
>>>> device disconnected
>>>> Feb  2 19:30:59 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> SerialException on read.
>>>> Feb  2 19:30:59 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage:   
>>>>  ****  device reports readiness to read but returned no data (device 
>>>> disconnected or multiple access on port?)
>>>> Feb  2 19:30:59 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage:   
>>>>  ****  Is there a competing process running??
>>>> Feb  2 19:31:03 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> Unable to wake up Vantage console
>>>> Feb  2 19:31:03 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> DMPAFT try #1; error: Unable to wake up Vantage console
>>>> Feb  2 19:31:08 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> Unable to wake up Vantage console
>>>> Feb  2 19:31:08 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> DMPAFT try #2; error: Unable to wake up Vantage console
>>>> Feb  2 19:31:13 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> Unable to wake up Vantage console
>>>> Feb  2 19:31:13 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> DMPAFT try #3; error: Unable to wake up Vantage console
>>>> Feb  2 19:31:18 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> Unable to wake up Vantage console
>>>> Feb  2 19:31:18 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> DMPAFT try #4; error: Unable to wake up Vantage console
>>>> Feb  2 19:31:18 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> DMPAFT max tries (4) exceeded.
>>>> Feb  2 19:31:18 raspberrypi weewxd[920]: INFO weewx.engine: Main loop 
>>>> exiting. Shutting engine down.
>>>> Feb  2 19:31:18 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage: 
>>>> SerialException on write.
>>>> Feb  2 19:31:18 raspberrypi weewxd[920]: ERROR weewx.drivers.vantage:   
>>>>  ****  write failed: [Errno 5] Input/output error
>>>> Feb  2 19:31:18 raspberrypi weewxd[920]: CRITICAL __main__: Caught 
>>>> WeeWxIOError: Max tries exceeded while getting archive data.
>>>> Feb  2 19:31:18 raspberrypi weewxd[920]: CRITICAL __main__:     **** 
>>>>  Waiting 60.0 seconds then retrying...
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: INFO __main__: retrying...
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: INFO weewx.engine: Loading 
>>>> station type Vantage (weewx.drivers.vantage)
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: ERROR weewx.engine: Import of 
>>>> driver failed: [Errno 2] could not open port /dev/ttyUSB0: [Errno 2] No 
>>>> such file or directory: '/dev/ttyUSB0' (<class 
>>>> 'serial.serialutil.SerialException'>)
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****  Traceback (most recent call last):
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****    File "/usr/lib/python3/dist-packages/serial/serialposix.py", line 
>>>> 322, in open
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****      self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY | 
>>>> os.O_NONBLOCK)
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****  FileNotFoundError: [Errno 2] No such file or directory: 
>>>> '/dev/ttyUSB0'
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****  
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****  During handling of the above exception, another exception occurred:
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****  
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****  Traceback (most recent call last):
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****    File "/usr/share/weewx/weewx/engine.py", line 115, in setupStation
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****      self.console = loader_function(config_dict, self)
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 32, in 
>>>> loader
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****      return VantageService(engine, config_dict)
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 2046, in 
>>>> __init__
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****      Vantage.__init__(self, **config_dict[DRIVER_NAME])
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 536, in 
>>>> __init__
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****      self.port.openPort()
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****    File "/usr/share/weewx/weewx/drivers/vantage.py", line 319, in 
>>>> openPort
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****      self.serial_port = serial.Serial(self.port, self.baudrate, 
>>>> timeout=self.timeout)
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****    File "/usr/lib/python3/dist-packages/serial/serialutil.py", line 
>>>> 244, in __init__
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****      self.open()
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****    File "/usr/lib/python3/dist-packages/serial/serialposix.py", line 
>>>> 325, in open
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****      raise SerialException(msg.errno, "could not open port {}: 
>>>> {}".format(self._port, msg))
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL weewx.engine:     
>>>> ****  serial.serialutil.SerialException: [Errno 2] could not open port 
>>>> /dev/ttyUSB0: [Errno 2] No such file or directory: '/dev/ttyUSB0'
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL __main__: Unable to 
>>>> load driver: [Errno 2] could not open port /dev/ttyUSB0: [Errno 2] No such 
>>>> file or directory: '/dev/ttyUSB0'
>>>> Feb  2 19:32:18 raspberrypi weewxd[920]: CRITICAL __main__:     **** 
>>>>  Exiting...
>>>> Feb  2 19:32:18 raspberrypi systemd[1]: weewx.service: Main process 
>>>> exited, code=exited, status=4/NOPERMISSION
>>>> Feb  2 19:32:18 raspberrypi systemd[1]: weewx.service: Failed with 
>>>> result 'exit-code'.
>>>> Feb  2 19:32:18 raspberrypi systemd[1]: weewx.service: Consumed 1.013s 
>>>> CPU time.
>>>>
>>>> -- 
>>>> You received this message because you are subscribed to the Google 
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>>>> To unsubscribe from this group and stop receiving emails from it, send 
>>>> an email to [email protected].
>>>> To view this discussion on the web visit 
>>>> https://groups.google.com/d/msgid/weewx-user/d891413b-664b-48fa-9f6e-ed66acaff4dbn%40googlegroups.com
>>>>  
>>>> <https://groups.google.com/d/msgid/weewx-user/d891413b-664b-48fa-9f6e-ed66acaff4dbn%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
>>>

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