WeeWX 4.* runs as root. WeeWX 5.* does not run as root. As you write the
permissions of /dev/ttyAMA0 are user root and group dialout. You may
include the user weewx into group dialout or follow the instructions Tom
and Matthew gave in several of the previous threads regarding this issue.
Mark Conner schrieb am Dienstag, 6. Februar 2024 um 20:45:35 UTC+1:
> Hi,
>
> I recently tried to upgrade my weewx installation from 5.0 to 5.0.1 on my
> Raspberry Pi 2 using 'sudo apt-get' and afterwards I was unable to start
> weewxd. I am reading from a Davis Vantage Pro2 with a serial logger via a
> MeteoPi interface. Thinking it was an upgrade problem, I downgraded to
> 5.0.0 and still have the same issue. Here are the weewxd related lines
> from startup from /var/log/syslog:
>
> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Initializing
>> weewxd version 5.0.0
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Command line:
>> /usr/share/weewx/weewxd.py /etc/weewx/weewx.conf
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Using Python
>> 3.9.2 (default, Mar 12 2021, 04:06:34) #012[GCC 10.2.1 20210110]
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Located at
>> /usr/bin/python3
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Platform
>> Linux-6.1.21-v7+-armv7l-with-glibc2.31
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Locale:
>> 'en_US'
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Entry path:
>> /usr/share/weewx/weewxd.py
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: WEEWX_ROOT: /
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Configuration
>> file: /etc/weewx/weewx.conf
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: User module:
>> /etc/weewx/bin/user
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO __main__: Debug: 0
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: INFO weewx.engine: Loading
>> station type Vantage (weewx.drivers.vantage)
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: ERROR weewx.engine: Import
>> of driver failed: [Errno 13] could not open port /dev/ttyAMA0: [Errno 13]
>> Permission denied: '/dev/ttyAMA0' (<class
>> 'serial.serialutil.SerialException'>)
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** Traceback (most recent call last):
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** File
>> "/usr/local/lib/python3.9/dist-packages/serial/serialposix.py", line 322,
>> in open
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** self.fd = os.open(self.portstr, os.O_RDWR | os.O_NOCTTY |
>> os.O_NONBLOCK)
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** PermissionError: [Errno 13] Permission denied: '/dev/ttyAMA0'
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> ****
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** During handling of the above exception, another exception occurred:
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> ****
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** Traceback (most recent call last):
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** File "/usr/share/weewx/weewx/engine.py", line 115, in setupStation
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** self.console = loader_function(config_dict, self)
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** File "/usr/share/weewx/weewx/drivers/vantage.py", line 32, in loader
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** return VantageService(engine, config_dict)
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** File "/usr/share/weewx/weewx/drivers/vantage.py", line 2046, in
>> __init__
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** Vantage.__init__(self, **config_dict[DRIVER_NAME])
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** File "/usr/share/weewx/weewx/drivers/vantage.py", line 536, in
>> __init__
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** self.port.openPort()
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** File "/usr/share/weewx/weewx/drivers/vantage.py", line 319, in
>> openPort
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** self.serial_port = serial.Serial(self.port, self.baudrate,
>> timeout=self.timeout)
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** File "/usr/local/lib/python3.9/dist-packages/serial/serialutil.py",
>> line 244, in __init__
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** self.open()
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** File
>> "/usr/local/lib/python3.9/dist-packages/serial/serialposix.py", line 325,
>> in open
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** raise SerialException(msg.errno, "could not open port {}:
>> {}".format(self._port, msg))
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL weewx.engine:
>> **** serial.serialutil.SerialException: [Errno 13] could not open port
>> /dev/ttyAMA0: [Errno 13] Permission denied: '/dev/ttyAMA0'
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL __main__: Unable to
>> load driver: [Errno 13] could not open port /dev/ttyAMA0: [Errno 13]
>> Permission denied: '/dev/ttyAMA0'
>> Feb 6 13:29:00 raspberrypi110 weewxd[2836]: CRITICAL __main__: ****
>> Exiting...
>
>
> I did not change anything myself related to /dev/ttyAMA0 in the
> upgrade/downgrade process. What is strange is that I can read current data
> from the VP2 using weectl.
>
> pi@raspberrypi110:~ $ sudo weectl device --current
>> Using configuration file /etc/weewx/weewx.conf
>> Using driver weewx.drivers.vantage.
>> Using Vantage driver version 3.6.2 (weewx.drivers.vantage)
>> Querying the station for current weather data...
>> 2024-02-06 13:38:37 CST (1707248317) 'barometer': '30.073',
>> 'consBatteryVoltage': '4.71', 'dateTime': '1707248317', 'dayET': '0.0',
>> 'dayRain': '0.0', 'extraAlarm1': '0', 'extraAlarm2': '0', 'extraAlarm3':
>> '0', 'extraAlarm4': '0', 'extraAlarm5': '0', 'extraAlarm6': '0',
>> 'extraAlarm7': '0', 'extraAlarm8': '0', 'extraTemp1': '35.0',
>> 'forecastIcon': '7', 'forecastRule': '60', 'inHumidity': '38.0',
>> 'insideAlarm': '0', 'inTemp': '69.6', 'monthET': '0.0', 'monthRain':
>> '0.01', 'outHumidity': '74.0', 'outsideAlarm1': '0', 'outsideAlarm2': '0',
>> 'outTemp': '50.6', 'rain': 'None', 'rainAlarm': '0', 'rainRate': '0.0',
>> 'soilLeafAlarm1': '0', 'soilLeafAlarm2': '0', 'soilLeafAlarm3': '0',
>> 'soilLeafAlarm4': '0', 'stormRain': '0.0', 'sunrise': '1707226320',
>> 'sunset': '1707263280', 'txBatteryStatus': '0', 'usUnits': '1', 'windDir':
>> '156.0', 'windSpeed': '10.0', 'windSpeed10': '6.0', 'yearET': '0.0',
>> 'yearRain': '0.02'
>
>
> Below is an ls -l of /dev/ttyAMA0
>
>>
>> pi@raspberrypi110:~ $ ls -l /dev/ttyAMA0
>> crw-rw---- 1 root dialout 204, 64 Feb 6 13:38 /dev/ttyAMA0
>
>
> Original installation of weewx on this device was approximately 4.8.0.
>
> I have tried both a "shutdown -r" and a shutdown/power-cycle in an attempt
> to clear the error.
>
> - Mark
>
>
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