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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