Hello,
I am having some issues getting BME280 pressure data into my weewx data. I
am currently capturing data from an Acurite 5n1 using SDR which is running
off a raspberry pi 3. The weewx version is 4.1.1 and all my data is
uploading with no issue. I wanted to added pressure data so I followed the
guide at (https://gitlab.com/wjcarpenter/bme280wx), which led me to (
https://pypi.org/project/RPi.bme280/) to get i2c ports up and running.
After getting that setup and running the following code, I am able to read
all the data from the BME280 sensor.
import smbus2import bme280
port = 1address = 0x76bus = smbus2.SMBus(port)
calibration_params = bme280.load_calibration_params(bus, address)
# the sample method will take a single reading and return a#
compensated_reading objectdata = bme280.sample(bus, address, calibration_params)
# the compensated_reading class has the following
attributesprint(data.id)print(data.timestamp)print(data.temperature)print(data.pressure)print(data.humidity)
# there is a handy string representation tooprint(data)
With the following output:
pi@raspberrypi:~/Desktop $ python BME280_Test.py
d8bceed7-07e4-499f-a28e-c29928734eab
2020-06-22 09:55:51.107513
25.5355866359
1016.85232725
46.2092222928
compensated_reading(id=d8bceed7-07e4-499f-a28e-c29928734eab, timestamp=2020-
06-22 09:55:51.107513, temp=25.536 °C, pressure=1016.85 hPa, humidity=46.21
% rH)
After that, I've ran the wee_extension --install command to install
bme280wx. I then stop weewx and then started it again and I keep getting
the following error:
Jun 22 09:58:36 raspberrypi weewx[455] INFO user.sdr: startup process
'rtl_433 -M utc -F json'
Jun 22 09:58:36 raspberrypi weewxd: bme280: bme280wx configuration
{u'temperature_must_have': u'', u'humidityKeys': u'inHumidity',
u'pressureKeys': u'pressure', u'pressure_must_have': u'inTemp',
u'i2c_port': u'1', u'humidity_must_have': u'', u'i2c_address': u'0x76',
u'usUnits': u'US', u'temperatureKeys': u'inTemp'}
Jun 22 09:58:36 raspberrypi weewx[455] INFO user.sdr: shutdown process
rtl_433 -M utc -F json
Jun 22 09:58:47 raspberrypi weewx[455] INFO user.sdr: timed out waiting for
stderr-thread
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: Caught
unrecoverable exception:
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: ****
'module' object has no attribute 'load_calibration_params'
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: ****
Traceback (most recent call last):
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: **** File
"/usr/share/weewx/weewxd", line 148, in main
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: ****
engine = weewx.engine.StdEngine(config_dict)
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: **** File
"/usr/share/weewx/weewx/engine.py", line 75, in __init__
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: ****
self.loadServices(config_dict)
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: **** File
"/usr/share/weewx/weewx/engine.py", line 138, in loadServices
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: **** obj
= weeutil.weeutil.get_object(svc)(self,config_dict)
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: **** File
"/usr/share/weewx/user/bme280wx.py", line 61, in __init__
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: ****
self.calibration_params = bme280.load_calibration_params(self.bus,
self.address)
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: ****
AttributeError: 'module' object has no attribute 'load_calibration_params'
Jun 22 09:58:47 raspberrypi weewx[455] CRITICAL __main__: **** Exiting.
I'm not sure why this is occurring because I don't get this error running
the test code above which calls the 'load_calibration_params' Any ideas?
Thanks,
Troy
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