Here's what I have working:
#!/usr/bin/env python
import syslog
import weewx
from weewx.wxengine import StdService
from Adafruit_BME280 import *
class PressureService(StdService):
def __init__(self, engine, config_dict):
super(PressureService, self).__init__(engine, config_dict)
self.bind(weewx.NEW_ARCHIVE_RECORD, self.read_sensors)
def read_sensors(self, event):
sensor = BME280(t_mode=BME280_OSAMPLE_8,
p_mode=BME280_OSAMPLE_8, h_mode=BME280_OSAMPLE_8)
degrees = sensor.read_temperature()
pascals = sensor.read_pressure()
event.record['inTemp'] = float((degrees*9/5)+32)
event.record['pressure'] = float(pascals * 0.00029530)
It is reporting both pressure and indoor temp, I don't have the one that
has humidity.
On 8/21/2018 11:18 AM, David Moore wrote:
I am also interested in this, and here's what I've managed to do / not do.
I attached the sensor, and ran
|
sudo i2cdetect -y 1
|
to check it was there.
It was showing as position 0x77, which is decimal 119 just as in
Craig's post above.
These parts were missing above, and I eventually figured out as he's
running it as a service:
I then took his file, bmp280.py amd put it in /usr/share/weewx/user/
I then added to weewx.conf as above.
However i ALSO had to add this to the engine services part:
|
archive_services =weewx.engine.StdArchive,user.bmp280.bmp
|
(I was getting errors before that)
So, now weewx runs without error
In the logs I can see this:
|
Aug2117:27:38WeatherPiweewx[1589]:manager:Dailysummary version is2.0
Aug2117:27:38WeatherPiweewx[1589]:engine:Usingbinding 'wx_binding'to
database 'weewx'
Aug2117:27:38WeatherPiweewx[1589]:manager:Startingbackfill of daily
summaries
Aug2117:27:38WeatherPiweewx[1589]:engine:Finishedloading service
weewx.engine.StdArchive
Aug2117:27:38WeatherPiweewx[1589]:engine:Loadingservice user.bmp280.bmp
Aug2117:27:38WeatherPiweewx[1589]:engine:Finishedloading service
user.bmp280.bmp
Aug2117:27:38WeatherPiweewx[1589]:engine:Loadingservice
weewx.restx.StdStationRegistry
Aug2117:27:38WeatherPiweewx[1589]:restx:StationRegistry:Registrationnotrequested.
Aug2117:27:38WeatherPiweewx[1589]:engine:Finishedloading service
weewx.restx.StdStationRegistry
|
However, nothing is getting written to db.
I tried this to check everything on the sensor was ok:
|
git clone https://github.com/adafruit/Adafruit_Python_GPIO.git
<https://github.com/adafruit/Adafruit_Python_GPIO.git>
cd Adafruit_Python_GPIO
sudo python setup.py install
cd ../
git clone https://github.com/adafruit/Adafruit_Python_BME280.git
<https://github.com/adafruit/Adafruit_Python_BME280.git>
cd Adafruit_Python_BME280
python ./Adafruit_BME280_Example.py
Temp=29.053deg C
Pressure=890.79hPa
Humidity=0.00%
|
So, I'm stumped now. Will let you know if I get it working, however I
feel I'm going to need some help...
On Tuesday, 26 June 2018 20:15:21 UTC+2, Tim Urberg wrote:
I know it's been a while, but just wondering if there's any update
on this, I was thinking of using this and wanted to make sure it
worked before buying one.
Thanks!
Tim
On Saturday, April 8, 2017 at 6:35:33 AM UTC-5, Craig Thom wrote:
col_pres should be "pressure. I read that part of the weewx
documentation, but I didn't remember it right.
The pressure from the BMP280 does not take elevation into account.
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