I did get my WMR89 this monday for replacement for 5 years old WMR88, which
starts to shown some defunction features.
oon appeared that direct replacement was not possible. I found this
fcauwe's driver and instruction to modify cp210x-driver. I changed cp210x
source code
from
https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
to recognize WMR89, compiled and installed it. Now loading module creates
/dev/ttyUSB0.
In weewx.conf I added this:
[WMR89]
# This section is for the Oregon Scientific WMR100
# The driver to use
#driver = user.wmr89
driver = weewx.drivers.wmr89
# The station model, e.g., WMR100, WMR100N, WMRS200
model = WMR89
type = serial
product_id = 0xca0a
port = /dev/ttyUSB0
It did not work before I added "type=serial"
Driver should use these parameters as default. I found this
"type"-parameter by reading driver code.
After these, driver worked, but I have two extra temperature sensors.
Temperature packet in driver is like this:
if (packet[2].encode('hex')=='00'):
_record = {
'humidity_in': hum,
'temperature_in': float(temp),
'dewpoint_in': dew,
'dateTime': int(time.time() + 0.5),
'usUnits': weewx.METRIC
}
elif (packet[2].encode('hex')=='01'):
_record = {
'humidity_out': hum,
'temperature_out': float(temp),
'dewpoint_out': dew,
'dateTime': int(time.time() + 0.5),
'usUnits': weewx.METRIC
}
I did add this:
elif (packet[2].encode('hex')=='02'):
_record = {
'humidity_1': hum,
'temperature_1': float(temp),
'dewpoint_1': dew,
'dateTime': int(time.time() + 0.5),
'usUnits': weewx.METRIC
}
elif (packet[2].encode('hex')=='03'):
_record = {
'humidity_2': hum,
'temperature_2': float(temp),
'dewpoint_2': dew,
'dateTime': int(time.time() + 0.5),
'usUnits': weewx.METRIC
}
Now everything is working, except barometer data is quite often missing.
Timo
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