Temperature being converted when I don't want it to

[bdf0506]

I am using the SDR driver to grab stats from an RTL_433 capable devices. It grabs the data from the device and places in the loop packets in Farenheight - which is exactly what I want.

Problem is, these are custom database fields that I created for them, so now I need to tell WeeWx which units to use. Once I tell it which unit to use, WeeWx is taking it upon itself to do an unwanted conversion. It probably thinks I am giving it to WeeWx in C and trying to convert to F, when really all I want to do is take my perfect measurement and apply a unit to it for reports.

What am I missing? How can I apply a unit and NOT have it perform any conversions?

weewx.conf

[StdConvert]

target_unit=US

user/extensions.py 

import weewx.units
weewx.units.obs_group_dict['BasementTemp'] = 'group_temperature'
weewx.units.obs_group_dict['CrawlSpaceTemp'] = 'group_temperature'

Oct 6 15:48:13 weewx weewx[23355] WARNING weewx.qc: 2020-10-06 15:48:03 EDT (1602013683) LOOP value 'BasementTemp' 166.06400000000002 outside limits (10.0, 120.0)
Oct 6 15:48:13 weewx weewx[23355] WARNING weewx.qc: 2020-10-06 15:48:09 EDT (1602013689) LOOP value 'CrawlSpaceTemp' 155.696 outside limits (10.0, 120.0)
Oct 6 15:48:24 weewx weewx[23355] WARNING weewx.qc: 2020-10-06 15:48:19 EDT (1602013699) LOOP value 'BasementTemp' 166.06400000000002 outside limits (10.0, 120.0)
Oct 6 15:48:30 weewx weewx[23355] WARNING weewx.qc: 2020-10-06 15:48:25 EDT (1602013705) LOOP value 'CrawlSpaceTemp' 155.696 outside limits (10.0, 120.0)

[Tom Keffer]

Doesn't matter what units are in the database. Doesn't matter what units are used to display. What matters is that all units within the loop packet are in the same unit system. So, if you're adding a temperature in Fahrenheit to a loop packet in Celsius, you're going to get the results you see.

You must check what units the incoming packet is in, then convert your temperature as necessary. The unit system used by the packet is in the field 'usUnits' (an unfortunate name, inherited from wview).

-tk

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[bdf0506]

Makes sense - thanks for clarifying. Yea, so it looks like I need to ensure that I'm consistent with ALL measurements in my loop packets to be one or the other.