crt - Cumulus Real Time Copyright 2014-2024 Matthew Wall Distributed under terms of the GPLv3

crt is a weeWX extension that emits a realtime.txt file in the format specified by Cumulus

http://wiki.sandaysoft.com/a/Realtime.txt

This extension can output three different files:

realtime.txt realtime.xml sunbird

=============================================================================== Installation

1) install the extension

weectl extension install https://github.com/matthewwall/weewx-crt/archive/master.zip

2) restart weewx

=============================================================================== Permissions

Be sure that the user running weeWX has permission to write the CRT file(s). The default location for the files is /var/tmp, but if you change this to a different location, the user running weeWX must be able to write to that directory.

=============================================================================== Configuration options

Specify options in the CumulusRealTime section of the weeWX configuration file.

The default configuration emits only realtime.txt to /var/tmp/realtime.txt To emit the XML or sunbird files, specify them in the CRT configuration stanza.

[CumulusRealTime] realtime_txt = /path/to/realtime.txt realtime_xml = /path/to/realtime.xml sunbird = /path/to/sunbird.txt

The default configuration binds to loop packets. If you use CRT with a driver that emits partial packets, you may see many NULL values. Bind to archive records to get full packet data.

[CumulusRealTime] binding = archive # default is 'loop'

Control the units using settings for unit_system or individual observations.

[CumulusRealTime] unit_system = (US | METRIC | METRICWX) wind_units = (meter_per_second | mile_per_hour | km_per_hour | knot) temperature_units = (degree_C | degree_F) pressure_units = (hPa | mbar | inHg) rain_units = (mm | inch) cloudbase_units = (foot | meter)

For details about options, see the documentation in the crt.py file.