This program runs in the background and listens for UDP broadcast events from a WeatherFlow Tempest weather station. It collects and records a subset of the data, recording the data in a tab-separated timeseries data file, and keeping a JSON file up to date with the most recent state. That JSON file can be used in turn to answer REST API requests for upstream systems.
For usage:
% tempest -h
Output tab-separated timeseries data to STDOUT and diagnostic logs to STDERR:
% tempest
Output diagnostic logs, tab-separated timeseries data, and a current state in JSON to named filesystem locations:
% tempest -o program.log -d data.txt -s /htdocs/data.json
On a host protected by a firewall, you may need to allow UDP broadcast.
For the iptables software firewall, one invocation is:
% iptables -I INPUT -p udp -m pkttype --pkt-type broadcast -j ACCEPT
There is also a simple tempest_dump script with the simplest possible
example of listening for the UDP broadcast packets.
This program requires Ruby and uses only Ruby standard library modules; it should run out of the box on most MacOS or Linux distributions.
Andrew Ho <[email protected]>
WeatherFlow and Tempest are registered trademarks of WeatherFlow-Tempest, Inc. WeathrFlow-Tempest, Inc. does not sponsor, authorize, or endorse this codebase. The files in this repository are authored by Andrew Ho, and are covered by the following MIT license:
Copyright 2021-2022 Andrew Ho
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