W1TemperatureParser

Some utils to ease parsing results of DS18B20 temperature sensor in use on the GPIO of the Raspberry PI. Retries a defined amount of times, if the sensor returns non-temperature values like 85000 (initial state) and 127687 (signed int - wrong communication). Also revert the result to fahrenheit.

Installation

Add this line to your application's Gemfile:

gem 'w1_temperature_parser'

And then execute:

$ bundle

Or install it yourself as:

$ gem install w1_temperature_parser

Usage

Just call the binary with the sensor virtual file:

parse_temperature -i  /sys/bus/w1/devices/w1_bus_master1/10-[replace-with-correct-id]/w1_slave
22.762

Result in fahrenheit

parse_temperature -u F -i  /sys/bus/w1/devices/w1_bus_master1/10-[replace-with-correct-id]/w1_slave
73.762

Help dialog

Usage: parse_temperature.rb [options]
    -i, --input=INPUT_FILE           input file
    -u, --unit=UNIT                  Unit of output, c/C - Celsius, f/F - Fahrenheit, k/K - Kelvin (standard celsius)
    -h, --help                       Prints this help

Development

After checking out the repo, run bin/setup to install dependencies. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/mowli/w1_temperature_parser. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the MIT License.