sensirion / python-i2c-svm4x

Python I2C driver for SVM41 Development Board SGP41 VOC+NOx sensor and SHT40 humidity and temperature sensor . Please visit https://www.sensirion.com/my-sgp-ek/ for more information

Python Driver for Sensirion SVM4x Evaluation Kit

This repository contains the Python driver to communicate with the Sensirion SVM4x Evaluation Kit using the I²C interface. For details, please read the package description in README.rst.

The SVM4x evaluation kit covers evaluation of the SGP40 and SGP41 sensors.

Usage

See package description in README.rst and user manual at https://sensirion.github.io/python-i2c-svm4x/.

Development

We develop and test this driver using our company internal tools (version control, continuous integration, code review etc.) and automatically synchronize the master branch with GitHub. But this doesn't mean that we don't respond to issues or don't accept pull requests on GitHub. In fact, you're very welcome to open issues or create pull requests :)

Check coding style

The coding style can be checked with flake8:

pip install -e .[test]  # Install requirements
flake8                  # Run style check

In addition, we check the formatting of files with editorconfig-checker:

pip install editorconfig-checker==2.0.3   # Install requirements
editorconfig-checker                      # Run check

Run tests

Unit tests can be run with pytest:

pip install -e .[test]          # Install requirements
pytest -m "not needs_device"    # Run tests without hardware
pytest                          # Run all tests

The tests with the marker needs_device have following requirements:

• An SVM4x device must be connected to a SensorBridge on port 1.
  • WARNING: Some tests modify non-volatile configurations of the device, restore factory defaults etc.! Do not run the tests on a device which you don't want to get modified!
• Pass the serial port where the SensorBridge is connected with --serial-port, e.g. pytest --serial-port=COM7
• The SensorBridge must have default settings (baudrate 460800, address 0)

Build documentation

The documentation can be built with Sphinx:

python setup.py install                        # Install package
pip install -r docs/requirements.txt           # Install requirements
sphinx-versioning build docs docs/_build/html  # Build documentation

License

See LICENSE.