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Python Driver for Sensirion I²C SDP8xx and SDP3x Sensors

This repository contains the Python driver to communicate with Sensirion SDP8xx and SDP3x sensors using the I²C interface. For details, please read the package description in README.rst.

Supported Sensors

• SDP8xx: Differential pressure sensors of the SDP800 series are the reliable solution for precise air flow measurement in most demanding but cost-sensitive HVAC applications, such as VAV controllers, burners, heat recovery systems and filter monitoring.
• SDP3x: The SDP3x is the world's smallest differential pressure sensor. It measures just 5 mm x 8 mm x 5 mm, opening up new dimensions of integration and application possibilities. The sensor is based on the next generation of the CMOSens® sensor chip and is the heart of Sensirion's new sensor platform for measuring differential pressure and mass flow.

Usage

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

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
pytest -m "not (needs_device and not needs_sdp)"   # Run all tests for sdp

The tests with the marker needs_sdp have following requirements:

• An SDP device must be connected to a SensorBridge on port 1.
• 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.