Python Driver for Sensirion Mass Flow Controllers/Meters

This repository contains the SHDLC driver for the Sensirion SFC5xxx MFCs and SFM5xxx MFMs as a Python package. For details, please read the package description in README.rst.

Usage

See package description in README.rst and user manual at https://sensirion.github.io/python-shdlc-sfc5xxx/.

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

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 SFC5xxx device must be connected to the computer.
  • NOTE: Firmware version must be 1.66 or higher.
  • WARNING: Some tests modify non-volatile configurations of the MFC, restore factory defaults etc.! Do not run the tests on a device which you don't want to get modified!
• You have to specify the serial port (and optionally other connection parameters) used to connect to the SFC5xxx device:
  • --serial-port: The serial port where the device is connected (e.g. COM7).
  • --serial-bitrate: The bitrate of the connected device (defaults to 115200).
  • --slave-address: The slave address of the connected device (defaults to 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.