Adafruit CircuitPython CCS811 Library
=====================================
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:target: https://docs.circuitpython.org/projects/ccs811/en/latest/
:alt: Documentation Status
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:target: https://github.com/astral-sh/ruff
:alt: Code Style: Ruff
CircuitPython driver for the `CCS811 air quality sensor <https://www.adafruit.com/product/3566>`_.
Dependencies
=============
This driver depends on:
* `Adafruit CircuitPython <https://github.com/adafruit/circuitpython>`_
* `Bus Device <https://github.com/adafruit/Adafruit_CircuitPython_BusDevice>`_
* `Register <https://github.com/adafruit/Adafruit_CircuitPython_Register>`_
Please ensure all dependencies are available on the CircuitPython filesystem.
This is easily achieved by downloading
`the Adafruit library and driver bundle <https://github.com/adafruit/Adafruit_CircuitPython_Bundle>`_.
Installing from PyPI
====================
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally `from
PyPI <https://pypi.org/project/adafruit-circuitpython-ccs811/>`_. To install for current user:
.. code-block:: shell
pip3 install adafruit-circuitpython-ccs811
To install system-wide (this may be required in some cases):
.. code-block:: shell
sudo pip3 install adafruit-circuitpython-ccs811
To install in a virtual environment in your current project:
.. code-block:: shell
mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-ccs811
Usage Notes
===========
See `the guide <https://learn.adafruit.com/adafruit-ccs811-air-quality-sensor/python-circuitpython>`_
for wiring and installation instructions.
Of course, you must import the library to use it:
.. code:: python
import busio
import adafruit_ccs811
Next, initialize the I2C bus object.
.. code:: python
from board import *
i2c = board.I2C() # uses board.SCL and board.SDA
Once you have created the I2C interface object, you can use it to instantiate
the CCS811 object
.. code:: python
ccs = adafruit_ccs811.CCS811(i2c)
Reading Sensor
--------------
To read the gas sensor simply read the attributes:
.. code:: python
print("CO2: ", ccs.eco2, " TVOC:", ccs.tvoc)
Documentation
=============
API documentation for this library can be found on `Read the Docs <https://docs.circuitpython.org/projects/ccs811/en/latest/>`_.
For information on building library documentation, please check out `this guide <https://learn.adafruit.com/creating-and-sharing-a-circuitpython-library/sharing-our-docs-on-readthedocs#sphinx-5-1>`_.
Contributing
============
Contributions are welcome! Please read our `Code of Conduct
<https://github.com/adafruit/Adafruit_CircuitPython_CCS811/blob/main/CODE_OF_CONDUCT.md>`_
before contributing to help this project stay welcoming.
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