This library supports the use of the CCS811 air quality sensor in CircuitPython.
Author(s): Dean Miller for Adafruit Industries
Software and Dependencies:
- Adafruit CircuitPython firmware for the supported boards: https://github.com/adafruit/circuitpython/releases
- Adafruit’s Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice
- Adafruit’s Register library: https://github.com/adafruit/Adafruit_CircuitPython_Register
CCS811 gas sensor driver.
Quickstart: Importing and using the CCS811
Here is an example of using the
CCS811class. First you will need to import the libraries to use the sensor
import board import adafruit_ccs811
Once this is done you can define your
board.I2Cobject and define your sensor object
i2c = board.I2C() # uses board.SCL and board.SDA ccs811 = adafruit_ccs811.CCS811(i2c)
eco2 = ccs811.eco2 tvoc = ccs811.tvoc
The property reads and returns the current baseline value. The returned value is packed into an integer. Later the same integer can be used in order to set a new baseline.
True when new data has been read.
Equivalent Carbon Dioxide in parts per million. Clipped to 400 to 8192ppm.
True when an error has occured.
Initiate a software reset.
Set the temperature and humidity used when computing eCO2 and TVOC values.
set_interrupt_thresholds(low_med, med_high, hysteresis)¶
Set the thresholds used for triggering the interrupt based on eCO2. The interrupt is triggered when the value crossed a boundary value by the minimum hysteresis value.
Deprecated since version 1.1.5: Hardware support removed by vendor
Temperature based on optional thermistor in Celsius.
Total Volatile Organic Compound in parts per billion.