Qwiic_SGP40_Py

Python module for the SparkFun Qwiic Air Quality Sensor - SGP40

This python package is a port of the existing SparkFun SGP40 Arduino Library

This package can be used in conjunction with the overall SparkFun qwiic Python Package

New to qwiic? Take a look at the entire SparkFun qwiic ecosystem.

Contents

• Supported Platforms
• Dependencies
• Installation
• Documentation
• Example Use

Supported Platforms

The Qwiic SGP40 Python package currently supports the following platforms:

• Raspberry Pi

Dependencies

This driver package depends on the qwiic I2C driver: Qwiic_I2C_Py

Documentation

The SparkFun Qwiic Sgp40 module documentation is hosted at ReadTheDocs

Installation

PyPi Installation

This repository is hosted on PyPi as the sparkfun-qwiic-sgp40 package. On systems that support PyPi installation via pip, this library is installed using the following commands

For all users (note: the user must have sudo privileges):

sudo pip install sparkfun-qwiic-sgp40

For the current user:

pip install sparkfun-qwiic-sgp40

To install, make sure the setuptools package is installed on the system.

Direct installation at the command line:

python setup.py install

To build a package for use with pip:

python setup.py sdist

A package file is built and placed in a subdirectory called dist. This package file can be installed using pip.

cd dist
pip install sparkfun-qwiic-sgp40-<version>.tar.gz

Example Use

See the examples directory for more detailed use examples.

from __future__ import print_function
import qwiic_sgp40
import time
import sys

def run_example():

	print("\nSparkFun Qwiic Air Quality Sensor - SGP40, Example 1\n")
	my_sgp40 = qwiic_sgp40.QwiicSGP40()
	
	if my_sgp40.begin() != 0:
		print("\nThe Qwiic SGP40 isn't connected to the system. Please check your connection", \
			file=sys.stderr)
		return
	
	print("\nSGP40 ready!")
	
	while True:
		
		print("\nVOC Index is: " + str(my_sgp40.get_VOC_index()))
		
		time.sleep(1)

if __name__ == '__main__':
	try:
		run_example()
	except (KeyboardInterrupt, SystemExit) as exErr:
		print("\nEnding Example 1")
		sys.exit(0)