├── .gitattributes ├── .github ├── PULL_REQUEST_TEMPLATE │ └── adafruit_circuitpython_pr.md └── workflows │ ├── build.yml │ ├── failure-help-text.yml │ ├── release_gh.yml │ └── release_pypi.yml ├── .gitignore ├── .pre-commit-config.yaml ├── .readthedocs.yaml ├── CODE_OF_CONDUCT.md ├── LICENSE ├── LICENSES ├── CC-BY-4.0.txt ├── MIT.txt └── Unlicense.txt ├── README.rst ├── README.rst.license ├── adafruit_sgp30.py ├── docs ├── _static │ ├── favicon.ico │ └── favicon.ico.license ├── api.rst ├── api.rst.license ├── conf.py ├── examples.rst ├── examples.rst.license ├── index.rst ├── index.rst.license └── requirements.txt ├── examples └── sgp30_simpletest.py ├── optional_requirements.txt ├── pyproject.toml ├── requirements.txt └── ruff.toml /.gitattributes: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2024 Justin Myers for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: Unlicense 4 | 5 | .py text eol=lf 6 | .rst text eol=lf 7 | .txt text eol=lf 8 | .yaml text eol=lf 9 | .toml text eol=lf 10 | .license text eol=lf 11 | .md text eol=lf 12 | -------------------------------------------------------------------------------- /.github/PULL_REQUEST_TEMPLATE/adafruit_circuitpython_pr.md: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2021 Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | Thank you for contributing! Before you submit a pull request, please read the following. 6 | 7 | Make sure any changes you're submitting are in line with the CircuitPython Design Guide, available here: https://docs.circuitpython.org/en/latest/docs/design_guide.html 8 | 9 | If your changes are to documentation, please verify that the documentation builds locally by following the steps found here: https://adafru.it/build-docs 10 | 11 | Before submitting the pull request, make sure you've run Pylint and Black locally on your code. You can do this manually or using pre-commit. Instructions are available here: https://adafru.it/check-your-code 12 | 13 | Please remove all of this text before submitting. Include an explanation or list of changes included in your PR, as well as, if applicable, a link to any related issues. 14 | -------------------------------------------------------------------------------- /.github/workflows/build.yml: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | name: Build CI 6 | 7 | on: [pull_request, push] 8 | 9 | jobs: 10 | test: 11 | runs-on: ubuntu-latest 12 | steps: 13 | - name: Run Build CI workflow 14 | uses: adafruit/workflows-circuitpython-libs/build@main 15 | -------------------------------------------------------------------------------- /.github/workflows/failure-help-text.yml: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2021 Scott Shawcroft for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | name: Failure help text 6 | 7 | on: 8 | workflow_run: 9 | workflows: ["Build CI"] 10 | types: 11 | - completed 12 | 13 | jobs: 14 | post-help: 15 | runs-on: ubuntu-latest 16 | if: ${{ github.event.workflow_run.conclusion == 'failure' && github.event.workflow_run.event == 'pull_request' }} 17 | steps: 18 | - name: Post comment to help 19 | uses: adafruit/circuitpython-action-library-ci-failed@v1 20 | -------------------------------------------------------------------------------- /.github/workflows/release_gh.yml: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | name: GitHub Release Actions 6 | 7 | on: 8 | release: 9 | types: [published] 10 | 11 | jobs: 12 | upload-release-assets: 13 | runs-on: ubuntu-latest 14 | steps: 15 | - name: Run GitHub Release CI workflow 16 | uses: adafruit/workflows-circuitpython-libs/release-gh@main 17 | with: 18 | github-token: ${{ secrets.GITHUB_TOKEN }} 19 | upload-url: ${{ github.event.release.upload_url }} 20 | -------------------------------------------------------------------------------- /.github/workflows/release_pypi.yml: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | name: PyPI Release Actions 6 | 7 | on: 8 | release: 9 | types: [published] 10 | 11 | jobs: 12 | upload-release-assets: 13 | runs-on: ubuntu-latest 14 | steps: 15 | - name: Run PyPI Release CI workflow 16 | uses: adafruit/workflows-circuitpython-libs/release-pypi@main 17 | with: 18 | pypi-username: ${{ secrets.pypi_username }} 19 | pypi-password: ${{ secrets.pypi_password }} 20 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2022 Kattni Rembor, written for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | # Do not include files and directories created by your personal work environment, such as the IDE 6 | # you use, except for those already listed here. Pull requests including changes to this file will 7 | # not be accepted. 8 | 9 | # This .gitignore file contains rules for files generated by working with CircuitPython libraries, 10 | # including building Sphinx, testing with pip, and creating a virual environment, as well as the 11 | # MacOS and IDE-specific files generated by using MacOS in general, or the PyCharm or VSCode IDEs. 12 | 13 | # If you find that there are files being generated on your machine that should not be included in 14 | # your git commit, you should create a .gitignore_global file on your computer to include the 15 | # files created by your personal setup. To do so, follow the two steps below. 16 | 17 | # First, create a file called .gitignore_global somewhere convenient for you, and add rules for 18 | # the files you want to exclude from git commits. 19 | 20 | # Second, configure Git to use the exclude file for all Git repositories by running the 21 | # following via commandline, replacing "path/to/your/" with the actual path to your newly created 22 | # .gitignore_global file: 23 | # git config --global core.excludesfile path/to/your/.gitignore_global 24 | 25 | # CircuitPython-specific files 26 | *.mpy 27 | 28 | # Python-specific files 29 | __pycache__ 30 | *.pyc 31 | 32 | # Sphinx build-specific files 33 | _build 34 | 35 | # This file results from running `pip -e install .` in a local repository 36 | *.egg-info 37 | 38 | # Virtual environment-specific files 39 | .env 40 | .venv 41 | 42 | # MacOS-specific files 43 | *.DS_Store 44 | 45 | # IDE-specific files 46 | .idea 47 | .vscode 48 | *~ 49 | -------------------------------------------------------------------------------- /.pre-commit-config.yaml: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2024 Justin Myers for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: Unlicense 4 | 5 | repos: 6 | - repo: https://github.com/pre-commit/pre-commit-hooks 7 | rev: v4.5.0 8 | hooks: 9 | - id: check-yaml 10 | - id: end-of-file-fixer 11 | - id: trailing-whitespace 12 | - repo: https://github.com/astral-sh/ruff-pre-commit 13 | rev: v0.3.4 14 | hooks: 15 | - id: ruff-format 16 | - id: ruff 17 | args: ["--fix"] 18 | - repo: https://github.com/fsfe/reuse-tool 19 | rev: v3.0.1 20 | hooks: 21 | - id: reuse 22 | -------------------------------------------------------------------------------- /.readthedocs.yaml: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: Unlicense 4 | 5 | # Read the Docs configuration file 6 | # See https://docs.readthedocs.io/en/stable/config-file/v2.html for details 7 | 8 | # Required 9 | version: 2 10 | 11 | sphinx: 12 | configuration: docs/conf.py 13 | 14 | build: 15 | os: ubuntu-20.04 16 | tools: 17 | python: "3" 18 | 19 | python: 20 | install: 21 | - requirements: docs/requirements.txt 22 | - requirements: requirements.txt 23 | -------------------------------------------------------------------------------- /CODE_OF_CONDUCT.md: -------------------------------------------------------------------------------- 1 | 6 | 7 | # Adafruit Community Code of Conduct 8 | 9 | ## Our Pledge 10 | 11 | In the interest of fostering an open and welcoming environment, we as 12 | contributors and leaders pledge to making participation in our project and 13 | our community a harassment-free experience for everyone, regardless of age, body 14 | size, disability, ethnicity, gender identity and expression, level or type of 15 | experience, education, socio-economic status, nationality, personal appearance, 16 | race, religion, or sexual identity and orientation. 17 | 18 | ## Our Standards 19 | 20 | We are committed to providing a friendly, safe and welcoming environment for 21 | all. 22 | 23 | Examples of behavior that contributes to creating a positive environment 24 | include: 25 | 26 | * Be kind and courteous to others 27 | * Using welcoming and inclusive language 28 | * Being respectful of differing viewpoints and experiences 29 | * Collaborating with other community members 30 | * Gracefully accepting constructive criticism 31 | * Focusing on what is best for the community 32 | * Showing empathy towards other community members 33 | 34 | Examples of unacceptable behavior by participants include: 35 | 36 | * The use of sexualized language or imagery and sexual attention or advances 37 | * The use of inappropriate images, including in a community member's avatar 38 | * The use of inappropriate language, including in a community member's nickname 39 | * Any spamming, flaming, baiting or other attention-stealing behavior 40 | * Excessive or unwelcome helping; answering outside the scope of the question 41 | asked 42 | * Trolling, insulting/derogatory comments, and personal or political attacks 43 | * Promoting or spreading disinformation, lies, or conspiracy theories against 44 | a person, group, organisation, project, or community 45 | * Public or private harassment 46 | * Publishing others' private information, such as a physical or electronic 47 | address, without explicit permission 48 | * Other conduct which could reasonably be considered inappropriate 49 | 50 | The goal of the standards and moderation guidelines outlined here is to build 51 | and maintain a respectful community. 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IN NO EVENT SHALL THE AUTHORS 17 | OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 18 | WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 19 | OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 20 | -------------------------------------------------------------------------------- /LICENSES/Unlicense.txt: -------------------------------------------------------------------------------- 1 | This is free and unencumbered software released into the public domain. 2 | 3 | Anyone is free to copy, modify, publish, use, compile, sell, or distribute 4 | this software, either in source code form or as a compiled binary, for any 5 | purpose, commercial or non-commercial, and by any means. 6 | 7 | In jurisdictions that recognize copyright laws, the author or authors of this 8 | software dedicate any and all copyright interest in the software to the public 9 | domain. We make this dedication for the benefit of the public at large and 10 | to the detriment of our heirs and successors. We intend this dedication to 11 | be an overt act of relinquishment in perpetuity of all present and future 12 | rights to this software under copyright law. 13 | 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS 16 | FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS 17 | BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 18 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH 19 | THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. For more information, 20 | please refer to 21 | -------------------------------------------------------------------------------- /README.rst: -------------------------------------------------------------------------------- 1 | 2 | Introduction 3 | ============ 4 | 5 | .. image:: https://readthedocs.org/projects/adafruit-circuitpython-sgp30/badge/?version=latest 6 | :target: https://docs.circuitpython.org/projects/sgp30/en/latest/ 7 | :alt: Documentation Status 8 | 9 | .. image:: https://raw.githubusercontent.com/adafruit/Adafruit_CircuitPython_Bundle/main/badges/adafruit_discord.svg 10 | :target: https://adafru.it/discord 11 | :alt: Discord 12 | 13 | 14 | .. image:: https://github.com/adafruit/Adafruit_CircuitPython_SGP30/workflows/Build%20CI/badge.svg 15 | :target: https://github.com/adafruit/Adafruit_CircuitPython_SGP30/actions/ 16 | :alt: Build Status 17 | 18 | .. image:: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json 19 | :target: https://github.com/astral-sh/ruff 20 | :alt: Code Style: Ruff 21 | 22 | A CircuitPython driver for the Sensirion SGP30 gas sensor with eCO2 and TVOC output. This sensor uses I2C! 23 | 24 | Installation and Dependencies 25 | ============================= 26 | This driver depends on: 27 | 28 | * `Adafruit CircuitPython `_ 29 | * `Bus Device `_ 30 | 31 | Please ensure all dependencies are available on the CircuitPython filesystem. 32 | This is easily achieved by downloading 33 | `the Adafruit library and driver bundle `_. 34 | 35 | Installing from PyPI 36 | -------------------- 37 | 38 | On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally `from 39 | PyPI `_. To install for current user: 40 | 41 | .. code-block:: shell 42 | 43 | pip3 install adafruit-circuitpython-sgp30 44 | 45 | To install system-wide (this may be required in some cases): 46 | 47 | .. code-block:: shell 48 | 49 | sudo pip3 install adafruit-circuitpython-sgp30 50 | 51 | To install in a virtual environment in your current project: 52 | 53 | .. code-block:: shell 54 | 55 | mkdir project-name && cd project-name 56 | python3 -m venv .venv 57 | source .venv/bin/activate 58 | pip3 install adafruit-circuitpython-sgp30 59 | 60 | Usage Notes 61 | ============= 62 | 63 | See `the guide `_ 64 | for wiring and installation instructions. 65 | 66 | First, import the library: 67 | 68 | .. code-block:: python 69 | 70 | import busio 71 | import adafruit_sgp30 72 | 73 | Next, initialize the I2C bus object: 74 | 75 | .. code-block:: python 76 | 77 | import board 78 | i2c_bus = busio.I2C(board.SCL, board.SDA, frequency=100000) 79 | 80 | Since we have the I2C bus object, we can now use it to instantiate the SGP30 object: 81 | 82 | .. code-block:: python 83 | 84 | sgp30 = adafruit_sgp30.Adafruit_SGP30(i2c_bus) 85 | 86 | Reading from the Sensor 87 | ------------------------ 88 | 89 | To read from the sensor: 90 | 91 | .. code-block:: python 92 | 93 | eCO2, TVOC = sgp30.iaq_measure() 94 | print("eCO2 = %d ppm \t TVOC = %d ppb" % (eCO2, TVOC)) 95 | 96 | 97 | Documentation 98 | ============= 99 | 100 | API documentation for this library can be found on `Read the Docs `_. 101 | 102 | For information on building library documentation, please check out `this guide `_. 103 | 104 | Contributing 105 | ============ 106 | 107 | Contributions are welcome! Please read our `Code of Conduct 108 | `_ 109 | before contributing to help this project stay welcoming. 110 | -------------------------------------------------------------------------------- /README.rst.license: -------------------------------------------------------------------------------- 1 | SPDX-FileCopyrightText: 2017 Scott Shawcroft, written for Adafruit Industries 2 | 3 | SPDX-License-Identifier: MIT 4 | -------------------------------------------------------------------------------- /adafruit_sgp30.py: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2017 ladyada for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | """ 6 | `adafruit_sgp30` 7 | ==================================================== 8 | 9 | I2C driver for SGP30 Sensirion VoC sensor 10 | 11 | * Author(s): ladyada 12 | 13 | Implementation Notes 14 | -------------------- 15 | 16 | **Hardware:** 17 | 18 | * Adafruit `SGP30 Air Quality Sensor Breakout - VOC and eCO2 19 | `_ (Product ID: 3709) 20 | 21 | **Software and Dependencies:** 22 | 23 | * Adafruit CircuitPython firmware for the supported boards: 24 | https://github.com/adafruit/circuitpython/releases 25 | * Adafruit's Bus Device library: https://github.com/adafruit/Adafruit_CircuitPython_BusDevice 26 | """ 27 | 28 | import time 29 | from math import exp 30 | 31 | from adafruit_bus_device.i2c_device import I2CDevice 32 | from micropython import const 33 | 34 | try: 35 | from typing import List, Tuple 36 | 37 | from busio import I2C 38 | except ImportError: 39 | pass 40 | 41 | __version__ = "0.0.0+auto.0" 42 | __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_SGP30.git" 43 | 44 | 45 | _SGP30_DEFAULT_I2C_ADDR = const(0x58) 46 | _SGP30_FEATURESETS = (0x0020, 0x0022) 47 | 48 | _SGP30_CRC8_POLYNOMIAL = const(0x31) 49 | _SGP30_CRC8_INIT = const(0xFF) 50 | _SGP30_WORD_LEN = const(2) 51 | 52 | 53 | class Adafruit_SGP30: 54 | """ 55 | A driver for the SGP30 gas sensor. 56 | 57 | :param ~busio.I2C i2c: The I2C bus the SGP30 is connected to. 58 | :param int address: The I2C address of the device. Defaults to :const:`0x58` 59 | 60 | 61 | **Quickstart: Importing and using the SGP30 temperature sensor** 62 | 63 | Here is one way of importing the `Adafruit_SGP30` class so you 64 | can use it with the name ``sgp30``. 65 | First you will need to import the libraries to use the sensor 66 | 67 | .. code-block:: python 68 | 69 | import busio 70 | import board 71 | import adafruit_sgp30 72 | 73 | Once this is done you can define your `busio.I2C` object and define your sensor object 74 | 75 | .. code-block:: python 76 | 77 | i2c = busio.I2C(board.SCL, board.SDA, frequency=100000) 78 | sgp30 = adafruit_sgp30.Adafruit_SGP30(i2c) 79 | 80 | Now you have access to the Carbon Dioxide Equivalent baseline using the 81 | :attr:`baseline_eCO2` attribute and the Total Volatile Organic Compound 82 | baseline using the :attr:`baseline_TVOC` 83 | 84 | .. code-block:: python 85 | 86 | eCO2 = sgp30.baseline_eCO2 87 | TVOC = sgp30.baseline_TVOC 88 | 89 | 90 | """ 91 | 92 | def __init__(self, i2c: I2C, address: int = _SGP30_DEFAULT_I2C_ADDR) -> None: 93 | """Initialize the sensor, get the serial # and verify that we found a proper SGP30""" 94 | self._device = I2CDevice(i2c, address) 95 | 96 | # get unique serial, its 48 bits so we store in an array 97 | self.serial = self._i2c_read_words_from_cmd([0x36, 0x82], 0.01, 3) 98 | # get featureset 99 | featureset = self._i2c_read_words_from_cmd([0x20, 0x2F], 0.01, 1) 100 | if featureset[0] not in _SGP30_FEATURESETS: 101 | raise RuntimeError("SGP30 Not detected") 102 | self.iaq_init() 103 | 104 | @property 105 | def TVOC(self) -> int: 106 | """Total Volatile Organic Compound in parts per billion.""" 107 | return self.iaq_measure()[1] 108 | 109 | @property 110 | def baseline_TVOC(self) -> int: 111 | """Total Volatile Organic Compound baseline value""" 112 | return self.get_iaq_baseline()[1] 113 | 114 | @property 115 | def eCO2(self) -> int: 116 | """Carbon Dioxide Equivalent in parts per million""" 117 | return self.iaq_measure()[0] 118 | 119 | @property 120 | def baseline_eCO2(self) -> int: 121 | """Carbon Dioxide Equivalent baseline value""" 122 | return self.get_iaq_baseline()[0] 123 | 124 | @property 125 | def Ethanol(self) -> int: 126 | """Ethanol Raw Signal in ticks""" 127 | return self.raw_measure()[1] 128 | 129 | @property 130 | def H2(self) -> int: 131 | """H2 Raw Signal in ticks""" 132 | return self.raw_measure()[0] 133 | 134 | def iaq_init(self) -> List[int]: 135 | """Initialize the IAQ algorithm""" 136 | # name, command, signals, delay 137 | self._run_profile(("iaq_init", [0x20, 0x03], 0, 0.01)) 138 | 139 | def iaq_measure(self) -> List[int]: 140 | """Measure the eCO2 and TVOC""" 141 | # name, command, signals, delay 142 | return self._run_profile(("iaq_measure", [0x20, 0x08], 2, 0.05)) 143 | 144 | def raw_measure(self) -> List[int]: 145 | """Measure H2 and Ethanol (Raw Signals)""" 146 | # name, command, signals, delay 147 | return self._run_profile(("raw_measure", [0x20, 0x50], 2, 0.025)) 148 | 149 | def get_iaq_baseline(self) -> List[int]: 150 | """Retreive the IAQ algorithm baseline for eCO2 and TVOC""" 151 | # name, command, signals, delay 152 | return self._run_profile(("iaq_get_baseline", [0x20, 0x15], 2, 0.01)) 153 | 154 | def set_iaq_baseline(self, eCO2: int, TVOC: int) -> None: 155 | """Set the previously recorded IAQ algorithm baseline for eCO2 and TVOC""" 156 | if eCO2 == 0 and TVOC == 0: 157 | raise RuntimeError("Invalid baseline") 158 | buffer = [] 159 | for value in [TVOC, eCO2]: 160 | arr = [value >> 8, value & 0xFF] 161 | arr.append(self._generate_crc(arr)) 162 | buffer += arr 163 | self._run_profile(("iaq_set_baseline", [0x20, 0x1E] + buffer, 0, 0.01)) 164 | 165 | def set_iaq_humidity(self, gramsPM3: float) -> None: 166 | """Set the humidity in g/m3 for eCO2 and TVOC compensation algorithm""" 167 | tmp = int(gramsPM3 * 256) 168 | buffer = [] 169 | for value in [tmp]: 170 | arr = [value >> 8, value & 0xFF] 171 | arr.append(self._generate_crc(arr)) 172 | buffer += arr 173 | self._run_profile(("iaq_set_humidity", [0x20, 0x61] + buffer, 0, 0.01)) 174 | 175 | def set_iaq_relative_humidity(self, celsius: float, relative_humidity: float): 176 | """ 177 | Set the humidity in g/m3 for eCo2 and TVOC compensation algorithm. 178 | The absolute humidity is calculated from the temperature (Celsius) 179 | and relative humidity (as a percentage). 180 | """ 181 | numerator = ((relative_humidity / 100) * 6.112) * exp( 182 | (17.62 * celsius) / (243.12 + celsius) 183 | ) 184 | denominator = 273.15 + celsius 185 | 186 | humidity_grams_pm3 = 216.7 * (numerator / denominator) 187 | self.set_iaq_humidity(humidity_grams_pm3) 188 | 189 | # Low level command functions 190 | 191 | def _run_profile(self, profile: Tuple[str, List[int], int, float]) -> List[int]: 192 | """Run an SGP 'profile' which is a named command set""" 193 | name, command, signals, delay = profile # noqa: F841 194 | 195 | # print("\trunning profile: %s, command %s, %d, delay %0.02f" % 196 | # (name, ["0x%02x" % i for i in command], signals, delay)) 197 | return self._i2c_read_words_from_cmd(command, delay, signals) 198 | 199 | def _i2c_read_words_from_cmd( 200 | self, command: List[int], delay: float, reply_size: int 201 | ) -> List[int]: 202 | """Run an SGP command query, get a reply and CRC results if necessary""" 203 | with self._device: 204 | self._device.write(bytes(command)) 205 | time.sleep(delay) 206 | if not reply_size: 207 | return None 208 | crc_result = bytearray(reply_size * (_SGP30_WORD_LEN + 1)) 209 | self._device.readinto(crc_result) 210 | # print("\tRaw Read: ", crc_result) 211 | result = [] 212 | for i in range(reply_size): 213 | word = [crc_result[3 * i], crc_result[3 * i + 1]] 214 | crc = crc_result[3 * i + 2] 215 | if self._generate_crc(word) != crc: 216 | raise RuntimeError("CRC Error") 217 | result.append(word[0] << 8 | word[1]) 218 | # print("\tOK Data: ", [hex(i) for i in result]) 219 | return result 220 | 221 | def _generate_crc(self, data: bytearray) -> int: # noqa: PLR6301 222 | """8-bit CRC algorithm for checking data""" 223 | crc = _SGP30_CRC8_INIT 224 | # calculates 8-Bit checksum with given polynomial 225 | for byte in data: 226 | crc ^= byte 227 | for _ in range(8): 228 | if crc & 0x80: 229 | crc = (crc << 1) ^ _SGP30_CRC8_POLYNOMIAL 230 | else: 231 | crc <<= 1 232 | return crc & 0xFF 233 | -------------------------------------------------------------------------------- /docs/_static/favicon.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/adafruit/Adafruit_CircuitPython_SGP30/20996bd7eb7acbfdbaf08bdb6c61cdb2a3fc2acd/docs/_static/favicon.ico -------------------------------------------------------------------------------- /docs/_static/favicon.ico.license: -------------------------------------------------------------------------------- 1 | SPDX-FileCopyrightText: 2018 Phillip Torrone for Adafruit Industries 2 | 3 | SPDX-License-Identifier: CC-BY-4.0 4 | -------------------------------------------------------------------------------- /docs/api.rst: -------------------------------------------------------------------------------- 1 | 2 | .. If you created a package, create one automodule per module in the package. 3 | 4 | API Reference 5 | ############# 6 | 7 | .. automodule:: adafruit_sgp30 8 | :members: 9 | -------------------------------------------------------------------------------- /docs/api.rst.license: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2020 ladyada for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | -------------------------------------------------------------------------------- /docs/conf.py: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | import datetime 6 | import os 7 | import sys 8 | 9 | sys.path.insert(0, os.path.abspath("..")) 10 | 11 | # -- General configuration ------------------------------------------------ 12 | 13 | # Add any Sphinx extension module names here, as strings. They can be 14 | # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom 15 | # ones. 16 | extensions = [ 17 | "sphinx.ext.autodoc", 18 | "sphinxcontrib.jquery", 19 | "sphinx.ext.intersphinx", 20 | "sphinx.ext.viewcode", 21 | ] 22 | 23 | # Uncomment the below if you use native CircuitPython modules such as 24 | # digitalio, micropython and busio. List the modules you use. Without it, the 25 | # autodoc module docs will fail to generate with a warning. 26 | # autodoc_mock_imports = ["adafruit_bus_device", "micropython"] 27 | 28 | intersphinx_mapping = { 29 | "python": ("https://docs.python.org/3", None), 30 | "BusDevice": ( 31 | "https://docs.circuitpython.org/projects/busdevice/en/latest/", 32 | None, 33 | ), 34 | "CircuitPython": ("https://docs.circuitpython.org/en/latest/", None), 35 | } 36 | 37 | # Add any paths that contain templates here, relative to this directory. 38 | templates_path = ["_templates"] 39 | 40 | source_suffix = ".rst" 41 | 42 | # The master toctree document. 43 | master_doc = "index" 44 | 45 | # General information about the project. 46 | project = "Adafruit sgp30 Library" 47 | creation_year = "2017" 48 | current_year = str(datetime.datetime.now().year) 49 | year_duration = ( 50 | current_year if current_year == creation_year else creation_year + " - " + current_year 51 | ) 52 | copyright = year_duration + " Ladyada" 53 | author = "Ladyada" 54 | 55 | # The version info for the project you're documenting, acts as replacement for 56 | # |version| and |release|, also used in various other places throughout the 57 | # built documents. 58 | # 59 | # The short X.Y version. 60 | version = "1.0" 61 | # The full version, including alpha/beta/rc tags. 62 | release = "1.0" 63 | 64 | # The language for content autogenerated by Sphinx. Refer to documentation 65 | # for a list of supported languages. 66 | # 67 | # This is also used if you do content translation via gettext catalogs. 68 | # Usually you set "language" from the command line for these cases. 69 | language = "en" 70 | 71 | # List of patterns, relative to source directory, that match files and 72 | # directories to ignore when looking for source files. 73 | # This patterns also effect to html_static_path and html_extra_path 74 | exclude_patterns = ["_build", "Thumbs.db", ".DS_Store", ".env", "CODE_OF_CONDUCT.md"] 75 | 76 | # The reST default role (used for this markup: `text`) to use for all 77 | # documents. 78 | # 79 | default_role = "any" 80 | 81 | # If true, '()' will be appended to :func: etc. cross-reference text. 82 | # 83 | add_function_parentheses = True 84 | 85 | # The name of the Pygments (syntax highlighting) style to use. 86 | pygments_style = "sphinx" 87 | 88 | # If true, `todo` and `todoList` produce output, else they produce nothing. 89 | todo_include_todos = False 90 | 91 | # If this is True, todo emits a warning for each TODO entries. The default is False. 92 | todo_emit_warnings = True 93 | 94 | 95 | # -- Options for HTML output ---------------------------------------------- 96 | 97 | # The theme to use for HTML and HTML Help pages. See the documentation for 98 | # a list of builtin themes. 99 | # 100 | import sphinx_rtd_theme 101 | 102 | html_theme = "sphinx_rtd_theme" 103 | 104 | # Add any paths that contain custom static files (such as style sheets) here, 105 | # relative to this directory. They are copied after the builtin static files, 106 | # so a file named "default.css" will overwrite the builtin "default.css". 107 | html_static_path = ["_static"] 108 | 109 | # The name of an image file (relative to this directory) to use as a favicon of 110 | # the docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32 111 | # pixels large. 112 | # 113 | html_favicon = "_static/favicon.ico" 114 | 115 | # Output file base name for HTML help builder. 116 | htmlhelp_basename = "AdafruitSgp30Librarydoc" 117 | 118 | # -- Options for LaTeX output --------------------------------------------- 119 | 120 | latex_elements = { 121 | # The paper size ('letterpaper' or 'a4paper'). 122 | # 123 | # 'papersize': 'letterpaper', 124 | # The font size ('10pt', '11pt' or '12pt'). 125 | # 126 | # 'pointsize': '10pt', 127 | # Additional stuff for the LaTeX preamble. 128 | # 129 | # 'preamble': '', 130 | # Latex figure (float) alignment 131 | # 132 | # 'figure_align': 'htbp', 133 | } 134 | 135 | # Grouping the document tree into LaTeX files. List of tuples 136 | # (source start file, target name, title, 137 | # author, documentclass [howto, manual, or own class]). 138 | latex_documents = [ 139 | ( 140 | master_doc, 141 | "Adafruitsgp30Library.tex", 142 | "Adafruitsgp30 Library Documentation", 143 | author, 144 | "manual", 145 | ), 146 | ] 147 | 148 | # -- Options for manual page output --------------------------------------- 149 | 150 | # One entry per manual page. List of tuples 151 | # (source start file, name, description, authors, manual section). 152 | man_pages = [ 153 | ( 154 | master_doc, 155 | "Adafruitsgp30library", 156 | "Adafruit sgp30 Library Documentation", 157 | [author], 158 | 1, 159 | ) 160 | ] 161 | 162 | # -- Options for Texinfo output ------------------------------------------- 163 | 164 | # Grouping the document tree into Texinfo files. List of tuples 165 | # (source start file, target name, title, author, 166 | # dir menu entry, description, category) 167 | texinfo_documents = [ 168 | ( 169 | master_doc, 170 | "Adafruitsgp30Library", 171 | "Adafruit sgp30 Library Documentation", 172 | author, 173 | "Adafruitsgp30Library", 174 | "One line description of project.", 175 | "Miscellaneous", 176 | ), 177 | ] 178 | -------------------------------------------------------------------------------- /docs/examples.rst: -------------------------------------------------------------------------------- 1 | Simple test 2 | ------------ 3 | 4 | Ensure your device works with this simple test. 5 | 6 | .. literalinclude:: ../examples/sgp30_simpletest.py 7 | :caption: examples/sgp30_simpletest.py 8 | :linenos: 9 | -------------------------------------------------------------------------------- /docs/examples.rst.license: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2020 ladyada for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | -------------------------------------------------------------------------------- /docs/index.rst: -------------------------------------------------------------------------------- 1 | .. include:: ../README.rst 2 | 3 | Table of Contents 4 | ================= 5 | 6 | .. toctree:: 7 | :maxdepth: 4 8 | :hidden: 9 | 10 | self 11 | 12 | .. toctree:: 13 | :caption: Examples 14 | 15 | examples 16 | 17 | .. toctree:: 18 | :caption: API Reference 19 | :maxdepth: 3 20 | 21 | api 22 | 23 | .. toctree:: 24 | :caption: Tutorials 25 | 26 | .. toctree:: 27 | :caption: Related Products 28 | 29 | Adafruit SGP30 Air Quality Sensor Breakout - VOC and eCO2 30 | 31 | .. toctree:: 32 | :caption: Other Links 33 | 34 | Download from GitHub 35 | Download Library Bundle 36 | CircuitPython Reference Documentation 37 | CircuitPython Support Forum 38 | Discord Chat 39 | Adafruit Learning System 40 | Adafruit Blog 41 | Adafruit Store 42 | 43 | Indices and tables 44 | ================== 45 | 46 | * :ref:`genindex` 47 | * :ref:`modindex` 48 | * :ref:`search` 49 | -------------------------------------------------------------------------------- /docs/index.rst.license: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2020 ladyada for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | -------------------------------------------------------------------------------- /docs/requirements.txt: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: Unlicense 4 | 5 | sphinx 6 | sphinxcontrib-jquery 7 | sphinx-rtd-theme 8 | -------------------------------------------------------------------------------- /examples/sgp30_simpletest.py: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries 2 | # SPDX-License-Identifier: MIT 3 | 4 | """Example for using the SGP30 with CircuitPython and the Adafruit library""" 5 | 6 | import time 7 | 8 | import board 9 | import busio 10 | 11 | import adafruit_sgp30 12 | 13 | i2c = busio.I2C(board.SCL, board.SDA, frequency=100000) 14 | 15 | # Create library object on our I2C port 16 | sgp30 = adafruit_sgp30.Adafruit_SGP30(i2c) 17 | 18 | print("SGP30 serial #", [hex(i) for i in sgp30.serial]) 19 | 20 | sgp30.set_iaq_baseline(0x8973, 0x8AAE) 21 | sgp30.set_iaq_relative_humidity(celsius=22.1, relative_humidity=44) 22 | 23 | elapsed_sec = 0 24 | 25 | while True: 26 | print(f"eCO2 = {sgp30.eCO2} ppm \t TVOC = {sgp30.TVOC} ppb") 27 | time.sleep(1) 28 | elapsed_sec += 1 29 | if elapsed_sec > 10: 30 | elapsed_sec = 0 31 | print( 32 | f"**** Baseline values: eCO2 = 0x{sgp30.baseline_eCO2:x}, TVOC = 0x{sgp30.baseline_TVOC:x}" # noqa: E501 33 | ) 34 | -------------------------------------------------------------------------------- /optional_requirements.txt: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2022 Alec Delaney, for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: Unlicense 4 | -------------------------------------------------------------------------------- /pyproject.toml: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2022 Alec Delaney for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | [build-system] 6 | requires = [ 7 | "setuptools", 8 | "wheel", 9 | "setuptools-scm", 10 | ] 11 | 12 | [project] 13 | name = "adafruit-circuitpython-sgp30" 14 | description = "CircuitPython library for Sensirion SGP30 gas sensor with eCO2 and TVOC." 15 | version = "0.0.0+auto.0" 16 | readme = "README.rst" 17 | authors = [ 18 | {name = "Adafruit Industries", email = "circuitpython@adafruit.com"} 19 | ] 20 | urls = {Homepage = "https://github.com/adafruit/Adafruit_CircuitPython_SGP30"} 21 | keywords = [ 22 | "adafruit", 23 | "sensiron", 24 | "sgp30", 25 | "gas", 26 | "sensor", 27 | "eco2", 28 | "tvoc", 29 | "h2", 30 | "ethanol", 31 | "i2c", 32 | "hardware", 33 | "micropython", 34 | "circuitpython", 35 | ] 36 | license = {text = "MIT"} 37 | classifiers = [ 38 | "Intended Audience :: Developers", 39 | "Topic :: Software Development :: Libraries", 40 | "Topic :: Software Development :: Embedded Systems", 41 | "Topic :: System :: Hardware", 42 | "License :: OSI Approved :: MIT License", 43 | "Programming Language :: Python :: 3", 44 | ] 45 | dynamic = ["dependencies", "optional-dependencies"] 46 | 47 | [tool.setuptools] 48 | py-modules = ["adafruit_sgp30"] 49 | 50 | [tool.setuptools.dynamic] 51 | dependencies = {file = ["requirements.txt"]} 52 | optional-dependencies = {optional = {file = ["optional_requirements.txt"]}} 53 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2022 Alec Delaney, for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: Unlicense 4 | 5 | Adafruit-Blinka 6 | adafruit-circuitpython-busdevice 7 | -------------------------------------------------------------------------------- /ruff.toml: -------------------------------------------------------------------------------- 1 | # SPDX-FileCopyrightText: 2024 Tim Cocks for Adafruit Industries 2 | # 3 | # SPDX-License-Identifier: MIT 4 | 5 | target-version = "py38" 6 | line-length = 100 7 | 8 | [lint] 9 | preview = true 10 | select = ["I", "PL", "UP"] 11 | 12 | extend-select = [ 13 | "D419", # empty-docstring 14 | "E501", # line-too-long 15 | "W291", # trailing-whitespace 16 | "PLC0414", # useless-import-alias 17 | "PLC2401", # non-ascii-name 18 | "PLC2801", # unnecessary-dunder-call 19 | "PLC3002", # unnecessary-direct-lambda-call 20 | "E999", # syntax-error 21 | "PLE0101", # return-in-init 22 | "F706", # return-outside-function 23 | "F704", # yield-outside-function 24 | "PLE0116", # continue-in-finally 25 | "PLE0117", # nonlocal-without-binding 26 | "PLE0241", # duplicate-bases 27 | "PLE0302", # unexpected-special-method-signature 28 | "PLE0604", # invalid-all-object 29 | "PLE0605", # invalid-all-format 30 | "PLE0643", # potential-index-error 31 | "PLE0704", # misplaced-bare-raise 32 | "PLE1141", # dict-iter-missing-items 33 | "PLE1142", # await-outside-async 34 | "PLE1205", # logging-too-many-args 35 | "PLE1206", # logging-too-few-args 36 | "PLE1307", # bad-string-format-type 37 | "PLE1310", # bad-str-strip-call 38 | "PLE1507", # invalid-envvar-value 39 | "PLE2502", # bidirectional-unicode 40 | "PLE2510", # invalid-character-backspace 41 | "PLE2512", # invalid-character-sub 42 | "PLE2513", # invalid-character-esc 43 | "PLE2514", # invalid-character-nul 44 | "PLE2515", # invalid-character-zero-width-space 45 | "PLR0124", # comparison-with-itself 46 | "PLR0202", # no-classmethod-decorator 47 | "PLR0203", # no-staticmethod-decorator 48 | "UP004", # useless-object-inheritance 49 | "PLR0206", # property-with-parameters 50 | "PLR0904", # too-many-public-methods 51 | "PLR0911", # too-many-return-statements 52 | "PLR0912", # too-many-branches 53 | "PLR0913", # too-many-arguments 54 | "PLR0914", # too-many-locals 55 | "PLR0915", # too-many-statements 56 | "PLR0916", # too-many-boolean-expressions 57 | "PLR1702", # too-many-nested-blocks 58 | "PLR1704", # redefined-argument-from-local 59 | "PLR1711", # useless-return 60 | "C416", # unnecessary-comprehension 61 | "PLR1733", # unnecessary-dict-index-lookup 62 | "PLR1736", # unnecessary-list-index-lookup 63 | 64 | # ruff reports this rule is unstable 65 | #"PLR6301", # no-self-use 66 | 67 | "PLW0108", # unnecessary-lambda 68 | "PLW0120", # useless-else-on-loop 69 | "PLW0127", # self-assigning-variable 70 | "PLW0129", # assert-on-string-literal 71 | "B033", # duplicate-value 72 | "PLW0131", # named-expr-without-context 73 | "PLW0245", # super-without-brackets 74 | "PLW0406", # import-self 75 | "PLW0602", # global-variable-not-assigned 76 | "PLW0603", # global-statement 77 | "PLW0604", # global-at-module-level 78 | 79 | # fails on the try: import typing used by libraries 80 | #"F401", # unused-import 81 | 82 | "F841", # unused-variable 83 | "E722", # bare-except 84 | "PLW0711", # binary-op-exception 85 | "PLW1501", # bad-open-mode 86 | "PLW1508", # invalid-envvar-default 87 | "PLW1509", # subprocess-popen-preexec-fn 88 | "PLW2101", # useless-with-lock 89 | "PLW3301", # nested-min-max 90 | ] 91 | 92 | ignore = [ 93 | "PLR2004", # magic-value-comparison 94 | "UP030", # format literals 95 | "PLW1514", # unspecified-encoding 96 | "PLR0913", # too-many-arguments 97 | "PLR0915", # too-many-statements 98 | "PLR0917", # too-many-positional-arguments 99 | "PLR0904", # too-many-public-methods 100 | "PLR0912", # too-many-branches 101 | "PLR0916", # too-many-boolean-expressions 102 | ] 103 | 104 | [format] 105 | line-ending = "lf" 106 | --------------------------------------------------------------------------------