Fixed discord invite link

Add UART support

.github/workflows/build.yml

@@ -0,0 +1,57 @@
+name: Build CI
+
+on: [pull_request, push]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Dump GitHub context
+      env:
+        GITHUB_CONTEXT: ${{ toJson(github) }}
+      run: echo "$GITHUB_CONTEXT"
+    - name: Translate Repo Name For Build Tools filename_prefix
+      id: repo-name
+      run: |
+        echo ::set-output name=repo-name::$(
+        echo ${{ github.repository }} |
+        awk -F '\/' '{ print tolower($2) }' |
+        tr '_' '-'
+        )
+    - name: Set up Python 3.6
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.6
+    - name: Versions
+      run: |
+        python3 --version
+    - name: Checkout Current Repo
+      uses: actions/checkout@v1
+      with:
+        submodules: true
+    - name: Checkout tools repo
+      uses: actions/checkout@v2
+      with:
+        repository: adafruit/actions-ci-circuitpython-libs
+        path: actions-ci
+    - name: Install dependencies
+      # (e.g. - apt-get: gettext, etc; pip: circuitpython-build-tools, requirements.txt; etc.)
+      run: |
+        source actions-ci/install.sh
+    - name: Pip install pylint, black, & Sphinx
+      run: |
+        pip install --force-reinstall pylint black==19.10b0 Sphinx sphinx-rtd-theme
+    - name: Library version
+      run: git describe --dirty --always --tags
+    - name: Check formatting
+      run: |
+        black --check --target-version=py35 .
+    - name: PyLint
+      run: |
+        pylint $( find . -path './adafruit*.py' )
+        ([[ ! -d "examples" ]] || pylint --disable=missing-docstring,invalid-name,bad-whitespace $( find . -path "./examples/*.py" ))
+    - name: Build assets
+      run: circuitpython-build-bundles --filename_prefix ${{ steps.repo-name.outputs.repo-name }} --library_location .
+    - name: Build docs
+      working-directory: docs
+      run: sphinx-build -E -W -b html . _build/html

.github/workflows/release.yml

@@ -0,0 +1,81 @@
+name: Release Actions
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  upload-release-assets:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Dump GitHub context
+      env:
+        GITHUB_CONTEXT: ${{ toJson(github) }}
+      run: echo "$GITHUB_CONTEXT"
+    - name: Translate Repo Name For Build Tools filename_prefix
+      id: repo-name
+      run: |
+        echo ::set-output name=repo-name::$(
+        echo ${{ github.repository }} |
+        awk -F '\/' '{ print tolower($2) }' |
+        tr '_' '-'
+        )
+    - name: Set up Python 3.6
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.6
+    - name: Versions
+      run: |
+        python3 --version
+    - name: Checkout Current Repo
+      uses: actions/checkout@v1
+      with:
+        submodules: true
+    - name: Checkout tools repo
+      uses: actions/checkout@v2
+      with:
+        repository: adafruit/actions-ci-circuitpython-libs
+        path: actions-ci
+    - name: Install deps
+      run: |
+        source actions-ci/install.sh
+    - name: Build assets
+      run: circuitpython-build-bundles --filename_prefix ${{ steps.repo-name.outputs.repo-name }} --library_location .
+    - name: Upload Release Assets
+      # the 'official' actions version does not yet support dynamically
+      # supplying asset names to upload. @csexton's version chosen based on
+      # discussion in the issue below, as its the simplest to implement and
+      # allows for selecting files with a pattern.
+      # https://github.com/actions/upload-release-asset/issues/4
+      #uses: actions/upload-release-asset@v1.0.1
+      uses: csexton/release-asset-action@master
+      with:
+        pattern: "bundles/*"
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+
+  upload-pypi:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Check For setup.py
+      id: need-pypi
+      run: |
+        echo ::set-output name=setup-py::$( find . -wholename './setup.py' )
+    - name: Set up Python
+      if: contains(steps.need-pypi.outputs.setup-py, 'setup.py')
+      uses: actions/setup-python@v1
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      if: contains(steps.need-pypi.outputs.setup-py, 'setup.py')
+      run: |
+        python -m pip install --upgrade pip
+        pip install setuptools wheel twine
+    - name: Build and publish
+      if: contains(steps.need-pypi.outputs.setup-py, 'setup.py')
+      env:
+        TWINE_USERNAME: ${{ secrets.pypi_username }}
+        TWINE_PASSWORD: ${{ secrets.pypi_password }}
+      run: |
+        python setup.py sdist
+        twine upload dist/*

.gitignore

@@ -1,6 +1,11 @@
+*.mpy
+.idea
 __pycache__
 _build
 *.pyc
 .env
-build*
 bundles
+*.DS_Store
+.eggs
+dist
+**/*.egg-info

.pylintrc

@@ -52,7 +52,7 @@ confidence=
 # no Warning level messages displayed, use"--disable=all --enable=classes
 # --disable=W"
 # disable=import-error,print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call
-disable=print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call,import-error
+disable=print-statement,parameter-unpacking,unpacking-in-except,old-raise-syntax,backtick,long-suffix,old-ne-operator,old-octal-literal,import-star-module-level,raw-checker-failed,bad-inline-option,locally-disabled,locally-enabled,file-ignored,suppressed-message,useless-suppression,deprecated-pragma,apply-builtin,basestring-builtin,buffer-builtin,cmp-builtin,coerce-builtin,execfile-builtin,file-builtin,long-builtin,raw_input-builtin,reduce-builtin,standarderror-builtin,unicode-builtin,xrange-builtin,coerce-method,delslice-method,getslice-method,setslice-method,no-absolute-import,old-division,dict-iter-method,dict-view-method,next-method-called,metaclass-assignment,indexing-exception,raising-string,reload-builtin,oct-method,hex-method,nonzero-method,cmp-method,input-builtin,round-builtin,intern-builtin,unichr-builtin,map-builtin-not-iterating,zip-builtin-not-iterating,range-builtin-not-iterating,filter-builtin-not-iterating,using-cmp-argument,eq-without-hash,div-method,idiv-method,rdiv-method,exception-message-attribute,invalid-str-codec,sys-max-int,bad-python3-import,deprecated-string-function,deprecated-str-translate-call,import-error,bad-continuation
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option
@@ -156,7 +156,7 @@ ignored-classes=optparse.Values,thread._local,_thread._local
 # (useful for modules/projects where namespaces are manipulated during runtime
 # and thus existing member attributes cannot be deduced by static analysis. It
 # supports qualified module names, as well as Unix pattern matching.
-ignored-modules=
+ignored-modules=board
 
 # Show a hint with possible names when a member name was not found. The aspect
 # of finding the hint is based on edit distance.

.travis.yml

@@ -1,32 +0,0 @@
-# This is a common .travis.yml for generating library release zip files for
-# CircuitPython library releases using circuitpython-build-tools.
-# See https://github.com/adafruit/circuitpython-build-tools for detailed setup
-# instructions.
-
-dist: trusty
-sudo: false
-language: python
-python:
-    - "3.6"
-
-cache:
-    pip: true
-
-deploy:
-  provider: releases
-  api_key: $GITHUB_TOKEN
-  file_glob: true
-  file: $TRAVIS_BUILD_DIR/bundles/*
-  skip_cleanup: true
-  overwrite: true
-  on:
-    tags: true
-
-install:
-  - pip install pylint circuitpython-build-tools Sphinx sphinx-rtd-theme
-
-script:
-  - pylint adafruit_as726x.py
-  - ([[ ! -d "examples" ]] || pylint --disable=missing-docstring,invalid-name,bad-whitespace examples/*.py)
-  - circuitpython-build-bundles --filename_prefix adafruit-circuitpython-as726x --library_location .
-  - cd docs && sphinx-build -E -W -b html . _build/html

CODE_OF_CONDUCT.md

@@ -1,74 +1,129 @@
-# Contributor Covenant Code of Conduct
+# Adafruit Community Code of Conduct
 
 ## Our Pledge
 
 In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to making participation in our project and
+contributors and leaders pledge to making participation in our project and
 our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, gender identity and expression, level of experience,
-nationality, personal appearance, race, religion, or sexual identity and
-orientation.
+size, disability, ethnicity, gender identity and expression, level or type of
+experience, education, socio-economic status, nationality, personal appearance,
+race, religion, or sexual identity and orientation.
 
 ## Our Standards
 
+We are committed to providing a friendly, safe and welcoming environment for
+all.
+
 Examples of behavior that contributes to creating a positive environment
 include:
 
+* Be kind and courteous to others
 * Using welcoming and inclusive language
 * Being respectful of differing viewpoints and experiences
+* Collaborating with other community members
 * Gracefully accepting constructive criticism
 * Focusing on what is best for the community
 * Showing empathy towards other community members
 
 Examples of unacceptable behavior by participants include:
 
-* The use of sexualized language or imagery and unwelcome sexual attention or
-advances
+* The use of sexualized language or imagery and sexual attention or advances
+* The use of inappropriate images, including in a community member's avatar
+* The use of inappropriate language, including in a community member's nickname
+* Any spamming, flaming, baiting or other attention-stealing behavior
+* Excessive or unwelcome helping; answering outside the scope of the question
+  asked
 * Trolling, insulting/derogatory comments, and personal or political attacks
+* Promoting or spreading disinformation, lies, or conspiracy theories against
+  a person, group, organisation, project, or community
 * Public or private harassment
 * Publishing others' private information, such as a physical or electronic
   address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
+* Other conduct which could reasonably be considered inappropriate
+
+The goal of the standards and moderation guidelines outlined here is to build
+and maintain a respectful community. We ask that you don’t just aim to be
+"technically unimpeachable", but rather try to be your best self. 
+
+We value many things beyond technical expertise, including collaboration and
+supporting others within our community. Providing a positive experience for
+other community members can have a much more significant impact than simply
+providing the correct answer.
 
 ## Our Responsibilities
 
-Project maintainers are responsible for clarifying the standards of acceptable
+Project leaders are responsible for clarifying the standards of acceptable
 behavior and are expected to take appropriate and fair corrective action in
 response to any instances of unacceptable behavior.
 
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
+Project leaders have the right and responsibility to remove, edit, or
+reject messages, comments, commits, code, issues, and other contributions
 that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
+permanently any community member for other behaviors that they deem
+inappropriate, threatening, offensive, or harmful.
+
+## Moderation
+
+Instances of behaviors that violate the Adafruit Community Code of Conduct
+may be reported by any member of the community. Community members are
+encouraged to report these situations, including situations they witness
+involving other community members.
+
+You may report in the following ways:
+
+In any situation, you may send an email to <support@adafruit.com>.
+
+On the Adafruit Discord, you may send an open message from any channel
+to all Community Moderators by tagging @community moderators. You may 
+also send an open message from any channel, or a direct message to 
+@kattni#1507, @tannewt#4653, @Dan Halbert#1614, @cater#2442, 
+@sommersoft#0222, @Mr. Certainly#0472 or @Andon#8175.
+
+Email and direct message reports will be kept confidential.
+
+In situations on Discord where the issue is particularly egregious, possibly
+illegal, requires immediate action, or violates the Discord terms of service,
+you should also report the message directly to Discord.
+
+These are the steps for upholding our community’s standards of conduct.
+
+1. Any member of the community may report any situation that violates the
+Adafruit Community Code of Conduct. All reports will be reviewed and
+investigated.
+2. If the behavior is an egregious violation, the community member who
+committed the violation may be banned immediately, without warning.
+3. Otherwise, moderators will first respond to such behavior with a warning.
+4. Moderators follow a soft "three strikes" policy - the community member may
+be given another chance, if they are receptive to the warning and change their
+behavior.
+5. If the community member is unreceptive or unreasonable when warned by a
+moderator, or the warning goes unheeded, they may be banned for a first or
+second offense. Repeated offenses will result in the community member being
+banned.
 
 ## Scope
 
+This Code of Conduct and the enforcement policies listed above apply to all
+Adafruit Community venues. This includes but is not limited to any community
+spaces (both public and private), the entire Adafruit Discord server, and
+Adafruit GitHub repositories. Examples of Adafruit Community spaces include
+but are not limited to meet-ups, audio chats on the Adafruit Discord, or
+interaction at a conference.
+
 This Code of Conduct applies both within project spaces and in public spaces
-when an individual is representing the project or its community. Examples of
-representing a project or community include using an official project e-mail
-address, posting via an official social media account, or acting as an appointed
-representative at an online or offline event. Representation of a project may be
-further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at support@adafruit.com. All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. The project team is
-obligated to maintain confidentiality with regard to the reporter of an incident.
-Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
+when an individual is representing the project or its community. As a community
+member, you are representing our community, and are expected to behave
+accordingly.
 
 ## Attribution
 
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at [http://contributor-covenant.org/version/1/4][version]
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 1.4, available at
+<https://www.contributor-covenant.org/version/1/4/code-of-conduct.html>,
+and the [Rust Code of Conduct](https://www.rust-lang.org/en-US/conduct.html).
 
-[homepage]: http://contributor-covenant.org
-[version]: http://contributor-covenant.org/version/1/4/
+For other projects adopting the Adafruit Community Code of
+Conduct, please contact the maintainers of those projects for enforcement.
+If you wish to use this code of conduct for your own project, consider
+explicitly mentioning your moderation policy or making a copy with your
+own moderation policy so as to avoid confusion.

README.rst

@@ -6,17 +6,18 @@ Introduction
     :alt: Documentation Status
 
 .. image:: https://img.shields.io/discord/327254708534116352.svg
-    :target: https://discord.gg/nBQh6qu
+    :target: https://adafru.it/discord
     :alt: Discord
 
-.. image:: https://travis-ci.org/adafruit/Adafruit_CircuitPython_AS726x.svg?branch=master
-    :target: https://travis-ci.org/adafruit/Adafruit_CircuitPython_AS726x
+.. image:: https://github.com/adafruit/Adafruit_CircuitPython_AS726x/workflows/Build%20CI/badge.svg
+    :target: https://github.com/adafruit/Adafruit_CircuitPython_AS726x/actions/
     :alt: Build Status
 
 Driver for the AS726x spectral sensors
 
-Dependencies
-=============
+Installation and Dependencies
+=============================
+
 This driver depends on:
 
 * `Adafruit CircuitPython <https://github.com/adafruit/circuitpython>`_
@@ -27,6 +28,32 @@ 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-as726x/>`_. To install for
+current user:
+
+.. code-block:: shell
+
+    pip3 install adafruit-circuitpython-as726x
+
+To install system-wide (this may be required in some cases:
+
+.. code-block:: shell
+
+    sudo pip3 install adafruit-circuitpython-as726x
+
+To install in a virtual environment in your current project:
+
+.. code-block:: shell
+
+    mkdir project-name && cd project-name
+    python3 -m venv .env
+    source .env/bin/activate
+    pip3 install adafruit-circuitpython-as726x
+
 Contributing
 ============
 
@@ -34,52 +61,7 @@ Contributions are welcome! Please read our `Code of Conduct
 <https://github.com/adafruit/adafruit_CircuitPython_AS726x/blob/master/CODE_OF_CONDUCT.md>`_
 before contributing to help this project stay welcoming.
 
-Building locally
-================
+Documentation
+=============
 
-Zip release files
------------------
-
-To build this library locally you'll need to install the
-`circuitpython-build-tools <https://github.com/adafruit/circuitpython-build-tools>`_ package.
-
-.. code-block:: shell
-
-    python3 -m venv .env
-    source .env/bin/activate
-    pip install circuitpython-build-tools
-
-Once installed, make sure you are in the virtual environment:
-
-.. code-block:: shell
-
-    source .env/bin/activate
-
-Then run the build:
-
-.. code-block:: shell
-
-    circuitpython-build-bundles --filename_prefix adafruit-circuitpython-as726x --library_location .
-
-Sphinx documentation
------------------------
-
-Sphinx is used to build the documentation based on rST files and comments in the code. First,
-install dependencies (feel free to reuse the virtual environment from above):
-
-.. code-block:: shell
-
-    python3 -m venv .env
-    source .env/bin/activate
-    pip install Sphinx sphinx-rtd-theme
-
-Now, once you have the virtual environment activated:
-
-.. code-block:: shell
-
-    cd docs
-    sphinx-build -E -W -b html . _build/html
-
-This will output the documentation to ``docs/_build/html``. Open the index.html in your browser to
-view them. It will also (due to -W) error out on any warning like Travis will. This is a good way to
-locally verify it will pass.
+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>`_.

adafruit_as726x.py

@@ -92,12 +92,33 @@ _AS7262_RED_CALIBRATED = const(0x28)
 
 _AS726X_NUM_CHANNELS = const(6)
 
+_COLOR_REGS = (
+    _AS7262_VIOLET,
+    _AS7262_BLUE,
+    _AS7262_GREEN,
+    _AS7262_YELLOW,
+    _AS7262_ORANGE,
+    _AS7262_RED,
+)
+_COLOR_REGS_CALIBRATED = (
+    _AS7262_VIOLET_CALIBRATED,
+    _AS7262_BLUE_CALIBRATED,
+    _AS7262_GREEN_CALIBRATED,
+    _AS7262_YELLOW_CALIBRATED,
+    _AS7262_ORANGE_CALIBRATED,
+    _AS7262_RED_CALIBRATED,
+)
+
 # pylint: disable=too-many-instance-attributes
 # pylint: disable=too-many-public-methods
-class Adafruit_AS726x(object):
-    """AS726x spectral sensor.
+# pylint: disable=invalid-name
+# pylint: disable=no-else-return
+# pylint: disable=inconsistent-return-statements
+
+
+class AS726x:
+    """AS726x spectral sensor base class.
 
-       :param ~busio.I2C i2c_bus: The I2C bus connected to the sensor
        """
 
     MODE_0 = 0b00
@@ -120,18 +141,16 @@ class Adafruit_AS726x(object):
 
     DRIVER_CURRENT_LIMITS = (12.5, 25, 50, 100)
 
-    def __init__(self, i2c_bus):
+    def __init__(self):
         self._driver_led = False
         self._indicator_led = False
-        self._driver_led_current = Adafruit_AS726x.DRIVER_CURRENT_LIMITS.index(12.5)
-        self._indicator_led_current = Adafruit_AS726x.INDICATOR_CURRENT_LIMITS.index(1)
-        self._conversion_mode = Adafruit_AS726x.MODE_2
+        self._driver_led_current = AS726x.DRIVER_CURRENT_LIMITS.index(12.5)
+        self._indicator_led_current = AS726x.INDICATOR_CURRENT_LIMITS.index(1)
+        self._conversion_mode = AS726x.MODE_2
         self._integration_time = 0
-        self._gain = Adafruit_AS726x.GAIN.index(1)
+        self._gain = AS726x.GAIN.index(1)
         self.buf2 = bytearray(2)
 
-        self.i2c_device = I2CDevice(i2c_bus, _AS726X_ADDRESS)
-
         # reset device
         self._virtual_write(_AS726X_CONTROL_SETUP, 0x80)
 
@@ -143,10 +162,12 @@ class Adafruit_AS726x(object):
 
         # TODO: add support for other devices
         if version != 0x40:
-            raise ValueError("device could not be reached or this device is not supported!")
+            raise ValueError(
+                "device could not be reached or this device is not supported!"
+            )
 
         self.integration_time = 140
-        self.conversion_mode = Adafruit_AS726x.MODE_2
+        self.conversion_mode = AS726x.MODE_2
         self.gain = 64
 
     @property
@@ -191,14 +212,14 @@ class Adafruit_AS726x(object):
 
     @driver_led_current.setter
     def driver_led_current(self, val):
-        if val not in Adafruit_AS726x.DRIVER_CURRENT_LIMITS:
+        if val not in AS726x.DRIVER_CURRENT_LIMITS:
             raise ValueError("Must be 12.5, 25, 50 or 100")
         if self._driver_led_current == val:
             return
         self._driver_led_current = val
         state = self._virtual_read(_AS726X_LED_CONTROL)
         state &= ~(0x3 << 4)
-        state = state | (Adafruit_AS726x.DRIVER_CURRENT_LIMITS.index(val) << 4)
+        state = state | (AS726x.DRIVER_CURRENT_LIMITS.index(val) << 4)
         self._virtual_write(_AS726X_LED_CONTROL, state)
 
     @property
@@ -213,14 +234,14 @@ class Adafruit_AS726x(object):
 
     @indicator_led_current.setter
     def indicator_led_current(self, val):
-        if val not in Adafruit_AS726x.INDICATOR_CURRENT_LIMITS:
+        if val not in AS726x.INDICATOR_CURRENT_LIMITS:
             raise ValueError("Must be 1, 2, 4 or 8")
         if self._indicator_led_current == val:
             return
         self._indicator_led_current = val
         state = self._virtual_read(_AS726X_LED_CONTROL)
         state &= ~(0x3 << 1)
-        state = state | (Adafruit_AS726x.INDICATOR_CURRENT_LIMITS.index(val) << 4)
+        state = state | (AS726x.INDICATOR_CURRENT_LIMITS.index(val) << 4)
         self._virtual_write(_AS726X_LED_CONTROL, state)
 
     @property
@@ -251,14 +272,14 @@ class Adafruit_AS726x(object):
 
     @gain.setter
     def gain(self, val):
-        if val not in Adafruit_AS726x.GAIN:
+        if val not in AS726x.GAIN:
             raise ValueError("Must be 1, 3.7, 16 or 64")
         if self._gain == val:
             return
         self._gain = val
         state = self._virtual_read(_AS726X_CONTROL_SETUP)
         state &= ~(0x3 << 4)
-        state |= (Adafruit_AS726x.GAIN.index(val) << 4)
+        state |= AS726x.GAIN.index(val) << 4
         self._virtual_write(_AS726X_CONTROL_SETUP, state)
 
     @property
@@ -298,7 +319,7 @@ class Adafruit_AS726x(object):
         val[1] = self._virtual_read(channel + 1)
         val[2] = self._virtual_read(channel + 2)
         val[3] = self._virtual_read(channel + 3)
-        return struct.unpack('!f', val)[0]
+        return struct.unpack("!f", val)[0]
 
     @property
     def data_ready(self):
@@ -370,6 +391,23 @@ class Adafruit_AS726x(object):
         """Raw red (650nm) 16-bit value"""
         return self.read_channel(_AS7262_RED)
 
+    def _virtual_read(self, addr):
+        raise NotImplementedError("Must be implemented.")
+
+    def _virtual_write(self, addr, value):
+        raise NotImplementedError("Must be implemented.")
+
+
+class AS726x_I2C(AS726x):
+    """AS726x spectral sensor via I2C.
+
+       :param ~busio.I2C i2c_bus: The I2C bus connected to the sensor
+       """
+
+    def __init__(self, i2c_bus, address=_AS726X_ADDRESS):
+        self.i2c_device = I2CDevice(i2c_bus, address)
+        super().__init__()
+
     def _read_u8(self, command):
         """read a single byte from a specified register"""
         buf = self.buf2
@@ -426,5 +464,84 @@ class Adafruit_AS726x(object):
         self.__write_u8(_AS726X_SLAVE_WRITE_REG, value)
 
 
+class AS726x_UART(AS726x):
+    """AS726x spectral sensor via UART.
+
+       :param ~busio.UART uart: The UART connected to the sensor
+       """
+
+    def __init__(self, uart):
+        self._uart = uart
+        self._uart.baudrate = 115200
+        super().__init__()
+
+    def read_channel(self, channel):
+        """Read an individual sensor channel"""
+        return self._virtual_read(channel)
+
+    def read_calibrated_value(self, channel):
+        """Read a calibrated sensor channel"""
+        return self._virtual_read(channel)
+
+    def _uart_xfer(self, cmd):
+        self._uart.reset_input_buffer()
+        cmd += "\n"
+        self._uart.write(cmd.encode())
+        time.sleep(0.1)
+        if self._uart.in_waiting:
+            resp = self._uart.read(self._uart.in_waiting)
+            return resp.rstrip(b" OK\n")
+        return None
+
+    def _virtual_read(self, addr):
+        if addr == _AS726X_HW_VERSION:
+            # just return what is expected
+            return 0x40
+        elif addr == _AS726X_DEVICE_TEMP:
+            return int(self._uart_xfer("ATTEMP"))
+        elif addr == _AS726X_LED_CONTROL:
+            LED_IND = int(self._uart_xfer("ATLED0"))
+            LED_DRV = int(self._uart_xfer("ATLED1"))
+            return LED_IND << 3 | LED_DRV
+        elif addr == _AS726X_CONTROL_SETUP:
+            GAIN = int(self._uart_xfer("ATGAIN"))
+            BANK = int(self._uart_xfer("ATTCSMD"))
+            return GAIN << 4 | BANK << 2 | 1 << 1
+        elif addr in _COLOR_REGS:
+            resp = self._uart_xfer("ATDATA")
+            resp = resp.decode().split(",")
+            return int(resp[_COLOR_REGS.index(addr)])
+        elif addr in _COLOR_REGS_CALIBRATED:
+            resp = self._uart_xfer("ATCDATA")
+            resp = resp.decode().split(",")
+            return float(resp[_COLOR_REGS_CALIBRATED.index(addr)])
+
+    def _virtual_write(self, addr, value):
+        if addr == _AS726X_CONTROL_SETUP:
+            # check for reset
+            if (value >> 7) & 0x01:
+                self._uart.write(b"ATRST\n")
+                return
+            # otherwise proceed
+            GAIN = (value >> 4) & 0x03
+            BANK = (value >> 2) & 0x03
+            self._uart_xfer("ATGAIN={}".format(GAIN))
+            self._uart_xfer("ATTCSMD={}".format(BANK))
+        elif addr == _AS726X_LED_CONTROL:
+            ICL_DRV = (value >> 4) & 0x07
+            LED_DRV = 100 if value & 0x08 else 0
+            ICL_IND = (value >> 1) & 0x07
+            LED_IND = 100 if value & 0x01 else 0
+            self._uart_xfer("ATLED0={}".format(LED_IND))
+            self._uart_xfer("ATLED1={}".format(LED_DRV))
+            self._uart_xfer("ATLEDC={}".format(ICL_DRV << 4 | ICL_IND))
+        elif addr == _AS726X_INT_T:
+            value = int(value / 2.8)
+            self._uart_xfer("ATINTTIME={}".format(value))
+
+
 # pylint: enable=too-many-instance-attributes
 # pylint: enable=too-many-public-methods
+# pylint: enable=invalid-name
+# pylint: enable=no-else-return
+# pylint: enable=inconsistent-return-statements

docs/conf.py

@@ -2,7 +2,8 @@
 
 import os
 import sys
-sys.path.insert(0, os.path.abspath('..'))
+
+sys.path.insert(0, os.path.abspath(".."))
 
 # -- General configuration ------------------------------------------------
 
@@ -10,41 +11,47 @@ sys.path.insert(0, os.path.abspath('..'))
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.intersphinx',
-    'sphinx.ext.todo',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.intersphinx",
+    "sphinx.ext.todo",
 ]
 
-# Uncomment the below if you use native CircuitPython modules such as
-# digitalio, micropython and busio. List the modules you use. Without it, the
-# autodoc module docs will fail to generate with a warning.
-autodoc_mock_imports = ["digitalio", "busio", "adafruit_bus_device", "micropython", "ustruct"]
+autodoc_member_order = "bysource"
 
-autodoc_member_order = 'bysource'
-
-intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),'BusDevice': ('https://circuitpython.readthedocs.io/projects/bus_device/en/latest/', None),'Register': ('https://circuitpython.readthedocs.io/projects/register/en/latest/', None),'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}
+intersphinx_mapping = {
+    "python": ("https://docs.python.org/3.4", None),
+    "BusDevice": (
+        "https://circuitpython.readthedocs.io/projects/busdevice/en/latest/",
+        None,
+    ),
+    "Register": (
+        "https://circuitpython.readthedocs.io/projects/register/en/latest/",
+        None,
+    ),
+    "CircuitPython": ("https://circuitpython.readthedocs.io/en/latest/", None),
+}
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
-source_suffix = '.rst'
+source_suffix = ".rst"
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # General information about the project.
-project = u'Adafruit AS726x Library'
-copyright = u'2017 Dean Miller'
-author = u'Dean Miller'
+project = "Adafruit AS726x Library"
+copyright = "2017 Dean Miller"
+author = "Dean Miller"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = u'1.0'
+version = "1.0"
 # The full version, including alpha/beta/rc tags.
-release = u'1.0'
+release = "1.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
@@ -56,7 +63,7 @@ language = None
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This patterns also effect to html_static_path and html_extra_path
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', '.env', 'CODE_OF_CONDUCT.md']
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store", ".env", "CODE_OF_CONDUCT.md"]
 
 # The reST default role (used for this markup: `text`) to use for all
 # documents.
@@ -68,7 +75,7 @@ default_role = "any"
 add_function_parentheses = True
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 # If true, `todo` and `todoList` produce output, else they produce nothing.
 todo_include_todos = False
@@ -82,26 +89,27 @@ todo_emit_warnings = True
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
+on_rtd = os.environ.get("READTHEDOCS", None) == "True"
 
 if not on_rtd:  # only import and set the theme if we're building docs locally
     try:
         import sphinx_rtd_theme
-        html_theme = 'sphinx_rtd_theme'
-        html_theme_path = [sphinx_rtd_theme.get_html_theme_path(), '.']
+
+        html_theme = "sphinx_rtd_theme"
+        html_theme_path = [sphinx_rtd_theme.get_html_theme_path(), "."]
     except:
-        html_theme = 'default'
-        html_theme_path = ['.']
+        html_theme = "default"
+        html_theme_path = ["."]
 else:
-    html_theme_path = ['.']
+    html_theme_path = ["."]
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ["_static"]
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = 'AdafruitAs726xLibrarydoc'
+htmlhelp_basename = "AdafruitAs726xLibrarydoc"
 
 # -- Options for LaTeX output ---------------------------------------------
 
@@ -109,15 +117,12 @@ latex_elements = {
     # The paper size ('letterpaper' or 'a4paper').
     #
     # 'papersize': 'letterpaper',
-
     # The font size ('10pt', '11pt' or '12pt').
     #
     # 'pointsize': '10pt',
-
     # Additional stuff for the LaTeX preamble.
     #
     # 'preamble': '',
-
     # Latex figure (float) alignment
     #
     # 'figure_align': 'htbp',
@@ -127,8 +132,13 @@ latex_elements = {
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-    (master_doc, 'AdafruitAS726xLibrary.tex', u'AdafruitAS726x Library Documentation',
-     author, 'manual'),
+    (
+        master_doc,
+        "AdafruitAS726xLibrary.tex",
+        "AdafruitAS726x Library Documentation",
+        author,
+        "manual",
+    ),
 ]
 
 # -- Options for manual page output ---------------------------------------
@@ -136,8 +146,13 @@ latex_documents = [
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    (master_doc, 'AdafruitAS726xlibrary', u'Adafruit AS726x Library Documentation',
-     [author], 1)
+    (
+        master_doc,
+        "AdafruitAS726xlibrary",
+        "Adafruit AS726x Library Documentation",
+        [author],
+        1,
+    )
 ]
 
 # -- Options for Texinfo output -------------------------------------------
@@ -146,7 +161,13 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-    (master_doc, 'AdafruitAS726xLibrary', u'Adafruit AS726x Library Documentation',
-     author, 'AdafruitAS726xLibrary', 'One line description of project.',
-     'Miscellaneous'),
+    (
+        master_doc,
+        "AdafruitAS726xLibrary",
+        "Adafruit AS726x Library Documentation",
+        author,
+        "AdafruitAS726xLibrary",
+        "One line description of project.",
+        "Miscellaneous",
+    ),
 ]

examples/as726x_simpletest.py

@@ -3,7 +3,11 @@ import time
 import board
 import busio
 
-from adafruit_as726x import Adafruit_AS726x
+# for I2C use:
+from adafruit_as726x import AS726x_I2C
+
+# for UART use:
+# from adafruit_as726x import AS726x_UART
 
 # maximum value for sensor reading
 max_val = 16000
@@ -11,27 +15,33 @@ max_val = 16000
 # max number of characters in each graph
 max_graph = 80
 
+
 def graph_map(x):
     return min(int(x * max_graph / max_val), max_graph)
 
-# Initialize I2C bus and sensor.
+
+# for I2C use:
 i2c = busio.I2C(board.SCL, board.SDA)
-sensor = Adafruit_AS726x(i2c)
+sensor = AS726x_I2C(i2c)
+
+# for UART use:
+# uart = busio.UART(board.TX, board.RX)
+# sensor = AS726x_UART(uart)
 
 sensor.conversion_mode = sensor.MODE_2
 
 while True:
     # Wait for data to be ready
     while not sensor.data_ready:
-        time.sleep(.1)
+        time.sleep(0.1)
 
     # plot plot the data
     print("\n")
-    print("V: " + graph_map(sensor.violet)*'=')
-    print("B: " + graph_map(sensor.blue)*'=')
-    print("G: " + graph_map(sensor.green)*'=')
-    print("Y: " + graph_map(sensor.yellow)*'=')
-    print("O: " + graph_map(sensor.orange)*'=')
-    print("R: " + graph_map(sensor.red)*'=')
+    print("V: " + graph_map(sensor.violet) * "=")
+    print("B: " + graph_map(sensor.blue) * "=")
+    print("G: " + graph_map(sensor.green) * "=")
+    print("Y: " + graph_map(sensor.yellow) * "=")
+    print("O: " + graph_map(sensor.orange) * "=")
+    print("R: " + graph_map(sensor.red) * "=")
 
     time.sleep(1)

requirements.txt

@@ -1,2 +1,3 @@
-adafruit-circuitpython-bus-device
+Adafruit-Blinka
+adafruit-circuitpython-busdevice
 adafruit-circuitpython-register

setup.py

@@ -0,0 +1,56 @@
+"""A setuptools based setup module.
+
+See:
+https://packaging.python.org/en/latest/distributing.html
+https://github.com/pypa/sampleproject
+"""
+
+# Always prefer setuptools over distutils
+from setuptools import setup, find_packages
+
+# To use a consistent encoding
+from codecs import open
+from os import path
+
+here = path.abspath(path.dirname(__file__))
+
+# Get the long description from the README file
+with open(path.join(here, "README.rst"), encoding="utf-8") as f:
+    long_description = f.read()
+
+setup(
+    name="adafruit-circuitpython-as726x",
+    use_scm_version=True,
+    setup_requires=["setuptools_scm"],
+    description="CircuitPython driver for AS726x spectral sensor.",
+    long_description=long_description,
+    long_description_content_type="text/x-rst",
+    # The project's main homepage.
+    url="https://github.com/adafruit/Adafruit_CircuitPython_AS726x",
+    # Author details
+    author="Adafruit Industries",
+    author_email="circuitpython@adafruit.com",
+    install_requires=[
+        "Adafruit-Blinka",
+        "adafruit-circuitpython-register",
+        "adafruit-circuitpython-busdevice",
+    ],
+    # Choose your license
+    license="MIT",
+    # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
+    classifiers=[
+        "Development Status :: 3 - Alpha",
+        "Intended Audience :: Developers",
+        "Topic :: Software Development :: Libraries",
+        "Topic :: System :: Hardware",
+        "License :: OSI Approved :: MIT License",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: 3.5",
+    ],
+    # What does your project relate to?
+    keywords="adafruit as726x light sensor hardware micropython circuitpython",
+    # You can just specify the packages manually here if your project is
+    # simple. Or you can use find_packages().
+    py_modules=["adafruit_as726x"],
+)