..  Copyright 2014-2016 Ivan Kravets <me@ikravets.com>
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at
       http://www.apache.org/licenses/LICENSE-2.0
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.

.. _ci_circleci:

Circle CI
=========

`Circle CI <https://circleci.com/about>`_ is a hosted cloud
platform that provides hosted continuous integration, deployment, and testing
to `GitHub <http://en.wikipedia.org/wiki/GitHub>`_ repositories.

Circle CI is configured by adding a file named ``circle.yml``, which is a
`YAML <http://en.wikipedia.org/wiki/YAML>`_ format text file, to the root
directory of the GitHub repository.

Circle CI automatically detects when a commit has been made and pushed to a
GitHub repository that is using Circle CI, and each time this happens, it will
try to build the project using :ref:`cmd_ci` command. This includes commits to
all branches, not just to the master branch. Circle CI will also build and run
pull requests. When that process has completed, it will notify a developer in
the way it has been configured to do so — for example, by sending an email
containing the build results (showing success or failure), or by posting a
message on an IRC channel. It can be configured to build project on a range of
different :ref:`platforms`.

.. contents::

Integration
-----------

Please make sure to read Circle CI `Getting Started <https://circleci.com/docs/getting-started>`_
guide first.

.. code-block:: yaml

    dependencies:
        pre:
            # Install the latest stable PlatformIO
            - sudo pip install -U platformio

    test:
        override:
            - platformio ci path/to/test/file.c --board=TYPE_1 --board=TYPE_2 --board=TYPE_N
            - platformio ci examples/file.ino --board=TYPE_1 --board=TYPE_2 --board=TYPE_N
            - platformio ci path/to/test/directory --board=TYPE_1 --board=TYPE_2 --board=TYPE_N


For more details as for PlatformIO build process please look into :ref:`cmd_ci`.

Project as a library
~~~~~~~~~~~~~~~~~~~~

When project is written as a library (where own examples or testing code use
it), please use ``--lib="."`` option for :ref:`cmd_ci` command

.. code-block:: yaml

    script:
        - platformio ci --lib="." --board=TYPE_1 --board=TYPE_2 --board=TYPE_N

Library dependecies
~~~~~~~~~~~~~~~~~~~

There 2 options to test source code with dependent libraries:

Install dependent library using :ref:`librarymanager`
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.. code-block:: yaml

    dependencies:
        pre:
            # Install the latest stable PlatformIO
            - sudo pip install -U platformio

            # OneWire Library with ID=1 http://platformio.org/lib/show/1/OneWire
            - platformio lib install 1

    test:
        override:
            - platformio ci path/to/test/file.c --board=TYPE_1 --board=TYPE_2 --board=TYPE_N

Manually download dependent library and include in build process via ``--lib`` option
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.. code-block:: yaml

    dependencies:
        pre:
            # Install the latest stable PlatformIO
            - sudo pip install -U platformio

            # download library to the temporary directory
            - wget https://github.com/PaulStoffregen/OneWire/archive/master.zip -O /tmp/onewire_source.zip
            - unzip /tmp/onewire_source.zip -d /tmp/

    test:
        override:
            - platformio ci path/to/test/file.c --lib="/tmp/OneWire-master" --board=TYPE_1 --board=TYPE_2 --board=TYPE_N

Custom Build Flags
~~~~~~~~~~~~~~~~~~

PlatformIO allows to specify own build flags using :envvar:`PLATFORMIO_BUILD_FLAGS` environment

.. code-block:: yaml

    machine:
        environment:
            PLATFORMIO_BUILD_FLAGS: -D SPECIFIC_MACROS -I/extra/inc


For the more details, please follow to
:ref:`available build flags/options <projectconf_build_flags>`.


Advanced configuration
~~~~~~~~~~~~~~~~~~~~~~

PlatformIO allows to configure multiple build environments for the single
source code using :ref:`projectconf`.

Instead of ``--board`` option, please use :option:`platformio ci --project-conf`

.. code-block:: yaml

    test:
        override:
            - platformio ci path/to/test/file.c --project-conf=/path/to/platoformio.ini

Examples
--------

1. Custom build flags

.. code-block:: yaml

    dependencies:
        cache_directories:
            - "~/.platformio"

        pre:
            - sudo pip install -U platformio

            # pre-install PlatformIO development platforms, they will be cached
            - platformio platforms install atmelavr atmelsam teensy

            #
            # Libraries from PlatformIO Library Registry:
            #
            # http://platformio.org/lib/show/416/TinyGPS
            # http://platformio.org/lib/show/417/SPI4Teensy3
            - platformio lib install 416 417

    test:
        override:
            - platformio ci examples/acm/acm_terminal --board=uno --board=teensy31 --board=due --lib="."
            - platformio ci examples/adk/adk_barcode --board=uno --board=teensy31 --board=due --lib="."
            - platformio ci examples/adk/ArduinoBlinkLED --board=uno --board=teensy31 --board=due --lib="."
            - platformio ci examples/adk/demokit_20 --board=uno --board=teensy31 --board=due --lib="."
            # ...
            - platformio ci examples/Xbox/XBOXUSB --board=uno --board=teensy31 --board=due --lib="."

* Configuration file: https://github.com/ivankravets/USB_Host_Shield_2.0/blob/master/circle.yml
* Build History: https://circleci.com/gh/ivankravets/USB_Host_Shield_2.0/tree/master

2. Dependency on external libraries

.. code-block:: yaml

    dependencies:
        pre:
            # Install the latest stable PlatformIO
            - sudo pip install -U platformio

            # download dependent libraries
            - wget https://github.com/jcw/jeelib/archive/master.zip -O /tmp/jeelib.zip
            - unzip /tmp/jeelib.zip -d /tmp

            - wget https://github.com/Rodot/Gamebuino/archive/master.zip  -O /tmp/gamebuino.zip
            - unzip /tmp/gamebuino.zip -d /tmp

    test:
        override:
            -  platformio ci examples/backSoon/backSoon.ino --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560
            -  platformio ci examples/etherNode/etherNode.ino --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560
            -  platformio ci examples/getDHCPandDNS/getDHCPandDNS.ino --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560
            -  platformio ci examples/getStaticIP/getStaticIP.ino --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560
            # ...
            -  platformio ci examples/twitter/twitter.ino --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560
            -  platformio ci examples/udpClientSendOnly/udpClientSendOnly.ino --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560
            -  platformio ci examples/udpListener/udpListener.ino --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560
            -  platformio ci examples/webClient/webClient.ino --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560

* Configuration file: hhttps://github.com/ivankravets/ethercard/blob/master/circle.yaml
* Build History: https://circleci.com/gh/ivankravets/ethercard/tree/master
