Travis CI 

Travis CI officially supports PlatformIO for Embedded Builds.

Travis CI is an open-source hosted, distributed continuous integration service used to build and test projects hosted at GitHub.

Travis CI is configured by adding a file named .travis.yml, which is a YAML format text file, to the root directory of the GitHub repository.

Travis CI automatically detects when a commit has been made and pushed to a repository that is using Travis CI, and each time this happens, it will try to build the project using pio ci command. This includes commits to all branches, not just to the master branch. Travis 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 Development Platforms.

Integration 

Please make sure to read Travis CI Getting Started and general build configuration guides first.

Note

If you are going to use PlatformIO Unit Testing or Remote Development you will need to define PLATFORMIO_AUTH_TOKEN environment variable in project settings. See Defining Variables in Repository Settings guide.

PlatformIO is written in Python and is recommended to be run within Travis CI Python isolated environment. There are two possible ways of running PlatformIO in CI services:

Using pio run command

This variant is default choice for native PlatformIO projects:

language: python
python:
    - "3.11"

# Cache PlatformIO packages using Travis CI container-based infrastructure
sudo: false
cache:
    directories:
        - "~/.platformio"
        - $HOME/.cache/pip

install:
    - pip install -U platformio
    - pio update

script:
    - pio run -e <ID_1> -e <ID_2> -e <ID_N>

Using pio ci command

This variant is more convenient when project is written as a library (when there are examples or testing code) as it has additional options for specifying extra libraries and boards from command line interface:

language: python
python:
    - "3.11"

# Cache PlatformIO packages using Travis CI container-based infrastructure
sudo: false
cache:
    directories:
        - "~/.platformio"
        - $HOME/.cache/pip

env:
    - PLATFORMIO_CI_SRC=path/to/test/file.c
    - PLATFORMIO_CI_SRC=examples/file.ino
    - PLATFORMIO_CI_SRC=path/to/test/directory

install:
    - pip install -U platformio
    - pio update

script:
    - pio ci --board=<ID_1> --board=<ID_2> --board=<ID_N>

Then perform steps 1, 2 and 4 from http://docs.travis-ci.com/user/getting-started/

Library dependencies 

There 2 options to test source code with dependent libraries:

Install dependent library using Library Management 

install:
    - pip install -U platformio

    #
    # Libraries from PlatformIO Library Registry:
    #
    # https://platformio.org/lib/show/1/OneWire
    - pio lib -g install 1

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

install:
    - 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/

script:
    - pio ci --lib="/tmp/OneWire-master" --board=<ID_1> --board=<ID_2> --board=<ID_N>

Custom Build Flags 

PlatformIO allows one to specify own build flags using PLATFORMIO_BUILD_FLAGS environment

env:
    - PLATFORMIO_CI_SRC=path/to/test/file.c PLATFORMIO_BUILD_FLAGS="-D SPECIFIC_MACROS_PER_TEST_ENV -I/extra/inc"
    - PLATFORMIO_CI_SRC=examples/file.ino
    - PLATFORMIO_CI_SRC=path/to/test/directory

install:
    - pip install -U platformio
    - export PLATFORMIO_BUILD_FLAGS="-D GLOBAL_MACROS_FOR_ALL_TEST_ENV"

For the more details, please follow to available build flags/options.

Advanced configuration 

PlatformIO allows one to configure multiple build environments for the single source code using “platformio.ini” (Project Configuration File).

Instead of --board option, please use pio ci --project-conf

script:
    - pio ci --project-conf=/path/to/platoformio.ini

Examples 

Custom build flags

os: linux
dist: focal
language: python
python:
    - "3.11"

# Cache PlatformIO packages using Travis CI container-based infrastructure
cache:
    directories:
        - "~/.platformio"
        - $HOME/.cache/pip

env:
    - PLATFORMIO_CI_SRC=examples/acm/acm_terminal
    - PLATFORMIO_CI_SRC=examples/Bluetooth/WiiIRCamera PLATFORMIO_BUILD_FLAGS="-DWIICAMERA"
    - PLATFORMIO_CI_SRC=examples/ftdi/USBFTDILoopback
    - PLATFORMIO_CI_SRC=examples/Xbox/XBOXUSB
    # - ...

install:
    - pip install -U platformio
    - pio update

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

script:
    - pio ci --board=uno --board=teensy31 --board=due --lib="."

Configuration file: https://github.com/felis/USB_Host_Shield_2.0/blob/master/.travis.yml
Build History: https://travis-ci.org/felis/USB_Host_Shield_2.0

Dependency on external libraries

os: linux
dist: focal
language: python
python:
    - "3.11"

# Cache PlatformIO packages using Travis CI container-based infrastructure
cache:
    directories:
        - "~/.platformio"
        - $HOME/.cache/pip

env:
    - PLATFORMIO_CI_SRC=examples/backSoon/backSoon.ino
    - PLATFORMIO_CI_SRC=examples/etherNode/etherNode.ino
    # -

install:
    - pip install -U platformio
    - pio update

    - 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

script:
    - pio ci --lib="." --lib="/tmp/jeelib-master" --lib="/tmp/Gamebuino-master/libraries/tinyFAT" --board=uno --board=megaatmega2560

Configuration file: https://github.com/jcw/ethercard/blob/master/.travis.yml
Build History: https://travis-ci.org/jcw/ethercard

Dynamic testing of the boards

os: linux
dist: focal
language: python
python:
    - "3.11"

# Cache PlatformIO packages using Travis CI container-based infrastructure
cache:
    directories:
        - "~/.platformio"
        - $HOME/.cache/pip

env:
    - PLATFORMIO_CI_SRC=examples/TimeArduinoDue PLATFORMIO_CI_EXTRA_ARGS="--board=due"
    - PLATFORMIO_CI_SRC=examples/TimeGPS
    - PLATFORMIO_CI_SRC=examples/TimeNTP
    - PLATFORMIO_CI_SRC=examples/TimeTeensy3 PLATFORMIO_CI_EXTRA_ARGS="--board=teensy31"
    # - ...

install:
    - pip install -U platformio
    - pio update
    - rm -rf ./linux

    #
    # Libraries from PlatformIO Library Registry:
    #
    # https://platformio.org/lib/show/416/TinyGPS
    - pio lib -g install 416 421 422

script:
    - pio ci --lib="." --board=uno --board=teensy20pp $PLATFORMIO_CI_EXTRA_ARGS

Configuration file: https://github.com/ivankravets/Time/blob/master/.travis.yml
Build History: https://travis-ci.org/ivankravets/Time

Advanced configuration with extra project options and libraries

os: linux
dist: focal
language: python
python:
    - "3.11"

# Cache PlatformIO packages using Travis CI container-based infrastructure
cache:
    directories:
        - "~/.platformio"
        - $HOME/.cache/pip

env:
    - PLATFORMIO_CI_SRC=examples/Boards_Bluetooth/Adafruit_Bluefruit_LE
    - PLATFORMIO_CI_SRC=examples/Boards_Bluetooth/Arduino_101_BLE PLATFORMIO_CI_EXTRA_ARGS="--board=genuino101"
    - PLATFORMIO_CI_SRC=examples/Boards_USB_Serial/Blue_Pill_STM32F103C PLATFORMIO_CI_EXTRA_ARGS="--board=bluepill_f103c8 --project-option='framework=arduino'"
    - PLATFORMIO_CI_SRC=examples/Export_Demo/myPlant_ESP8266 PLATFORMIO_CI_EXTRA_ARGS="--board=nodemcuv2 --project-option='lib_ignore=WiFi101'"
    # - ...

install:
    - pip install -U platformio
    - pio update

    #
    # Libraries from PlatformIO Library Registry:
    #
    # https://platformio.org/lib/show/44/Time
    # https://platformio.org/lib/show/419/SimpleTimer
    #
    # https://platformio.org/lib/show/17/Adafruit-CC3000
    # https://platformio.org/lib/show/28/SPI4Teensy3
    # https://platformio.org/lib/show/91/UIPEthernet
    # https://platformio.org/lib/show/418/WildFireCore
    # https://platformio.org/lib/show/420/WildFire-CC3000
    # https://platformio.org/lib/show/65/WiFlyHQ
    # https://platformio.org/lib/show/19/Adafruit-DHT
    # https://platformio.org/lib/show/299/WiFi101
    # https://platformio.org/lib/show/259/BLEPeripheral
    # https://platformio.org/lib/show/177/Adafruit_BluefruitLE_nRF51

    - pio lib -g install 17 28 91 418 419 420 65 44 19 299 259 177 https://github.com/vshymanskyy/BlynkESP8266.git https://github.com/cmaglie/FlashStorage.git https://github.com/michael71/Timer5.git

script:
    - make travis-build

Configuration file: https://github.com/blynkkk/blynk-library/blob/master/.travis.yml
Build History: https://travis-ci.org/blynkkk/blynk-library