“platformio.ini” (Project Configuration File)¶

platformio.ini is a configuration file that lets you set up your development environment, share your code and configurations with others, and leverage a declarative approach to development. You can use platformio.ini to configure multiple platforms and architectures without having to worry about different toolchains or build systems for each one.

Each PlatformIO project has its own platformio.ini that is located in the root directory of the project. This is an INI-style file. platformio.ini has sections (each denoted by a [header]) and key/value pairs within the sections. Lines beginning with ; are ignored and may be used to provide comments.

Multiple value options can be specified in two ways:

Split values with “, “ (comma + space)
Multi-line format, where each new line starts with at least two spaces.

Here are the allowed sections and their allowed contents:

Example

For more examples, see official project examples and community projects.

[platformio]
default_envs = nodemcuv2

; Set/override default options for each "[env:***]"
[env]
build_flags =
    -D VERSION=1.2.3
    -D DEBUG=1
lib_deps_builtin =
    SPI
    Wire
lib_deps_external =
    bblanchon/ArduinoJson @ ~5.6,!=5.4
    https://github.com/gioblu/PJON.git#v2.0
    IRremoteESP8266=https://github.com/markszabo/IRremoteESP8266/archive/master.zip

[env:nodemcuv2]
platform = espressif8266
framework = arduino
board = nodemcuv2

; Build options
build_flags =
    ${env.build_flags}
    -DSSID_NAME=HELLO
    -DSSID_PASWORD=WORLD

; Library options
lib_deps =
    ${env.lib_deps_builtin}
    ${env.lib_deps_external}
    https://github.com/me-no-dev/ESPAsyncTCP.git
    knolleary/PubSubClient@^2.8
    paulstoffregen/OneWire

; Serial Monitor options
monitor_speed = 115200
monitor_flags =
    --encoding
    hexlify

; Unit Testing options
test_ignore = test_desktop

[env:bluepill_f103c8]
platform = ststm32
framework = arduino
board = bluepill_f103c8

; Library options
lib_deps = ${env.lib_deps_external}

; Debug options
debug_tool = custom
debug_server =
    ${platformio.packages_dir}/tool-jlink/JLinkGDBServer
    -singlerun
    -if
    SWD
    -select
    USB
    -port
    2331
    -device
    STM32F103C8

; Unit Testing options
test_ignore = test_desktop