“platformio.ini” (Project Configuration File)¶

Each PlatformIO project has a configuration file named platformio.ini in the root directory for the project. This is a 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

There are two required sections:

PlatformIO Core (CLI) settings: Section [platformio]
Environment settings: Section [env]

The other sections are optional to include. Here are the allowed sections and their allowed contents:

Example

For more examples, see Examples.

[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