• Added support for Python 3.14
• Upgraded the Doctest testing framework to version 2.4.12, the GoogleTest to version 1.17.0, and the Unity to version 2.6.1, incorporating the latest features and improvements for enhanced testing capabilities
• Enhanced compatibility with the CCLS language server, improving integration with editors like Emacs, Sublime Text, and Vim (issue #5186)
• Improved error messages for package installation to make it easier to understand when a package is missing or incompatible (pull #5336).
• Fixed a regression issue where custom build flags were not properly reflected in the compile_commands.json file, ensuring accurate compilation database generation
• Fixed an issue where fully-qualified serial port URLs (e.g., rfc2217://host:port) were incorrectly treated as wildcard patterns (issue #5225)
• Fixed an issue where the toolchain path in static analysis was not handled correctly if it contained spaces (pull #5351)
• Fixed installation failure when the executable path contains spaces for postinstall scripts and handling both list and string command formats (pull #5366)
• Fixed cleanup of the .pio/libdeps folder so that leftover libraries are properly removed when the lib_deps option is empty (issue #5110)

• Resolved a regression issue that prevented PIO Home from opening external links (issue #5084)

• Introduced the PLATFORMIO_RUN_JOBS environment variable, allowing manual override of the number of parallel build jobs (issue #5077)
• Added support for tar.xz tarball dependencies (pull #4974)
• Ensured that dependencies of private libraries are no longer unnecessarily re-installed, optimizing dependency management and reducing redundant operations (issue #4987)
• Resolved an issue where the compiledb target failed to properly escape compiler executable paths containing spaces (issue #4998)
• Resolved an issue with incorrect path resolution when linking static libraries via the build_flags option (issue #5004)
• Resolved an issue where the --project-dir flag did not function correctly with the pio check and pio debug commands (issue #5029)
• Resolved an issue where the LDF occasionally excluded bundled platform libraries from the dependency graph (pull #4941)

• Added support for Python 3.13
• Introduced the PLATFORMIO_SYSTEM_TYPE environment variable, enabling manual override of the detected system type for greater flexibility and control in custom build environments
• Enhanced internet connection checks by falling back to HTTPS protocol when HTTP (port 80) fails (issue #4980)
• Upgraded the build engine to the latest version of SCons (4.8.1) to improve build performance, reliability, and compatibility with other tools and systems (release notes)
• Upgraded the Doctest testing framework to version 2.4.11, the GoogleTest to version 1.15.2, and the Unity to version 2.6.0, incorporating the latest features and improvements for enhanced testing capabilities
• Corrected an issue where the incorrect public class was imported for the DoctestTestRunner (issue #4949)

• Resolved an issue where the LDF couldn't locate a library dependency declared via version control system repository (issue #4885)
• Resolved an issue related to the inaccurate detection of the Clang compiler (pull #4897)

• Introduced the --json-output option to the pio test command, enabling users to generate test results in the JSON format
• Upgraded the build engine to the latest version of SCons (4.7.0) to improve build performance, reliability, and compatibility with other tools and systems (release notes)
• Broadened version support for the pyelftools dependency, enabling compatibility with lower versions and facilitating integration with a wider range of third-party tools (issue #4834)
• Addressed an issue where passing a relative path (--project-dir) to the pio project init command resulted in an error (issue #4847)
• Enhanced Static Code Analysis to accommodate scenarios where custom src_dir or include_dir are located outside the project folder (pull #4874)
• Corrected the validation of symlink:// package specifications , resolving an issue that caused the package manager to repeatedly reinstall dependencies (pull #4870)
• Resolved an issue related to the relative package path in the pio pkg publish command
• Resolved an issue where the LDF selected an incorrect library version (issue #4860)
• Resolved an issue with the hexlify filter in the device monitor command, ensuring proper representation of characters with Unicode code points higher than 127 (issue #4732)

• Expanded support for SCons variables declared in the legacy format ${SCONS_VARNAME} (issue #4828)

• Added support for Python 3.12
• Introduced the capability to launch the debug server in a separate process (issue #4722)
• Introduced a warning during the verification of MCU maximum RAM usage, signaling when the allocated RAM surpasses 100% (issue #4791)
• Drastically enhanced the speed of project building when operating in verbose mode (issue #4783)
• Upgraded the build engine to the latest version of SCons (4.6.0) to improve build performance, reliability, and compatibility with other tools and systems (release notes)
• Enhanced the handling of built-in variables in "platformio.ini" configuration file during Interpolation of Values (issue #4695)
• Enhanced PIP dependency declarations for improved reliability and extended support to include Python 3.6 (issue #4819)
• Implemented automatic installation of missing dependencies when utilizing a SOCKS proxy (issue #4822)
• Implemented a fail-safe mechanism to terminate a debugging session if an unknown CLI option is passed (issue #4699)
• Rectified an issue where ${platformio.name} erroneously represented None as the default project name (issue #4717)
• Resolved an issue where the COMPILATIONDB_INCLUDE_TOOLCHAIN setting was not correctly applying to private libraries (issue #4762)
• Resolved an issue where get_systype() inaccurately returned the architecture when executed within a Docker container on a 64-bit kernel with a 32-bit userspace (issue #4777)
• Resolved an issue with incorrect handling of the check_src_filters option when used in multiple environments (issue #4788)
• Resolved an issue where running pio project metadata resulted in duplicated "include" entries (issue #4723)
• Resolved an issue where native debugging failed on the host machine (issue #4745)
• Resolved an issue where custom debug configurations were being inadvertently overwritten in VSCode's launch.json (issue #4810)

• Resolved a possible issue that may cause generated projects for PlatformIO IDE for VSCode to fail to launch a debug session because of a missing "objdump" binary when GDB is not part of the toolchain package
• Resolved a regression issue that resulted in the malfunction of the Memory Inspection feature within PIO Home

• Resolved an issue that caused generated projects for PlatformIO IDE for VSCode to break when the -iprefix compiler flag was used
• Resolved an issue encountered while utilizing the pio pkg exec command on the Windows platform to execute Python scripts from a package
• Implemented a crucial improvement to the pio run command, guaranteeing that the monitor target is not executed if any of the preceding targets, such as upload, encounter failures
• Cppcheck v2.11 with new checks, CLI commands and various analysis improvements
• Resolved a critical issue that arose on macOS ARM platforms due to the Python "requests" module, leading to a "ModuleNotFoundError: No module named 'chardet'" (issue #4702)

• Rectified a regression bug that occurred when the -include flag was passed via the build_flags option as a relative path and subsequently expanded (issue #4683)
• Resolved an issue that resulted in unresolved absolute toolchain paths when generating the Compilation database "compile_commands.json" (issue #4684)

• Added a new --lint option to the pio project config command, enabling users to efficiently perform linting on the "platformio.ini" configuration file
• Enhanced the parsing of the "platformio.ini" configuration file to provide comprehensive diagnostic information
• Expanded the functionality of the library.json manifest by allowing the use of the underscore symbol in the keywords field
• Optimized project integration templates to address the issue of long paths on Windows (issue #4652)
• Refactored Unit Testing engine to resolve compiler warnings with "-Wpedantic" option (pull #4671)
• Eliminated erroneous warning regarding the use of obsolete PlatformIO Core when downgrading to the stable version (issue #4664)
• Updated the pio project metadata command to return C/C++ flags as parsed Unix shell arguments when dumping project build metadata
• Resolved a critical issue related to the usage of the -include flag within the build_flags option, specifically when employing dynamic variables (issue #4682)
• Removed PlatformIO IDE for Atom from the documentation as Atom has been deprecated

• Introduced a new --sample-code option to the pio project init command, which allows users to include sample code in the newly created project
• Added validation for project working environment names to ensure that they only contain lowercase letters a-z, numbers 0-9, and special characters _ (underscore) and - (hyphen)
• Added the ability to show a detailed library dependency tree only in verbose mode, which can help you understand the relationship between libraries and troubleshoot issues more effectively (issue #4517)
• Added the ability to run only the device monitor when using the pio run -t monitor command, saving you time and resources by skipping the build process
• Implemented a new feature to store device monitor logs in the project's logs folder, making it easier to access and review device monitor logs for your projects (issue #4596)
• Improved support for projects located on Windows network drives, including Network Shared Folder, Dropbox, OneDrive, Google Drive, and other similar services (issue #3417)
• Improved source file filtering functionality for the Static Code Analysis feature, making it easier to analyze only the code you need to
• Upgraded the build engine to the latest version of SCons (4.5.2) to improve build performance, reliability, and compatibility with other tools and systems (release notes)
• Implemented a fix for shell injection vulnerabilities when converting INO files to CPP, ensuring your code is safe and secure (issue #4532)
• Restored the project generator for the NetBeans IDE, providing you with more flexibility and options for your development workflow
• Resolved installation issues with PIO Remote on Raspberry Pi and other small form-factor PCs (issue #4425, issue #4493, issue #4607)
• Resolved an issue where the build_cache_dir setting was not being recognized consistently across multiple environments (issue #4574)
• Resolved an issue where organization details could not be updated using the pio org update command
• Resolved an issue where the incorrect debugging environment was generated for VSCode in "Auto" mode (issue #4597)
• Resolved an issue where native tests would fail if a custom program name was specified (issue #4546)
• Resolved an issue where the PlatformIO Debugging solution was not escaping the tool installation process into MI2 correctly (issue #4565)
• Resolved an issue where multiple targets were not executed sequentially (issue #4604)
• Resolved an issue where upgrading PlatformIO Core fails on Windows with Python 3.11 (issue #4540)

• Added support for Python 3.11
• Added a new name configuration option to customize a project name (pull #4498)
• Made assets (templates, 99-platformio-udev.rules) part of Python's module (issue #4458)
• Updated Clang-Tidy check tool to v15.0.5 with new diagnostics and bugfixes
• Removed dependency on the "zeroconf" package and install it only when a user lists mDNS devices (issue with zeroconf's LGPL license)
• Show the real error message instead of "Can not remove temporary directory" when "platformio.ini" configuration file is broken (issue #4480)
• Fixed an issue with an incorrect test summary when a testcase name includes a colon (issue #4508)
• Fixed an issue when extends did not override options in the right order (issue #4462)
• Fixed an issue when pio pkg list and pio pkg uninstall commands fail if there are circular dependencies in the library.json manifests (issue #4475)

• Added a new enable_proxy_strict_ssl setting to disable the proxy server certificate verification (issue #4432)
• Documented PlatformIO Core Proxy Configuration
• Speeded up device port finder by avoiding loading board HWIDs from development platforms
• Improved caching of build metadata in debug mode
• Fixed an issue when pio pkg install --storage-dir command requires PlatformIO project (issue #4410)

• Added support for accepting the original FileNode environment in a "callback" function when using Build Middlewares (pull #4380)
• Improved device port finder when using dual channel UART converter (issue #4367)
• Improved project dependency resolving when using the pio project init --ide command
• Upgraded build engine to the SCons 4.4.0 (release notes)
• Keep custom "unwantedRecommendations" when generating projects for VSCode (issue #4383)
• Do not resolve project dependencies for the cleanall target (issue #4344)
• Warn about calling "env.BuildSources" in a POST-type script (issue #4385)
• Fixed an issue when escaping macros/defines for IDE integration (issue #4360)
• Fixed an issue when the "cleanall" target removes dependencies from all working environments (issue #4386)

• Fixed a regression bug when opening device monitor without any filters (issue #4363)

• Export a PIO_UNIT_TESTING macro to the project source files and dependent libraries in the Unit Testing mode
• Improved detection of Windows architecture (issue #4353)
• Warn about unknown device monitor filters (issue #4362)
• Fixed a regression bug when libArchive option declared in the library.json manifest was ignored (issue #4351)
• Fixed an issue when the pio pkg publish command didn't work with Python 3.6 (issue #4352)

• Added new monitor_encoding project configuration option to configure Device Monitor (issue #4350)
• Allowed specifying project environments for pio ci command (issue #4347)
• Show "TimeoutError" only in the verbose mode when can not find a serial port
• Fixed an issue when a serial port was not automatically detected if the board has predefined HWIDs
• Fixed an issue with endless scanning of project dependencies (issue #4349)
• Fixed an issue with LDF when incompatible libraries were used for the working project environment with the missed framework (pull #4346)

• Device Manager

  • Automatically reconnect device monitor if a connection fails
  • Added new pio device monitor --no-reconnect option to disable automatic reconnection
  • Handle device monitor disconnects more gracefully (issue #3939)
  • Improved a serial port finder for Black Magic Probe (issue #4023)
  • Improved a serial port finder for a board with predefined HWIDs
  • Replaced monitor_flags with independent project configuration options: monitor_parity, monitor_eol, monitor_raw, monitor_echo
  • Fixed an issue when the monitor filters were not applied in their order (issue #4320)

• Unit Testing

  • Updated "Getting Started" documentation for GoogleTest testing and mocking framework
  • Export Unit Testing flags only to the project build environment (projenv, files in "src" folder)
  • Merged the "building" stage with "uploading" for the embedded target (issue #4307)
  • Do not resolve dependencies from the project "src" folder when the test_build_src option is not enabled
  • Do not immediately terminate a testing program when results are received
  • Fixed an issue when a custom pio test --project-config was not handled properly (issue #4299)
  • Fixed an issue when testing results were wrong in the verbose mode (issue #4336)

• Build System

  • Significantly improved support for Pre & Post Actions
    • Allowed to declare actions in the PRE-type scripts even if the target is not ready yet
    • Allowed library maintainers to use Pre & Post Actions in the library extraScript
  • Documented Stringification – converting a macro argument into a string constant (issue #4310)
  • Added new pio run --monitor-port option to specify custom device monitor port to the monitor target (issue #4337)
  • Added env.StringifyMacro(value) helper function for the Advanced Scripting
  • Allowed to Import("projenv") in a library extra script (issue #4305)
  • Fixed an issue when the build_unflags operation ignores a flag value (issue #4309)
  • Fixed an issue when the build_unflags option was not applied to the ASPPFLAGS scope
  • Fixed an issue on Windows OS when flags were wrapped to the temporary file while generating the Compilation database "compile_commands.json"
  • Fixed an issue with the LDF when recursively scanning dependencies in the chain mode
  • Fixed a "PermissionError" on Windows when running "clean" or "cleanall" targets (issue #4331)

• Package Management

  • Fixed an issue when library dependencies were installed for the incompatible project environment (issue #4338)

• Miscellaneous

  • Warn about incompatible Bash version for the Shell Completion (issue #4326)

• Control Unit Testing verbosity with a new multilevel pio test -v command option (issue #4276)
• Follow symbolic links during searching for the unit test suites (issue #4288)
• Show a warning when testing an empty project without a test suite (issue #4278)
• Improved support for Asking for input (prompts)
• Fixed an issue when the build_src_flags option was applied outside the project scope (issue #4277)
• Fixed an issue with debugging assembly files without preprocessor (".s")

• Improved support for the renamed configuration options (issue #4270)
• Fixed an issue when calling the built-in pio device monitor filters
• Fixed an issue when using Interpolation of Values and merging str+int options (issue #4271)

A professional collaborative platform for declarative, safety-critical, and test-driven embedded development.

Please check the Migration guide from 5.x to 6.0.

• Package Management

  • New unified Package Management CLI (pio pkg):

    • pio pkg exec - run command from package tool (issue #4163)
    • pio pkg install - install the project dependencies or custom packages
    • pio pkg list - list installed packages
    • pio pkg outdated - check for project outdated packages
    • pio pkg search - search for packages
    • pio pkg show - show package information
    • pio pkg uninstall - uninstall the project dependencies or custom packages
    • pio pkg update - update the project dependencies or custom packages

  • Package Manifest

    • Added support for "scripts" (issue #485)
    • Added support for multi-licensed packages using SPDX Expressions (issue #4037)
    • Added support for "dependencies" declared in a "tool" package manifest

  • Added support for symbolic links allowing pointing the local source folder to the Package Manager (issue #3348)

  • Automatically install dependencies of the local (private) project libraries (issue #2910)

  • Improved detection of a package type from the tarball archive (issue #3828)

  • Ignore files according to the patterns declared in ".gitignore" when using the pio package pack command (issue #4188)

  • Dropped automatic updates of global libraries and development platforms (issue #4179)

  • Dropped support for the "pythonPackages" field in "platform.json" manifest in favor of Extra Python Dependencies

  • Fixed an issue when manually removed dependencies from the "platformio.ini" configuration file were not uninstalled from the storage (issue #3076)

• Unit Testing

  • Refactored from scratch Unit Testing solution and its documentation
  • New: Test Hierarchy (issue #4135)
  • New: Doctest testing framework (issue #4240)
  • New: GoogleTest testing and mocking framework (issue #3572)
  • New: Semihosting (issue #3516)
  • New: Hardware Simulators for Unit Testing (QEMU, Renode, SimAVR, and custom solutions)
  • New: test build configuration
  • Added support for a custom testing framework
  • Added support for a custom testing command
  • Added support for a custom Unity library (issue #3980)
  • Added support for the socket:// and rfc2217:// protocols using test_port option (issue #4229)
  • List available project tests with a new pio test --list-tests option
  • Pass extra arguments to the testing program with a new pio test --program-arg option (issue #3132)
  • Generate reports in JUnit and JSON formats using the pio test command (issue #2891)
  • Provide more information when the native program crashed on a host (errored with a non-zero return code) (issue #3429)
  • Improved automatic detection of a testing serial port (issue #4076)
  • Fixed an issue when command line parameters (--ignore, --filter) do not override values defined in the "platformio.ini" configuration file (issue #3845)
  • Renamed the "test_build_project_src" project configuration option to the test_build_src
  • Removed the "test_transport" option in favor of the Custom "unity_config.h"

• Static Code Analysis

  • Updated analysis tools:

    • Cppcheck v2.7 with various checker improvements and fixed false positives
    • PVS-Studio v7.18 with improved and updated semantic analysis system

  • Added support for the custom Clang-Tidy configuration file (issue #4186)

  • Added ability to override a tool version using the platform_packages option (issue #3798)

  • Fixed an issue with improper handling of defects that don't specify a source file (issue #4237)

• Build System

  • Show project dependency licenses when building in the verbose mode
  • Fixed an issue when LDF ignores the project lib_deps while resolving library dependencies (issue #3598)
  • Fixed an issue with calling an extra script located outside a project (issue #4220)
  • Fixed an issue when GCC preprocessor was applied to the ".s" assembly files on case-sensitive OS such as Window OS (issue #3917)
  • Fixed an issue when LDF ignores build_src_flags in the "deep+" mode (issue #4253)

• Integration

  • Added a new build variable (COMPILATIONDB_INCLUDE_TOOLCHAIN) to include toolchain paths in the compilation database (issue #3735)
  • Changed a default path for compilation database compile_commands.json to the project root
  • Enhanced integration for Qt Creator (issue #3046)

• Project Configuration

  • Extended Interpolation of Values with ${this} pattern (issue #3953)
  • Embed environment name of the current section in the "platformio.ini" configuration file using ${this.__env__} pattern
  • Renamed the "src_build_flags" project configuration option to the build_src_flags
  • Renamed the "src_filter" project configuration option to the build_src_filter

• Miscellaneous

  • Pass extra arguments to the native program with a new pio run --program-arg option (issue #4246)
  • Improved PIO Remote setup on credit-card sized computers (Raspberry Pi, BeagleBon, etc) (issue #3865)
  • Finally removed all tracks to the Python 2.7, the Python 3.6 is the minimum supported version.

• Improved support for private packages in PlatformIO Registry
• Improved checking of available Internet connection for IPv6-only workstations (pull #4151)
• Better detecting of default PlatformIO project directory on Linux OS (pull #4158)
• Respect disabling debugging server from "platformio.ini" passing an empty value to the debug_server option
• Fixed a "module 'asyncio' has no attribute 'run'" error when launching PIO Home using Python 3.6 (issue #4169)

• Added support for a new headers field in library.json (declare a list of header files that can be included in a project source files using #include <...> directive)
• Improved tab completion support for Bash, ZSH, and Fish shells (issue #4114)
• Improved support for projects located on a network share (issue #3417, issue #3926, issue #4099)
• Improved PIO Remote setup on credit-card sized computers (Raspberry Pi, BeagleBon, etc) (issue #3865)
• Upgraded build engine to the SCons 4.3 (release notes)
• Fixed an issue with the CLion project generator when a macro contains a space (issue #4102)
• Fixed an issue with the NetBeans project generator when the path to PlatformIO contains a space (issue #4096)
• Fixed an issue when the system environment variable does not override a project configuration option (issue #4125)
• Fixed an issue when referencing *_dir option from a custom project configuration environment (issue #4110)
• Fixed an issue with the CLion template that generated a broken CMake file if user's home directory contained an unescaped backslash (issue #4071)
• Fixed an issue with wrong detecting Windows architecture when Python 32bit is used (issue #4134)

• Automatically synchronize active projects between IDE and PlatformIO Home
• Added support for custom device monitor filters (issue #3924)
• Show human-readable message when infinite recursion is detected while processing Interpolation of Values (issue #3883)
• Improved directory interpolation (${platformio.***_dir}) in "platformio.ini" configuration file (issue #3934)
• Ignore resolving of SCons variables (e.g., ${(SOURCE.get_abspath())}) when preprocessing interpolations (issue #3933)
• Added "inc" as a sign that it's the root of the library (issue #4093)
• Fixed an issue when the $PROJECT_DIR variable was not properly replaced in the debug_server option (issue #4086)
• Fixed an issue when PIO Remote device monitor crashes on the first keypress (issue #3832)
• Fixed "Do not know how to make File target 'debug'" issue when debugging project using CLion IDE (pull #4089)
• Fixed "UnicodeEncodeError" when a build output contains non-ASCII characters (issue #3971)
• Fixed an issue when VSCode's debugger does not the honor default environment (issue #4098)

• Override debugging firmware loading mode using --load-mode option for pio debug command
• Added support for CLion IDE 2021.3 (pull #4085)
• Removed debugging "legacy Click" message from CLI (issue #4083)
• Fixed a "TypeError: sequence item 1: expected str instance, list found" issue when extending configuration option in "platformio.ini" with the multi-line default value (issue #4082)

• Clean a build environment and installed library dependencies using a new cleanall target (issue #4062)
• Override a default library builder via a new builder field in a build group of library.json manifest (issue #3957)
• Updated Cppcheck v2.6 with new checks, increased reliability of advanced addons (MISRA/CERT) and various improvements
• Handle the "test" folder as a part of CLion project (issue #4005)
• Improved handling of a library root based on "Conan" or "CMake" build systems (issue #3887)
• Fixed a "KeyError: Invalid board option 'build.cpu'" when using a precompiled library with a board that does not have a CPU field in the manifest (issue #4056)
• Fixed a "FileExist" error when the platformio ci command is used in pair with the --keep-build-dir option (issue #4011)
• Fixed an issue with draft values of C++ language standards that broke static analysis via Cppcheck (issue #3944)

• PlatformIO Debugging

  • Boosted PlatformIO Debugging performance thanks to migrating the codebase to the pure Python 3 Asynchronous I/O stack
  • Debug unit tests created with PlatformIO Unit Testing solution (issue #948)
  • Debug native (desktop) applications on a host machine (issue #980)
  • Support debugging on Windows using Windows CMD/CLI (pio debug) (issue #3793)
  • Configure a custom pattern to determine when debugging server is started with a new debug_server_ready_pattern option
  • Fixed an issue with silent hanging when a custom debug server is not found (issue #3756)

• Package Management

  • Improved a package publishing process:

    • Show package details
    • Check for conflicting names in the PlatformIO Trusted Registry
    • Check for duplicates and used version
    • Validate package manifest

  • Added a new option --non-interactive to pio package publish command

• Build System

  • Process "precompiled" and "ldflags" properties of the "library.properties" manifest (issue #3994)
  • Upgraded build engine to the SCons 4.2 (release notes)
  • Fixed an issue with broken binary file extension when a custom PROGNAME contains dot symbols (issue #3906)
  • Fixed an issue when PlatformIO archives a library that does not contain C/C++ source files (issue #4019)

• Static Code Analysis

  • Updated analysis tools:

    • Clang-Tidy v12.0.1 with new modules and extended checks list
    • Cppcheck v2.5.0 with improved code analysis and MISRA improvements
    • PVS-Studio v7.14 with support for intermodular analysis, improved MISRA support and new diagnostics

• Miscellaneous

  • Ensure that a serial port is ready before running unit tests on a remote target (issue #3742)
  • Fixed an error "Unknown development platform" when running unit tests on a clean machine (issue #3901)
  • Fixed an issue when "main.cpp" was generated for a new project for 8-bit development platforms (issue #3872)

• Fixed a "The command line is too long" issue with a linking process on Windows (issue #3827)
• Fixed an issue with device monitor when the "send_on_enter" filter didn't send EOL chars (issue #3787)
• Fixed an issue with silent mode when unwanted data is printed to stdout (issue #3837)
• Fixed an issue when code inspection fails with "Bad JSON" (issue #3790)
• Fixed an issue with overriding user-specified debugging configuration information in VSCode (issue #3824)

• PlatformIO Home
  • Boosted PlatformIO Home performance thanks to migrating the codebase to the pure Python 3 Asynchronous I/O stack
  • Added a new --session-id option to pio home command that helps to keep PlatformIO Home isolated from other instances and protect from 3rd party access (issue #3397)
• Build System
  • Upgraded build engine to the SCons 4.1 (release notes)
  • Refactored a workaround for a maximum command line character limitation (issue #3792)
  • Fixed an issue with Python 3.8+ on Windows when a network drive is used (issue #3417)
• Package Management
  • New options for pio system prune command:
    • --dry-run option to show data that will be removed
    • --core-packages option to remove unnecessary core packages
    • --platform-packages option to remove unnecessary development platform packages (issue #923)
  • Added new check_prune_system_threshold setting
  • Disabled automatic removal of unnecessary development platform packages (issue #3708, issue #3770)
  • Fixed an issue when unnecessary packages were removed in update --dry-run mode (issue #3809)
  • Fixed a "ValueError: Invalid simple block" when uninstalling a package with a custom name and external source (issue #3816)
• Debugging
  • Configure a custom debug adapter speed using a new debug_speed option (issue #3799)
  • Handle debugging server's "ready_pattern" in "stderr" output
• Miscellaneous
  • Improved listing of multicast DNS services
  • Fixed a "UnicodeDecodeError: 'utf-8' codec can't decode byte" when using J-Link for firmware uploading on Linux (issue #3804)
  • Fixed an issue with a compiler driver for ".ccls" language server (issue #3808)
  • Fixed an issue when pio device monitor --eol and "send_on_enter" filter do not work properly (issue #3787)

• Added "Core" suffix when showing PlatformIO Core version using pio --version command
• Improved .ccls configuration file for Emacs, Vim, and Sublime Text integrations
• Updated analysis tools:
  • Cppcheck v2.3 with improved C++ parser and several new MISRA rules
  • PVS-Studio v7.11 with new diagnostics and updated mass suppression mechanism
• Show a warning message about deprecated support for Python 2 and Python 3.5
• Do not provide "intelliSenseMode" option when generating configuration for VSCode C/C++ extension
• Fixed a "git-sh-setup: file not found" error when installing project dependencies from Git VCS (issue #3740)
• Fixed an issue with package publishing on Windows when Unix permissions are not preserved (issue #3776)

• Added an error selector for Sublime Text build runner (issue #3733)
• Generate a working "projectEnvName" for PlatformIO IDE's debugger for VSCode
• Force VSCode's intelliSenseMode to "gcc-x64" when GCC toolchain is used
• Print ignored test suites and environments in the test summary report only in verbose mode (issue #3726)
• Fixed an issue when the package manager tries to install a built-in library from the registry (issue #3662)
• Fixed an issue when pio package pack ignores some folders (issue #3730)

• Initialize a new project or update the existing passing working environment name and its options (issue #3686)
• Automatically build PlatformIO Core extra Python dependencies on a host machine if they are missed in the registry (issue #3700)
• Improved "core.call" RPC for PlatformIO Home (issue #3671)
• Fixed a "PermissionError: [WinError 5]" on Windows when an external repository is used with lib_deps option (issue #3664)
• Fixed a "KeyError: 'versions'" when dependency does not exist in the registry (issue #3666)
• Fixed an issue with GCC linker when "native" dev-platform is used in pair with library dependencies (issue #3669)
• Fixed an "AssertionError: ensure_dir_exists" when checking library updates from simultaneous subprocesses (issue #3677)
• Fixed an issue when pio package publish command removes original archive after submitting to the registry (issue #3716)
• Fixed an issue when multiple pio lib install command with the same local library results in duplicates in lib_deps (issue #3715)
• Fixed an issue with a "wrong" timestamp in device monitor output using "time" filter (issue #3712)

• Added support for "owner" requirement when declaring dependencies using library.json
• Fixed an issue when using a custom git/ssh package with platform_packages option (issue #3624)
• Fixed an issue with "ImportError: cannot import name '_get_backend' from 'cryptography.hazmat.backends'" when using Remote Development on RaspberryPi device (issue #3652)
• Fixed an issue when pio package unpublish command crashes (issue #3660)
• Fixed an issue when the package manager tries to install a built-in library from the registry (issue #3662)
• Fixed an issue with incorrect value for C++ language standard in IDE projects when an in-progress language standard is used (issue #3653)
• Fixed an issue with "Invalid simple block (semantic_version)" from library dependency that refs to an external source (repository, ZIP/Tar archives) (issue #3658)
• Fixed an issue when can not remove update or remove external dev-platform using PlatformIO Home (issue #3663)

Professional collaborative platform for embedded development

• Migration guide from 4.x to 5.0

Release Notes

• Integration with the new PlatformIO Trusted Registry

  • Enterprise-grade package storage with high availability (multi replicas)

  • Secure, fast, and reliable global content delivery network (CDN)

  • Universal support for all packages:

    • Libraries
    • Development platforms
    • Toolchains

  • Built-in fine-grained access control (role-based, teams, organizations)

  • New CLI commands:

    • pio package – manage packages in the registry
    • pio access – manage package access for users, teams, and maintainers

• Integration with the new Account Management System

  • Manage organizations
  • Manage teams and team memberships

• New Package Management System

  • Integrated PlatformIO Core with the new PlatformIO Registry
  • Support for owner-based dependency declaration (resolves name conflicts) (issue #1824)
  • Automatically save dependencies to "platformio.ini" when installing using PlatformIO CLI (issue #2964)
  • Follow SemVer complaint version constraints when checking library updates issue #1281)
  • Dropped support for "packageRepositories" section in "platform.json" manifest (please publish packages directly to the registry)

• Build System

  • Upgraded build engine to the SCons 4.0 - a next-generation software construction tool

    • Configuration files are Python scripts – use the power of a real programming language to solve build problems
    • Built-in reliable and automatic dependency analysis
    • Improved support for parallel builds
    • Ability to share built files in a cache to speed up multiple builds

  • New Custom Targets

    • Pre/Post processing based on dependent sources (another target, source file, etc.)
    • Command launcher with own arguments
    • Launch command with custom options declared in "platformio.ini"
    • Python callback as a target (use the power of Python interpreter and PlatformIO Build API)
    • List available project targets (including dev-platform specific and custom targets) with a new pio run --list-targets command (issue #3544)

  • Enable "cyclic reference" for GCC linker only for the embedded dev-platforms (issue #3570)

  • Automatically enable LDF dependency chain+ mode (evaluates C/C++ Preprocessor conditional syntax) for Arduino library when "library.property" has "depends" field (issue #3607)

  • Fixed an issue with improper processing of source files added via multiple Build Middlewares (issue #3531)

  • Fixed an issue with the clean target on Windows when project and build directories are located on different logical drives (issue #3542)

• Project Management

  • Added support for "globstar/**" (recursive) pattern for the different commands and configuration options (pio ci, src_filter, check_patterns, library.json > srcFilter). Python 3.5+ is required
  • Added a new -e, --environment option to pio project init command that helps to update a PlatformIO project using the existing environment
  • Dump build system data intended for IDE extensions/plugins using a new pio project data command
  • Do not generate ".travis.yml" for a new project, let the user have a choice

• Unit Testing

  • Updated PIO Unit Testing support for Mbed framework and added compatibility with Mbed OS 6
  • Fixed an issue when running multiple test environments (issue #3523)
  • Fixed an issue when Unit Testing engine fails with a custom project configuration file (issue #3583)

• Static Code Analysis

  • Updated analysis tools:

    • Cppcheck v2.1 with a new "soundy" analysis option and improved code parser
    • PVS-Studio v7.09 with a new file list analysis mode and an extended list of analysis diagnostics

  • Added Cppcheck package for ARM-based single-board computers (issue #3559)

  • Fixed an issue with PIO Check when a defect with a multiline error message is not reported in verbose mode (issue #3631)

• Miscellaneous

  • Display system-wide information using a new pio system info command (issue #3521)
  • Remove unused data using a new pio system prune command (issue #3522)
  • Show ignored project environments only in the verbose mode (issue #3641)
  • Do not escape compiler arguments in VSCode template on Windows.

• Added PlatformIO CLI Shell Completion for Fish, Zsh, Bash, and PowerShell (issue #3435)
• Automatically build contrib-pysite package on a target machine when pre-built package is not compatible (issue #3482)
• Fixed an issue on Windows when installing a library dependency from Git repository (issue #2844, issue #3328)

• Fixed "UnicodeDecodeError: 'utf-8' codec can't decode byte" when non-Latin chars are used in project path (issue #3481)

• New Account Management System (preview)
• Open source PIO Remote client
• Improved PIO Check with more accurate project processing
• Echo what is typed when send_on_enter device monitor filter is used (issue #3452)
• Fixed PIO Unit Testing for Zephyr RTOS
• Fixed UnicodeDecodeError on Windows when network drive (NAS) is used (issue #3417)
• Fixed an issue when saving libraries in new project results in error "No option 'lib_deps' in section" (issue #3442)
• Fixed an incorrect node path used for pattern matching when processing middleware nodes
• Fixed an issue with missing lib_extra_dirs option in SRC_LIST for CLion (issue #3460)

• Fixed a SyntaxError "'return' with argument inside generator" for PIO Unified Debugger when Python 2.7 is used
• Fixed an issue when lib_archive = no was not honored in "platformio.ini"
• Fixed a TypeError "super(type, obj): obj must be an instance or subtype of type" when device monitor is used with a custom dev-platform filter (issue #3431)

• Initial support for an official PlatformIO for CLion IDE plugin:

  • Smart C and C++ editor
  • Code refactoring
  • On-the-fly code analysis
  • "New PlatformIO Project" wizard
  • Building, Uploading, Testing
  • Integrated debugger (inline variable view, conditional breakpoints, expressions, watchpoints, peripheral registers, multi-thread support, etc.)

• Device Monitor 2.0

  • Added PlatformIO Device Monitor Filter API (dev-platforms can extend base device monitor with a custom functionality, such as exception decoding) (pull #3383)
  • Configure project device monitor with monitor_filters option
  • Capture device monitor output to a file with log2file filter (issue #670)
  • Show a timestamp for each new line with time filter (issue #981)
  • Send a text to device on ENTER with send_on_enter filter (issue #926)
  • Show a hexadecimal representation of the data (code point of each character) with hexlify filter

• New standalone (1-script) PlatformIO Core Installer

• Initial support for Renode simulation framework (issue #3401)

• Added support for Arm Mbed "module.json" dependencies field (issue #3400)

• Improved support for Arduino "library.properties" depends field

• Fixed an issue when quitting from PlatformIO IDE does not shutdown PIO Home server

• Fixed an issue "the JSON object must be str, not 'bytes'" when PIO Home is used with Python 3.5 (issue #3396)

• Fixed an issue when Python 2 does not keep encoding when converting ".ino" (issue #3393)

• Fixed an issue when "libArchive": false in "library.json" does not work (issue #3403)

• Fixed an issue when not all commands in compilation database "compile_commands.json" use absolute paths (pull #3415)

• Fixed an issue when unknown transport is used for PIO Unit Testing engine (issue #3422)

• Improved VSCode template with special forceInclude field for direct includes via -include flag (issue #3379)
• Improved support of PIO Home on card-sized PC (Raspberry Pi, etc.) (issue #3313)
• Froze "marshmallow" dependency to 2.X for Python 2 (issue #3380)
• Fixed "TypeError: unsupported operand type(s)" when system environment variable is used by project configuration parser (issue #3377)
• Fixed an issue when Library Dependency Finder (LDF) ignores custom "libLDFMode" and "libCompatMode" options in library.json
• Fixed an issue when generating of compilation database "compile_commands.json" does not work with Python 2.7 (issue #3378)

• PlatformIO Home 3.1:

  • Project Manager
  • Project Configuration UI for "platformio.ini"

• PIO Check – automated code analysis without hassle:

  • Added support for PVS-Studio static code analyzer

• Initial support for Project Manager CLI:

  • Show computed project configuration with a new platformio project config command or dump to JSON with platformio project config --json-output (issue #3335)
  • Moved platformio init command to platformio project init

• Generate compilation database "compile_commands.json" (issue #2990)

• Control debug flags and optimization level with a new debug_build_flags option

• Install a dev-platform with ALL declared packages using a new --with-all-packages option for pio platform install command (issue #3345)

• Added support for "pythonPackages" in platform.json manifest (PlatformIO Package Manager will install dependent Python packages from PyPi registry automatically when dev-platform is installed)

• Handle project configuration (monitor, test, and upload options) for PIO Remote commands (issue #2591)

• Added support for Arduino's library.properties depends field (issue #2781)

• Autodetect monitor port for boards with specified HWIDs (issue #3349)

• Updated SCons tool to 3.1.2

• Updated Unity tool to 2.5.0

• Made package ManifestSchema compatible with marshmallow >= 3 (issue #3296)

• Warn about broken library manifest when scanning dependencies (issue #3268)

• Do not overwrite custom items in VSCode's "extensions.json" (issue #3374)

• Fixed an issue when env.BoardConfig() does not work for custom boards in extra scripts of libraries (issue #3264)

• Fixed an issue with "start-group/end-group" linker flags on Native development platform (issue #3282)

• Fixed default PIO Unified Debugger configuration for J-Link probe

• Fixed an issue with LDF when header files not found if "libdeps_dir" is within a subdirectory of "lib_extra_dirs" (issue #3311)

• Fixed an issue "Import of non-existent variable 'projenv''" when development platform does not call "env.BuildProgram()" (issue #3315)

• Fixed an issue when invalid CLI command does not return non-zero exit code

• Fixed an issue when Project Inspector crashes when flash use > 100% (issue #3368)

• Fixed a "UnicodeDecodeError" when listing built-in libraries on macOS with Python 2.7 (issue #3370)

• Fixed an issue with improperly handled compiler flags with space symbols in VSCode template (issue #3364)

• Fixed an issue when no error is raised if referred parameter (interpolation) is missing in a project configuration file (issue #3279)

• PIO Check – automated code analysis without hassle:
  • Potential NULL pointer dereferences
  • Possible indexing beyond array bounds
  • Suspicious assignments
  • Reads of potentially uninitialized objects
  • Unused variables or functions
  • Out of scope memory usage.
• PlatformIO Home 3.0 and Project Inspection
  • Static Code Analysis
  • Firmware File Explorer
  • Firmware Memory Inspection
  • Firmware Sections & Symbols Viewer.
• Added support for Build Middlewares: configure custom build flags per specific file, skip any build nodes from a framework, replace build file with another on-the-fly, etc.
• Extend project environment configuration in "platformio.ini" with other sections using a new extends option (issue #2953)
• Generate .ccls LSP file for Emacs cross references, hierarchies, completion and semantic highlighting
• Added --no-ansi flag for PIO Core to disable ANSI control characters
• Added --shutdown-timeout option to PIO Home Server
• Fixed an issue with project generator for CLion IDE when 2 environments were used (issue #2824)
• Fixed default PIO Unified Debugger configuration for J-Link probe
• Fixed an issue when configuration file options partly ignored when using custom --project-conf (issue #3034)
• Fixed an issue when installing a package using custom Git tag and submodules were not updated correctly (issue #3060)
• Fixed an issue with linking process when $LDSCRIPT contains a space in path
• Fixed security issue when extracting items from TAR archive (issue #2995)
• Fixed an issue with project generator when src_build_flags were not respected (issue #3137)
• Fixed an issue when booleans in "platformio.ini" are not parsed properly (issue #3022)
• Fixed an issue with invalid encoding when generating project for Visual Studio (issue #3183)
• Fixed an issue when Project Config Parser does not remove in-line comments when Python 3 is used (issue #3213)
• Fixed an issue with a GCC Linter for PlatformIO IDE for Atom (issue #3218)

• Added support for multi-environment PlatformIO project for CLion IDE (issue #2824)
• Generate .ccls LSP file for Vim cross references, hierarchies, completion and semantic highlighting (issue #2952)
• Added support for PLATFORMIO_DISABLE_COLOR system environment variable which disables color ANSI-codes in a terminal output (issue #2956)
• Updated SCons tool to 3.1.1
• Remove ProjectConfig cache when "platformio.ini" was modified outside
• Fixed an issue with PIO Unified Debugger on Windows OS when debug server is piped
• Fixed an issue when --upload-port CLI flag does not override declared upload_port option in "platformio.ini" (Project Configuration File)

• Fixed an issue with a broken LDF when checking for framework compatibility issue #2940

• Print debug tool name for the active debugging session
• Do not shutdown PIO Home Server for "upgrade" operations (issue #2784)
• Improved computing of project check sum (structure, configuration) and avoid unnecessary rebuilding
• Improved printing of tabulated results
• Automatically normalize file system paths to UNIX-style for Project Generator (issue #2857)
• Ability to set "databaseFilename" for VSCode and C/C++ extension (issue #2825)
• Renamed "enable_ssl" setting to strict_ssl
• Fixed an issue with incorrect escaping of Windows slashes when using PIO Unified Debugger and "piped" openOCD
• Fixed an issue when "debug", "home", "run", and "test" commands were not shown in "platformio --help" CLI
• Fixed an issue with PIO Home's "No JSON object could be decoded" (issue #2823)
• Fixed an issue when library.json had priority over project configuration for LDF (issue #2867)

Migration Guide from 3.0 to 4.0.

• PlatformIO Plus Goes Open Source

  • Built-in PIO Unified Debugger
  • Built-in PIO Unit Testing

• Project Configuration

  • New project configuration parser with a strict options typing (API)
  • Unified workspace storage (workspace_dir -> .pio) for PlatformIO Build System, Library Manager, and other internal services (issue #1778)
  • Share common (global) options between project environments using [env] section (issue #1643)
  • Include external configuration files with extra_configs option (issue #1590)
  • Custom project ***_dir options declared in platformio section have higher priority than Environment variables
  • Added support for Unix shell-style wildcards for monitor_port option (issue #2541)
  • Added new monitor_flags option which allows passing extra flags and options to platformio device monitor command (issue #2165)
  • Added support for PLATFORMIO_DEFAULT_ENVS system environment variable (issue #1967)
  • Added support for shared_dir where you can place an extra files (extra scripts, LD scripts, etc.) which should be transferred to a PIO Remote machine

• Library Management

  • Switched to workspace .pio/libdeps folder for project dependencies instead of .piolibdeps
  • Save libraries passed to platformio lib install command into the project dependency list (lib_deps) with a new --save flag (issue #1028)
  • Install all project dependencies declared via lib_deps option using a simple platformio lib install command (issue #2147)
  • Use isolated library dependency storage per project build environment (issue #1696)
  • Look firstly in built-in library storages for a missing dependency instead of PlatformIO Registry (issue #1654)
  • Override default source and include directories for a library via library.json manifest using includeDir and srcDir fields
  • Fixed an issue when library keeps reinstalling for non-latin path (issue #1252)
  • Fixed an issue when lib_compat_mode = strict does not ignore libraries incompatible with a project framework

• Build System

  • Switched to workspace .pio/build folder for build artifacts instead of .pioenvs
  • Switch between Build Configurations (release and debug) with a new project configuration option build_type
  • Custom platform_packages per a build environment with an option to override default (issue #1367)
  • Print platform package details, such as version, VSC source and commit (issue #2155)
  • Control a number of parallel build jobs with a new -j, --jobs option
  • Override default "platformio.ini" (Project Configuration File) with a custom using -c, --project-conf option for platformio run, platformio debug, or platformio test commands (issue #1913)
  • Override default development platform upload command with a custom upload_command (issue #2599)
  • Configure a shared folder for the derived files (objects, firmwares, ELFs) from a build system using build_cache_dir option (issue #2674)
  • Fixed an issue when -U in build_flags does not remove macro previously defined via -D flag (issue #2508)

• Infrastructure

  • Python 3 support (issue #895)
  • Significantly speedup back-end for PIO Home. It works super fast now!
  • Added support for the latest Python "Click" package (CLI) (issue #349)
  • Added options to override default locations used by PlatformIO Core (core_dir, globallib_dir, platforms_dir, packages_dir, cache_dir) (issue #1615)
  • Removed line-buffering from platformio run command which was leading to omitting progress bar from upload tools (issue #856)
  • Fixed numerous issues related to "UnicodeDecodeError" and international locales, or when project path contains non-ASCII chars (issue #143, issue #1342, issue #1959, issue #2100)

• Integration

  • Support custom CMake configuration for CLion IDE using CMakeListsUser.txt file
  • Fixed an issue with hardcoded C standard version when generating project for CLion IDE (issue #2527)
  • Fixed an issue with Project Generator when an include path search order is inconsistent to what passed to the compiler (issue #2509)
  • Fixed an issue when generating invalid "Eclipse CDT Cross GCC Built-in Compiler Settings" if a custom PLATFORMIO_CORE_DIR is used (issue #806)

• Miscellaneous

  • Deprecated --only-check PlatformIO Core CLI option for "update" sub-commands, please use --dry-run instead
  • Fixed "systemd-udevd" warnings in 99-platformio-udev.rules (issue #2442)
  • Fixed an issue when package cache (Library Manager) expires too fast (issue #2559)

• PIO Unified Debugger: improved debugging in debug_load_mode = modified and fixed an issue with useless project rebuilding
• Project Generator: fixed a VSCode C/C++'s "Cannot find" warning when CPPPATH folder does not exist
• Fixed an "IndexError: list index out of range" for Arduino sketch preprocessor (issue #2268)
• Fixed an issue when invalid "env_default" in "platformio.ini" (Project Configuration File) results into unhandled errors (issue #2265)

• Project Generator: fixed a warning "Property !!! WARNING !!! is not allowed" for VSCode (issue #2243)
• Fixed an issue when PlatformIO Build System does not pick up "mbed_lib.json" files from libraries (issue #2164)
• Fixed an error with conflicting declaration of a prototype (Arduino sketch preprocessor)
• Fixed "FileExistsError" when platformio ci command is used in pair with --keep-build-dir option
• Fixed an issue with incorrect order of project "include" and "src" paths in CPPPATH (issue #1914)

• Project Generator: added new targets for CLion IDE "BUILD_VERBOSE" and "MONITOR" (serial port monitor) (issue #359)
• Fixed an issue with slow updating of PlatformIO Core packages on Windows
• Fixed an issue when platformio ci recompiles project if --keep-build-dir option is passed (issue #2109)
• Fixed an issue when $PROJECT_HASH template was not expanded for the other directory ***_dir options in "platformio.ini" (Project Configuration File) (issue #2170)

• Improved Project Generator for Desktop IDEs:
  • Use full path to PlatformIO CLI when generating a project (issue #1674)
  • CLion: Improved project portability using "${CMAKE_CURRENT_LIST_DIR}" instead of full path
  • Eclipse: Provide language standard to a project C/C++ indexer (issue #1010)
• Fixed an issue with incorrect detecting of compatibility (LDF) between generic library and Arduino or ARM mbed frameworks
• Fixed "Runtime Error: Dictionary size changed during iteration" (issue #2003)
• Fixed an error "Could not extract item..." when extracting TAR archive with symbolic items on Windows platform (issue #2015)

• Ignore *.asm and *.ASM files when building Arduino-based library (compatibility with Arduino builder)
• Fixed spurious project's "Problems" for PlatformIO IDE for VSCode when ARM mbed framework is used
• Fixed an issue with a broken headers list when generating ".clang_complete" for Emacs (issue #1960)

• Improved IntelliSense for PlatformIO IDE for VSCode via passing extra compiler information for C/C++ Code Parser (resolves issues with spurious project's "Problems")
• Fixed an issue with VSCode IntelliSense warning about the missed headers located in include folder
• Fixed incorrect wording when initializing/updating project
• Fixed an issue with incorrect order for library dependencies CPPPATH (issue #1914)
• Fixed an issue when Library Dependency Finder (LDF) does not handle project src_filter (issue #1905)
• Fixed an issue when Library Dependency Finder (LDF) finds spurious dependencies in chain+ and deep+ modes (issue #1930)

• Generate an include and test directories with a README file when initializing a new project
• Support in-line comments for multi-line value (lib_deps, build_flags, etc) in “platformio.ini” (Project Configuration File)
• Added $PROJECT_HASH template variable for build_dir. One of the use cases is setting a global storage for project artifacts using PLATFORMIO_BUILD_DIR system environment variable. For example, /tmp/pio-build/$PROJECT_HASH (Unix) or %TEMP%/pio-build/$PROJECT_HASH (Windows)
• Improved a loading speed of PIO Home "Recent News"
• Improved PIO Unified Debugger for "mbed" framework and fixed issue with missed local variables
• Introduced "Release" and "Debug" Build Configurations
• Build project in "Debug Mode" including debugging information with a new debug target using platformio run command or targets option in platformio.ini. The last option allows avoiding project rebuilding between "Run/Debug" modes. (issue #1833)
• Process build_unflags for the cloned environment when building a static library
• Report on outdated 99-platformio-udev.rules (issue #1823)
• Show a valid error when the Internet is off-line while initializing a new project (issue #1784)
• Do not re-create ".gitignore" and ".travis.yml" files if they were removed from a project
• Fixed an issue when dynamic build flags were not handled correctly (issue #1799)
• Fixed an issue when pio run -t monitor always uses the first monitor_port even with multiple environments (issue #1841)
• Fixed an issue with broken includes when generating .clang_complete and space is used in a path (issue #1873)
• Fixed an issue with incorrect handling of a custom package name when using platformio lib install or platformio platform install commands

• Program Memory Usage

  • Print human-readable memory usage information after a build and before uploading
  • Print detailed memory usage information with "sections" and "addresses" in verbose mode
  • Check maximum allowed "program" and "data" sizes before uploading/programming (issue #1412)

• PIO Unit Testing:

  • Documented Project Shared Code
  • Force building of project source code using test_build_project_src option
  • Fixed missed UNIT_TEST macro for unit test components/libraries

• Check package structure after unpacking and raise error when antivirus tool blocks PlatformIO package manager (issue #1462)

• Lock interprocess requests to PlatformIO Package Manager for install/uninstall operations (issue #1594)

• Fixed an issue with PIO Remote when upload process depends on the source code of a project framework

• Fixed an issue when srcFilter field in library.json breaks a library build (issue #1735)

• Improved removing of default build flags using build_unflags option (issue #1712)
• Export LIBS, LIBPATH, and LINKFLAGS data from project dependent libraries to the global build environment
• Don't export CPPPATH data of project dependent libraries to framework's build environment (issue #1665)
• Handle "architectures" data from "library.properties" manifest in lib_compat_mode = strict
• Added workaround for Python SemVer package's issue #61 with caret range and pre-releases
• Replaced conflicted "env" pattern by "sysenv" for "platformio.ini" Dynamic Variables" (issue #1705)
• Removed "date&time" when processing project with platformio run command (issue #1343)
• Fixed issue with invalid LD script if path contains space
• Fixed preprocessor for Arduino sketch when function returns certain type (issue #1683)
• Fixed issue when platformio lib uninstall removes initial source code (issue #1023)

• PlatformIO Home - interact with PlatformIO ecosystem using modern and cross-platform GUI:
  • "Recent News" block on "Welcome" page
  • Direct import of development platform's example
• Simplify configuration for PIO Unit Testing: separate main program from a test build process, drop requirement for #ifdef UNIT_TEST guard
• Override any option from board manifest in Project Configuration File "platformio.ini" (issue #1612)
• Configure a custom path to SVD file using debug_svd_path option
• Custom project description which will be used by PlatformIO Home
• Updated Unity tool to 2.4.3
• Improved support for Black Magic Probe in "uploader" mode
• Renamed "monitor_baud" option to "monitor_speed"
• Fixed issue when a custom lib_dir was not handled correctly (issue #1473)
• Fixed issue with useless project rebuilding for case insensitive file systems (Windows)
• Fixed issue with build_unflags option when a macro contains value (e.g., -DNAME=VALUE)
• Fixed issue which did not allow to override runtime build environment using extra POST script
• Fixed "RuntimeError: maximum recursion depth exceeded" for library manager (issue #1528)

• PlatformIO Home - interact with PlatformIO ecosystem using modern and cross-platform GUI:
  • Multiple themes (Dark & Light)
  • Ability to specify a name for new project
• Control PIO Unified Debugger and its firmware loading mode using debug_load_mode option
• Added aliases (off, light, strict) for LDF Compatibility Mode
• Search for a library using PIO Library Registry ID id:X (e.g. pio lib search id:13)
• Show device system information (MCU, Frequency, RAM, Flash, Debugging tools) in a build log
• Show all available upload protocols before firmware uploading in a build log
• Handle "os.mbed.com" URL as a Mercurial (hg) repository
• Improved support for old mbed libraries without manifest
• Fixed project generator for Qt Creator IDE (issue #1303, issue #1323)
• Mark project source and library directories for CLion IDE (issue #1359, issue #1345, issue #897)
• Fixed issue with duplicated "include" records when generating data for IDE (issue #1301)