platformio/platformio-core

PlatformIO Core is a development environment for programming microcontrollers and other embedded hardware. Embedded development means writing software that runs directly on small electronic devices, such as Arduino boards, ESP32 chips, and various ARM and AVR-based microcontrollers, rather than on a general-purpose computer. This repository contains the core command-line tool that powers the PlatformIO ecosystem. The tool provides a unified build system that works across many different hardware platforms and chip architectures. Instead of learning a separate toolchain for each type of hardware, developers can use PlatformIO's consistent workflow regardless of whether they are targeting an Arduino, an ESP32, or a less common embedded chip. The project also integrates with popular desktop code editors via an IDE extension. Beyond compiling and uploading code, PlatformIO includes a debugger for stepping through code running on hardware, a unit testing framework for running automated tests on the device itself, and a static code analyzer that checks for common programming mistakes before you run anything. Remote development is listed as an additional advanced option. A built-in library registry lets you search for and install code libraries that others have shared for use with specific hardware platforms. Libraries, development platforms, and tools are all discoverable through this registry. The README links to the registry and documentation, though the README itself is relatively sparse and most of the detail lives in the official docs. The project is written in Python and is open source under the Apache 2.0 license, which allows use in both personal and commercial projects. Telemetry is enabled by default to share anonymous diagnostic data, though it can be turned off in settings.