STM32Cube empowers developers to achieve design success by providing a comprehensive suite of professional development tools and embedded software components. This ecosystem helps you differentiate your product, accelerate design cycles, and reduce costs.

This repository offers a concise overview of the STM32Cube embedded software available for STM32 microcontrollers, along with links to the relevant repositories.

For a broader understanding of the STM32Cube ecosystem and its tools, please refer to Getting Started with STM32Cube Ecosystem.

On STMicroelectronics’ GitHub organization, you will find repositories covering most of the STM32Cube Embedded Software. These resources are also accessible via www.st.com, the STM32CubeMX tool, and the STM32 Example Library.

Beyond the all-in-one repositories, which include example projects for popular STM32 Development Kits like Nucleo and Discovery promotion boards, the platform provides modular repositories for specific components and packs, such as:

• The CMSIS interfaces, offering access to the Arm Cortex®-M processor core features and device-specific peripherals of STM32 microcontrollers,
• The STM32Cube Hardware Abstraction Layer (HAL) ensuring maximum portability across the STM32 portfolio, complemented by the low-layer (LL) APIs — a lightweight, expert-oriented layer closer to the hardware. Both HAL and LL APIs can be used together with minimal restrictions,
• Drivers for additional hardware found on the promotion boards (e.g., external memories, audio codecs, screen controllers),
• Middleware including RTOS, USB, file systems, touch sensing, and open bootloader,
• Utilities including standard output redirection and basic task scheduling for bare-metal applications.

These repositories also empower STM32 developers to report issues and contribute updates, facilitated by a Contributor License Agreement feature (see each repository’s CONTRIBUTING guide).

The STM32Cube Hardware Abstraction Layer (HAL) is available in two major versions.

• The first one, HAL1 (version 1.x.x), is included in the STM32Cube MCU packages listed in the HAL1-based software table below, but also in the STM32Cube MPU packages.
• The second one, HAL2 (version 2.x.x), is included in the STM32Cube MCU packages listed in the HAL2-based software table below. It is introduced with the latest STM32 series and offers enhanced features and improved performance.

Depending on your STM32 series, we recommend starting with the appropriate introduction page as outlined in the tables below.

STM32 MCUs	STM32 series
Mainstream	STM32C5

STM32 MCUs	STM32 series
Mainstream	STM32C0, STM32F0, STM32F1, STM32F3, STM32G0, STM32G4
High-performance	STM32F2, STM32F4, STM32F7, STM32H5, STM32H7, STM32H7RS, STM32N6
Ultra-low-power	STM32L0, STM32L1, STM32L4, STM32L5, STM32U0, STM32U3, STM32U5
Wireless	STM32WB, STM32WB0, STM32WBA, STM32WL, STM32WL3