STMicroelectronics Extends Microsoft® Azure RTOS Development Across STM32 Microcontroller Family

By Taryn Engmark

Associate Editor

Embedded Computing Design

April 20, 2022


STMicroelectronics Extends Microsoft® Azure RTOS Development Across STM32 Microcontroller Family

STMicroelectronics has extended support for Microsoft® Azure RTOS in the STM32Cube development environment, covering additional high performance, mainstream, ultra-low-power and wireless microcontrollers (MCUs) from the STM32 family.

Users can leverage combined features and properties of Azure RTOS, the STM32Cube, and the STM32 family to optimize MCU properties, now with over 700 MCUs in the STM32 Arm® Cortex®-M portfolio. With this extension, there are dedicated software packages for mainstream STM32G0, ultra-low-power STM32L4, STM32L4+, STM32L5 and STM32U5, high-performance STM32G4, STM32F4, STM32F7 and STM32H7, and wireless STM32WL and STM32WB MCUs.

STM32Cube simplifies developing with Azure RTOS as a standalone package or as add-on configurable components. The Azure RTOS suite is fully supported in the STM32CubeIDE tool and the STM32CubeMX initializer, which can directly configure Azure RTOS components. ST has added free code examples that help accelerate development and includes several demonstration projects that are ready to run on STM32 Nucleo boards, Discovery kits, and evaluation boards. Code can be alternatively accessed on STMicroelectronics Github.

The Azure RTOS suite comprises a comprehensive and consistent middleware offer for embedded projects. It includes the ThreadX real-time operating system, which has a minimal memory footprint, and the FileX fault-tolerant FAT file system with LevelX wear leveling for NAND and NOR Flash memories. The suite also comes with NetX Duo industrial-grade TCP/IP stacks, and the USBX USB stack with host and device support.

Integrating Azure RTOS within STM32Cube simplifies the development of high-quality embedded projects that are robust, energy efficient, and feature rich. Support throughout the wider STM32 ecosystem helps quickly handle engineering challenges and includes the STM32 MCU WiKi and a dedicated Azure RTOS topic in the online ST-developer community.

For more information, visit and