PlatformIO Open Source August Updates
New boards and dev-kits, Support for the latest ESP-IDF and Zephyr RTOS, Updates for Espressif32, ST STM32 and Microchip SAM dev-platforms
Welcome to the August 2026 updates of PlatformIO Open Source professional collaborative platform for embedded development.
This month we received a lot of helpful feedback from our community, which let us identify the most important parts of our OSS ecosystem that required our attention, so there are plenty of updates pushed in this month that we hope you will like.
During August, we added support for the latest ESP-IDF v6.1 and Zephyr RTOS 4.4.2, rolled out updates for Espressif32, ST STM32 and other development platforms, fixed a lot of issues. Some of the key highlights include:
- ESP-IDF v6.1
- Zephyr RTOS v4.4.2
- ST STM32 dev-platform v20.0
- Espressif32 dev-platform v7.1
- Microchip SAM dev-platform v9.0
ESP-IDF v6.1
We’re happy to announce updated support for the latest release of ESP-IDF v6.1 - the official development framework for the ESP32, ESP32-S and ESP32-C Series SoCs. It provides a self-sufficient SDK for any generic application development on these platforms, using programming languages such as C and C++. ESP-IDF currently powers millions of devices in the field, and enables building a variety of network-connected products, ranging from simple light bulbs and toys to big appliances and industrial devices.
Major enhancements in v6.1:
- Supported BLE uart more interfaces
- Added Wi-Fi Aware Pairing and Security for iOS compatibility
- Added support for transmitting multiple non-contiguous buffers by UHCI
- Now cache won’t be disabled while calling read APIs on other chips than ESP32
More information on project configuration for ESP-IDF can be found here.
Related resources for ESP-IDF:
Zephyr RTOS v4.4.2
We’re happy to announce updated support for the latest release v4.4.2 of Zephyr Project - a scalable real-time operating system (RTOS) supporting multiple hardware architectures, optimized for resource-constrained devices, and built with safety and security in mind.
Major enhancements in v4.4.2:
- Bluetooth LE host qualification for 4.4 release
- Added mcxc242 lpuart dma support (async api)
ENTROPY_PSA_CRYPTO_RNGdeprecated without migration path
Related resources for Zephyr framework:
- Release notes for v4.4.2
- Documentation for Zephyr framework
- Supported development platforms
- Supported boards
ST STM32 dev-platform v20.0
The new release of the ST STM32 dev-platform comes with new boards and dev-kits, support for the latest Zephyr RTOS and Arduino core, updated STM32Cube packages:
- New boards:
- Nucleo C031C6
- Nucleo C071RB
- Nucleo C092RC
- STM32C0116-DK
- STM32C0316-DK
- Updated STM32Cube packages to the latest available:
- STM32CubeC0 v1.4.1 (release notes)
- STM32CubeF0 v1.11.6 (release notes)
- STM32CubeF1 v1.8.7 (release notes)
- STM32CubeF2 v1.9.6 (release notes)
- STM32CubeF3 v1.11.6 (release notes)
- STM32CubeF4 v1.28.3 (release notes)
- STM32CubeF7 v1.17.4 (release notes)
- STM32CubeG0 v1.6.3 (release notes)
- STM32CubeG4 v1.6.3 (release notes)
- STM32CubeH7 v1.13.0 (release notes)
- STM32CubeL0 v1.12.4 (release notes)
- STM32CubeL1 v1.10.6 (release notes)
- STM32CubeL4 v1.18.2 (release notes)
- STM32CubeL5 v1.6.0 (release notes)
- Updated STM32 Arduino Core to v3.0.0 (release notes)
- Updated Zephyr to v4.4.2 (release notes)
Related resources for the ST STM32 dev-platform:
Espressif32 dev-platform v7.1
The new release of the Espressif 32 dev-platform brings support for the latest ESP-IDF and minor improvements:
- Added support for ESP-IDF v6.1 (release notes)
- Fixed C++ flag leakage from IDF build environment (#1759)
- Minor fixes and improvements
Related resources for the Espressif32 dev-platform:
Microchip SAM dev-platform v9.0
The new release of the Microchip SAM dev-platform comes with updated support for the latest Zephyr RTOS and minor improvements:
- Updated Zephyr to v4.4.2 (release notes)
- Added support for custom board variants directory (#238)
- Added missing firmware offsets (#233)
- Minor fixes and improvements
Stay in touch with us
Stay tuned to this blog or follow us on LinkedIn and Twitter @PlatformIO_Org to keep up to date with the latest news, articles and tips!
