Nordic Semiconductor has launched the nRF Connect SDK Bare Metal option, a new software solution for the next generation nRF54L series of ultra-low power wireless SoCs. This Zephyr RTOS-independent option allows for development of simple Bluetooth LE applications, making it suitable for designs that do not benefit an RTOS or advanced features.
Built around Nordic’s widely adopted SoftDevice architecture, the Bare Metal option introduces architecture and API similarities to the nRF5 SDK, simplifying migration for developers moving from the nRF52 Series and nRF5 SDK, to the next-generation nRF54L Series ultra-low power wireless SoCs. It also supports a streamlined upgrade path to Zephyr RTOS-based development within the same SDK and development environment, allowing developers to scale their applications when needed.
“With the Bare Metal option, we are lowering the entry barrier for developing simple Bluetooth applications, while also offering a clear upgrade path to Zephyr RTOS and the full capabilities of the nRF Connect SDK for new and existing customers,” explained Oyvind Strom, EVP of Short-Range Business Unit, Nordic Semiconductor. “This software option is a meaningful addition that reflects our goal to support a broad range of developers and applications. Nordic’s commitment to the world-class nRF Connect SDK and the Zephyr community remains strong, and this strategy continues to shape our long-term direction.”
At launch, developers can harness the S115 SoftDevice for peripheral-only applications. Later this year, Nordic will launch additional SoftDevice functionality, enabling central and multi-role capabilities – ensuring future scalability for a wider range of applications.
Both the Bare Metal and Zephyr RTOS development co-exist within the nRF Connect SDK and the nRF Connect for VS Code environment. This unified approach allows developers to choose the best fit for their application requirements without switching tools or workflows.
Additionally, the Bare Metal development model also introduces a single-bank Device Firmware Update (DFU) mechanism, optimising non-volatile memory (NVM) usage and leaving more space for application code. A single-bank DFU solution will be added for Zephyr RTOS applications in future nRF Connect SDK releases.
The Bare Metal software components are RTOS-agnostic, allowing integration with third-party RTOS solutions outside the nRF Connect SDK – providing even greater flexibility for embedded developers.
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