Does the "nRF Connect SDK Bare Metal" option fully support nRF54LM20A?

[moremore]

Hi，

I am setting up the development environment in VS Code for nRF54LM20A.

During the SDK installation, I see the following option:

nRF Connect SDK Bare Metal (Simple, single-threaded Bluetooth LE, low overhead. No RTOS. nRF54L Series only.)

Could you please confirm if this Bare Metal (no RTOS) option fully supports nRF54LM20A?

Thanks!

[Amanda Hsieh]

Hi Jack, 

The nRF Connect SDK Bare Metal supports the nRF54LM20A. It was added in Bare Metal v2.0.0, which is a major release based on nRF Connect SDK v3.3.0. See the Release Notes v2.0.0

The nRF54LM20A is used with the nRF54LM20 DK and is listed as a supported target device in the Bare Metal software maturity documentation. 

However, keep in mind the general limitations of the Bare Metal option:

• Supported protocols: Bluetooth LE and NFC only (no Thread, Zigbee, Matter, etc.)
• Bluetooth LE features NOT supported: Coded PHY, Channel Sounding, LE Audio, Bluetooth Mesh, and features above Bluetooth 5.0
• No USB support for the Bare Metal option (USB is only supported in the RTOS-based path for nRF54LM20A/nRF54LM20B)
• No long-term support (LTS) — the Bare Metal option does not carry a 5-year LTS commitment
• Driver support: Only low-level nrfx drivers (no higher-level Zephyr drivers)

See the Development Options

If your application requires simple Bluetooth LE connectivity without an RTOS, the Bare Metal option is a valid choice for the nRF54LM20A. If you need more advanced features or protocols, the Zephyr RTOS-based nRF Connect SDK would be the recommended path.

Regards,
Amanda H.