Simplicity Studio VS Code Extension 2.0.0 (Jan 22, 2026) Release Notes#

Leverage the power of Visual Studio Code while staying fully integrated with Simplicity Studio 6. The Simplicity Studio extension enables seamless build, flash, and debug operations directly within VS Code, while allowing you to continue using familiar Simplicity Studio project configurator graphical user interface.

Release Summary#

Key Features#

Added in 2.0.0#

  • The extension now works exclusively with Simplicity Studio 6. Support for Simplicity Studio 5 has been removed.

  • Verified with Simplicity Studio 6.1.0 and remains backward compatible with earlier Simplicity Studio 6 versions.

  • Improved Simplicity Studio path detection. The extension now automatically synchronizes with the latest Simplicity Studio 6 installation, making upgrades seamless.

  • Overhauled the debug launch flow to improve debug session reliability. The extension now uses Simplicity Commander to flash and halt the target device before handing control to J-Link, ensuring a more predictable and stable debug workflow.

  • Enhanced debug configuration management so that custom settings in launch.json are preserved rather than overwritten by the extension. This allows developers to retain advanced configurations (for example, Live Watch) when starting debug sessions from either the extension or the VS Code Run and Debug view.

  • Simplified debug session startup. The extension no longer prompts users to select a binary file when starting a debug session. Instead, it automatically selects a .rps, .hex, or .s37 file, in that priority order, based on availability.

  • During debugging, the preferred file is used by default (.rps, .hex, or .s37). For EFR32xG917 devices, the .rps file is used. To flash a different file, select the file and use the Flash link in the Binaries section.

  • Updated the Home and Welcome pages with improved getting-started guidance.

  • Verified with Simplicity Studio 6.1.0 and remains backward compatible with earlier Simplicity Studio 6 versions.

  • Added a Simplicity Studio launch link to the Tools view for quick access.

  • Simplicity SDK header files are now displayed in the project file tree for direct access.

Bug Fixes#

Fixed in 2.0.0#

  • Fixed issue with RTT terminal not launching from a custom board debug adapter.

  • Fixed issue in the Build Configurator project for setting Compilers flags to keep Studio from overwriting the custom changes.

  • Resolved an issue where connected debug adapters were not detected or listed in the VS Code Devices view.

Removed/Deprecated Features#

  • Removed support for Simplicity Studio 5 Setting that allowed the user to switch between Simplicity Studio and Simplicity Studio V6 features.

Known Issues and Limitation#

UID

Issue or Limitation Descripton

Workaround (if any)

Affected Tools, SDK, Harware

??

Project Configurator Additional Sources menu does not support 'Solution' projects for adding customer source files.

None

Add customer source files in CMakeLists.txt.

Series 2 and 3 Devices

UID

Issue Description

1528904

Fixed compiler flag overrides so C optimization settings apply correctly during VS Code builds.

1542834

Resolved an issue where connected debug adapters were not detected or listed in the VS Code Devices view.

1534663

Fixed RTT Terminal launch failures when using custom boards or Mini debug adapters requiring explicit device IDs.

1557571

Fixed workspace import issues on macOS where v6 workspaces failed to load in the VS Code extension.

1563784

Fixed an issue where debugging custom board projects failed or did not stop at the application entry point.

1565358

Fixed an issue where Wi-Fi projects imported from Simplicity Studio 5 could not be debugged in VS Code.

1557531

Improved flash and debug compatibility handling to allow user override for compatible but mismatched parts.