A VS Code extension for quickly flashing firmware using pyOCD. The extension auto-discovers ELF files in the workspace, provides target selection, and offers a one-click flash workflow.
Features
Status bar �? Flash button to start flashing with a single click.
Auto-detects .elf files in the workspace, preferring common firmware build folders such as build/**, out/**, Debug/**, Release/**, and bin/**.
If no target is configured, prompts to select one and continues flashing.
Shows a loading notification while fetching pyOCD targets.
Reuses a terminal named PyOCD Loader to keep flash output history.
Requirements
pyocd must be installed and available on PATH (install with pip install pyocd).
Python 3 is recommended.
Usage
Run PyOCD: Select Target from the command palette to choose your board target. If you run PyOCD: Flash without a configured target, the extension will prompt you to select one.
Build your project to produce a .elf file. The extension will look in common build output folders first, then fall back to the rest of the workspace.
Click the �? Flash status bar button on the right or run PyOCD: Flash, pick the ELF file, and wait for the flashing to complete.
Commands
PyOCD: Select Target � choose the board target to use for flashing.
PyOCD: Flash � pick an ELF and flash it to the target (also available via the status bar ? Flash button).
PyOCD: Toggle Reset After Load � toggle the pyocd-one-click-loader.resetAfterLoad workspace setting (when off, --no-reset is passed to pyocd load).
Configuration
pyocd-one-click-loader.target (string): Target name to use for pyOCD (e.g. stm32f407vgtx). Stored at workspace level.
pyocd-one-click-loader.resetAfterLoad (boolean): Whether to reset the target after pyocd load. Defaults to true. Set to false to pass the --no-reset flag to pyocd load.
Note: in a folder workspace these settings are written to the current folder's .vscode/settings.json.
Troubleshooting
No .elf files found: build the project or ensure your ELF is in one of the common output folders, or somewhere else in the workspace.
pyOCD not found: run pyocd --version in a terminal to verify installation.
Contributing
Contributions, bug reports, and feature requests are welcome. Please include reproduction steps and any relevant logs when opening an issue.
See the source code and CHANGELOG for more details.
