MCUHex for VS Code

Flash firmware and stream live MCU variables straight from your editor — no heavy IDE, no toolchain setup. Built for ARM Cortex-M (STM32) over an SWD debug probe.

Companion to the MCUHex web app. This extension brings the demo and a quick local trial into VS Code; the full experience (symbol search, array drill-down, saved projects, history) lives on the web.

▶️ Watch the interactive demo — or open the MCUHex panel in VS Code and try it live, embedded right in the sidebar.

How it works

1. Install this extension — on first launch it downloads and starts the MCUHex SDK (a tiny local bridge) for your OS automatically.
2. Plug in an SWD probe (ST-Link, J-Link, DAPLink) into your target board.
3. Flash & monitor — upload firmware and watch live variables update in real time.

The SDK ships for macOS (Apple Silicon) and Windows (x64).

Full version

Symbol search, array/matrix drill-down, saved projects, charts and history are on the web app:

→ mcuhex.vercel.app

Commands

• MCUHex: Open — reveal the MCUHex panel
• MCUHex: Start / Retry SDK — (re)download and launch the local SDK
• MCUHex: Open Full Version (Web) — open the full web app

Privacy

This extension collects no telemetry. The "full version" link carries a passive utm_source tag only.