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LiveCheck: Realtime STM32 Silicon Verification In Your Editor

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Forth is the oldest interactive language in the embedded world — you
type a line, the chip compiles it and answers back, right then. For
decades that meant a bare-bones terminal with no editing, no undo, no
file management. Then someone had the obvious-in-hindsight idea: bolt a
modern editor onto it through the Language Server Protocol, and send
each line of Forth to the real silicon over a debug wire.

That's LiveCheck. Every completed line is compiled by the actual chip on
your bench — and the ok/error lands right in the editor gutter, next to
the line you typed. Because it's built on the standard LSP protocol, it
works in any LSP-compatible editor, not just one. And because every
previous line compiled cleanly, the chip checking your line is also
checking your dependencies — no separate dependency management needed.

Then there's the part that turns a crash into a hiccup: when the board
locks up in a loop, you hit control-C, which sends a hardware reset down
the SWD wire at the pin level — the chip doesn't even need to be running
to receive it. The editor spots the reboot banner, knows everything it
checked before is gone, re-uploads the project, and keeps checking.
Self-healing development.

If you've ever wanted to feel a microcontroller respond to you — not
hope it works, but know it because the silicon told you — this is what
that looks like.

https://www.youtube.com/watch?v=9kX0_aMhOJg


Produced with the help of AI without which this video would not have
been possible

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LiveCheck: Realtime STM32 Silicon Verification In Your Editor Terry Porter <techman001@eternal-september.org> - 2026-08-24 07:31 +0000
  Re: LiveCheck: Realtime STM32 Silicon Verification In Your Editor marcel hendrix <mhx@iae.nl> - 2026-08-24 10:41 +0200

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