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Michael A. CojocariandClaude Opus 5.5
32c01f0682
The keyboard controller latches a single key. When one was pending, m9KeyboardPoll read the register up to three times back to back, a "drain" meant to catch a second key, but with one slot a second read can only return nothing or the same key again if the controller has not cleared it yet. Keys came out twice, often and on any key. - One read per poll, as the Launcher and Meshtastic M9 ports do. - The same key reported again within 70 ms of the last accepted one is dropped as the same press. That covers a stale latch read on the next poll and the matrix bouncing on a slow, deliberate press, which the report found worse. Nobody presses one key twice that fast on purpose. The guard runs from the last accepted key, so bounces cannot stretch it. Fixes #625 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016yt7fNCKmafm9LtRjyuUmS