Levi Woodard c143db6b68 Fix HID read busy-spin: pass 250ms, not 250ns, to ReadWithTimeout ...

go-hid's ReadWithTimeout takes a time.Duration, so the bare 250 was
250ns, which truncates to a 0 ms hid_read_timeout. On both Linux
(poll) and macOS (cond_timedwait) 0 ms means non-blocking, so the
button loop spun continuously: ~1.2 cores and ~7.5k context
switches/sec at idle, from startup.

Pass 250*time.Millisecond and match hid.ErrTimeout with errors.Is
ahead of the string fallback. Idle CPU drops to ~0%.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016yH8jHn1SNzNnL58CRwTi9
(cherry picked from commit 69d2926a1a)

2026-09-29 18:49:41 -06:00

8.5 KiB

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