jacob-meacham / rotary-voip / 26405876166

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github

fix(dial): widen debounce, drop settle window — count falls only

Going back to basics. The various settle/quiet-period schemes were
introducing inconsistency (sometimes dropping a real pulse, sometimes
not catching a phantom). Just:

  1. Count falling edges on DIAL_PULSE.
  2. Reject any edge that comes within pulse_debounce of the last
     accepted one (now 30 ms — wide enough to merge bounce clusters
     and transients, narrow enough not to eat real pulses at 100 ms).
  3. Reject any edge that arrives while DIAL_ACTIVE polls HIGH (dial
     at rest — hook switch noise, EMI from elsewhere).

This is the same signal gpiomon shows, with a software debounce
applied. No timestamp gymnastics, no edge-state machine on GPIO22.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

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