bsncubed 685060e12c Step 3.3a: PTP servo, clock locks to the GM
- ptp_hw: ptp_hw_adj_freq() (ETH_MAC_ESP_CMD_ADJ_PTP_TIME, absolute ppb
  vs nominal, clamped +-500 ppm, retried while the addend update is
  busy) and ptp_hw_step() (read + write time).
- ptp_clock: first Sync after a GM is selected seeds the integral with
  the measured rate and steps the clock; then linuxptp-style PI (kp/ki
  from the Sync interval: 0.7/0.3 at 1 s). Re-step above 1 ms. Locked
  after 8 Syncs with |offset| < 1 us, unlocked after 3 above; GM change
  or loss unlocks and keeps the frequency (holdover).
- Verified vs ptp4l: stepped to GM time, locked after ~19 s; locked
  offset within +-510 ns (mostly < 300 ns), correction +39.9 ppm
  (crystal -39.8 ppm), path delay ~10.2 us.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-25 06:15:26 +10:00
2026-09-23 21:52:46 +10:00
2026-09-23 21:51:44 +10:00

aes67-ESP32-P4

AES67 sender for the Waveshare ESP32-P4-ETH (PoE): Spotify Connect and HLS/m3u8 streams out as an AES67 multicast stream, PTP-locked, with a simple web UI for settings and SDP export.

  • docs/aes67-core-base.md — reusable AES67 core design (PTP, RTP, SDP/SAP, VLAN, syslog, web UI contract)
  • docs/hardware-and-design-notes.md — board details and project-specific design
  • web/index.html — web UI (served by the device)
  • CLAUDE.md — working rules and build order

Status: design complete, firmware not started. See the build order in CLAUDE.md.

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