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Step 6.3: PTP hybrid mode (unicast Delay_Req/Resp), step 6 done

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- As TimeReceiver in ptp.mode hybrid: Delay_Req unicast to the GM (IP
  from its Announce, MAC recorded by the RX hook from its Sync frames),
  unicastFlag set.
- As TimeTransmitter: a Delay_Req with the unicastFlag gets a unicast
  Delay_Resp; multicast requests get multicast replies.
- EMAC timestamps every received frame (en_ts4all): its PTP filter left
  unicast Delay_Req unstamped ("no HW RX timestamp").
- A unicast Delay_Resp's logMessageInterval 0x7F is ignored (use
  ptp.log_delay_req); log_us() clamps to -7..6 (the shift was undefined).
- Verified vs ptp4l --hybrid_e2e 1: board hybrid TimeReceiver 18
  Delay_Req in 20 s, all answered, locked; board TimeTransmitter
  (p1 100): tcpdump shows Sync/Follow_Up/Announce to 224.0.1.129,
  Delay_Req 192.168.192.233 -> .244 [unicast] and Delay_Resp .244 ->
  .233 [unicast] within 0.4 ms; ptp4l s2.
- Docs: TimeTransmitter/hybrid notes; step 6 ticked.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Ben Nicholson
2026-09-25 08:21:09 +10:00
parent dcea39b216
commit 5bd1a20e43
5 changed files with 67 additions and 13 deletions
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@@ -49,7 +49,7 @@ Repo: https://gitea.apointless.space/bsncubed/aes67-ESP32-P4
- [ ] 4. AES67 TX with a 1 kHz test tone, PTP-paced; /stream.sdp. Verify: import SDP on a Riedel Artist 4-wire AES67 port, and check packets/timestamps in Wireshark.
Done and checked with a receiver script (all ptimes, L16/L24, tone phase-locked to PTP); still open: the Riedel import and a Wireshark capture.
- [x] 5. SAP discovery, then syslog, then health/temperatures (one at a time). VLAN split moved to phase 2.
- [ ] 6. PTP TimeTransmitter: BMCA roles (auto/master), hybrid mode.
- [x] 6. PTP TimeTransmitter: BMCA roles (auto/master), hybrid mode.
- [ ] 7. Sources: HLS player, then cspot (Spotify Connect), then failover + /api/player.
- [ ] 8. Mono sum, gain, polish.