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+# aes67-ESP32-P4
+
+AES67 sender on a Waveshare ESP32-P4-ETH (PoE). Sources: Spotify Connect (cspot) and HLS/m3u8, with failover. Riedel-style web UI and a reusable AES67 core (PTP, RTP TX, SDP/SAP, VLAN, syslog, health) meant for later AES67 projects.
+
+Repo: https://gitea.apointless.space/bsncubed/aes67-ESP32-P4
+
+## Read first
+- `docs/aes67-core-base.md`: reusable core. Config schema, API, PTP (roles, Riedel defaults, status fields), AES67 TX/SDP/SAP, VLAN, syslog, temperatures, component layout.
+- `docs/hardware-and-design-notes.md`: board pinout, chip revision caveat, project pipeline (cspot/HLS), failover, player API.
+- `web/index.html`: finished web UI (single file). It is the API contract; firmware must match the JSON it reads and writes.
+
+## Working rules
+- **One change at a time** ("one fuckup at a time"). Change or test one variable per step; never stack several fixes or hypotheses. If something breaks, go back to the last known-good state.
+- Follow the build order below. Finish and verify a step on hardware before starting the next.
+- After every change: `idf.py build`, flash, and check the serial monitor output. Show the relevant log lines.
+- Don't mark a step done until it has been verified on the board.
+- Keep core and project separate: `components/aes67_*` must not depend on `main/` (sources/player). Project code plugs in through the config, status and route registries.
+- `web/index.html`: keep the CORE / PROJECT markers. If the firmware needs an API change, change the doc and the page together.
+- Small, focused commits per step.
+
+## Toolchain
+- ESP-IDF 5.5 or later (needed for the P4 and for `examples/network/vlan_support`). Target `esp32p4`.
+- `idf.py set-target esp32p4`, `idf.py build`, `idf.py -p <PORT> flash monitor`
+- Before first build: run `esptool.py chip_id` and `esptool.py flash_id`.
+  - Chip revision < v3.0 (engineering silicon, seen on some of these boards) needs `CONFIG_ESP32P4_SELECTS_REV_LESS_V3=y`.
+  - Flash size is unconfirmed (Waveshare says 32 MB, ESPHome says 16 MB). Set it from the flash_id result.
+- Embed `web/index.html` via `EMBED_TXTFILES` in `aes67_web`.
+
+## Board quick reference (full details in docs)
+- Ethernet: IP101GRI, RMII, PHY addr 1, ref clock from PHY into GPIO50 (EMAC_CLK_EXT_IN).
+  MDC 31, MDIO 52, PHY reset/power 51, TX_EN 49, TXD0 34, TXD1 35, CRS_DV 28, RXD0 29, RXD1 30.
+- No Wi-Fi/BT on this board.
+- On-die temperature sensor only (driver/temperature_sensor.h).
+
+## Build order / status
+- [ ] 0. Check chip revision and flash size; create IDF project and empty component stubs (layout in aes67-core-base.md). Set up the OTA partition table (two app slots, no factory) and PROJECT_VER from git now, so the layout never changes later.
+- [ ] 1. Ethernet: IP101 up, DHCP, IP logged. Ping works.
+- [ ] 2. Web server + config store (cJSON in NVS) + embedded index.html; /api/config, /api/status (stub values), /api/reboot.
+- [ ] 2b. Firmware update: /api/ota upload + rollback self-test. Test: update to a new build, then deliberately flash a build that fails its self-test and confirm it rolls back. After this, flash over the network; keep USB for recovery.
+- [ ] 3. PTP TimeReceiver: lock to an existing GM (Riedel), fill `status.ptp`. Confirm EMAC hardware timestamps work. First check whether the installed ESP-IDF has a PTP example/component for the P4 before writing one.
+- [ ] 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.
+- [ ] 5. SAP discovery, then syslog, then health/temperatures, then VLAN split (one at a time).
+- [ ] 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.
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+# 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.