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-rw-r--r--README.md6
-rw-r--r--TESTING.md849
2 files changed, 171 insertions, 684 deletions
diff --git a/README.md b/README.md
index d7a53d3..6df4672 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ Scrypted Viewport owns Ethernet, JPEG decode, display, touch input and outbound
## Related docs
-- [`TESTING.md`](TESTING.md) — **the self-contained verification reference.** Status snapshot for every milestone, hardware prerequisites + open unknowns, bench-order playbook, per-milestone `curl` recipes, integration test suite. Start here before flashing anything.
+- [`TESTING.md`](TESTING.md) — **the verification reference.** New-unit bring-up playbook, regression `curl` recipes, outstanding tests, and the performance-review methodology. (All bring-up milestones are ✅ verified; the historical milestone log lives in git history.)
- [`scrypted/README.md`](scrypted/README.md) — Scrypted-side script install + per-viewport binding UI (camera picker, wake triggers, mDNS-discovered host dropdowns).
- [`scrypted/PLUGIN-CONVERSION.md`](scrypted/PLUGIN-CONVERSION.md) — TODO: plan for repackaging the script as a real installable Scrypted plugin (kills the Scripts-sandbox reload-leak machinery, makes deploys scriptable).
@@ -33,9 +33,9 @@ Scrypted Viewport owns Ethernet, JPEG decode, display, touch input and outbound
| --- | --- | --- |
| Firmware (`main/`) | Full path ✅ on hardware: Ethernet, panel, streaming, OTA. Painted = sent = 24 fps at the Unifi medium substream, sub-50 ms glass-to-glass over a raw TCP data socket (:81). Binary ~900 KB, ESP-IDF 5.4 / `esp32p4`. See [What's next](#whats-next) for the measured budget. | Backlog only (task-watchdog counters, multi-camera per viewport, production sealing). |
| Scrypted side (`scrypted/`) | v1.4 Script — DeviceProvider with per-viewport child devices, camera picker with trigger-scoped event subscriptions, live ffmpeg MJPEG streaming over the TCP data socket with prebuffer fast-start (~0.7 s wake-to-video), and built-in mDNS discovery (host dropdowns, auto-naming, auto-heal on DHCP renumber). Verified end-to-end. | v2: repackage the single-file script as an installable plugin — planned in [`scrypted/PLUGIN-CONVERSION.md`](scrypted/PLUGIN-CONVERSION.md). |
-| Hardware | Ethernet pin map confirmed (Waveshare wiki + ESPHome). Hosyond panel architecture confirmed (Pi 7"-style, TC358762 bridge + ATTINY MCU at I²C `0x45`). Jumper wiring documented. | Schematic confirmation needed for DSI FPC pin count, I²C GPIO mapping, BOOT button GPIO, flash size. All gated by [`TESTING.md`'s Hardware prerequisites](TESTING.md#hardware-prerequisites). |
+| Hardware | Ethernet pin map confirmed (Waveshare wiki + ESPHome). Hosyond panel architecture confirmed (Pi 7"-style, TC358762 bridge + ATTINY MCU at I²C `0x45`). All bring-up unknowns resolved — wiring + gotchas in [`TESTING.md`](TESTING.md#new-unit-bring-up). | Per-unit flash-size silkscreen check (16 vs 32 MB) when provisioning new boards. |
-See [`TESTING.md`](TESTING.md) for the full milestone-by-milestone status and the bench-order playbook.
+See [`TESTING.md`](TESTING.md) for the new-unit bring-up playbook, regression recipes, and the outstanding-test backlog.
## Hardware
diff --git a/TESTING.md b/TESTING.md
index 5046ad3..260340a 100644
--- a/TESTING.md
+++ b/TESTING.md
@@ -1,739 +1,226 @@
# Testing & Verification
-This file is the self-contained reference for verifying the firmware on real hardware. It has three layers:
-
-1. **Status snapshot** — at-a-glance state of every milestone.
-2. **Hardware prerequisites** — what to confirm or order before flashing anything.
-3. **Recommended bench order** — the sequence to flip 🟡 → ✅, stage by stage.
-4. **Per-milestone entries** (M1–M9) — acceptance criteria + exact commands/actions + status.
-5. **Integration & system tests** — to run after every per-milestone test passes.
-
-Status legend:
-
-- ⬜ not verified — code not yet exercised at all.
-- 🟡 partial — compiles cleanly, builds against ESP-IDF 5.4 for `esp32p4`, but not yet run on a board.
-- ✅ verified — confirmed on hardware. Annotate with the date and board rev.
+All bring-up milestones (M1–M9: Ethernet/DHCP, HTTP + mDNS, display, config
+persistence, frame push, state + idle timer, touch + outbound POSTs, local
+screens, live TCP stream) are ✅ **verified on hardware**. The
+milestone-by-milestone log — acceptance runs, dates, and the fix notes from
+each bring-up session — lived in this file through v1.4.0; see git history
+(`git log --follow TESTING.md`, last full version at `8eebc0e`) if you need
+it.
+
+What remains here is the forward-looking material:
+
+1. **New-unit bring-up** — provisioning another viewport from parts.
+2. **Regression recipes** — quick `curl` checks for the API surface.
+3. **Outstanding tests** — what has never been run.
+4. **Performance review playbook** — the iterate-and-measure loop for
+ data-plane changes.
> **Iterating on an already-flashed device:** `make ota [VIEWPORT=<host>]`
> builds with a fresh git stamp, pushes over the LAN, and verifies the
> `pending-verify -> valid` OTA sequence (auto-retrying the known
-> first-push silent rollback). The USB commands below are for first
-> flash / bring-up only.
-
----
-
-## Status snapshot
-
-| # | Milestone | Code | HW |
-| --- | --- | --- | --- |
-| M1 | Board Bring-Up — Ethernet + DHCP | ✅ | ✅ |
-| M2 | HTTP + mDNS (`GET /state`) | ✅ | ✅ |
-| M3 | Display Bring-Up (Hosyond panel) | ✅ | ✅ |
-| M4 | Config Persistence (NVS, partial updates) | ✅ | ✅ |
-| M5 | JPEG Frame Push (`POST /frame`) | ✅ | ✅ |
-| M6 | State + Idle Timer (`POST /state`, 409 guard) | ✅ | ✅ |
-| M7 | Touch + Outbound `/state` POST | ✅ | ✅ |
-| M8 | Local Screens + touch long-press | ✅ | ✅ |
-| M9 | Live Stream (raw TCP data socket `:81`) | ✅ | ✅ |
-
----
-
-## Hardware prerequisites
-
-Before flashing anything, confirm or acquire:
-
-| Item | Status as of this writing | How to resolve |
-| --- | --- | --- |
-| Waveshare ESP32-P4-ETH board | shipped | check silkscreen for flash size (16 vs 32 MB) — adjust `sdkconfig.defaults` if 32 |
-| Hosyond 5" 800×480 panel | shipped | n/a |
-| 15-pin Pi-FPC → Waveshare-side DSI adapter cable | **unknown — order before M3** | check Waveshare board DSI connector pin count, buy matching adapter |
-| 4× jumper wires (5V / GND / SDA / SCL) | trivial | bench supply |
-| Ethernet cable + DHCP-serving switch | trivial | LAN already in place |
-| (optional) PoE injector | nice-to-have | for M1/M2 a USB-only power path is fine |
-
-Hardware unknowns — resolved:
-
-1. **DSI FPC pin count on the Waveshare board.** ✅ 22-pin DSI on board; bridge to the panel's 15-pin Pi FPC via a 15→22 adapter cable.
-2. **I²C jumper destinations.** ✅ `PIN_I2C_SDA=7`, `PIN_I2C_SCL=8` confirmed by ATTINY ack at 0x45 + FT5426 ack at 0x38.
-3. **BOOT button GPIO.** ✅ No usable GPIO — ESP32-P4 GPIO 35 strap pin is owned by EMAC TXD1 at runtime; no separate user button is wired on the Waveshare ESP32-P4-ETH. Info-overlay behaviour moved onto touch long-press (≥1.5 s). No factory-reset gesture — that path goes through USB reflash + `idf.py erase-flash`.
-4. **Flash size silkscreen.** `sdkconfig.defaults` declares 16 MB. If your SKU shipped with 32 MB the build still works but you waste half the flash.
-
----
-
-## Recommended bench order
-
-Work through these stages in order. Each stage builds on the previous one's verified state.
-
-### Stage 1 — board comes alive (M1 + M2)
-
-No display, no panel, no jumpers. Just board on Ethernet over USB.
-
-```bash
-source ~/Dev/code/git/esp32/env.sh
-idf.py -p /dev/cu.usbmodem* flash monitor
-```
-
-Check serial for `net_eth: got ip` then `curl http://<ip>/state | jq .` and `dns-sd -B _scrypted-viewport._tcp local.`. If both pass, flip M1 + M2 to ✅. Stop here if you hit any issue — debug Ethernet before adding more variables.
-
-### Stage 2 — display panel (M3) ✅
-
-Look for `panel MCU id 0xc3 — Pi v1.1 architecture ack'd`, `TC358762 bridge configured`, and `DSI up: 800x480 26 MHz, 1-lane 600 Mbps, non-burst` in the serial log. Info screen visible on tap-wake.
-
-### Stage 3 — protocol (M4 + M5 + M6)
-
-No new wiring. POST `/config`, send a JPEG, exercise wake/sleep, watch the idle timer fire. Run through the per-milestone curls below.
-
-### Stage 4 — touch (M7)
-
-Tap the screen. Confirm the FT5426 acks on I²C in the boot log. Stand up the flask receiver, configure the device to point at it, and watch outbound `/state` POSTs arrive.
-
-### Stage 5 — local screens + BOOT (M8)
-
-Visual: fresh boot shows IP screen; wake shows loading screen; tap-press of the BOOT button overlays IP. If BOOT GPIO is wrong, the screens still work — only the button feature stays cold.
-
-### Stage 6 — end-to-end with Scrypted
-
-Paste `scrypted/scrypted-viewport.ts` into Scrypted's Scripts plugin, add a viewport device with the binding (camera picker dropdown), trigger the bound camera, watch the panel light up.
-
-### Stage 7 — integration
-
-Run the suite at the bottom of this file (races, failures, longevity, etc.).
-
----
-
-## M1 — Board Bring-Up
-
-**Acceptance**: device gets a DHCP lease over Ethernet and logs its IP.
-
-**How to verify**
-
-```bash
-source ~/Dev/code/git/esp32/env.sh
-idf.py -p /dev/cu.usbmodem* flash monitor
-```
-
-Expected log within ~5–10s of boot:
-
-```
-I (xxx) viewport: Scrypted Viewport boot
-I (xxx) net_eth: ethernet driver started, waiting for link + DHCP
-I (xxx) net_eth: link up, mac xx:xx:xx:xx:xx:xx
-I (xxx) net_eth: got ip 192.168.x.x gw 192.168.x.1 netmask 255.255.255.0
-I (xxx) viewport: online at 192.168.x.x
-```
-
-Cross-check from another host:
-
-```bash
-ping 192.168.x.x
-```
-
-**Status**: ✅ verified 2026-06-14 on Waveshare ESP32-P4-ETH (Amazon B0FN7JQ2V8, 32 MB PSRAM, 32 MB flash silkscreen, IDF v5.4.1). DHCP lease landed at 10.0.13.83. Three fixes were needed during bring-up — see commit 220ee4c:
-> 1. **RXD0 / RXD1 GPIO swap**: ESP32-P4 EMAC iomux fixes RXD0=29, RXD1=30. The original pin map had them transposed.
-> 2. **mDNS hostname order**: `mdns_service_add()` returns INVALID_ARG if hostname isn't set yet. Now init → hostname → service_add → TXT.
-> 3. **`app_main` best-effort everywhere**: any one missing subsystem (no LAN, no panel) used to abort the boot. Now each is independent; final log line summarizes which letters of `EMHDJTB` came up.
-
-**Link-loss & recovery also verified 2026-06-14** — important for PoE-only deployments where a switch reboot or briefly down VLAN won't kill power but will yank the link:
-
-```
-W (748316) net_eth: link down # cable pulled
-I (916316) net_eth: link up, mac e8:f6:0a:e0:90:94 # cable plugged back in (3 min later)
-I (924816) net_eth: got ip 10.0.13.83 gw 10.0.13.1 netmask 255.255.255.0 # DHCP renewed ~8.5s after link-up
-```
-
-Same boot throughout (uptime kept climbing past the disconnect, no reset). mDNS responder task and HTTP server stayed alive through the outage and resumed serving the moment DHCP came back. `free_heap` / `free_psram` identical to pre-disconnect — no leak from the cycle.
-
----
-
-## M2 — HTTP + mDNS
-
-**Acceptance**: `GET /state` returns JSON; mDNS service is discoverable.
-
-**How to verify**
-
-After flash, from a host on the same LAN:
-
-```bash
-# Direct call by IP (always works):
-curl http://<device-ip>/state | jq .
-
-# mDNS hostname (requires OS-level .local resolution: macOS Bonjour, Linux nss-mdns):
-curl http://viewport.local/state | jq .
-
-# Service discovery browse (preferred — what Scrypted will do, no OS .local resolver needed):
-dns-sd -B _scrypted-viewport._tcp local. # macOS
-avahi-browse -r _scrypted-viewport._tcp # Linux
-```
-
-Expected `/state` body on a fresh device (no `/config` posted yet):
-
-```json
-{
- "name": null,
- "version": "0.1.0",
- "configured": false,
- "state": "asleep",
- "uptime_ms": 12345,
- "last_frame_ms_ago": null,
- "frames_received": 0,
- "decode_errors": 0,
- "state_post_failures": 0,
- "resolution": "480x800",
- "ip": "192.168.x.x",
- "free_heap": 200000,
- "free_psram": 30000000
-}
-```
-
-Expected mDNS browse output should show a `_scrypted-viewport._tcp` instance with TXT records `version=`, `resolution=`, `orientation=`, `name=` (MAC-derived default until `/config` names it), and `mac=` (since v1.4.0 — the stable identity the Scrypted script's discovery/auto-heal matches on).
-
-**Status**: ✅ verified 2026-06-14 alongside M1.
-
-- `GET http://10.0.13.83/state` returned the full spec JSON: `name=null, configured=false, state=asleep, resolution=480x800, ip=10.0.13.83, free_psram=31730048, ...`.
-- `dns-sd -B _scrypted-viewport._tcp local.` on macOS surfaced one instance named `viewport`.
-
-Bare-board behavior (no panel, no ethernet) was also verified — the device boots cleanly and prints a summary like `boot complete — subsystems [EMHdJ-B] ip=(no link)` (lowercase `d` = display down because no panel attached; `-` for touch because it shares the panel I²C bus).
-
----
-
-## M3 — Display Bring-Up
-
-**Acceptance**: panel powers on, MCU at I2C 0x45 responds, color-bar test pattern renders, brightness control works.
-
-**Wiring** (Hosyond 5" 800x480 panel ↔ Waveshare ESP32-P4-ETH)
-
-The Hosyond panel exposes only the 15-pin Pi DSI FPC — no auxiliary GPIO header. **Everything goes through the FPC**: DSI data lanes, panel power (3.3V / 5V / GND), and the I²C bus (SDA / SCL) shared by the on-panel ATTINY MCU at `0x45` and the FT5426 touch at `0x38`. No jumper wires required.
-
-Verified board-side mapping (Waveshare ESP32-P4-ETH wiki + ESPHome device page):
-
-| Signal | DSI FPC | ESP32-P4 GPIO |
-| --- | --- | --- |
-| DSI data lanes / clock | dedicated DSI PHY | (fixed silicon pins) |
-| I²C SDA | FPC pin | **GPIO 7** |
-| I²C SCL | FPC pin | **GPIO 8** |
-| 3.3V / 5V / GND | FPC pins | board rails (no GPIO) |
-| Backlight | I²C register `0x96` on the panel MCU | (no GPIO) |
-| Panel reset / power-on | I²C `REG_POWERON` (`0x85`) on the panel MCU | (no GPIO) |
-
-`PIN_I2C_SDA=7` / `PIN_I2C_SCL=8` in `display.c` already match this. **No code changes needed before flashing.**
-
-DSI connector: 22-pin (Pi 5 / CM4 style). The 15-pin Pi DSI FPC on the panel plugs into a **15→22 pin adapter cable** that goes into the board.
-
-**Bring-up sequence**
-
-1. Power the ESP32-P4 board (USB is fine for bench; PoE/12V in production).
-2. Plug the **15-pin** side of the DSI cable into the Hosyond panel.
-3. Plug the **22-pin** side into the Waveshare DSI connector. (Pi FPCs are easy to install upside-down — make sure the contact side faces the connector lock.)
-4. Reset the board (or `idf.py flash monitor` if you've changed firmware):
-
-```bash
-idf.py -p /dev/cu.usbmodem* monitor
-```
-
-**Expected log**
-
-```
-I (xxx) display: panel MCU id 0xC3 — Pi 7" architecture ack'd
-I (xxx) display: panel powered on
-I (xxx) display: DSI up: 800x480 30 MHz, 2-lane 480 Mbps
-I (xxx) viewport: display up — test pattern on screen
-```
-
-**Visual check**: 8 vertical color bars (white, yellow, cyan, green, magenta, red, blue, black) across the panel. Brightness should look perceptually mid-range (default 80/100 with gamma).
-
-**Failure-mode signals**
-
-- `panel MCU @0x45 unreachable` → either the FPC seating / orientation is wrong (most common — Pi FPCs are easy to install upside-down on either end), the adapter cable doesn't pass I²C straight through, or the panel is one of the rare Waveshare-bundled units with **GT911 touch at 0x5D/0x14** instead of the FT5426 Pi 7" architecture this driver targets (in which case the *panel MCU* check still fails because that variant has no ATTINY at all). No need to suspect DSI yet.
-- I²C ack but no image → DSI cable orientation on the 22-pin side, or `LCD_COLOR_PIXEL_FORMAT_RGB565` byte order if there's something on the panel but garbled.
-- Image but wrong colors → RGB565 byte order; flip to BGR variant.
-- Image but vertical/horizontal sync issues → adjust the `PANEL_*SYNC_*` timings in `display.c`; Pi 7" canonical values are the defaults.
-- Touch ack at `0x38` but no taps → polling task not running, or panel reset state wrong.
-
-**Status**: ✅ verified 2026-06-14 on Waveshare ESP32-P4-ETH + Hosyond 5" panel. ATTINY v1.1 firmware (ID 0xC3) acks; TC358762 bridge configured via 16 DSI Generic Long Writes; DSI 1-lane @ 600 Mbps non-burst; DPI 26 MHz RGB888; info screen renders correctly. Bring-up notes captured in commit 6c1a26b.
-
----
-
-## M4 — Config Persistence
-
-**Acceptance**: `POST /config` persists across reboot; partial-update semantics work.
-
-**How to verify**
-
-```bash
-# Full config:
-curl -X POST -H "Content-Type: application/json" \
- -d '{"viewport":"mudroom","scrypted":"http://host/endpoint/scrypted-viewport","orientation":"landscape"}' \
- http://<device-ip>/config
-
-# Read back:
-curl http://<device-ip>/config | jq .
-
-# Partial update (only brightness):
-curl -X POST -H "Content-Type: application/json" \
- -d '{"brightness":50}' \
- http://<device-ip>/config
-
-# Reboot, then re-read — values should survive:
-curl http://<device-ip>/config | jq .
-```
-
-Also verify validation:
-
-```bash
-# idle_timeout_ms below 5000 (and non-zero) — expect 400:
-curl -i -X POST -H "Content-Type: application/json" \
- -d '{"idle_timeout_ms":1000}' http://<device-ip>/config
-
-# bogus orientation — expect 400:
-curl -i -X POST -H "Content-Type: application/json" \
- -d '{"orientation":"sideways"}' http://<device-ip>/config
-
-# brightness out of range — expect 400:
-curl -i -X POST -H "Content-Type: application/json" \
- -d '{"brightness":150}' http://<device-ip>/config
-
-# scrypted without http:// — expect 400:
-curl -i -X POST -H "Content-Type: application/json" \
- -d '{"scrypted":"scrypted.local"}' http://<device-ip>/config
-
-# Garbage JSON — expect 400:
-curl -i -X POST -H "Content-Type: application/json" \
- -d 'not json' http://<device-ip>/config
-```
-
-Idle-timer disable (`idle_timeout_ms: 0`) is intentionally allowed.
-
-Side-effects to confirm:
-- After `POST /config` with `brightness`: panel brightness changes immediately (if display is up).
-- After `POST /config` with `viewport` or `orientation`: mDNS TXT records update; `viewport-<name>.local` resolves; browse shows new TXT.
-- After `POST /config` with both `viewport` and `scrypted` (any order, on any subsequent call): `GET /state` shows `configured: true`, `state: "asleep"`.
-
-**Status**: ✅ verified 2026-06-14. Full POST + partial POST + 5 validation failure modes all returned correctly. Config survives reboot (NVS persistence). `configured: true` was set automatically once both `viewport` and `scrypted` were supplied. Required raising httpd stack from 4 KiB to 8 KiB — the handler's 2 KiB body buffer plus locals were overflowing into the protect page.
+> first-push silent rollback). USB is for first flash only.
---
-## M5 — JPEG Frame Push
-
-**Acceptance**: `POST /frame` paints a 480x800 (portrait, default) or 800x480 (landscape) JPEG. Orientation determines the expected dimensions and the panel-side rotation.
-
-**How to verify**
-
-```bash
-# Default orientation (portrait) — send 480x800:
-curl -X POST -H "Content-Type: image/jpeg" \
- --data-binary @test-480x800.jpg \
- http://<device-ip>/frame
-
-# Then switch to landscape and re-test with an 800x480 JPEG:
-curl -X POST -H "Content-Type: application/json" \
- -d '{"orientation":"landscape"}' http://<device-ip>/config
-
-curl -X POST -H "Content-Type: image/jpeg" \
- --data-binary @test-800x480.jpg \
- http://<device-ip>/frame
-```
-
-Visual: image fills the panel correctly oriented. After paint, `GET /state` shows `frames_received` incremented and `last_frame_ms_ago` populated.
-
-Generate test JPEGs with ImageMagick:
-
-```bash
-# 8 vertical color bars at 480x800 portrait:
-convert -size 60x800 gradient:white-black -duplicate 7 +append test-480x800.jpg
-# or just any 480x800 JPEG:
-convert -size 480x800 plasma: test-480x800.jpg
-convert -size 800x480 plasma: test-800x480.jpg
-```
-
-Negative tests:
-
-```bash
-# Wrong Content-Type — expect 400:
-curl -i -X POST -H "Content-Type: image/png" --data-binary @anything \
- http://<device-ip>/frame
-
-# Oversize — expect 413:
-dd if=/dev/urandom of=big.bin bs=1M count=2
-curl -i -X POST -H "Content-Type: image/jpeg" --data-binary @big.bin \
- http://<device-ip>/frame
-
-# Wrong dimensions — expect 400 with "expected WxH, got WxH":
-convert -size 640x480 plasma: test-640x480.jpg
-curl -i -X POST -H "Content-Type: image/jpeg" --data-binary @test-640x480.jpg \
- http://<device-ip>/frame
-
-# Concurrent posts — second gets 503:
-curl -X POST -H "Content-Type: image/jpeg" --data-binary @test-480x800.jpg \
- http://<device-ip>/frame &
-curl -i -X POST -H "Content-Type: image/jpeg" --data-binary @test-480x800.jpg \
- http://<device-ip>/frame # expect 503 if first is still in flight
-
-# Garbage bytes claiming to be JPEG — expect 400:
-curl -i -X POST -H "Content-Type: image/jpeg" -d 'not a jpeg' \
- http://<device-ip>/frame
-```
-
-After every error: `decode_errors` in `GET /state` should increment.
-
-**Known gap (M6 closes this)**: M5 paints regardless of wake/sleep state. The `/frame` → `409` when asleep rule is added with `POST /state` in M6. Until then, a configured device boots ASLEEP per spec but `/frame` still paints because the state guard isn't wired yet.
-
-**Status**: ✅ verified 2026-06-14. Hardware JPEG decode + paint works end-to-end. Fixing it surfaced two stacked channel-swap bugs (commit 11ad249): the IDF JPEG decoder's `_RGB` element-order emits the RGB565 word in big-endian byte order (we now use `_BGR` for LE), and the ESP32-P4 DSI + TC358762 + Pi panel pipeline wants `[B, G, R]` in memory (we now pack the RGB888 framebuffer accordingly). Symmetric pixels like the white-on-black info screen masked both bugs; saturated solid colours exposed them.
+## New-unit bring-up
+
+### Hardware prerequisites
+
+- **Waveshare ESP32-P4-ETH** — check the silkscreen for flash size;
+ `sdkconfig.defaults` declares 16 MB (a 32 MB SKU works but wastes half).
+- **Hosyond 5" 800×480 Pi-architecture panel** — TC358762 bridge + ATTINY
+ MCU at I²C `0x45`, FT5426 touch at `0x38`.
+- **15→22-pin DSI adapter cable** — the panel's 15-pin Pi FPC into the
+ board's 22-pin (Pi 5 / CM4 style) DSI connector. Everything goes through
+ the FPC: DSI lanes, panel power, and the I²C bus (board side: SDA=GPIO 7,
+ SCL=GPIO 8 — already what `display.c` uses). No jumper wires.
+- Ethernet to a DHCP-serving switch; USB for the first flash; PoE optional.
+- There is **no usable user button** (GPIO 35 is owned by EMAC TXD1);
+ everything is touch — no code or wiring expectations around BOOT.
+
+### Sequence
+
+1. **Board only** (no panel). First flash over USB:
+
+ ```sh
+ source ~/Dev/code/git/esp32/env.sh
+ idf.py set-target esp32p4
+ idf.py build
+ idf.py -p /dev/cu.usbmodem* flash monitor
+ ```
+
+ Expect `net_eth: got ip <addr>` within ~10 s of link-up. Then from
+ another host: `curl http://<ip>/state | jq .` and
+ `dns-sd -B _scrypted-viewport._tcp local.` (the TXT should carry
+ `version=`, `resolution=`, `orientation=`, `name=<mac-derived>`,
+ `mac=`). A bare board with no panel/Ethernet still boots — the flag
+ summary logs degraded subsystems in lowercase instead of panicking.
+
+2. **Attach the panel** (power off first). Pi FPCs install upside-down
+ easily — contact side faces the connector lock, both ends. On boot
+ expect `panel MCU id 0xc3 — Pi v1.1 architecture ack'd`,
+ `TC358762 bridge configured`, `DSI up: 800x480 26 MHz, 1-lane 600 Mbps,
+ non-burst`, and the info screen after a brief boot flash (the FT5426
+ needs one lit scan cycle before it reports touches).
+
+3. **Touch**: short tap toggles wake/sleep; ≥1.5 s hold shows the info
+ overlay for 15 s.
+
+4. **Scrypted**: in the Scrypted Viewport script, "+ Add Device" — the new
+ unit appears in the host dropdown (name auto-fills from mDNS). Pick a
+ camera and triggers, save, tap the panel or ring the doorbell → live
+ video. See [`scrypted/README.md`](scrypted/README.md).
+
+### Failure-mode signals (panel bring-up)
+
+- `panel MCU @0x45 unreachable` → FPC seating/orientation (most common),
+ an adapter cable that doesn't pass I²C through, or the rare panel
+ variant with GT911 touch at `0x5D`/`0x14` instead of the Pi 7"
+ architecture this driver targets (that variant has no ATTINY at all).
+ Don't suspect DSI yet.
+- I²C acks but no image → DSI cable orientation on the 22-pin side.
+- Image but wrong colors → BGR/RGB element order (see `jpeg_decoder.c` /
+ `display.c` notes — the pipeline wants `[B, G, R]` in memory).
+- Image with sync artifacts → `RPI_*` timing constants in `display.c`
+ (canonical Pi 7" values are the defaults).
+- Touch acks at `0x38` but no taps → the panel hasn't had a lit scan
+ cycle yet (handled by the boot wake-flash) or reset-line state.
---
-## M6 — State + Idle Timer
-
-**Acceptance**: `POST /state` toggles wake/sleep; `/frame` is 409 when asleep; idle timer fires after `idle_timeout_ms`.
-
-**How to verify**
+## Regression recipes
-First make sure the device is configured (M4 must be done):
+Quick checks for the API surface after firmware changes. `V=http://<ip>`.
-```bash
-curl -X POST -H "Content-Type: application/json" \
- -d '{"viewport":"mudroom","scrypted":"http://host/cb","idle_timeout_ms":10000}' \
- http://<device-ip>/config
-```
-
-Wake / sleep:
-
-```bash
-# Backlight off:
-curl -i -X POST -H "Content-Type: application/json" \
- -d '{"state":"sleep"}' http://<device-ip>/state
-# expect: 204
-
-# Backlight on (loading-screen placeholder until M8):
-curl -i -X POST -H "Content-Type: application/json" \
- -d '{"state":"wake"}' http://<device-ip>/state
-# expect: 204
-
-# Idempotency: repeating either is also 204 with no side effects:
-curl -X POST -H "Content-Type: application/json" \
- -d '{"state":"wake"}' http://<device-ip>/state
-curl -X POST -H "Content-Type: application/json" \
- -d '{"state":"wake"}' http://<device-ip>/state
-# Both: 204
-```
+**Config validation** (each expects `400`):
-`/frame` while asleep returns 409:
-
-```bash
-curl -X POST -H "Content-Type: application/json" \
- -d '{"state":"sleep"}' http://<device-ip>/state
-curl -i -X POST -H "Content-Type: image/jpeg" \
- --data-binary @test-480x800.jpg \
- http://<device-ip>/frame
-# expect: HTTP/1.1 409 Conflict, body "device asleep — POST /state ..."
-```
-
-Idle timer:
-
-```bash
-curl -X POST -H "Content-Type: application/json" \
- -d '{"state":"wake"}' http://<device-ip>/state
-sleep 12 # idle_timeout_ms was set to 10000 above
-curl http://<device-ip>/state | jq .state
-# expect: "asleep"
-```
-
-When the timer fires, the serial log should print:
-
-```
-I (xxx) state: idle timer expired — sleeping
-I (xxx) state: ASLEEP
-```
-
-Disabling the idle timer:
-
-```bash
-curl -X POST -H "Content-Type: application/json" \
- -d '{"idle_timeout_ms":0}' http://<device-ip>/config
-curl -X POST -H "Content-Type: application/json" \
- -d '{"state":"wake"}' http://<device-ip>/state
-sleep 70
-curl http://<device-ip>/state | jq .state
-# expect: still "awake"
-```
-
-Resetting on `/frame`: every successful paint restarts the idle timer.
-
-```bash
-# Set short idle, then keep painting to keep awake:
-curl -X POST -d '{"idle_timeout_ms":10000}' \
- -H "Content-Type: application/json" http://<device-ip>/config
-curl -X POST -d '{"state":"wake"}' \
- -H "Content-Type: application/json" http://<device-ip>/state
-for i in 1 2 3 4 5; do
- sleep 8
- curl -X POST -H "Content-Type: image/jpeg" \
- --data-binary @test-480x800.jpg http://<device-ip>/frame
-done
-curl http://<device-ip>/state | jq .state # expect "awake"
-```
-
-`POST /state` always works regardless of whether `/config` has been posted — `state` is just the screen's awake/asleep, decoupled from the `configured` flag. Outbound POST-to-Scrypted is the part gated on a scrypted URL being present.
-
-Bad input:
-
-```bash
-curl -i -X POST -d '{"state":"middle"}' \
- -H "Content-Type: application/json" http://<device-ip>/state # 400
-curl -i -X POST -d 'not json' \
- -H "Content-Type: application/json" http://<device-ip>/state # 400
+```sh
+curl -i -X POST -d '{"idle_timeout_ms":1000}' -H 'Content-Type: application/json' $V/config
+curl -i -X POST -d '{"orientation":"sideways"}' -H 'Content-Type: application/json' $V/config
+curl -i -X POST -d '{"brightness":150}' -H 'Content-Type: application/json' $V/config
+curl -i -X POST -d '{"scrypted":"no-scheme"}' -H 'Content-Type: application/json' $V/config
+curl -i -X POST -d '{"viewport":"'$(python3 -c 'print("x"*60)')'"}' -H 'Content-Type: application/json' $V/config # >54 chars — mDNS label limit
+curl -i -X POST -d 'not json' -H 'Content-Type: application/json' $V/config
```
-**Known gap (M7 closes this)**: when the idle timer fires the device transitions to ASLEEP locally but does NOT yet POST `{viewport,state:sleep}` to `<scrypted>/state`. That outbound POST lands with `state_client` in M7.
+Valid partial updates merge atomically, persist across reboot (NVS), apply
+brightness immediately when awake, and refresh the mDNS hostname + TXT on
+name/orientation changes. `idle_timeout_ms: 0` is intentionally allowed
+(never-sleep).
-**Status**: ✅ verified 2026-06-14. Wake/sleep toggle 204, idempotent repeats 204, `/frame` while asleep returns 409 with expected body, bad inputs 400, idle timer fires after `idle_timeout_ms`, `idle_timeout_ms:0` correctly disables the timer.
+**Frame push** (test images: `convert -size 480x800 plasma: t.jpg`):
----
-
-## M7 — Touch + Outbound `/state` POST
-
-**Acceptance**: tap toggles wake/sleep locally; idle timer firing posts sleep; device POSTs `{viewport,state}` to `<scrypted>/state` for every local transition.
-
-**Test receiver** (run on the host you'll point `scrypted` at):
-
-```bash
-# Single-file flask receiver that echoes every POST:
-pip install flask
-cat > /tmp/recv.py <<'EOF'
-from flask import Flask, request
-app = Flask(__name__)
-def state():
- print("RX", request.get_json())
- return "", 204
-app.run(host="0.0.0.0", port=11080)
-EOF
-python3 /tmp/recv.py
-```
-
-Configure the device:
-
-```bash
-curl -X POST -H "Content-Type: application/json" \
- -d '{"viewport":"mudroom","scrypted":"http://<host>:11080","idle_timeout_ms":10000}' \
- http://<device-ip>/config
+```sh
+curl -i -X POST -H 'Content-Type: image/jpeg' --data-binary @t.jpg $V/frame # 204 awake, 409 asleep
+curl -i -X POST -H 'Content-Type: image/png' --data-binary @t.jpg $V/frame # 400
+curl -i -X POST -H 'Content-Type: image/jpeg' -d 'not a jpeg' $V/frame # 400, decode_errors++
+# wrong dimensions -> 400 "expected WxH, got WxH"; >1MB -> 413; concurrent second POST -> 503
```
-**Tap dispatch**
+**State machine**:
-- Tap while asleep → device wakes; receiver prints `RX {'viewport': 'mudroom', 'state': 'wake'}`.
-- Tap while awake → device sleeps; receiver prints same with `state: 'sleep'`.
-- Idle timer expires (10s here) → receiver prints `state: 'sleep'`.
-
-Each successful POST also logs on serial:
-
-```
-I (xxx) state_client: POST http://<host>:11080/state {state:wake} -> 204
+```sh
+curl -i -X POST -d '{"state":"wake"}' -H 'Content-Type: application/json' $V/state # 204; repeat = 204 no-op
+curl -i -X POST -d '{"state":"middle"}' -H 'Content-Type: application/json' $V/state # 400
+# idle timer: set idle_timeout_ms=10000, wake, wait 12s -> /state reports "asleep"
+# and the Scrypted script logs the device's sleep callback
```
-**Failure path**
-
-- Stop the receiver, then tap. Serial:
-
- ```
- W (xxx) state_client: POST http://<host>:11080/state failed: err=ESP_OK status=-1
- ```
-
- Then `GET /state` shows `state_post_failures` incremented.
-
-- Local state change still happens (backlight toggles). The POST is best-effort, not a precondition.
-
-**Depth-1 queue with replace-on-full**
-
-Tap rapidly (faster than the receiver can ack) and confirm the receiver only sees the most recent state transition between in-flight POSTs. Intermediate flips are coalesced. With a 1s receiver delay, only the final state of each ~1s window should hit the receiver.
-
-**No POST when Scrypted-initiated**
-
-- `curl -X POST -d '{"state":"sleep"}' /state` — receiver should print **nothing** (Scrypted already knows it initiated).
-- Same for `/state {wake}` and `/frame` (asleep → 409, no callback either).
-
-**No POST when no scrypted URL is set**
-
-- Before `/config` provides a Scrypted URL, tapping the screen does nothing outbound (no Scrypted URL to call). No queue entries dropped to disk.
-
-**Status**: ✅ verified 2026-06-14. FT5426 acks at 0x38; short tap toggles awake/sleep, ≥1.5s hold opens the info overlay. Outbound `/state` POST gated on configured flag (untested without Scrypted).
-
----
-
-## M8 — Local Screens + touch long-press
-
-**Acceptance**: info screen on first boot; loading screen on every wake; long-press shows the info overlay.
-
-**Visual checks (panel-attached)**
-
-- Fresh flash → screen shows the info screen (~17 lines of `label value` pairs, white on black, auto-scaled). With no `/config` posted it reports the MAC-derived default name, `config no`, `state asleep`, `scrypt none`.
-- `POST /config` with viewport + scrypted → device transitions to ASLEEP, backlight off.
-- `POST /state {state:wake}` (or tap) → backlight on, `Loading...` centered until the first `/frame` lands.
-- `POST /frame` while AWAKE → loading screen replaced by the JPEG.
-- **Long-press (≥1.5s)** at any state → info overlay for 15 s with the full current config + state dump (name, host, ip, state, config, scrypt, orient, bright, idle, fw, up, frames, errs, heap, psram).
-- `POST /state {state:sleep}` (or idle timeout, or tap-while-awake) → backlight off.
-
-**Touch gestures** (no hardware button — see Hardware note)
-
-- Short tap (<500 ms): toggle wake / sleep.
-- Long-press (≥1.5 s): info overlay for 15 s.
-- No factory-reset gesture. Use USB + `idf.py erase-flash` to clear NVS.
-
-**Hardware note**: ESP32-P4's strap pin GPIO35 is owned by EMAC TXD1 at runtime, and the Waveshare ESP32-P4-ETH doesn't expose any separate user button on a free GPIO. Both BOOT-button behaviours moved onto the touch panel (see M7).
+**OTA**: `make ota` (full loop) or `make verify` after a manual push. The
+acceptance criterion: a fresh boot must show `ota_state=pending-verify`
+before flipping to `valid`; `valid` at low uptime = silent rollback to the
+old slot.
-**Negative / edge**
-
-- Info overlay during AWAKE: the overlay paints over the live frame. Scrypted's next `/frame` (within ~1s in a normal stream) overwrites it. Acceptable: the operator sees the info for ≤ 1 frame interval then the live view resumes.
-- Info overlay during ASLEEP: backlight comes on for the overlay, then expires back to sleep when the 15 s timer fires.
-- Font fallback: any character outside the supported set (digits, period, colon, dash, slash, `L`, lowercase a–z, space) renders as blank. Info-screen labels and IPv4 strings are all covered.
-
-**Status**: ✅ verified 2026-06-14. Info screen renders the full config + state dump; loading screen shown on wake when configured; info overlay returns to prior state when its 15 s timer expires.
+**Device-initiated POSTs**: tap the panel — the script logs
+`recv "<name>" -> wake (device-initiated)` and `state_post_failures` in
+`/state` stays flat (each POST gets its 204 within the device's 1 s
+timeout). Transitions Scrypted itself initiated produce no callback.
---
-## M9 — Live Stream (raw TCP data socket `:81`)
-
-**Acceptance** (as designed: ≥ 10 fps): sustained live video from a real camera through Scrypted to the panel.
-
-**What shipped** (the design changed from the original `POST /stream` chunked-HTTP idea): a long-lived raw TCP connection to port 81 carrying length-prefixed JPEGs (16-byte `VPRT` v1 header — magic, length, seq, event-timestamp), received by a dedicated recv-task and handed to a decode/paint task through a 3-buffer PSRAM ring with drop-oldest semantics. See the README's *Measured per-frame budget* and *TCP window + EMAC tuning* sections for the architecture and numbers.
-
-**How to verify**: trigger a camera event (or tap the panel) with the Scrypted script installed; watch the script's 10 s stream-health log and `curl http://<ip>/state | jq .stream` for the firmware's 30-frame windows.
-
-**Status**: ✅ verified on hardware (stream server `d1c8d45` recv/decode task split; TCP window + EMAC RX pool tuning follow-up). Steady state at the Unifi medium substream: **painted = sent = 24 fps**, wire 74 Mbps avg, glass-to-glass ~40–100 ms, no drops/flushes, `decode_errors=0` across thousands of frames. Re-confirmed 2026-07-18 during the v1.4.0 verification (24 fps painted, g2g ~100 ms on the first windows of a cold start).
+## Outstanding tests
+
+Never run — the remaining verification backlog:
+
+- **Mid-frame cable pull**: yank Ethernet during an active stream; expect
+ idle-sleep after `idle_timeout_ms`, clean recovery on reconnect.
+ (Idle-state link loss/recovery was verified during bring-up.)
+- **24 h soak**: slow stream, verify `free_heap` / `free_psram` stable and
+ `decode_errors` flat.
+- **Frame storm**: 30 min at max sustainable fps; no watchdog bites, no
+ resets.
+- **Brown-out**: PoE at the edge of spec; device must reboot cleanly
+ without NVS corruption.
+- **Multi-viewport**: needs a second physical unit — per-name callback
+ routing, discovery listing both, events on one camera not waking the
+ other viewport.
+- **Depth-1 outbound queue coalescing** under the real script (verified
+ during bring-up against a test receiver only): rapid taps should
+ collapse to the final state per in-flight window.
+
+Race handling (concurrent tap vs Scrypted POST, mid-stream tap-to-sleep,
+stale-timer-vs-fresh-wake) has been exercised continuously in real use
+since bring-up; a DHCP-renumber recovery via the script's mDNS auto-heal
+was explicitly verified 2026-07-18 (`host 10.0.13.99 -> 10.0.13.83
+(mdns auto-heal)`).
---
-## Integration & system tests (post-M9)
-
-Run these once all milestones are implemented and individually verified. The point is to exercise races, edge cases, and longevity that single-milestone tests miss.
-
-### A. End-to-end with Scrypted
-
-- Real Scrypted-side Script (M7's scope): doorbell-event → `/state {wake}` → frame stream → idle timer fires → `/state {sleep}` callback → Scrypted stops.
-- Bound camera switching: change the binding in Scrypted, confirm next wake routes to the new camera.
-
-### B. Race conditions
-
-- Concurrent tap-while-Scrypted-POSTs-`/state`: spam both, confirm the device converges (mutex serializes; last-write-wins). Use the wake/sleep counters in `/state` to track transitions.
-- Mid-stream tap-to-sleep: while Scrypted is streaming frames, tap to sleep. Inflight `/frame` should return 409. Confirm no half-painted frames, no re-wake.
-- Idle-timeout coincides with a fresh tap-wake: the second event wins. Verify by repeating with timing jitter.
-- Stale Scrypted sleep timer races a fresh wake callback: Scrypted-side `cancelPendingSleep` must work — if a stale sleep lands after a wake, viewport sleeps; user taps again; recovery in one extra tap.
-
-### C. Failure modes
-
-- Cable pull mid-frame: device idle-sleeps after `idle_timeout_ms`. On reconnect, mDNS re-advertises; Scrypted re-finds and continues. (Link-loss/recovery part verified 2026-06-14 with the device idle — see M1 section. Mid-frame variant still pending.)
-- Scrypted unreachable on tap: device still toggles backlight, `state_post_failures` increments. Recovery: Scrypted comes back, next tap syncs.
-- DHCP lease change: device gets new IP, re-advertises via mDNS. The script's next 5-minute register fails against the stale host, which triggers its mDNS auto-heal — browse, match by `mac` TXT, rewrite host, retry. Verified 2026-07-18 by saving a wrong IP: `host 10.0.13.99 -> 10.0.13.83 (mdns auto-heal)`.
-- `/state_post_failures` count should be observable via `GET /state`.
-
-### D. Longevity
-
-- 24h soak with a slow camera stream (~1 frame every 10s): verify no memory leaks (`free_heap` / `free_psram` stable in `/state`), no decode_errors growing.
-- Frame storm: 30 minutes at max sustainable fps. Verify watchdog never fires, no resets.
-
-### E. Power & boot
-
-- PoE injector cycle: device boots clean, gets DHCP, re-registers via mDNS, no manual intervention needed.
-- Brown-out (PoE on edge of spec): device should reboot cleanly, not corrupt NVS.
-
-### F. Negative protocol
-
-- Garbage JSON to `/config` → 400.
-- `/frame` with `Content-Type: image/png` → 400.
-- `/state` with `{"state":"middle"}` → 400.
-- `/frame` with body > 1 MB → 413.
-- Two concurrent `/frame` posts → one wins, the other 503.
-
-### G. Multi-viewport
-
-Once at least two physical units are configured: confirm each routes its callback to Scrypted with its own `viewport` name; confirm Scrypted's discovery map has both IPs; confirm a camera event on the wrong-named viewport is correctly ignored on the right one.
-
## Performance review playbook
-Repeatable methodology for "is the device still hitting its baseline" and "where did the time go." Run after every commit that touches the data plane.
+Repeatable methodology for "is the device still hitting its baseline" and
+"where did the time go." Run after every commit that touches the data
+plane. Baseline (Unifi medium substream, `-q:v 1`): **painted = sent =
+24 fps**, wire ~74 Mbps avg, g2g ~40–100 ms, zero drops/flushes.
### Per-session capture
-Three log streams, all timestamped:
-
```sh
# Firmware serial — 30-frame window summaries
idf.py monitor | tee fw-$(date +%s).log &
# /state poll — windowed stats + glass-to-glass anchor
-while true; do
- curl -s http://VIEWPORT_IP/state
- echo
- sleep 1
-done | tee state-$(date +%s).log &
+while true; do curl -s http://VIEWPORT_IP/state; echo; sleep 1; done \
+ | tee state-$(date +%s).log &
# Scrypted plugin console — copy/paste from the web UI when done.
```
-Trigger a wake event (motion or "Wake now" button). Let it run two minutes. Stop captures.
+Trigger a wake (panel tap is the reliable manual trigger; camera events
+otherwise). Let it run two minutes. First window after a stream starts is
+transient — read steady state from the later windows.
-### What the firmware serial says
+### What the firmware serial says (every 30 painted frames)
-Every 30 painted frames:
-
-```
-30 frames over 1.8s: 16.5fps 2.95MB/s avg-jpeg=180KB |
- lock min/avg/max=8/9/12us |
- recv min/avg/max=21000/35000/48000us |
- dec min/avg/max=5100/5600/6200us |
- paint min/avg/max=38/45/61us |
- idle min/avg/max=120/8500/40000us
-```
-
-### What `/state` says (Phase 4 onward)
-
-```json
-{
- "stream": {
- "frames": 30, "bytes": 5400000, "window_us": 1800000,
- "recv_min_us":21000,"recv_avg_us":35000,"recv_max_us":48000,
- "dec_min_us":5100,"dec_avg_us":5600,"dec_max_us":6200,
- "paint_min_us":38,"paint_avg_us":45,"paint_max_us":61,
- "idle_min_us":120,"idle_avg_us":8500,"idle_max_us":40000,
- "last_paint_event_us_low": 2148503712
- }
-}
-```
-
-`last_paint_event_us_low` is the script's monotonic µs low 32 bits at the wake event that produced the most recent painted frame. Glass-to-glass is `(scripts_now_us_low - last_paint_event_us_low)` with 32-bit wrap.
+One line per window with min/avg/max for every stage plus the TCP-window
+decomposition — `wire` (throughput while a body drains; ceiling ≈
+`TCP_WND/RTT`), `hdr_gap` (sender idle), `pend_age` (handoff wait), `recv`,
+`dec`, `paint`, `idle`, `queued`, `recv_calls`, `recv_chunk`,
+`drop-oldest`. The same numbers land in `/state`'s `stream` object
+(semantics documented in `stream_server.h`).
### What the Scrypted console says
-On wake:
-```
-event MotionSensor -> "kitchen": fired at +0ms (wake)
-stream "kitchen": start +0ms
-stream "kitchen": socket connect requested +1ms
-snapshot "kitchen": start +1ms
-snapshot "kitchen": takePicture +320ms
-stream "kitchen": socket connect open +24ms
-snapshot "kitchen": transform +458ms via sharp (217KB)
-snapshot "kitchen": post sent +459ms
-snapshot "kitchen": post acked +551ms ← first user-visible paint
-stream "kitchen": first ffmpeg frame +780ms (jpeg=210KB)
-stream "kitchen": first socket.write +781ms
-```
-
-Every 5s during an active stream:
-```
-firmware "kitchen": fps=16.7 2.99MB/s | recv=...us | dec=...us | paint=...us | idle=...us | g2g=140ms
-```
+Cold-start stamps on each wake (`socket connect open +Xms`,
+`first ffmpeg frame +Xms` — ~0.7 s prebuffered, ~5–6 s cold), then a 10 s
+stream-health line **only when noteworthy** (drops, a buffer-cap flush,
+fw-skipped ≥ 2 fps, painted < 20 fps): sent/painted fps, drop counters,
+socket-write latency percentiles, backpressure duty cycle, `node_buf`
+depth, firmware stage timings, chip temp, and `g2g`.
### Investigation thresholds (alarms)
| Symptom | Probable cause | First check |
|---|---|---|
-| Painted fps sustained < 12 | Upstream starvation | `idle_avg_us` in firmware log — high = ffmpeg behind |
-| `decode_p95 > 8ms` | HW decoder pathology | Recent `decode_errors` delta; PSRAM cache pressure |
-| `paint_p95 > 200µs` | DPI or DMA stall | Look for `DSI` warnings in serial; PSRAM bandwidth |
-| `idle_avg > 50ms` | ffmpeg falling behind | Check Scrypted CPU; try lower-rate camera substream |
-| `g2g_p95 > 500ms` | User-facing regression | Bisect: is the gap in script-side or firmware-side? |
-| Any non-zero `decode_errors` delta | JPEG corruption | TCP retransmit storm or memory corruption |
+| Painted fps sustained < 20 | Upstream starvation or wire regression | `hdr_gap` high = sender idle; `wire_avg` pinned = window-bound |
+| `dec_avg > 8ms` | HW decoder pathology | `decode_errors` delta; PSRAM cache pressure |
+| `paint_max > 200µs` | DPI or DMA stall | `DSI` warnings in serial; `tear_guard_engaged` growth rate |
+| `pend_age` growing window-over-window | Kernel-queue latency backlog | The failure mode that killed the naive TCP-window raise — check EMAC RX pool ≥ `TCP_WND` |
+| `g2g > 500ms` sustained | User-facing regression | Bisect script-side (`node_buf`, bp%) vs firmware-side (recv/dec) |
+| Any `decode_errors` delta | JPEG corruption | TCP retransmit storm or memory corruption |
### Tools
-`grep`, `awk`, `gnuplot`. Anything beyond that is over-engineering for a single device's logs.
+`grep`, `awk`, `gnuplot`. Anything beyond that is over-engineering for a
+single device's logs.