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state_client.{h,c}:
- Worker task drains a depth-1 queue (xQueueOverwrite gives the
replace-on-full semantics from the spec — in-flight POST is never
cancelled; the next queued entry is overwritten by newer state).
- esp_http_client POST to <scrypted>/state with Content-Type application/
json, User-Agent ScryptedViewport/<version>, Connection: close, 1s
timeout. Body: {"viewport":"<name>","state":"wake"|"sleep"}.
- Any non-2xx or transport error increments state_post_failures and is
otherwise ignored. Silently drops if no Scrypted URL is configured.
touch.{h,c}:
- FT5426 capacitive touch on the shared I2C bus at 0x38.
- 30ms polling task; tracks down/up transitions, detects taps as
down-then-up within 500ms with a 150ms debounce.
- On tap, toggles wake/sleep via state_machine_set_local(), which drives
the local transition AND fires state_client_post() at Scrypted.
state_machine adds state_machine_set_local(): runs the same transition
as state_machine_set() then enqueues an outbound POST. Idle-timer
expiry now uses this path so Scrypted sees idle-driven sleeps too
(the spec's "tighten the race with /frame 409" path stays in place as
the fallback).
display.h exposes display_i2c_bus(); touch.c uses it instead of
re-initializing the same I2C port.
app_main starts state_client right after the state machine and starts
touch after display init (touch is skipped if display isn't up since
they share the bus).
CMakeLists.txt: add esp_http_client to REQUIRES.
Build clean against ESP-IDF 5.4 (binary ~860 KB; jumped ~210 KB from
M6 because esp_http_client + cJSON path pulls in tcp_transport, mbedtls,
http_parser).
TESTING.md M7: flask-based test receiver, tap dispatch verification,
failure-path check (kill receiver, confirm counter increments),
queue-coalescing behavior, no-POST-on-Scrypted-initiated, no-POST-
when-unconfigured.
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state_machine.{h,c} — central wake/sleep transitions:
- state_machine_init() creates the esp_timer one-shot for the idle timer.
- state_machine_set(target) is idempotent and atomic. On AWAKE: backlight
on, idle timer (re)armed. On ASLEEP: idle timer cancelled, backlight off.
Rejects with INVALID_STATE when the device is unconfigured.
- state_machine_frame_painted() restarts the idle timer if awake; called
by /frame after each successful paint.
- Idle-timer callback transitions to ASLEEP. TODO M7 hook: outbound POST
{viewport, state:sleep} to <scrypted>/state.
http_api.c:
- POST /state: parse {state}, accept "wake"/"sleep", reject others 400.
Unconfigured device → 409 "device unconfigured". Already-in-state → 204
(idempotent no-op). Successful transition → 204.
- POST /frame: 409 Conflict when state != AWAKE. After successful paint,
call state_machine_frame_painted() so the idle clock keeps resetting
while frames stream.
app_main:
- Initialize state_machine before http_api so the route handler can drive
it from request 0.
- After display_init(), reconcile the panel with the boot state:
UNCONFIGURED → test pattern (placeholder until M8 IP screen)
ASLEEP → display_sleep() so a configured device boots dark
AWAKE → leave on (not reached on fresh boot)
Disable path: idle_timeout_ms=0 in /config means the timer is never armed
and a wake state persists until /state {sleep} or a power cycle.
Build clean against ESP-IDF 5.4 (binary ~645 KB).
TESTING.md M6 expands with idempotency checks, 409-when-asleep, 409-when-
unconfigured, idle-timer firing within idle_timeout_ms+slack, /frame
restarting the idle timer, idle-timer disable via idle_timeout_ms=0, and
the M7 dependency note about the missing outbound sleep POST.
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