To validate the PIN_PWR rail-cut change (e2c9d8f) without a bench
multimeter, have the device report its previous cycle's awake time
and panel-init time on each poll:
X-Prev-Awake-Ms — millis() at the moment esp_deep_sleep_start
armed, last cycle. Total awake duration
since reset, ~5–10 s steady-state.
X-Prev-Panel-Init-Ms — duration of epd_init() last cycle. Spikes
here would suggest the rail isn't coming
back up cleanly after the GPIO-hold release.
Headers are sent only when the cached NVS values are non-zero (skips
the first boot under this firmware). All call sites marked `// TEMP:
power-monitor` for clean removal once the change is validated. Two
new NVS keys (tm_awk, tm_pin) sit alongside the existing ones; mock
Preferences extended with getUInt/putUInt to match.
Server side logs the headers via `device.poll.power_telemetry`
(separate commit in pictureFrame-webApp).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Three bugs fixed:
- NVS img_id now written before epd_init/draw; new draw_needed flag in NVS
survives power-loss mid-refresh so next boot re-draws from LittleFS instead
of showing stale content
- epd_sleep() now only called when display was initialized this cycle,
preventing a 60 s wait_busy() timeout on every 304 poll
- esp_task_wdt_reset() added to wait_busy() loop so the ~20 s 6-color
refresh no longer triggers the task watchdog
Also extracts normal_operation into operation.h template and adds
a native PlatformIO test suite (16 tests) covering the full response matrix.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
football2801