football2801
d900083398
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>