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feat(power): RX duty-cycle watchdog, noise-floor recal, GPS duty-cycling

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Three power-saving additions, prompted by comparing this fork's existing
RX duty-cycle support against IoTThinks/EasySkyMesh:

- RX duty-cycle watchdog: the SX126x's hardware RX<->sleep sequencer runs
  with no MCU polling, so a desync (a known failure mode) previously had
  nothing watching for it. A new watchdog samples the BUSY pin every tick;
  no transition for too long triggers a soft re-arm, then a full chip
  reset (with cached radio params reapplied, since std_init() resets to
  compiled firmware defaults) if that doesn't clear it. Soft/hard recovery
  counts surface on Tools > Diagnostics > Live as "RXPS wd s/h".

- Noise-floor recalibration during power-save: sampling was previously
  skipped entirely while duty-cycling, freezing int.thresh interference
  detection at whatever the floor was when power-save turned on. Now
  borrows a brief continuous-RX window once a minute to take a fresh
  reading before re-arming duty-cycle.

- GPS duty-cycling (Settings > System > "GPS pwr"): cycles GPS off between
  fixes instead of running it continuously. Each wake waits for a fix
  (capped at 60s) before sleeping again for the configured interval.
  Repurposes the long-dead NodePrefs::gps_interval byte rather than adding
  a new persisted field. A "is anything live using GPS right now" hold in
  UITask keeps GPS continuously on whenever trail recording, live-share,
  an armed Locator, or the Compass/Nearby-navigate view actually need a
  live fix, so none of those features degrade. Locator crossing-state is
  reset on each wake so a still-settling first fix can't read as a false
  geofence crossing.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-08-07 22:14:19 +02:00
co-authored by Claude Opus 5
parent fe02fda897
commit 73744175b0
14 changed files with 386 additions and 31 deletions
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examples/companion_radio/DataStore.cpp
+1
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@@ -264,6 +264,7 @@ void DataStore::loadPrefsInt(const char *filename, NodePrefs& _prefs, double& no
file.read((uint8_t *)&_prefs.buzzer_quiet, sizeof(_prefs.buzzer_quiet));
file.read((uint8_t *)&_prefs.gps_enabled, sizeof(_prefs.gps_enabled));
file.read((uint8_t *)&_prefs.gps_interval, sizeof(_prefs.gps_interval));
if (_prefs.gps_interval > 86400) _prefs.gps_interval = 0; // now a duty-cycle sleep window (secs); 0 = disabled
file.read((uint8_t *)&_prefs.autoadd_config, sizeof(_prefs.autoadd_config));
file.read((uint8_t *)&_prefs.autoadd_max_hops, sizeof(_prefs.autoadd_max_hops));
file.read((uint8_t *)&_prefs.rx_boosted_gain, sizeof(_prefs.rx_boosted_gain));