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Settings: add buzzer volume control (5 levels, like brightness)

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- NodePrefs: add buzzer_volume field (0=min..4=max, default 4)
- DataStore: persist buzzer_volume at end of prefs file (backward-compat)
- buzzer: setVolume()/getVolume(); applyVolume() sets PWM duty cycle via
  analogWrite() after each rtttl::play() call to control output amplitude
- Settings UI: new BzrVol bar item in Sound section (left/right to adjust)
- UITask: apply saved volume on startup alongside brightness

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Jakub
2026-05-12 09:17:37 +02:00
parent 861a65d4b1
commit ffa568938f
7 changed files with 57 additions and 1 deletions
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examples/companion_radio/MyMesh.cpp
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@@ -864,6 +864,7 @@ MyMesh::MyMesh(mesh::Radio &radio, mesh::RNG &rng, mesh::RTCClock &rtc, SimpleMe
_prefs.gps_enabled = 0; // GPS disabled by default
_prefs.gps_interval = 0; // No automatic GPS updates by default
_prefs.display_brightness = 2; // medium brightness by default
_prefs.buzzer_volume = 4; // max volume by default
_prefs.auto_off_secs = 15; // 15 seconds auto-off by default
_prefs.tz_offset_hours = 0; // UTC by default
_prefs.low_batt_mv = 3400; // auto-shutdown at 3.4V by default