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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
2026-05-13 21:09:47 +02:00
co-authored by Claude Sonnet 4.6
parent 861a65d4b1
commit ffa568938f
7 changed files with 57 additions and 1 deletions
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examples/companion_radio/ui-new/UITask.h
+2
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@@ -107,6 +107,8 @@ public:
void applyBrightness();
void setBrightnessLevel(uint8_t level);
uint8_t getBrightnessLevel() const { return _node_prefs ? _node_prefs->display_brightness : 2; }
void setBuzzerVolumeLevel(uint8_t level);
uint8_t getBuzzerVolume() const { return _node_prefs ? _node_prefs->buzzer_volume : 4; }
void applyTxPower();
void applyGPSInterval();
uint32_t autoOffMillis() const {