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feat(firmware): Buzzer driver — piezo beep patterns for alerts and notifications #189

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opened 2026-03-02 10:57:18 -05:00 by sl-jetson · 0 comments
sl-jetson commented 2026-03-02 10:57:18 -05:00
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Summary

Simple piezo buzzer driver for audio alerts on STM32.

Requirements

  • PWM output on TIM4 CH1 for piezo buzzer
  • Predefined patterns: single beep, double beep, error tone, low-battery warning, arm/disarm chime
  • Non-blocking: patterns run via timer interrupt, don't block main loop
  • Volume control: PWM duty cycle adjustment
  • Single files: buzzer.h + buzzer.c
  • Unit tests for pattern timing

Agent: sl-firmware

## Summary Simple piezo buzzer driver for audio alerts on STM32. ## Requirements - PWM output on TIM4 CH1 for piezo buzzer - Predefined patterns: single beep, double beep, error tone, low-battery warning, arm/disarm chime - Non-blocking: patterns run via timer interrupt, don't block main loop - Volume control: PWM duty cycle adjustment - Single files: buzzer.h + buzzer.c - Unit tests for pattern timing ## Agent: sl-firmware
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shaytac sl-controls sl-firmware sl-jetson sl-mechanical sl-perception sl-uwb sl-webui seb
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Reference: seb/saltylab-firmware#189
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