BuzzerAlarm

无源蜂鸣器报警模块 / Buzzer alarm module

硬件需求 / Required Hardware

pwm_buzzer

构造参数 / Constructor Arguments

• alarm_freq: 1500
• alarm_duration: 300
• alarm_delay: 300

功能简介 / Features

• 用于驱动无源蜂鸣器进行报警提示。
• 支持指定频率、持续时间和间隔时间的报警音。
• 提供按音名/八度播放（PlayNote）与任意频率播放（Play）接口。
• 在发生致命错误时自动发出报警声。

This module drives a passive buzzer for alarm indication.

• Supports custom alarm frequency, duration, and delay.
• Provides PlayNote (by note name/octave) and Play (by frequency) interfaces.
• Will play an alarm sound automatically on fatal errors.

主要成员函数 / Main Member Functions

• void Play(uint32_t freq, uint32_t duration)

  • 以指定频率和持续时间发出蜂鸣声。
  • Play a beep at the given frequency and duration.

• void PlayNote(NoteName note, uint32_t octave, uint32_t duration)

  • 以音名+八度指定频率，发出蜂鸣声。
  • Play a musical note (by name/octave) for the given duration.

依赖 / Depends

无（No dependencies）