该程序库适合长鸣型蜂鸣器，利用定时节拍对蜂鸣时间计时，并具有多种鸣响模式，可以作为各种报警的底层函数库使用。-The library is suitable for sounding type buzzer, the timing of the timing beat the buzzer time, and with a variety of ringing mode can be used as the underlying library use in a variety of alarm