有源蜂鸣器：内部自带振荡源，将正负极接上直流电压即可持续发声，频率固定
无源蜂鸣器：内部不带振荡源，需要控制器提供振荡脉冲才可发声，调整提供振荡脉冲的频率，可发出不同频率的声音
之前在STM32...unsigned char code Music[]={
H2,4,
M7,4,
H1,4,
M6,4,
H2,4,
M7,4,
H1,4,
M6,4,
// // 注释部分是高潮的前面部分...,
//
M1,2,
M2,2,
M7,2,
M1,2+4+2,
M7,2,
M1,2,
M2,2,
M7,2,
M1,2+4+2,
M2,2,
M3,2,
M2,2,...M3,2,
M2,2,
M3,4+2,
M2,2,
M3,4,
M5,4,
M3,4,
M6,2,
M7,2,
//
M1,2,
M2,2,
M7,2,
M1,2+4+...2,
M7,2,
M1,2,
M2,2,
M7,2,
M1,2+4+2,
M2,2,
M3,2,
M2,2,
M3,2,
M2,2,
M3,4+2,
M2,2,
M3,4
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