用于L298N的交流电机驱动，本代码用于步进电机正传两相八拍的程序。-For L298N AC motor drive, the code for stepper motor True Story of two-phase eight-beat program.

基于STM32的数字控制交流调压源，实现交流电压数字可调-STM32-based digital controlled AC voltage regulator