基于stm32四相步进电机的简单控制，可以通过按键控制四项步进电机正反转的加减速。可以点动旋转.-Based on the stm32 four-phase stepper motor a simple control, button control four stepper motor, acceleration and deceleration. Can Activity rotation.

stm32驱动步进电机，实现加减速，能设定部数-STM32 drive a stepper motor