这是无刷直流电机开环控制程序，包括了PWM控制模块，定时器模块，霍尔感应反馈模块以及串口调试模块等-This is a brushless DC motor open-loop control program, including the PWM control module, timer module, the Hall sensor feedback module and serial debugging module

对步进电机驱动，并实时显示转速，运用反馈，调节转速。-Stepper motor drive, and display the speed, the use of feedback, adjust the speed.