数字舵机的驱动控制程序，上位机通过USART控制数字舵机的运动，芯片是STM32F407-Digital servo drive control program, PC via USART control digital servo motion, the chip is STM32F407

利用STM32F407单片机控制舵机精确转动，实验效果正常，可用。(The STM32F4 microcontroller is used to control the precise rotation of the rudder. The experimental results are normal and can be used.)