STM32PWM捕获程序，计算周期频率，以及占空比。(STM32PWM capture program, calculate cycle frequency, and duty cycle.)

能够进行STM32PWM输出的程序应用等功能(Can STM32PWM output application functions)

stm32pwm,做项目控制呼吸灯、舵机等经常会遇到的，所以还是很重要的(Stm32pwm is often encountered in project control such as breathing lamp and steering gear, so it is still very important)