PWM控制电机,用PWM控制电机,熟悉定时器Timer A/B的编程方法。用Timer A作为脉宽调制信号产生的定时器.了一个函数F_Pwm(int a,int b) 用于PWM设置，传入两个参数第一个用于频率设置，第二个用于占空比设置。-PWM motor control using PWM motor control, timer Timer familiar with the A/B programming method. A Timer used as a PWM signal to the timer. A function F_Pwm (int a, int b) for PWM setup, the first two parameters into a set for the frequency, duty cycle for the second set.