在0和重载值之间,用户还可以设置一个比较值,PWM就是通过这个比较值来发出的,当计数值小于比较值时,IO口将会为高或者低,当计数值大于比较值时,IO将为输出为另一个电平,即低或高,当TIMER连续计数时,就呈现出PWM波形。比较值的大小将决定PWM的占空比。
主要包括串口初始化、LED初始化、RGB灯珠初始化(即timer0的三个通道初始化)、timer驱动初始化(该timer用于调整RGB灯珠PWM驱动时间)。 RGB灯珠初始化函数如下,在此定义了RGB_TIMER_R、RGB_TIMER_G、RGB_TIMER_B三个灯的控制结构体,并通过timer驱动进行配置。 6.4.3基础 ...
It is best to use a 3 pin header to allow easy connection/disconnection of the servo. In the first exercise you can generate the PWM signal on any output pin so the choice is up to you. Using a timer ...
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