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STM32 TIM引脚电平解释
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STM32 TIM引脚电平解释
有些问题本身很简单,但是解释了又解释,简单地理解为比较时输出高低电平并不合理,其实几句话就能概括,定时器本身并没高低电平说法,电平存在3种状态,激活/非激活/空闲.只要出于正常工作,就不会出于空闲电平,除非MOE失能,或者BDTR模块起作用,那么强行CHx和CHxN为空闲设定的电平,正常工作时候,匹配后就会进入激活配置的电平.否则进行非激活电平.
激活/非激活电平:LL_TIM_OCPOLARITY_HIGH / LL_TIM_OCPOLARITY_LOW
空闲电平:LL_TIM_OCIDLESTATE_HIGH / LL_TIM_OCIDLESTATE_LOW
设置电平的函数:LL_TIM_OC_ConfigOutput
然而如此简单的问题,直到今天还能看到有人在一些群里讨论了半天.
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