这个是STM32的PWM输出模式，STM32的TIM1模块是增强型的定时器模块，下面的代码，是利用TIM1模块的1、2通道产生一共4路PWM的代码例子，类似代码也可以参考ST的固件库中相应example-This is the PWM output mode of the STM32, the STM32 TIM1 module is the enhanced timer module, the following code, TIM1 module 1,2 channel to produce a total of 4 PWM code examples, similar code can also refer to the ST s firmwarethe corresponding example in the library