STM32定时器输出比较模式完全解读，毫秒级定时器配置

/*定时器配置:1.设置定时器最大计数值500002.设置时钟分频系数：TIM_CKD_DIV13.设置预分频：1Mhz/50000=1hz4.定时器计数模式向上计数模式*/TIM_TimeBaseStructure.TIM_Period=0xffff;TIM_TimeBaseStructure.TIM_Prescaler=72;//1M的时钟TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMo