No1 is TIM1,No2 is TIM2,No3 is TIM 3, No4 is TIM 8,the master TIM is TIM1, TIM2/TIM3/TIM8 are slaves; but in the begging of TIM2，have a long time High level。The MCU is stm32f207vct6. My Emaill is 595779344@qq.com; I need help, I need Technical sup...