NVIC_InitTypeDef 结构体类型 NVIC_InitStructure结构体变量;结构体员赋值传给初始化函数NVIC_Init(NVIC_InitTypeDef* NVIC_InitStruct);初始化:NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3...