NVIC_InitTypeDef NVIC_InitStructure;//声明NVIC初始化临时变量 /* 将NVIC中断优先级组设置为3组*/ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3);//3位抢占优先级可以是：0-7 //1位响应优先级可以是：0和1 /* 1设置中断源 为EXTI1_IRQn */ NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn; /* 设置抢先优占级*/ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; /*设置相应优先级*/ NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; /* 使能这一中断 */ NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; /* 完成以上中断的初始化功能*/ NVIC_Init(&NVIC_InitStructure); /* 2设置中断源 为TIM1_UP_TIM10_IRQn */ NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_TIM10_IRQn; /* 设置抢占优先级*/ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; /*设置相应优先级*/ NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; /* 使能这一中断 */ NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; /* 完成以上中断的初始化功能*/ NVIC_Init(&NVIC_InitStructure); /* 3设置中断源 为USART1_IRQn*/ NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; /* 设置抢占优先级*/ NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3; /*设置相应优先级*/ NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; /* 使能这一中断 */ NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; /* 完成以上中断的初始化功能*/ NVIC_Init(&NVIC_InitStructure);