不能同时配置RTC和USART中断优先级

fan1974815

野火：你好，我用ISO板子，在同时使用RTC和USART1中断时，发现中断优先级函数NVIC_Init(&NVIC_InitStructure);不能调用两次，如果调用两次程序就进入死循环了，什么原因？请帮忙，代码如下：
void RTC_NVIC_Config(void)
{
        NVIC_InitTypeDef NVIC_InitStructure;
       
        /* Configure one bit for preemption priority */
        NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
       
        /* Enable the RTC Interrupt */
        NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn ;//|SDIO_IRQn
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0;
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x000;
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
        NVIC_Init(&NVIC_InitStructure);


        /* Enable the USARTy Interrupt */
        NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;         
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x1;
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x001;
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
        NVIC_Init(&NVIC_InitStructure);

flyleaf

你用其它优先级组来试试，一般是没有问题的

flyleaf

或者是因为你没有写中断服务函数，所以就卡死了