不能同时配置RTC和USART中断优先级

[复制链接]

304|0

手机看帖

扫描二维码
随时随地手机跟帖

电梯直达

楼主

车水马龙|

楼主 | 2019-11-23 17:30 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

中断优先级, RTC, USART, ic, vi

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);

使用特权