STM32不能同时设置两个中断?

fan1974815 · 发表于 2015-8-10 19:23:11

我用STM32F103ZE，同时使用RTC和USART1中断，发现如果调用两次NVIC_Init(&NVIC_InitStructure);函数，程序就死循环了，请各位看看怎么回事，使用UVISION4 编译的：
//RTC 中断配置
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);
//串口中断配置
/* 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);