stm32嵌套中断，让人抓狂！

青檬

我写一个STM32的嵌套中断，但是USART1 USART2 和UART4 UART5不能同时使用，否则死机。
请高手指点
#include "stm32f10x.h"
/*******************************************************************************
* Function Name  : 中断向量初始化
* Description    :
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;
  #ifdef  VECT_TAB_RAM 
  /* Set the Vector Table base location at 0x20000000 */
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
  #else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);  
  #endif
  /* Configure the preemption priority and subpriority:
     - 1 bits for pre-emption priority: possible value are 0 or 1
     - 3 bits for subpriority: possible value are 0..7
     - Lower values gives higher priority 
   */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

     /* Enable the IWDG Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  /* Enable the RTC Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
   /* Enable the Ethernet  Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = ETH_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure); 
 

  /* Enable the USART1 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; 
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  /* Enable the USART2 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
 
//  /* Enable the UART4 Interrupt */
//  NVIC_InitStructure.NVIC_IRQChannel = UART4_IRQn;
//  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
//  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
//  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
//  NVIC_Init(&NVIC_InitStructure);
//
//  /* Enable the UART5 Interrupt */
//  NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn;
//  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
//  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
//  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
//  NVIC_Init(&NVIC_InitStructure);
}
 

安

设置没有问题，可能是中断代码的问题，能不能看一下

青檬

我把终端里的程序全部关掉也不管用

火雷达

这样的问题没有遇到过，不过你要分析下程序的上行文，已经工作环境，才能确定是不是这个问题。
1、死机是怎么回事？一直中断还是？？硬件错误（死循环）？