我的硬件是STM32L152ZD,现在的状态是通过跟踪，程序一直运行在启动文件中。即启动文件中调用SystemInit (void)，SystemInit (void)中又调用SetSysClock(void)。现在问题是 程序一直在do---wile()中循环，应该是在等待HSE稳定吧。资料上不是说STM32L1XX系列上电默认时钟就是HSI吗？附上SetSysClock(void)函数片段。库是V1.3.1.。。先谢谢大家了
static void SetSysClock(void)
{
  __IO uint32_t StartUpCounter = 0, HSEStatus = 0;
  
  /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration ---------------------------*/
  /* Enable HSE */
  RCC->CR |= ((uint32_t)RCC_CR_HSEON);

  /* Wait till HSE is ready and if Time out is reached exit */
  do
  {
    HSEStatus = RCC->CR & RCC_CR_HSERDY;
    StartUpCounter++;
  } while((HSEStatus == 0) && (StartUpCounter != HSE_STARTUP_TIMEOUT));

  if ((RCC->CR & RCC_CR_HSERDY) != RESET)
  {
    HSEStatus = (uint32_t)0x01;
  }
  else
  {
    HSEStatus = (uint32_t)0x00;
  }
  
  if (HSEStatus == (uint32_t)0x01) 此帖出自小平头技术问答