stm32f10x_it.c

STM32 库文件

/**
  ******************************************************************************
  * @file RCC/stm32f10x_it.c 
  * @author  MCD Application Team
  * @version  V3.0.0
  * @date  04/06/2009
  * @brief  Main Interrupt Service Routines.
  *         This file provides template for all exceptions handler and 
  *         peripherals interrupt service routine.
  ******************************************************************************
  * @copy
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
  */ 

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_it.h"
#include "main.h"

/** @addtogroup StdPeriph_Examples
  * @{
  */

/** @addtogroup RCC_Example
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/******************************************************************************/
/*            Cortex-M3 Processor Exceptions Handlers                         */
/******************************************************************************/

/**
  * @brief  This function handles NMI exception.
  * @param  None
  * @retval : None
  */
void NMI_Handler(void)
{
  /* This interrupt is generated when HSE clock fails */

  if (RCC_GetITStatus(RCC_IT_CSS) != RESET)
  {/* At this stage: HSE, PLL are disabled (but no change on PLL config) and HSI
       is selected as system clock source */

    /* Enable HSE */
    RCC_HSEConfig(RCC_HSE_ON);

    /* Enable HSE Ready interrupt */
    RCC_ITConfig(RCC_IT_HSERDY, ENABLE);

#ifndef SYSCLK_HSE
    /* Enable PLL Ready interrupt */
    RCC_ITConfig(RCC_IT_PLLRDY, ENABLE);
#endif 

    /* Clear Clock Security System interrupt pending bit */
    RCC_ClearITPendingBit(RCC_IT_CSS);

    /* Once HSE clock recover, the HSERDY interrupt is generated and in the RCC ISR
       routine the system clock will be reconfigured to its previous state (before
       HSE clock failure) */
  }
}

/**
  * @brief  This function handles Hard Fault exception.
  * @param  None
  * @retval : None
  */
void HardFault_Handler(void)
{
  /* Go to infinite loop when Hard Fault exception occurs */
  while (1)
  {
  }
}

/**
  * @brief  This function handles Memory Manage exception.
  * @param  None
  * @retval : None
  */
void MemManage_Handler(void)
{
  /* Go to infinite loop when Memory Manage exception occurs */
  while (1)
  {
  }
}

/**
  * @brief  This function handles Bus Fault exception.
  * @param  None
  * @retval : None
  */
void BusFault_Handler(void)
{
  /* Go to infinite loop when Bus Fault exception occurs */
  while (1)
  {
  }
}

/**
  * @brief  This function handles Usage Fault exception.
  * @param  None
  * @retval : None
  */
void UsageFault_Handler(void)
{
  /* Go to infinite loop when Usage Fault exception occurs */
  while (1)
  {
  }
}

/**
  * @brief  This function handles SVCall exception.
  * @param  None
  * @retval : None
  */
void SVC_Handler(void)
{
}

/**
  * @brief  This function handles Debug Monitor exception.
  * @param  None
  * @retval : None
  */
void DebugMon_Handler(void)
{
}

/**
  * @brief  This function handles PendSV_Handler exception.
  * @param  None
  * @retval : None
  */
void PendSV_Handler(void)
{
}

/**
  * @brief  This function handles SysTick Handler.
  * @param  None
  * @retval : None
  */
void SysTick_Handler(void)
{
}

/******************************************************************************/
/*            STM32F10x Peripherals Interrupt Handlers                        */
/******************************************************************************/

/**
  * @brief  This function handles RCC interrupt request. 
  * @param  None
  * @retval : None
  */
void RCC_IRQHandler(void)
{
  if(RCC_GetITStatus(RCC_IT_HSERDY) != RESET)
  { 
    /* Clear HSERDY interrupt pending bit */
    RCC_ClearITPendingBit(RCC_IT_HSERDY);

    /* Check if the HSE clock is still available */
    if (RCC_GetFlagStatus(RCC_FLAG_HSERDY) != RESET)
    { 
#ifdef SYSCLK_HSE
      /* Select HSE as system clock source */
      RCC_SYSCLKConfig(RCC_SYSCLKSource_HSE);
#else
      /* Enable PLL: once the PLL is ready the PLLRDY interrupt is generated */ 
      RCC_PLLCmd(ENABLE);
#endif      
    }
  }

  if(RCC_GetITStatus(RCC_IT_PLLRDY) != RESET)
  { 
    /* Clear PLLRDY interrupt pending bit */
    RCC_ClearITPendingBit(RCC_IT_PLLRDY);

    /* Check if the PLL is still locked */
    if (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) != RESET)
    { 
      /* Select PLL as system clock source */
      RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
    }
  }
}

/******************************************************************************/
/*                 STM32F10x Peripherals Interrupt Handlers                   */
/*  Add here the Interrupt Handler for the used peripheral(s) (PPP), for the  */
/*  available peripheral interrupt handler's name please refer to the startup */
/*  file (startup_stm32f10x_xx.s).                                            */
/******************************************************************************/

/**
  * @brief  This function handles PPP interrupt request.
  * @param  None
  * @retval : None
  */
/*void PPP_IRQHandler(void)
{
}*/

/**
  * @}
  */ 

/**
  * @}
  */ 

/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/