void HAL_FLASH_IRQHandler()

in boards/STM32L475_Discovery/STM32L4xx_HAL_Driver/stm32l4xx_hal_flash.c [316:439]

• 83 lines of code
• 40 McCabe index (conditional complexity)

void HAL_FLASH_IRQHandler(void)
{
  uint32_t tmp_page;

  /* If the operation is completed, disable the PG, PNB, MER1, MER2 and PER Bit */
  CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_MER1 | FLASH_CR_PER | FLASH_CR_PNB));
#if defined (STM32L471xx) || defined (STM32L475xx) || defined (STM32L476xx) || defined (STM32L485xx) || defined (STM32L486xx) || \
    defined (STM32L496xx) || defined (STM32L4A6xx)
  CLEAR_BIT(FLASH->CR, FLASH_CR_MER2);
#endif
  
  /* Disable the FSTPG Bit only if it is the last row programmed */
  if(pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAM_LAST)
  {
    CLEAR_BIT(FLASH->CR, FLASH_CR_FSTPG);
  }

  /* Check FLASH operation error flags */
  if((__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPERR))  || (__HAL_FLASH_GET_FLAG(FLASH_FLAG_PROGERR)) || 
     (__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR)) || (__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGAERR))  || 
     (__HAL_FLASH_GET_FLAG(FLASH_FLAG_SIZERR)) || (__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGSERR))  ||
     (__HAL_FLASH_GET_FLAG(FLASH_FLAG_MISERR)) || (__HAL_FLASH_GET_FLAG(FLASH_FLAG_FASTERR)) || 
     (__HAL_FLASH_GET_FLAG(FLASH_FLAG_RDERR))  || (__HAL_FLASH_GET_FLAG(FLASH_FLAG_OPTVERR)) ||
#if defined (STM32L431xx) || defined (STM32L432xx) || defined (STM32L433xx) || defined (STM32L442xx) || defined (STM32L443xx) || \
    defined (STM32L451xx) || defined (STM32L452xx) || defined (STM32L462xx) || defined (STM32L496xx) || defined (STM32L4A6xx)
     (__HAL_FLASH_GET_FLAG(FLASH_FLAG_ECCD))   || (__HAL_FLASH_GET_FLAG(FLASH_FLAG_PEMPTY)))
#else
     (__HAL_FLASH_GET_FLAG(FLASH_FLAG_ECCD)))
#endif
  {
    /*Save the error code*/
    FLASH_SetErrorCode();
    
    /* Flush the caches to be sure of the data consistency */
    FLASH_FlushCaches() ;

    /* FLASH error interrupt user callback */
    if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGE_ERASE)
    {
       HAL_FLASH_OperationErrorCallback(pFlash.Page);
    }
    else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASS_ERASE)
    {
        HAL_FLASH_OperationErrorCallback(pFlash.Bank);
    }
    else if((pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAM) || 
            (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAM_LAST))
    {
       HAL_FLASH_OperationErrorCallback(pFlash.Address);
    }

    /*Stop the procedure ongoing*/
    pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
  }

  /* Check FLASH End of Operation flag  */
  if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
  {
    /* Clear FLASH End of Operation pending bit */
    __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);

    if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGE_ERASE)
    {
      /* Nb of pages to erased can be decreased */
      pFlash.NbPagesToErase--;

      /* Check if there are still pages to erase*/
      if(pFlash.NbPagesToErase != 0)
      {
        /* Indicate user which page has been erased*/
        HAL_FLASH_EndOfOperationCallback(pFlash.Page);

        /* Increment page number */
        pFlash.Page++;
        tmp_page = pFlash.Page;
        FLASH_PageErase(tmp_page, pFlash.Bank);
      }
      else
      {
        /* No more pages to Erase */
        /* Reset Address and stop Erase pages procedure */
        pFlash.Page = 0xFFFFFFFF;
        pFlash.ProcedureOnGoing = FLASH_PROC_NONE;

        /* Flush the caches to be sure of the data consistency */
        FLASH_FlushCaches() ;
        
        /* FLASH EOP interrupt user callback */
        HAL_FLASH_EndOfOperationCallback(pFlash.Page);
      }
    }
    else
    {
      /* Flush the caches to be sure of the data consistency */
      FLASH_FlushCaches() ;

      if(pFlash.ProcedureOnGoing == FLASH_PROC_MASS_ERASE)
      {
        /* MassErase ended. Return the selected bank */
        /* FLASH EOP interrupt user callback */
        HAL_FLASH_EndOfOperationCallback(pFlash.Bank);
      }
      else if((pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAM) || 
              (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAM_LAST))
      {
        /* Program ended. Return the selected address */
        /* FLASH EOP interrupt user callback */
        HAL_FLASH_EndOfOperationCallback(pFlash.Address);
      }

      /*Clear the procedure ongoing*/
      pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
    }
  }

  if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
  {
    /* Disable End of Operation and Error interrupts */
    __HAL_FLASH_DISABLE_IT(FLASH_IT_EOP | FLASH_IT_OPERR);

    /* Process Unlocked */
    __HAL_UNLOCK(&pFlash);
  }
}