void HAL_FLASH_IRQHandler()

in CMake-armcc/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_flash.c [313:445]

• 88 lines of code
• 28 McCabe index (conditional complexity)

void HAL_FLASH_IRQHandler(void)
{
  uint32_t tmp_page;
  uint32_t error;
  FLASH_ProcedureTypeDef procedure;

  /* 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) || \
    defined (STM32L4P5xx) || defined (STM32L4Q5xx) || \
    defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined (STM32L4S9xx)
  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 */
  error = (FLASH->SR & FLASH_FLAG_SR_ERRORS);

  if (error !=0U)
  {
    /*Save the error code*/
    pFlash.ErrorCode |= error;

    /* Clear error programming flags */
    __HAL_FLASH_CLEAR_FLAG(error);

    /* Flush the caches to be sure of the data consistency */
    FLASH_FlushCaches() ;

    /* FLASH error interrupt user callback */
    procedure = pFlash.ProcedureOnGoing;
    if(procedure == FLASH_PROC_PAGE_ERASE)
    {
       HAL_FLASH_OperationErrorCallback(pFlash.Page);
    }
    else if(procedure == FLASH_PROC_MASS_ERASE)
    {
        HAL_FLASH_OperationErrorCallback(pFlash.Bank);
    }
    else if((procedure == FLASH_PROC_PROGRAM) ||
            (procedure == FLASH_PROC_PROGRAM_LAST))
    {
       HAL_FLASH_OperationErrorCallback(pFlash.Address);
    }
    else
    {
       HAL_FLASH_OperationErrorCallback(0U);
    }

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

  /* Check FLASH End of Operation flag  */
  if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP) != 0U)
  {
    /* 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 != 0U)
      {
        /* 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 = 0xFFFFFFFFU;
        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() ;

      procedure = pFlash.ProcedureOnGoing;
      if(procedure == FLASH_PROC_MASS_ERASE)
      {
        /* MassErase ended. Return the selected bank */
        /* FLASH EOP interrupt user callback */
        HAL_FLASH_EndOfOperationCallback(pFlash.Bank);
      }
      else if((procedure == FLASH_PROC_PROGRAM) ||
              (procedure == FLASH_PROC_PROGRAM_LAST))
      {
        /* Program ended. Return the selected address */
        /* FLASH EOP interrupt user callback */
        HAL_FLASH_EndOfOperationCallback(pFlash.Address);
      }
      else
      {
        /* Nothing to do */
      }

      /*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);
  }
}