/* USER CODE BEGIN PD */
#define FLASH_USER_START_ADDR   (FLASH_BASE + (3 * FLASH_PAGE_SIZE))   /* Start @ of user Flash area */
#define FLASH_USER_END_ADDR     (FLASH_BASE + FLASH_SIZE - 1)   /* End @ of user Flash area */

#define DATA_64                 ((uint64_t)0x1234567812345678)
#define DATA_32                 ((uint32_t)0x12345678</mark>)

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
TIM_HandleTypeDef htim2;

/* USER CODE BEGIN PV */
uint32_t FirstPage = 0, NbOfPages = 0;
uint32_t Address = 0, PageError = 0;
__IO uint32_t data32 = 0 , MemoryProgramStatus = 0;


/*Variable used for Erase procedure*/
static FLASH_EraseInitTypeDef EraseInitStruct = {0};

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_TIM2_Init(void);
static void MX_GPIO_Init(void);
/* USER CODE BEGIN PFP */
static uint32_t GetPage(uint32_t Address);

/* USER CODE END PFP */

  /* Unlock the Flash to enable the flash control register access *************/
  HAL_FLASH_Unlock();
  

  /* Erase the user Flash area
    (area defined by FLASH_USER_START_ADDR and FLASH_USER_END_ADDR) ***********/


  /* Get the 1st page to erase */
  FirstPage = GetPage(FLASH_USER_START_ADDR);

  /* Get the number of pages to erase from 1st page */
  NbOfPages = GetPage(FLASH_USER_END_ADDR) - FirstPage + 1;

  /* Fill EraseInit structure*/
  EraseInitStruct.TypeErase   = FLASH_TYPEERASE_PAGES;
  EraseInitStruct.Page        = FirstPage;
  EraseInitStruct.NbPages     = NbOfPages;

  /* Note: If an erase operation in Flash memory also concerns data in the data or instruction cache,
     you have to make sure that these data are rewritten before they are accessed during code
     execution. If this cannot be done safely, it is recommended to flush the caches by setting the
     DCRST and ICRST bits in the FLASH_CR register. */
  if (HAL_FLASHEx_Erase(&EraseInitStruct, &PageError) != HAL_OK)
  {
    /*
      Error occurred while page erase.
      User can add here some code to deal with this error.
      PageError will contain the faulty page and then to know the code error on this page,
      user can call function 'HAL_FLASH_GetError()'
    */
    /* Infinite loop */
    while (1)
    {
      /* Make LED3 blink (100ms on, 2s off) to indicate error in Erase operation */
      //BSP_LED_On(LED3);
      HAL_Delay(100);
      //BSP_LED_Off(LED3);
      HAL_Delay(2000);
    }
  }

  /* Program the user Flash area word by word
    (area defined by FLASH_USER_START_ADDR and FLASH_USER_END_ADDR) ***********/

  Address = FLASH_USER_START_ADDR;

 while (Address < FLASH_USER_END_ADDR)
  {
    if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, Address, DATA_64) == HAL_OK)
    {
      Address = Address + 8;
    }

   else
    {
      /* Error occurred while writing data in Flash memory.
         User can add here some code to deal with this error */
      while (1)
      {
        /* Make LED3 blink (100ms on, 2s off) to indicate error in Write operation */
        //BSP_LED_On(LED3);
        HAL_Delay(100);
        //BSP_LED_Off(LED3);
        HAL_Delay(2000);
      }
    }
    FLASH_WaitForLastOperation(500);
  }

  /* Lock the Flash to disable the flash control register access (recommended
     to protect the FLASH memory against possible unwanted operation) *********/
  HAL_FLASH_Lock();

  /* Check if the programmed data is OK
      MemoryProgramStatus = 0: data programmed correctly
      MemoryProgramStatus != 0: number of words not programmed correctly ******/
  Address = FLASH_USER_START_ADDR;
  MemoryProgramStatus = 0x0;

  while (Address < FLASH_USER_END_ADDR)
  {
    data32 = *(__IO uint32_t *)Address;

    if (data32 != DATA_32)
    {
      MemoryProgramStatus++;
    }
    Address = Address + 4;
  }

  /*Check if there is an issue to program data*/
  if (MemoryProgramStatus == 0)
  {
    /* No error detected. Switch on LED3*/
    //BSP_LED_On(LED3);
	  HAL_GPIO_WritePin(GPIOC, GPIO_PIN_6, GPIO_PIN_SET);
  }
  else
  {
    /* Error detected. LED3 will blink with 1s period */
    while (1)
    {
      //BSP_LED_On(LED3);
      HAL_Delay(1000);
      //BSP_LED_Off(LED3);
      HAL_Delay(1000);
    }

void Flash_Read_Data (uint32_t StartPageAddress, uint32_t *RxBuf, uint16_t numberofwords)
{
	while (1)
	{

		*RxBuf = *(__IO uint32_t *)StartPageAddress;
		StartPageAddress += 4;
		RxBuf++;
		if (!(numberofwords--)) break;
	}
}