/**使用方法
	1,解锁flash
  FLASH_Unlock();

	2,初始化
  EE_Init();
	
	测试例子参考
	eeprom_test();
**/

/**
  ******************************************************************************
  * @file    EEPROM_Emulation/src/eeprom.c 
  * @author  MCD Application Team
  * @version V3.1.0
  * @date    07/27/2009
  * @brief   This file provides all the EEPROM emulation firmware functions.
  ******************************************************************************
  * @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>
  */ 
/** @addtogroup EEPROM_Emulation
  * @{
  */ 

/* Includes ------------------------------------------------------------------*/
#include "eeprom.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

/* Global variable used to store variable value in read sequence */
uint16_t DataVar = 0;

/* Virtual address defined by the user: 0xFFFF value is prohibited */
uint16_t VirtAddVarTab[]={
CURSET_RESET_TIME,
CURSET_UPDATE_STATE,
CURSET_SET_VER,
CURSET_RESERVED1,
CURSET_RESERVED2,
CURSET_RESERVED3,
CURSET_DEVICE_DevEUI0,
CURSET_DEVICE_DevEUI1,
CURSET_DEVICE_DevEUI2,
CURSET_DEVICE_DevEUI3,
CURSET_DEVICE_DevAddr0,
CURSET_DEVICE_DevAddr1,
CURSET_DEVICE_TYPE,
CURSET_DEVICE_HARD_VER,
CURSET_DEVICE_MFD0,
CURSET_DEVICE_MFD1,
CURSET_GW_ID0,
CURSET_GW_ID1,
CURSET_CHANNELL_NUM,
CURSET_BT_SOFT_VER0,
CURSET_BT_SOFT_VER1,
CURSET_PROTOCOL_VER0,
CURSET_PROTOCOL_VER1,
CURSET_APP1_START_ADDR0,
CURSET_APP1_START_ADDR1,
CURSET_APP1_VER_ADDR0,
CURSET_APP1_VER_ADDR1,
CURSET_APP1_LEN_ADDR0,
CURSET_APP1_LEN_ADDR1,
CURSET_APP1_CRC_ADDR0,
CURSET_APP1_CRC_ADDR1,
CURSET_APP2_START_ADDR0,
CURSET_APP2_START_ADDR1,
CURSET_APP2_VER_ADDR0,
CURSET_APP2_VER_ADDR1,
CURSET_APP2_LEN_ADDR0,
CURSET_APP2_LEN_ADDR1,
CURSET_APP2_CRC_ADDR0,
CURSET_APP2_CRC_ADDR1,
CURSET_APP3_START_ADDR0,
CURSET_APP3_START_ADDR1,
CURSET_APP3_VER_ADDR0,
CURSET_APP3_VER_ADDR1,
CURSET_APP3_LEN_ADDR0,
CURSET_APP3_LEN_ADDR1,
CURSET_APP3_CRC_ADDR0,
CURSET_APP3_CRC_ADDR1,
CURSET_APP3_FIREWARE_TYPE,
CURSET_BASE_KEY0,
CURSET_BASE_KEY1,
CURSET_BASE_KEY2,
CURSET_BASE_KEY3,
CURSET_BASE_KEY4,
CURSET_BASE_KEY5,
CURSET_BASE_KEY6,
CURSET_BASE_KEY7,
CURSET_LORA_CH0_PARM0,
CURSET_LORA_CH0_PARM1,
CURSET_LORA_CH0_PARM2,
CURSET_LORA_CH0_PARM3,
CURSET_LORA_CH0_PARM4,
CURSET_LORA_CH1_PARM0,
CURSET_LORA_CH1_PARM1,
CURSET_LORA_CH1_PARM2,
CURSET_LORA_CH1_PARM3,
CURSET_LORA_CH1_PARM4,
CURSET_YTSF_EN,
CURSET_LOOP_PERIOD,
CURSET_SKK_PORT0,
CURSET_SKK_PORT1,
CURSET_YTSF_PORT0_SN0,
CURSET_YTSF_PORT0_SN1,
CURSET_YTSF_PORT0_SN2,
CURSET_YTSF_PORT1_SN0,
CURSET_YTSF_PORT1_SN1,
CURSET_YTSF_PORT1_SN2,
CURSET_CRC0,
CURSET_CRC1
};

/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
static FLASH_Status EE_Format(void);
static uint16_t EE_FindValidPage(uint8_t Operation);
static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data);
static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data);

/**
  * @brief  Restore the pages to a known good state in case of page's status
  *   corruption after a power loss.
  * @param  None.
  * @retval - Flash error code: on write Flash error
  *         - FLASH_COMPLETE: on success
  */
uint16_t EE_Init(void)
{
  uint16_t PageStatus0 = 6, PageStatus1 = 6;
  uint16_t VarIdx = 0;
  uint16_t EepromStatus = 0, ReadStatus = 0;
  int16_t x = -1;
  uint16_t  FlashStatus;

  /* Get Page0 status */
  PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
	EEPROM_DEBUG("PAGE0_BASE_ADDRESS=0x%08x,PageStatus0=0x%04x\r\n",PAGE0_BASE_ADDRESS,PageStatus0);
  /* Get Page1 status */
  PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
	EEPROM_DEBUG("PAGE1_BASE_ADDRESS=0x%08x,PageStatus1=0x%04x\r\n",PAGE1_BASE_ADDRESS,PageStatus1);

  /* Check for invalid header states and repair if necessary */
  switch (PageStatus0)
  {
    case ERASED:
      if (PageStatus1 == VALID_PAGE) /* Page0 erased, Page1 valid */
      {
        /* Erase Page0 */
        FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);
        /* If erase operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      else if (PageStatus1 == RECEIVE_DATA) /* Page0 erased, Page1 receive */
      {
        /* Erase Page0 */
        FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);
        /* If erase operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
        /* Mark Page1 as valid */
        FlashStatus = FLASH_ProgramHalfWord(PAGE1_BASE_ADDRESS, VALID_PAGE);
        /* If program operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      else /* First EEPROM access (Page0&1 are erased) or invalid state -> format EEPROM */
      {
        /* Erase both Page0 and Page1 and set Page0 as valid page */
        FlashStatus = EE_Format();
        /* If erase/program operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      break;

    case RECEIVE_DATA:
      if (PageStatus1 == VALID_PAGE) /* Page0 receive, Page1 valid */
      {
        /* Transfer data from Page1 to Page0 */
        for (VarIdx = 0; VarIdx < NumbOfVar; VarIdx++)
        {
          if (( *(__IO uint16_t*)(PAGE0_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
          {
            x = VarIdx;
          }
          if (VarIdx != x)
          {
            /* Read the last variables' updates */
            ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
            /* In case variable corresponding to the virtual address was found */
            if (ReadStatus != 0x1)
            {
              /* Transfer the variable to the Page0 */
              EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
              /* If program operation was failed, a Flash error code is returned */
              if (EepromStatus != FLASH_COMPLETE)
              {
                return EepromStatus;
              }
            }
          }
        }
        /* Mark Page0 as valid */
        FlashStatus = FLASH_ProgramHalfWord(PAGE0_BASE_ADDRESS, VALID_PAGE);
        /* If program operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
        /* Erase Page1 */
        FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);
        /* If erase operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      else if (PageStatus1 == ERASED) /* Page0 receive, Page1 erased */
      {
        /* Erase Page1 */
        FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);
        /* If erase operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
        /* Mark Page0 as valid */
        FlashStatus = FLASH_ProgramHalfWord(PAGE0_BASE_ADDRESS, VALID_PAGE);
        /* If program operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      else /* Invalid state -> format eeprom */
      {
        /* Erase both Page0 and Page1 and set Page0 as valid page */
        FlashStatus = EE_Format();
        /* If erase/program operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      break;

    case VALID_PAGE:
      if (PageStatus1 == VALID_PAGE) /* Invalid state -> format eeprom */
      {
        /* Erase both Page0 and Page1 and set Page0 as valid page */
        FlashStatus = EE_Format();
        /* If erase/program operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      else if (PageStatus1 == ERASED) /* Page0 valid, Page1 erased */
      {
        /* Erase Page1 */
        FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);
        /* If erase operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      else /* Page0 valid, Page1 receive */
      {
        /* Transfer data from Page0 to Page1 */
        for (VarIdx = 0; VarIdx < NumbOfVar; VarIdx++)
        {
          if ((*(__IO uint16_t*)(PAGE1_BASE_ADDRESS + 6)) == VirtAddVarTab[VarIdx])
          {
            x = VarIdx;
          }
          if (VarIdx != x)
          {
            /* Read the last variables' updates */
            ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
            /* In case variable corresponding to the virtual address was found */
            if (ReadStatus != 0x1)
            {
              /* Transfer the variable to the Page1 */
              EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
              /* If program operation was failed, a Flash error code is returned */
              if (EepromStatus != FLASH_COMPLETE)
              {
                return EepromStatus;
              }
            }
          }
        }
        /* Mark Page1 as valid */
        FlashStatus = FLASH_ProgramHalfWord(PAGE1_BASE_ADDRESS, VALID_PAGE);
        /* If program operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
        /* Erase Page0 */
        FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);
        /* If erase operation was failed, a Flash error code is returned */
        if (FlashStatus != FLASH_COMPLETE)
        {
          return FlashStatus;
        }
      }
      break;

    default:  /* Any other state -> format eeprom */
      /* Erase both Page0 and Page1 and set Page0 as valid page */
      FlashStatus = EE_Format();
      /* If erase/program operation was failed, a Flash error code is returned */
      if (FlashStatus != FLASH_COMPLETE)
      {
        return FlashStatus;
      }
      break;
  }

  return FLASH_COMPLETE;
}

/**
  * @brief  Returns the last stored variable data, if found, which correspond to
  *   the passed virtual address
  * @param  VirtAddress: Variable virtual address
  * @param  Data: Global variable contains the read variable value
  * @retval Success or error status:
  *           - 0: if variable was found
  *           - 1: if the variable was not found
  *           - NO_VALID_PAGE: if no valid page was found.
  */
uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data)
{
  uint16_t ValidPage = PAGE0;
  uint16_t AddressValue = 0x5555, ReadStatus = 1;
  uint32_t Address = 0x0800F000, PageStartAddress = 0x0800F000;

	IWDG_Feed();														//喂狗
  /* Get active Page for read operation */
  ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);
	//EEPROM_DEBUG("ValidPage=0x%04x\r\n",ValidPage);

  /* Check if there is no valid page */
  if (ValidPage == NO_VALID_PAGE)
  {
    return  NO_VALID_PAGE;
  }

  /* Get the valid Page start Address */
  PageStartAddress = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
	//EEPROM_DEBUG("PageStartAddress=0x%08x\r\n",PageStartAddress);

  /* Get the valid Page end Address */
  Address = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));
	//EEPROM_DEBUG("Address=0x%08x\r\n",Address);

  /* Check each active page address starting from end */
  while (Address > (PageStartAddress + 2))
  {
    /* Get the current location content to be compared with virtual address */
    AddressValue = (*(__IO uint16_t*)Address);

    /* Compare the read address with the virtual address */
    if (AddressValue == VirtAddress)
    {
      /* Get content of Address-2 which is variable value */
      *Data = (*(__IO uint16_t*)(Address - 2));
			EEPROM_DEBUG("ValidPage=0x%04x,RealAddress=0x%08x,VirtAddress=0x%04x,Data=0x%04x\r\n",ValidPage,(Address - 2),VirtAddress,*Data);
      /* In case variable value is read, reset ReadStatus flag */
      ReadStatus = 0;

      break;
    }
    else
    {
      /* Next address location */
      Address = Address - 4;
    }
  }

  /* Return ReadStatus value: (0: variable exist, 1: variable doesn't exist) */
  return ReadStatus;
}

/**
  * @brief  Writes/upadtes variable data in EEPROM.
  * @param  VirtAddress: Variable virtual address
  * @param  Data: 16 bit data to be written
  * @retval Success or error status:
  *           - FLASH_COMPLETE: on success
  *           - PAGE_FULL: if valid page is full
  *           - NO_VALID_PAGE: if no valid page was found
  *           - Flash error code: on write Flash error
  */
uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data)
{
  uint16_t Status = 0;
	IWDG_Feed();														//喂狗

  /* Write the variable virtual address and value in the EEPROM */
  Status = EE_VerifyPageFullWriteVariable(VirtAddress, Data);

  /* In case the EEPROM active page is full */
  if (Status == PAGE_FULL)
  {
    /* Perform Page transfer */
		EEPROM_DEBUG("Status == PAGE_FULL\r\n");
    Status = EE_PageTransfer(VirtAddress, Data);
  }

  /* Return last operation status */
  return Status;
}

/**
  * @brief  Erases PAGE0 and PAGE1 and writes VALID_PAGE header to PAGE0
  * @param  None
  * @retval Status of the last operation (Flash write or erase) done during
  *         EEPROM formating
  */
static FLASH_Status EE_Format(void)
{
  FLASH_Status FlashStatus = FLASH_COMPLETE;
	EEPROM_DEBUG("Erases PAGE0 and PAGE1 and writes VALID_PAGE header to PAGE0\r\n");
  /* Erase Page0 */
  FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);

  /* If erase operation was failed, a Flash error code is returned */
  if (FlashStatus != FLASH_COMPLETE)
  {
    return FlashStatus;
  }

  /* Set Page0 as valid page: Write VALID_PAGE at Page0 base address */
  FlashStatus = FLASH_ProgramHalfWord(PAGE0_BASE_ADDRESS, VALID_PAGE);

  /* If program operation was failed, a Flash error code is returned */
  if (FlashStatus != FLASH_COMPLETE)
  {
    return FlashStatus;
  }

  /* Erase Page1 */
  FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);

  /* Return Page1 erase operation status */
  return FlashStatus;
}

/**
  * @brief  Find valid Page for write or read operation
  * @param  Operation: operation to achieve on the valid page.
  *   This parameter can be one of the following values:
  *     @arg READ_FROM_VALID_PAGE: read operation from valid page
  *     @arg WRITE_IN_VALID_PAGE: write operation from valid page
  * @retval Valid page number (PAGE0 or PAGE1) or NO_VALID_PAGE in case
  *   of no valid page was found
  */
static uint16_t EE_FindValidPage(uint8_t Operation)
{
  uint16_t PageStatus0 = 6, PageStatus1 = 6;

  /* Get Page0 actual status */
  PageStatus0 = (*(__IO uint16_t*)PAGE0_BASE_ADDRESS);
	//EEPROM_DEBUG("PageStatus0=0x%04x\r\n",PageStatus0);

  /* Get Page1 actual status */
  PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);
	//EEPROM_DEBUG("PageStatus1=0x%04x\r\n",PageStatus1);

  /* Write or read operation */
  switch (Operation)
  {
    case WRITE_IN_VALID_PAGE:   /* ---- Write operation ---- */
      if (PageStatus1 == VALID_PAGE)
      {
        /* Page0 receiving data */
        if (PageStatus0 == RECEIVE_DATA)
        {
          return PAGE0;         /* Page0 valid */
        }
        else
        {
          return PAGE1;         /* Page1 valid */
        }
      }
      else if (PageStatus0 == VALID_PAGE)
      {
        /* Page1 receiving data */
        if (PageStatus1 == RECEIVE_DATA)
        {
          return PAGE1;         /* Page1 valid */
        }
        else
        {
          return PAGE0;         /* Page0 valid */
        }
      }
      else
      {
        return NO_VALID_PAGE;   /* No valid Page */
      }

    case READ_FROM_VALID_PAGE:  /* ---- Read operation ---- */
      if (PageStatus0 == VALID_PAGE)
      {
        return PAGE0;           /* Page0 valid */
      }
      else if (PageStatus1 == VALID_PAGE)
      {
        return PAGE1;           /* Page1 valid */
      }
      else
      {
        return NO_VALID_PAGE ;  /* No valid Page */
      }

    default:
      return PAGE0;             /* Page0 valid */
  }
}

/**
  * @brief  Verify if active page is full and Writes variable in EEPROM.
  * @param  VirtAddress: 16 bit virtual address of the variable
  * @param  Data: 16 bit data to be written as variable value
  * @retval Success or error status:
  *           - FLASH_COMPLETE: on success
  *           - PAGE_FULL: if valid page is full
  *           - NO_VALID_PAGE: if no valid page was found
  *           - Flash error code: on write Flash error
  */
static uint16_t EE_VerifyPageFullWriteVariable(uint16_t VirtAddress, uint16_t Data)
{
  FLASH_Status FlashStatus = FLASH_COMPLETE;
  uint16_t ValidPage = PAGE0;
  uint32_t Address = 0x0800F000, PageEndAddress = 0x0800F7FF;

  /* Get valid Page for write operation */
  ValidPage = EE_FindValidPage(WRITE_IN_VALID_PAGE);
	//EEPROM_DEBUG("ValidPage=0x%04x\r\n",ValidPage);
	
  /* Check if there is no valid page */
  if (ValidPage == NO_VALID_PAGE)
  {
    return  NO_VALID_PAGE;
  }

  /* Get the valid Page start Address */
  Address = (uint32_t)(EEPROM_START_ADDRESS + (uint32_t)(ValidPage * PAGE_SIZE));
	//EEPROM_DEBUG("Address=0x%04x\r\n",Address);

  /* Get the valid Page end Address */
  PageEndAddress = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));
	//EEPROM_DEBUG("PageEndAddress=0x%04x\r\n",PageEndAddress);

  /* Check each active page address starting from begining */
  while (Address < PageEndAddress)
  {
    /* Verify if Address and Address+2 contents are 0xFFFFFFFF */
    if ((*(__IO uint32_t*)Address) == 0xFFFFFFFF)
    {
      /* Set variable data */
      FlashStatus = FLASH_ProgramHalfWord(Address, Data);
      /* If program operation was failed, a Flash error code is returned */
      if (FlashStatus != FLASH_COMPLETE)
      {
        return FlashStatus;
      }
      /* Set variable virtual address */
      FlashStatus = FLASH_ProgramHalfWord(Address + 2, VirtAddress);
			EEPROM_DEBUG("ValidPage=0x%04x,RealAddress=0x%08x,VirtAddress=0x%04x,Data=0x%04x\r\n",ValidPage,(Address+2),VirtAddress,Data);
      /* Return program operation status */
      return FlashStatus;
    }
    else
    {
      /* Next address location */
      Address = Address + 4;
    }
  }

  /* Return PAGE_FULL in case the valid page is full */
  return PAGE_FULL;
}

/**
  * @brief  Transfers last updated variables data from the full Page to
  *   an empty one.
  * @param  VirtAddress: 16 bit virtual address of the variable
  * @param  Data: 16 bit data to be written as variable value
  * @retval Success or error status:
  *           - FLASH_COMPLETE: on success
  *           - PAGE_FULL: if valid page is full
  *           - NO_VALID_PAGE: if no valid page was found
  *           - Flash error code: on write Flash error
  */
static uint16_t EE_PageTransfer(uint16_t VirtAddress, uint16_t Data)
{
  FLASH_Status FlashStatus = FLASH_COMPLETE;
  uint32_t NewPageAddress = 0x0800F3FF, OldPageAddress = 0x0800F000;
  uint16_t ValidPage = PAGE0, VarIdx = 0;
  uint16_t EepromStatus = 0, ReadStatus = 0;

  /* Get active Page for read operation */
  ValidPage = EE_FindValidPage(READ_FROM_VALID_PAGE);

  if (ValidPage == PAGE1)       /* Page1 valid */
  {
    /* New page address where variable will be moved to */
    NewPageAddress = PAGE0_BASE_ADDRESS;

    /* Old page address where variable will be taken from */
    OldPageAddress = PAGE1_BASE_ADDRESS;
  }
  else if (ValidPage == PAGE0)  /* Page0 valid */
  {
    /* New page address where variable will be moved to */
    NewPageAddress = PAGE1_BASE_ADDRESS;

    /* Old page address where variable will be taken from */
    OldPageAddress = PAGE0_BASE_ADDRESS;
  }
  else
  {
    return NO_VALID_PAGE;       /* No valid Page */
  }

	EEPROM_DEBUG("NewPageAddress=0x%08x,OldPageAddress=0x%08x\r\n",NewPageAddress,OldPageAddress);
  /* Set the new Page status to RECEIVE_DATA status */
  FlashStatus = FLASH_ProgramHalfWord(NewPageAddress, RECEIVE_DATA);
  /* If program operation was failed, a Flash error code is returned */
  if (FlashStatus != FLASH_COMPLETE)
  {
    return FlashStatus;
  }
	
  /* Write the variable passed as parameter in the new active page */
  EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddress, Data);
  /* If program operation was failed, a Flash error code is returned */
  if (EepromStatus != FLASH_COMPLETE)
  {
    return EepromStatus;
  }
	
	EEPROM_DEBUG("Transfer process: transfer variables from old to the new active page\r\n");
  /* Transfer process: transfer variables from old to the new active page */
  for (VarIdx = 0; VarIdx < NumbOfVar; VarIdx++)
  {
    
    IWDG_Feed();														//喂狗
    if (VirtAddVarTab[VarIdx] != VirtAddress)  /* Check each variable except the one passed as parameter */
    {
			//此时，写是新页地址，读是旧页地址
      /* Read the other last variable updates */
      ReadStatus = EE_ReadVariable(VirtAddVarTab[VarIdx], &DataVar);
      /* In case variable corresponding to the virtual address was found */
      if (ReadStatus != 0x1)
      {
				//此时，写是新页地址，读是旧页地址
        /* Transfer the variable to the new active page */
        EepromStatus = EE_VerifyPageFullWriteVariable(VirtAddVarTab[VarIdx], DataVar);
        /* If program operation was failed, a Flash error code is returned */
        if (EepromStatus != FLASH_COMPLETE)
        {
          return EepromStatus;
        }
      }
    }
  }

	EEPROM_DEBUG("Erase the old Page: Set old Page status to ERASED status,OldPageAddress=0x%08x\r\n",OldPageAddress);
  /* Erase the old Page: Set old Page status to ERASED status */
  FlashStatus = FLASH_ErasePage(OldPageAddress);
  /* If erase operation was failed, a Flash error code is returned */
  if (FlashStatus != FLASH_COMPLETE)
  {
    return FlashStatus;
  }

	EEPROM_DEBUG("Set new Page status to VALID_PAGE status,NewPageAddress=0x%08x\r\n",NewPageAddress);
  /* Set new Page status to VALID_PAGE status */
  FlashStatus = FLASH_ProgramHalfWord(NewPageAddress, VALID_PAGE);
  /* If program operation was failed, a Flash error code is returned */
  if (FlashStatus != FLASH_COMPLETE)
  {
    return FlashStatus;
  }

  /* Return last operation flash status */
  return FlashStatus;
}


/*计算eeprom  CRC值*/
uint16_t Calc_Eeprom_CRC32(uint32_t *crcvalue){
	uint16_t i=0,ReadStatus =1;
	uint16_t EE_h = 0xffff,EE_l = 0xffff;
	
	CRC_ResetDR();
	
	for (i = 0; i < NumbOfVar-4;i+=2)
	{
		if(EE_ReadVariable(i  , &EE_h)!=0)
			return ReadStatus;
		if(EE_ReadVariable(i+1, &EE_l)!=0)
			return ReadStatus;
		
		CRC_CalcCRC((EE_h<<16) & EE_l);
		EE_h = 0xffff;
		EE_l = 0xffff;
	}
	if(NumbOfVar%2)
	{
		if(EE_ReadVariable(i  , &EE_h)!=0)
			return ReadStatus;
		
		CRC_CalcCRC((EE_h<<16) & EE_l);
	}
	
	*crcvalue = CRC_GetCRC();
	ReadStatus = 0;
	
	return ReadStatus;
}

/* Virtual address defined by the user: 0xFFFF value is prohibited */
//uint16_t VirtAddVarTab[3] = {0x5555, 0x6666, 0x7777};
uint16_t eeprom_test(void)
{
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/

uint16_t VarValue = 0,resultcode = 1;
uint16_t temp=0;
uint32_t CRCValue=0;

	EEPROM_DEBUG("\r\nStart EEPROM TEST\r\n");	
	
	if(EE_ReadVariable(CURSET_RESET_TIME, &temp)!=0)
	{
    EE_WriteVariable(CURSET_RESET_TIME,               0x0000);
    EE_WriteVariable(CURSET_UPDATE_STATE,             0x0000);
    EE_WriteVariable(CURSET_SET_VER,                  0x0000);
		/*
    EE_WriteVariable(CURSET_RESERVED1,                0xFFFF);
    EE_WriteVariable(CURSET_RESERVED2,                0xFFFF);
    EE_WriteVariable(CURSET_RESERVED3,                0xFFFF);
    EE_WriteVariable(CURSET_DEVICE_DevEUI0,           0xFFFF);
    EE_WriteVariable(CURSET_DEVICE_DevEUI1,           0xFFFF);
    EE_WriteVariable(CURSET_DEVICE_DevEUI2,           0xFFFF);
    EE_WriteVariable(CURSET_DEVICE_DevEUI3,           0xFFFF);
    EE_WriteVariable(CURSET_DEVICE_DevAddr0,          0xFFFF);
    EE_WriteVariable(CURSET_DEVICE_DevAddr1,          0xFFFF);
    EE_WriteVariable(CURSET_DEVICE_TYPE,              0x0003);
    EE_WriteVariable(CURSET_DEVICE_HARD_VER,          0x0001);
    EE_WriteVariable(CURSET_DEVICE_MFD0,              0x2020);
    EE_WriteVariable(CURSET_DEVICE_MFD1,              0x0808);
    EE_WriteVariable(CURSET_GW_ID0,                   0xFFFF);
    EE_WriteVariable(CURSET_GW_ID1,                   0xFFFF);
    EE_WriteVariable(CURSET_CHANNELL_NUM,             0xFFFF);
    EE_WriteVariable(CURSET_BT_SOFT_VER0,             0x0001);
    EE_WriteVariable(CURSET_BT_SOFT_VER1,             0x6301);
    EE_WriteVariable(CURSET_PROTOCOL_VER0,            0x0001);
    EE_WriteVariable(CURSET_PROTOCOL_VER1,            0x0000);
    EE_WriteVariable(CURSET_APP1_START_ADDR0,         0x0000);
    EE_WriteVariable(CURSET_APP1_START_ADDR1,         0x0801);
    EE_WriteVariable(CURSET_APP1_VER_ADDR0,           0x0001);
    EE_WriteVariable(CURSET_APP1_VER_ADDR1,           0x6301);
    EE_WriteVariable(CURSET_APP1_LEN_ADDR0,           0xFFF8);
    EE_WriteVariable(CURSET_APP1_LEN_ADDR1,           0x0801);
    EE_WriteVariable(CURSET_APP1_CRC_ADDR0,           0xFFFC);
    EE_WriteVariable(CURSET_APP1_CRC_ADDR1,           0x0801);
    EE_WriteVariable(CURSET_APP2_START_ADDR0,         0x0000);
    EE_WriteVariable(CURSET_APP2_START_ADDR1,         0x0802);
    EE_WriteVariable(CURSET_APP2_VER_ADDR0,           0xFFF4);
    EE_WriteVariable(CURSET_APP2_VER_ADDR1,           0x0802);
    EE_WriteVariable(CURSET_APP2_LEN_ADDR0,           0xFFF8);
    EE_WriteVariable(CURSET_APP2_LEN_ADDR1,           0x0802);
    EE_WriteVariable(CURSET_APP2_CRC_ADDR0,           0xFFFC);
    EE_WriteVariable(CURSET_APP2_CRC_ADDR1,           0x0802);
    EE_WriteVariable(CURSET_APP3_START_ADDR0,         0x0000);
    EE_WriteVariable(CURSET_APP3_START_ADDR1,         0x0803);
    EE_WriteVariable(CURSET_APP3_VER_ADDR0,           0x0002);
    EE_WriteVariable(CURSET_APP3_VER_ADDR1,           0x6301);
    EE_WriteVariable(CURSET_APP3_LEN_ADDR0,           0x494C);
    EE_WriteVariable(CURSET_APP3_LEN_ADDR1,           0x0000);
    EE_WriteVariable(CURSET_APP3_CRC_ADDR0,           0xFFFC);
    EE_WriteVariable(CURSET_APP3_CRC_ADDR1,           0x0803);
    EE_WriteVariable(CURSET_APP3_FIREWARE_TYPE,       0x0000);
    EE_WriteVariable(CURSET_BASE_KEY0,                0xABAA);
    EE_WriteVariable(CURSET_BASE_KEY1,                0xB826);
    EE_WriteVariable(CURSET_BASE_KEY2,                0xF479);
    EE_WriteVariable(CURSET_BASE_KEY3,                0x7818);
    EE_WriteVariable(CURSET_BASE_KEY4,                0x668E);
    EE_WriteVariable(CURSET_BASE_KEY5,                0xFF3D);
    EE_WriteVariable(CURSET_BASE_KEY6,                0x1CFB);
    EE_WriteVariable(CURSET_BASE_KEY7,                0xCF95);
    EE_WriteVariable(CURSET_LORA_CH0_PARM0,           0x9488);
    EE_WriteVariable(CURSET_LORA_CH0_PARM1,           0x4A4B);
    EE_WriteVariable(CURSET_LORA_CH0_PARM2,           0x0907);
    EE_WriteVariable(CURSET_LORA_CH0_PARM3,           0x1880);
    EE_WriteVariable(CURSET_LORA_CH0_PARM4,           0x6464);
    EE_WriteVariable(CURSET_LORA_CH1_PARM0,           0x1488);
    EE_WriteVariable(CURSET_LORA_CH1_PARM1,           0x4D68);
    EE_WriteVariable(CURSET_LORA_CH1_PARM2,           0x0907);
    EE_WriteVariable(CURSET_LORA_CH1_PARM3,           0x1880);
    EE_WriteVariable(CURSET_LORA_CH1_PARM4,           0x6464);
    EE_WriteVariable(CURSET_YTSF_EN,                  0x0000);
    EE_WriteVariable(CURSET_LOOP_PERIOD,              0x000A);
    EE_WriteVariable(CURSET_SKK_PORT0,                0x0103);
    EE_WriteVariable(CURSET_SKK_PORT1,                0x0103);
    EE_WriteVariable(CURSET_YTSF_PORT0_SN0,           0xFFFF);
    EE_WriteVariable(CURSET_YTSF_PORT0_SN1,           0xFFFF);
    EE_WriteVariable(CURSET_YTSF_PORT0_SN2,           0xFFFF);
    EE_WriteVariable(CURSET_YTSF_PORT1_SN0,           0xFFFF);
    EE_WriteVariable(CURSET_YTSF_PORT1_SN1,           0xFFFF);
    EE_WriteVariable(CURSET_YTSF_PORT1_SN2,           0xFFFF);

*/
		
		if(Calc_Eeprom_CRC32(&CRCValue)!=0)
				return resultcode;
		EEPROM_DEBUG("CRCValue=0x%08x\r\n",CRCValue);	
		
		EE_WriteVariable(CURSET_CRC0,                     (uint16_t)((CRCValue >>  0) & 0xffff));
		EE_WriteVariable(CURSET_CRC1,                     (uint16_t)((CRCValue >> 16) & 0xffff));


		EE_WriteVariable(CURSET_RESET_TIME,               0x0001);
	}
	
	for (VarValue = 0; VarValue < NumbOfVar; VarValue++)
  {
    EE_ReadVariable(VirtAddVarTab[VarValue], &temp);
		EEPROM_DEBUG("VirtAdd=0x%04x,data=0x%04x\r\n",VirtAddVarTab[VarValue],temp);	
  }
	
	EEPROM_DEBUG("\r\nEnd EEPROM TEST\r\n");	
	
	resultcode = 0;
	return resultcode;
}




/**
  * @}
  */ 

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