EEPROM neden koymamışlar ?

[Klein]

Flash kilidinin sürekli açık olmasına gerek yok. Eğer kilidi açma ve kapama sürelerini bekleyecek kadar zaman varsa , yazmadan önce açıp,sonra tekrara kilitlenebilir.
Kod koruması ( okuma koruması) aktifken çalışır.

[SpeedyX]

Teşekkürler.

Okuma koruması ile ilgili özel durumlar yok mu?

Aşağıdaki tek satır kodu yazarak okuma korumasını aktif edebiliyor muyuz?
FLASH_ReadOutProtection(ENABLE);

Örnek;

  // unlock the Flash Program Erase Controller (FPEC)
  FLASH_Unlock();

  FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP| FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
  
  // get pages write protection status
  unsigned int WRPR_Value = FLASH_GetWriteProtectionOptionByte();
  unsigned int ProtectedPages = WRPR_Value & (FLASH_WRProt_Pages0to1 | FLASH_WRProt_Pages2to3 |
                                              FLASH_WRProt_Pages4to5 | FLASH_WRProt_Pages6to7);
  
  // pages are not write protected 
  if(ProtectedPages != 0x00)
  {
    // erase option bytes (must do this before writing option bytes)
    FLASH_EraseOptionBytes();    

    // read protection needs to happen before write protection, since this 
    // function erases all option bytes
    FLASH_ReadOutProtection(ENABLE);

    // program user option bytes
    FLASH_UserOptionByteConfig(OB_IWDG_SW, OB_STOP_NoRST, OB_STDBY_NoRST);

    // protect bootloader FLASH area
    FLASH_EnableWriteProtection(FLASH_WRProt_Pages0to1 | FLASH_WRProt_Pages2to3 |
                                FLASH_WRProt_Pages4to5 | FLASH_WRProt_Pages6to7);
    
    // generate System Reset to load the new option byte values 
    NVIC_GenerateSystemReset();
  }
  
  // lock the Flash Program Erase Controller (FPEC)
  FLASH_Lock();

[Klein]

Kod içerisinden korumayı aktif etmeyi denemedim hiç.  Bitmiş ürünü ST-Link utility kullanarak programlıyorum. Koruma vs.. işlemleri de oradan ayarlıyorum.

[muhittin_kaplan]

StLinkUtil den nasıl Kod Koruma Yapıyoruz ?
Ayrıca Kod Koruma Yaptığımızda "EEPROM" olarak kullanabiliyormuyuz Program Hafızasını ?

[Klein]

Target menüsünde "Option bytes" alt menüsü var.
Okuma koruması aktifken eeprom olarak kullanabiliyoruz.

[SpeedyX]

eeprom.c ve .h ı buraya yüklermisiniz? Önceki sayfada verilen kodlarla biraz oynanmış sanıyorum, okuma sürekli NO_VALID_PAGE döndürüyor.

[Klein]

eeprom.c

/**
  ******************************************************************************
  * @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 */
extern const uint16_t VirtAddVarTab[];
extern const uint16_t NumbOfVar;

/* 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);
  /* Get Page1 status */
  PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);

  /* 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 = 0x08010000, PageStartAddress = 0x08010000;

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

  /* 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));

  /* Get the valid Page end Address */
  Address = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));

  /* 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));

      /* 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;

  /* 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 */
    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;

  /* 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);

  /* Get Page1 actual status */
  PageStatus1 = (*(__IO uint16_t*)PAGE1_BASE_ADDRESS);

  /* 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 = 0x08010000, PageEndAddress = 0x080107FF;

  /* Get valid Page for write operation */
  ValidPage = EE_FindValidPage(WRITE_IN_VALID_PAGE);

  /* 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));

  /* Get the valid Page end Address */
  PageEndAddress = (uint32_t)((EEPROM_START_ADDRESS - 2) + (uint32_t)((1 + ValidPage) * PAGE_SIZE));

  /* 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);
      /* 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 = 0x080103FF, OldPageAddress = 0x08010000;
  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 */
  }

  /* 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;
  }

  /* Transfer process: transfer variables from old to the new active page */
  for (VarIdx = 0; VarIdx < NumbOfVar; VarIdx++)
  {
    if (VirtAddVarTab[VarIdx] != VirtAddress)  /* Check each variable except the one passed as parameter */
    {
      /* 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)
      {
        /* 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;
        }
      }
    }
  }

  /* 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;
  }

  /* 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;
}

/**
  * @}
  */ 

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

eeprom.h

/**
  ******************************************************************************
  * @file    EEPROM_Emulation/inc/eeprom.h 
  * @author  MCD Application Team
  * @version V3.1.0
  * @date    07/27/2009
  * @brief   This file contains all the functions prototypes for the EEPROM 
  *          emulation firmware library.
  ******************************************************************************
  * @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>
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __EEPROM_H
#define __EEPROM_H

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"

/* Exported constants --------------------------------------------------------*/
/* Define the STM32F10Xxx Flash page size depending on the used STM32 device */
#if defined (STM32F10X_LD) || defined (STM32F10X_MD)
  #define PAGE_SIZE  (uint16_t)0x400  /* Page size = 1KByte */
#elif defined (STM32F10X_HD) || defined (STM32F10X_CL)
  #define PAGE_SIZE  (uint16_t)0x800  /* Page size = 2KByte */
#endif

/* EEPROM start address in Flash */
#define EEPROM_START_ADDRESS    ((uint32_t)0x0800F800) /* EEPROM emulation start address:
                                                  after 64KByte of used Flash memory */

/* Pages 0 and 1 base and end addresses */
#define PAGE0_BASE_ADDRESS      ((uint32_t)(EEPROM_START_ADDRESS + 0x000))
#define PAGE0_END_ADDRESS       ((uint32_t)(EEPROM_START_ADDRESS + (PAGE_SIZE - 1)))

#define PAGE1_BASE_ADDRESS      ((uint32_t)(EEPROM_START_ADDRESS + PAGE_SIZE))
#define PAGE1_END_ADDRESS       ((uint32_t)(EEPROM_START_ADDRESS + (2 * PAGE_SIZE - 1)))

/* Used Flash pages for EEPROM emulation */
#define PAGE0                   ((uint16_t)0x0000)
#define PAGE1                   ((uint16_t)0x0001)

/* No valid page define */
#define NO_VALID_PAGE           ((uint16_t)0x00AB)

/* Page status definitions */
#define ERASED                  ((uint16_t)0xFFFF)     /* PAGE is empty */
#define RECEIVE_DATA            ((uint16_t)0xEEEE)     /* PAGE is marked to receive data */
#define VALID_PAGE              ((uint16_t)0x0000)     /* PAGE containing valid data */

/* Valid pages in read and write defines */
#define READ_FROM_VALID_PAGE    ((uint8_t)0x00)
#define WRITE_IN_VALID_PAGE     ((uint8_t)0x01)

/* Page full define */
#define PAGE_FULL               ((uint8_t)0x80)

/* Variables' number */
//#define NumbOfVar               ((uint8_t)0x7F)

/* Exported types ------------------------------------------------------------*/
/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
uint16_t EE_Init(void);
uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data);
uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data);

#endif /* __EEPROM_H */

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

main.h veya main.c içerisindeki sanal adres tablom ve numbofvar

const uint16_t NumbOfVar=0x1F;

const  uint16_t VirtAddVarTab[] = {
		0x5500, 0x5501, 0x5502,0x5503, 0x5504, 0x5505,0x5506, 0x5507,
		0x5508, 0x5509, 0x550A,0x550B, 0x550C, 0x550D,0x550E, 0x550F,
		0x5510, 0x5511, 0x5512,0x5513, 0x5514, 0x5515,0x5516, 0x5517,
		0x5518, 0x5519, 0x551A,0x551B, 0x551C, 0x551D,0x551E, 0x551F,
		0x5520, 0x5521, 0x5522,0x5523, 0x5524, 0x5525,0x5526, 0x5527,
		0x5528, 0x5529, 0x552A,0x552B, 0x552C, 0x552D,0x552E, 0x552F,
		0x5530, 0x5531, 0x5532,0x5533, 0x5534, 0x5535,0x5536, 0x5537,
		0x5538, 0x5539, 0x553A,0x553B, 0x553C, 0x553D,0x553E, 0x553F,
		0x5540, 0x5541, 0x5542,0x5543, 0x5544, 0x5545,0x5546, 0x5547,
		0x5548, 0x5549, 0x554A,0x554B, 0x554C, 0x554D,0x554E, 0x554F,
		0x5550, 0x5551, 0x5552,0x5553, 0x5554, 0x5555,0x5556, 0x5557,
		0x5558, 0x5559, 0x555A,0x555B, 0x555C, 0x555D,0x555E, 0x555F,
		0x5560, 0x5561, 0x5562,0x5563, 0x5564, 0x5565,0x5566, 0x5567,
		0x5568, 0x5569, 0x556A,0x556B, 0x556C, 0x556D,0x556E, 0x556F,
		0x5570, 0x5571, 0x5572,0x5573, 0x5574, 0x5575,0x5576, 0x5577,
		0x5578, 0x5579, 0x557A,0x557B, 0x557C, 0x557D,0x557E, 0x557F
 };

eeprom okuma rutini

void ee_read(uint16_t Start, uint16_t Len, uint16_t* Buf){
uint16_t index;
		for(index = 0; index < Len; index++){
			EE_ReadVariable(VirtAddVarTab[index+Start], &Buf[index]);
		}
}

eeprom okuma fonkiyonu kullanımı

ee_read(0,40,(uint16_t *) ModbusIO->AlarmParamas);

[magnetron]

merhaba

Klein hocanın yüklediği şekliyle değiştirmeden compile ettim
tek bir word saklamak istiyorum ama enerjiyi kesip tekrar verince 0 değerini alıyorum
yani kaydetmiyor

işlemcim 256 KByte Flash olan F103RC

main (void) {
  EE_Init();
  EEread_params();
}
**********************
void EEread_params(void){
  EE_ReadVariable(0x5501,&RAM[PARAMETERS]);
}
***********************
// aşağıdaki fonksiyon operator panel softwareinde çağrılıp parametreyi kaydediyor 
void EEsave_param(void){
uint16_t    *PARptr=&RAM[PARAMETERS];
  EE_WriteVariable(0x5501, *PARptr);
}
   

ekleme : EE_Init fonksiyonu 4 değerini döndürüyor
ekleme 2 : EE_ReadVariable fonksiyonu NO_VALID_PAGE döndürüyor

acaba neyi eksik yapıyorum ?

teşekkür

[Klein]

"eeprom.h" dosyasındaki

#define EEPROM_START_ADDRESS    ((uint32_t)0x0800F800) /* EEPROM emulation start address:

satırını kontrol et. 256K belleğin varsa   
((uint32_t)0x0800F800) buradaki değer 

((uint32_t)0x08040000) - 2x page uzunluğu.  olacak.
yanlış hatırlamıyorsam bu işlemcide her page  2K. Uygulamada Birisi aktif diğeri hazırda bekletilen 2 page kullanılıyor. Bu da 4K = 0x1000 eder.
0x8040000 - 0x1000 =  30000 olur. 

((uint32_t)0x08030000) şeklinde düzeltirsen çalışacaktır.

[magnetron]

Klein hocam ,

EE_Init() den önce FLASH _Unlock koyunca çalıştı

sormak istediğim bu FLASH_Unlock ile program kodu flash bölgesi read protection iptal olur mu ?
yani ben ürünü satmadan önce read protect yapıyorum da

bir de EE_Read ve EE_write yaptıktan sonra tekrar FLASH_Lock yapmamız gerekir mi ?

teşekkür

[Klein]

hayır read prortect iptal olmaz.
Tekrar lock yapılmazsa yanlışlıkla veya bir bug nedeniyle Flash'ın bir bölgesine yazmak istemediğiniz sürece bir şey olacağını düşünmüyorum. Ama yine de lock yapıyorum.

[mistek]

stm32f100 içinde aynı eeprom.c ve eeprom.h dosyası kullanılabilir mi?

[muhittin_kaplan]

ben kullanmışım.
mesaj birleştirme:: 16 Temmuz 2013, 20:26:29
dur kafamız karışmasın kullanmışım derken 32f100 için olabilir.
mesaj birleştirme:: 16 Temmuz 2013, 20:27:59
http://www.4shared.com/rar/-yds_rbO/FlashVsEprom.html

[mistek]

ben kullanmışım.
mesaj birleştirme:: 16 Temmuz 2013, 20:26:29
dur kafamız karışmasın kullanmışım derken 32f100 için olabilir.
mesaj birleştirme:: 16 Temmuz 2013, 20:27:59
http://www.4shared.com/rar/-yds_rbO/FlashVsEprom.html

Hocam bağlantı açılmıyor.

[muhittin_kaplan]

dns değitir