diff --git a/memory/include/f1/eeprom.h b/memory/include/f1/eeprom.h
new file mode 100755
index 0000000000000000000000000000000000000000..653552ead1e9f918ce788e634c6aa9dc8301d44b
--- /dev/null
+++ b/memory/include/f1/eeprom.h
@@ -0,0 +1,101 @@
+/**
+ ******************************************************************************
+ * @file EEPROM_Emulation/inc/eeprom.h
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 17-December-2014
+ * @brief This file contains all the functions prototypes for the EEPROM
+ * emulation firmware library.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __EEPROM_H
+#define __EEPROM_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "stm32f1xx.h"
+
+/* Includes ------------------------------------------------------------------*/
+#ifndef EEPROM_PAGE_SIZE
+ #error "Please, specify the size of a FLASH page with the EEPROM_PAGE_SIZE macro"
+#endif
+
+#ifndef EEPROM_START_ADDRESS
+ #error "Please, specify the start of the EEPROM FLASH memory with the EEPROM_START_ADDRESS macro"
+#endif
+
+/* Exported constants --------------------------------------------------------*/
+/* Pages 0 and 1 base and end addresses */
+#define PAGE0_BASE_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + 0x0000))
+#define PAGE0_END_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + (EEPROM_PAGE_SIZE - 1)))
+#define PAGE0_ID PAGE0_BASE_ADDRESS
+
+#define PAGE1_BASE_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + EEPROM_PAGE_SIZE))
+#define PAGE1_END_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + 2*EEPROM_PAGE_SIZE - 1))
+#define PAGE1_ID PAGE1_BASE_ADDRESS
+
+/* 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)
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+uint16_t EE_Init(void);
+void EE_update_num_variables(uint32_t num);
+uint16_t EE_ReadVariable(uint16_t VirtAddress, uint16_t* Data);
+uint16_t EE_WriteVariable(uint16_t VirtAddress, uint16_t Data);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __EEPROM_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/memory/src/eeprom.c b/memory/src/eeprom.c
new file mode 100755
index 0000000000000000000000000000000000000000..2a86a65b3cbd37d027709c8b79f4cc063896c82c
--- /dev/null
+++ b/memory/src/eeprom.c
@@ -0,0 +1,682 @@
+/**
+ ******************************************************************************
+ * @file EEPROM_Emulation/src/eeprom.c
+ * @author MCD Application Team
+ * @version V1.0.0
+ * @date 17-December-2014
+ * @brief This file provides all the EEPROM emulation firmware functions.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/** @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 */
+uint32_t eeprom_num_variables=0;
+uint16_t DataVar = 0;
+
+/* Virtual address defined by the user: 0xFFFF value is prohibited */
+uint16_t eeprom_data[] __attribute__ ((section (".eeprom")))={VALID_PAGE, 0xFFFF};
+
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+static uint8_t 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);
+static uint16_t EE_VerifyPageFullyErased(uint32_t Address);
+
+/**
+ * @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;
+ uint8_t flashstatus;
+ uint32_t page_error=0;
+ FLASH_EraseInitTypeDef s_eraseinit;
+
+ /* Unlock the Flash Program Erase controller */
+ HAL_FLASH_Unlock();
+
+ /* Get Page0 status */
+ pagestatus0=(*(volatile uint16_t*)PAGE0_BASE_ADDRESS);
+ /* Get Page1 status */
+ pagestatus1=(*(volatile uint16_t*)PAGE1_BASE_ADDRESS);
+
+ /* Fill EraseInit structure*/
+ s_eraseinit.TypeErase=FLASH_TYPEERASE_PAGES;
+ s_eraseinit.PageAddress=PAGE0_ID;
+ s_eraseinit.NbPages=1;
+
+ /* Check for invalid header states and repair if necessary */
+ switch(pagestatus0)
+ {
+ case ERASED:
+ if(pagestatus1==VALID_PAGE) /* Page0 erased, Page1 valid */
+ {
+ /* Erase Page0 */
+ if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
+ {
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ }
+ }
+ else if(pagestatus1==RECEIVE_DATA) /* Page0 erased, Page1 receive */
+ {
+ /* Erase Page0 */
+ if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
+ {
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ }
+ /* Mark Page1 as valid */
+ flashstatus=HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
+ /* If program operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ 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!=0x00)
+ return flashstatus;
+ }
+ break;
+
+ case RECEIVE_DATA:
+ if(pagestatus1==VALID_PAGE) /* Page0 receive, Page1 valid */
+ {
+ /* Transfer data from Page1 to Page0 */
+ for(varidx=0;varidx<eeprom_num_variables;varidx++)
+ {
+ if((*(volatile uint16_t*)(PAGE0_BASE_ADDRESS+6))==eeprom_data[varidx])
+ x=varidx;
+ if(varidx!=x)
+ {
+ /* Read the last variables' updates */
+ readstatus=EE_ReadVariable(eeprom_data[varidx], &DataVar);
+ /* In case variable corresponding to the virtual address was found */
+ if(readstatus!=0x1)
+ {
+ /* Transfer the variable to the Page0 */
+ eepromstatus=EE_VerifyPageFullWriteVariable(eeprom_data[varidx], DataVar);
+ /* If program operation was failed, a Flash error code is returned */
+ if(eepromstatus!=0x00)
+ return eepromstatus;
+ }
+ }
+ }
+ /* Mark Page0 as valid */
+ flashstatus=HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
+ /* If program operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ s_eraseinit.TypeErase=FLASH_TYPEERASE_PAGES;
+ s_eraseinit.PageAddress=PAGE1_ID;
+ s_eraseinit.NbPages=1;
+ /* Erase Page1 */
+ if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
+ {
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ }
+ }
+ else if(pagestatus1==ERASED) /* Page0 receive, Page1 erased */
+ {
+ s_eraseinit.TypeErase=FLASH_TYPEERASE_PAGES;
+ s_eraseinit.PageAddress=PAGE1_ID;
+ s_eraseinit.NbPages=1;
+ /* Erase Page1 */
+ if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
+ {
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ }
+ /* Mark Page0 as valid */
+ flashstatus=HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE0_BASE_ADDRESS, VALID_PAGE);
+ /* If program operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ 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!=0x00)
+ 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!=0x00)
+ return flashstatus;
+ }
+ else if(pagestatus1==ERASED) /* Page0 valid, Page1 erased */
+ {
+ s_eraseinit.TypeErase=FLASH_TYPEERASE_PAGES;
+ s_eraseinit.PageAddress=PAGE1_ID;
+ s_eraseinit.NbPages=1;
+ /* Erase Page1 */
+ if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
+ {
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ }
+ }
+ else /* Page0 valid, Page1 receive */
+ {
+ /* Transfer data from Page0 to Page1 */
+ for(varidx=0;varidx<eeprom_num_variables;varidx++)
+ {
+ if((*(volatile uint16_t*)(PAGE1_BASE_ADDRESS+6))==eeprom_data[varidx])
+ x=varidx;
+ if(varidx!=x)
+ {
+ /* Read the last variables' updates */
+ readstatus=EE_ReadVariable(eeprom_data[varidx], &DataVar);
+ /* In case variable corresponding to the virtual address was found */
+ if(readstatus!=0x1)
+ {
+ /* Transfer the variable to the Page1 */
+ eepromstatus=EE_VerifyPageFullWriteVariable(eeprom_data[varidx], DataVar);
+ /* If program operation was failed, a Flash error code is returned */
+ if(eepromstatus!=0x00)
+ return eepromstatus;
+ }
+ }
+ }
+ /* Mark Page1 as valid */
+ flashstatus=HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, PAGE1_BASE_ADDRESS, VALID_PAGE);
+ /* If program operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ s_eraseinit.TypeErase=FLASH_TYPEERASE_PAGES;
+ s_eraseinit.PageAddress=PAGE0_ID;
+ s_eraseinit.NbPages=1;
+ /* Erase Page0 */
+ if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
+ {
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ 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!=0x00)
+ return flashstatus;
+ break;
+ }
+
+ return 0x00;
+}
+
+/**
+ * @brief Verify if specified page is fully erased.
+ * @param Address: page address
+ * This parameter can be one of the following values:
+ * @arg PAGE0_BASE_ADDRESS: Page0 base address
+ * @arg PAGE1_BASE_ADDRESS: Page1 base address
+ * @retval page fully erased status:
+ * - 0: if Page not erased
+ * - 1: if Page erased
+ */
+uint16_t EE_VerifyPageFullyErased(uint32_t Address)
+{
+ uint32_t readstatus=1;
+ uint16_t addressvalue=0x5555;
+
+ /* Check each active page address starting from end */
+ if(Address==PAGE0_BASE_ADDRESS)
+ {
+ while(Address<=PAGE0_END_ADDRESS)
+ {
+ /* Get the current location content to be compared with virtual address */
+ addressvalue=(*(volatile uint16_t*)Address);
+
+ /* Compare the read address with the virtual address */
+ if(addressvalue!=ERASED)
+ {
+ /* In case variable value is read, reset readstatus flag */
+ readstatus=0;
+
+ break;
+ }
+ /* Next address location */
+ Address=Address+4;
+ }
+ }
+ else
+ {
+ while(Address<=PAGE1_END_ADDRESS)
+ {
+ /* Get the current location content to be compared with virtual address */
+ addressvalue=(*(volatile uint16_t*)Address);
+
+ /* Compare the read address with the virtual address */
+ if(addressvalue!=ERASED)
+ {
+ /* In case variable value is read, reset readstatus flag */
+ readstatus=0;
+
+ break;
+ }
+ /* Next address location */
+ Address=Address+4;
+ }
+ }
+
+ /* Return readstatus value: (0: Page not erased, 1: Page erased) */
+ return readstatus;
+}
+
+/**
+ * @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=EEPROM_START_ADDRESS,PageStartAddress=EEPROM_START_ADDRESS;
+
+ /* 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*EEPROM_PAGE_SIZE));
+
+ /* Get the valid Page end Address */
+ address=(uint32_t)((EEPROM_START_ADDRESS-2)+(uint32_t)((1+validpage)*EEPROM_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=(*(volatile uint16_t*)address);
+
+ /* Compare the read address with the virtual address */
+ if(addressvalue==VirtAddress)
+ {
+ /* Get content of Address-2 which is variable value */
+ *Data=(*(volatile 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 PAGE and PAGE1 and writes VALID_PAGE header to PAGE
+ * @param None
+ * @retval Status of the last operation (Flash write or erase) done during
+ * EEPROM formating
+ */
+static uint8_t EE_Format(void)
+{
+ uint8_t flashstatus=0x00;
+ uint32_t page_error=0;
+ FLASH_EraseInitTypeDef s_eraseinit;
+
+ s_eraseinit.TypeErase=FLASH_TYPEERASE_PAGES;
+ s_eraseinit.PageAddress=PAGE0_ID;
+ s_eraseinit.NbPages=1;
+ /* Erase Page0 */
+ if(!EE_VerifyPageFullyErased(PAGE0_BASE_ADDRESS))
+ {
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit,&page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ }
+ /* Set Page0 as valid page: Write VALID_PAGE at Page0 base address */
+ flashstatus=HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD,PAGE0_BASE_ADDRESS,VALID_PAGE);
+ /* If program operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+
+ s_eraseinit.PageAddress=PAGE1_ID;
+ /* Erase Page1 */
+ if(!EE_VerifyPageFullyErased(PAGE1_BASE_ADDRESS))
+ {
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit,&page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ }
+
+ return 0x00;
+}
+
+/**
+ * @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 (PAGE 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=(*(volatile uint16_t*)PAGE0_BASE_ADDRESS);
+
+ /* Get Page1 actual status */
+ pagestatus1=(*(volatile 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)
+{
+ uint8_t flashstatus=0x00;
+ uint16_t validpage=PAGE0;
+ uint32_t address=EEPROM_START_ADDRESS,pageendaddress=EEPROM_START_ADDRESS+EEPROM_PAGE_SIZE;
+
+ /* 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*EEPROM_PAGE_SIZE));
+
+ /* Get the valid Page end address */
+ pageendaddress=(uint32_t)((EEPROM_START_ADDRESS-1)+(uint32_t)((validpage+1)*EEPROM_PAGE_SIZE));
+
+ /* Check each active page address starting from begining */
+ while(address<pageendaddress)
+ {
+ /* Verify if address and address+2 contents are 0xFFFFFFFF */
+ if((*(volatile uint32_t*)address)==0xFFFFFFFF)
+ {
+ /* Set variable data */
+ flashstatus=HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD,address,Data);
+ /* If program operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+ /* Set variable virtual address */
+ flashstatus=HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD,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)
+{
+ uint8_t flashstatus=0x00;
+ uint32_t newpageaddress=EEPROM_START_ADDRESS;
+ uint32_t oldpageid=0;
+ uint16_t validpage=PAGE0,varidx=0,address=0;
+ uint16_t eepromstatus=0, readstatus=0;
+ uint32_t page_error=0;
+ FLASH_EraseInitTypeDef s_eraseinit;
+
+ /* 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 ID where variable will be taken from */
+ oldpageid=PAGE1_ID;
+ }
+ else if(validpage==PAGE0) /* Page0 valid */
+ {
+ /* New page address where variable will be moved to */
+ newpageaddress = PAGE1_BASE_ADDRESS;
+
+ /* Old page ID where variable will be taken from */
+ oldpageid = PAGE0_ID;
+ }
+ else
+ return NO_VALID_PAGE; /* No valid Page */
+
+ /* Set the new Page status to RECEIVE_DATA status */
+ flashstatus=HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, newpageaddress, RECEIVE_DATA);
+ /* If program operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ 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!=0x00)
+ return eepromstatus;
+
+ /* Transfer process: transfer variables from old to the new active page */
+ for(varidx=0;varidx<eeprom_num_variables;varidx++)
+ {
+ address=((volatile uint16_t*)oldpageid)[1+varidx*2];
+ if(address!=VirtAddress) /* Check each variable except the one passed as parameter */
+ {
+ /* Read the other last variable updates */
+ readstatus=EE_ReadVariable(address,&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(address, DataVar);
+ /* If program operation was failed, a Flash error code is returned */
+ if(eepromstatus!=0x00)
+ return eepromstatus;
+ }
+ }
+ }
+
+ s_eraseinit.TypeErase=FLASH_TYPEERASE_PAGES;
+ s_eraseinit.PageAddress=oldpageid;
+ s_eraseinit.NbPages=1;
+
+ /* Erase the old Page: Set old Page status to ERASED status */
+ flashstatus=HAL_FLASHEx_Erase(&s_eraseinit, &page_error);
+ /* If erase operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+
+ /* Set new Page status to VALID_PAGE status */
+ flashstatus = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, newpageaddress, VALID_PAGE);
+ /* If program operation was failed, a Flash error code is returned */
+ if(flashstatus!=0x00)
+ return flashstatus;
+
+ /* Return last operation flash status */
+ return flashstatus;
+}
+
+void EE_update_num_variables(uint32_t num)
+{
+ eeprom_num_variables+=num;
+}
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/