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/**
******************************************************************************
* @file EEPROM/EEPROM_Emulation/inc/eeprom.h
* @author MCD Application Team
* @brief This file contains all the functions prototypes for the EEPROM
* emulation firmware library.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __EEPROM_H
#define __EEPROM_H
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
/* Exported constants --------------------------------------------------------*/
/* EEPROM emulation firmware error codes */
#define EE_OK (uint32_t)HAL_OK
#define EE_ERROR (uint32_t)HAL_ERROR
#define EE_BUSY (uint32_t)HAL_BUSY
#define EE_TIMEOUT (uint32_t)HAL_TIMEOUT
/* Define the size of the sectors to be used */
#define PAGE_SIZE (uint32_t)0x4000 /* Page size = 16KByte */
/* Device voltage range supposed to be [2.7V to 3.6V], the operation will
be done by word */
#define VOLTAGE_RANGE (uint8_t)VOLTAGE_RANGE_3
/* EEPROM start address in Flash */
#define EEPROM_START_ADDRESS ((uint32_t)0x08008000) /* EEPROM emulation start address:
from sector2 : after 16KByte of used
Flash memory */
/* 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 + (PAGE_SIZE - 1)))
#define PAGE0_ID FLASH_SECTOR_2
#define PAGE1_BASE_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + 0x4000))
#define PAGE1_END_ADDRESS ((uint32_t)(EEPROM_START_ADDRESS + (2 * PAGE_SIZE - 1)))
#define PAGE1_ID FLASH_SECTOR_3
/* Used Flash pages for EEPROM emulation */
#define PAGE0 ((uint16_t)0x0000)
#define PAGE1 ((uint16_t)0x0001) /* Page nb between PAGE0_BASE_ADDRESS & PAGE1_BASE_ADDRESS*/
/* 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 NB_OF_VAR ((uint8_t)0x03)
/* 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 */