/**
  ******************************************************************************
  * @file    EEPROM_Emul/Core/eeprom_emul.h
  * @author  MCD Application Team
  * @brief   This file contains all the functions prototypes for the EEPROM
  *          emulation firmware library.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

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

/* Includes ------------------------------------------------------------------*/
#include <stdint.h>
#include <stdbool.h>

#define __IO volatile
#define __weak __attribute__((weak))

#include "eeprom_emul_conf.h"
#include "eeprom_emul_types.h"
#include "flash_interface.h"


/* Page definitions */
#define PAGE_SIZE               FLASH_PAGE_SIZE                                  /*!< Page size */
#define PAGE_HEADER_SIZE        (EE_ELEMENT_SIZE * 4U)                             /*!< Page Header is 4 elements to save page state */
#define NB_MAX_ELEMENTS_BY_PAGE ((PAGE_SIZE - PAGE_HEADER_SIZE) / EE_ELEMENT_SIZE) /*!< Max number of elements by page */
#define PAGES_NUMBER            (((((NB_OF_VARIABLES + NB_MAX_ELEMENTS_BY_PAGE) / NB_MAX_ELEMENTS_BY_PAGE) * 2U) * CYCLES_NUMBER) + GUARD_PAGES_NUMBER)
/*!< Number of consecutives pages used by the application */
#define NB_MAX_WRITTEN_ELEMENTS ((NB_MAX_ELEMENTS_BY_PAGE * PAGES_NUMBER) / 2U)  /*!< Max number of elements written before triggering pages transfer */
#define START_PAGE              PAGE(START_PAGE_ADDRESS)                         /*!< Page index of the 1st page used for EEPROM emul, in the bank */
#define END_EEPROM_ADDRESS      (START_PAGE_ADDRESS + (PAGES_NUMBER * FLASH_PAGE_SIZE) - 1) /*!< Last address of EEPROM emulation flash pages */

/* No page define */
#define EE_NO_PAGE_FOUND        ((uint32_t)0xFFFFFFFFU)

/* Macros to manipulate pages */
#define PAGE_ADDRESS(__PAGE__)   (uint32_t)(FLASH_BASE + (__PAGE__) * PAGE_SIZE + ((START_PAGE_ADDRESS - FLASH_BASE) / BANK_SIZE) * BANK_SIZE) /*!< Get page address from page index */
#define PAGE(__ADDRESS__)        (uint32_t)((((__ADDRESS__) - FLASH_BASE) % BANK_SIZE) / FLASH_PAGE_SIZE) /*!< Get page index from page address */
#define PREVIOUS_PAGE(__PAGE__)  (uint32_t)((((__PAGE__) - START_PAGE - 1U + PAGES_NUMBER) % PAGES_NUMBER) + START_PAGE) /*!< Get page index of previous page, among circular page list */
#define FOLLOWING_PAGE(__PAGE__) (uint32_t)((((__PAGE__) - START_PAGE + 1U) % PAGES_NUMBER) + START_PAGE) /*!< Get page index of following page, among circular page list */

/* Macros to manipulate elements */
#define EE_VIRTUALADDRESS_VALUE(__ELEMENT__)            (EE_VIRTUALADDRESS_TYPE)((__ELEMENT__) & EE_MASK_VIRTUALADDRESS) /*!< Get virtual address value from element value */
#define EE_DATA_VALUE(__ELEMENT__)                      (EE_DATA_TYPE)(((__ELEMENT__) & EE_MASK_DATA) >> EE_DATA_SHIFT) /*!< Get Data value from element value */
#define EE_CRC_VALUE(__ELEMENT__)                       (EE_CRC_TYPE)(((__ELEMENT__) & EE_MASK_CRC) >> EE_CRC_SHIFT) /*!< Get Crc value from element value */
#define EE_ELEMENT_VALUE(__VIRTADDR__, __DATA__, __CRC__) (((EE_ELEMENT_TYPE)(__DATA__) << EE_DATA_SHIFT) | (__CRC__) << EE_CRC_SHIFT | (__VIRTADDR__)) /*!< Get element value from virtual addr, data and crc values */

EE_Status EE_Format(EE_Erase_type EraseType);

EE_Status EE_Init(EE_Erase_type EraseType);

EE_Status EE_ReadVariable32bits(uint16_t VirtAddress, uint32_t *pData);

EE_Status EE_WriteVariable32bits(uint16_t VirtAddress, uint32_t Data);

EE_Status EE_ReadVariable16bits(uint16_t VirtAddress, uint16_t *pData);

EE_Status EE_WriteVariable16bits(uint16_t VirtAddress, uint16_t Data);

EE_Status EE_ReadVariable8bits(uint16_t VirtAddress, uint8_t *pData);

EE_Status EE_WriteVariable8bits(uint16_t VirtAddress, uint8_t Data);

EE_Status EE_CleanUp(void);

EE_Status EE_DeleteCorruptedFlashAddress(uint32_t Address);

/**
 * Callback from NMI.
 *
 * @return true if handled by this library
 */
bool EE_NMI_Callback();

#endif /* __EEPROM_EMUL_H */

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