bldc/driver/eeprom.h

/**
 ******************************************************************************
 * @file    EEPROM_Emulation/inc/eeprom.h
 * @author  MCD Application Team
 * @version V1.0.0
 * @date    10-October-2011
 * @brief   This file contains all the functions prototypes for the EEPROM
 *          emulation firmware library.
 ******************************************************************************
 * @attention
 *
 * 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 2011 STMicroelectronics</center></h2>
 ******************************************************************************
 */

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

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_conf.h"
#include "datatypes.h"

/* Exported constants --------------------------------------------------------*/
/* 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)((PWR->CSR & PWR_CSR_PVDO) ? VoltageRange_2 : VoltageRange_3)

/* EEPROM start address in Flash */
#define EEPROM_START_ADDRESS  ((uint32_t)0x08004000) /* EEPROM emulation start address:
                                                  from sector1 : 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_1

#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_2

/* 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 NB_OF_VAR             ((uint16_t)((2 * sizeof(mc_configuration) + sizeof(app_configuration) + 1) / 2) + \
                              EEPROM_VARS_HW * 2 + EEPROM_VARS_CUSTOM * 2 + (sizeof(backup_data) + 1) / 2)

/* 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 2011 STMicroelectronics *****END OF FILE****/