#ifndef FLASH_EXTERNAL_DATA_H
#define FLASH_EXTERNAL_DATA_H

#include "publicdata/type.h"
#include "meter_calculate/meter_calculate_impl.h"

/* ============================================================================
 * 外部 Flash 容量与地址说明
 *
 * 当前上电识别 JEDEC ID: 0xC84019
 * - Manufacturer: 0xC8（GigaDevice）
 * - Capacity code: 0x19（典型为 256Mbit = 32MB）
 *
 * 当前底层驱动已启用 4-byte 地址模式（4 字节地址）：
 * - 可直接访问线性地址范围：0x00000000 ~ 0x01FFFFFF（32MB）
 * - 总容量：0x02000000 bytes
 * ============================================================================ */

#define EXFLASH_ADDR_MIN                 (0x00000000u)
#define EXFLASH_ADDR_MAX                 (0x01FFFFFFu)
#define EXFLASH_TOTAL_SIZE               (0x02000000u)

/* SPI NOR Flash 物理扇区大小（字节） */
#define SPI_SECTOR_SIZE                 (4096u)

#ifndef RECORD_ZERO_SAVE
#define RECORD_ZERO_SAVE                (0x7FFFu)
#endif
#ifndef RECORD_HEADER
#define RECORD_HEADER                   (0x55u)
#endif

/* OTA 区（升级保留区） */
#define UPGRADE_START_ADDR              (0x00000000u)
#define UPGRADE_END_ADDR                (0x001FFFFFu)
#define UPGRADE_TOTAL_SIZE              (UPGRADE_END_ADDR - UPGRADE_START_ADDR + 1u)

/* 配置区 */
#define DATAFLASH_VAR_CFG_DATA1_ADDR    (0x210000u)
#define DATAFLASH_VAR_CFG_DATA2_ADDR    (0x211000u)
#define DATAFLASH_VAR_CFG_DATA3_ADDR    (0x212000u)
#define DATAFLASH_FIX_CFG_DATA1_ADDR    (0x213000u)
#define DATAFLASH_FIX_CFG_DATA2_ADDR    (0x214000u)
#define DATAFLASH_FIX_CFG_DATA3_ADDR    (0x215000u)
#define DATAFLASH_OCPP_CFG_DATA_ADDR    (0x216000u)

/* 故障、卡号、历史记录区 */
#define DATAFLASH_FAULT_ADDR            (0x220000u)
#define DATAFLASH_FAULT_SECTOR_CNT      (2u)
#define DATAFLASH_FAULT_END_ADDR        (DATAFLASH_FAULT_ADDR + (DATAFLASH_FAULT_SECTOR_CNT * SPI_SECTOR_SIZE) - 1u)

#define DATAFLASH_OCPP_MV_OFFLINE_ADDR       (0x2C0000u)
#define DATAFLASH_OCPP_MV_OFFLINE_HALF_SIZE  (0x8000u)
#define DATAFLASH_OCPP_MV_OFFLINE_SECTOR_CNT (16u)
#define DATAFLASH_OCPP_MV_OFFLINE_TOTAL_SIZE (DATAFLASH_OCPP_MV_OFFLINE_HALF_SIZE * 2u)

#define DATAFLASH_CARD_ADDR             (0x222000u)
#define DATAFLASH_CARD_SECTOR_CNT       (7u)
#define DATAFLASH_CARD_END_ADDR         (DATAFLASH_CARD_ADDR + (DATAFLASH_CARD_SECTOR_CNT * SPI_SECTOR_SIZE) - 1u)

#define DATAFLASH_HIS_RECORD_ADDR       (0x230000u)
#define DATAFLASH_HIS_RECORD_END_ADDR   (0x2BFFFFu)
#define DATAFLASH_HIS_RECORD_SIZE       (DATAFLASH_HIS_RECORD_END_ADDR - DATAFLASH_HIS_RECORD_ADDR + 1u)
#define DATAFLASH_HIS_RECORD_SECTOR_CNT (DATAFLASH_HIS_RECORD_SIZE / SPI_SECTOR_SIZE)

/* Charge-order storage layout (compatible with migrated flash_file_mgr module) */
#ifndef CHG_ORDER_RECORD_SIZE
#define CHG_ORDER_RECORD_SIZE           (sizeof(S_LOG_DATA))
#endif
#ifndef CHG_ORDER_FULL_RECORD_SIZE
#define CHG_ORDER_FULL_RECORD_SIZE      (1u + CHG_ORDER_RECORD_SIZE + 1u)
#endif
#ifndef CHG_ORDER_PER_SECTOR_CNT
#define CHG_ORDER_PER_SECTOR_CNT        (SPI_SECTOR_SIZE / CHG_ORDER_FULL_RECORD_SIZE)
#endif
#ifndef CHG_ORDER_MAX_CNT
#define CHG_ORDER_MAX_CNT               (200u)
#endif

#ifndef TEMP_CHG_RECORD_SIZE
#define TEMP_CHG_RECORD_SIZE            (sizeof(S_LOG_DATA))
#endif

/* FatFs 映射区 */
#define FATFS_PHYSICAL_START_ADDR       (0xA00000u)
#define FATFS_PHYSICAL_STOP_ADDR        (EXFLASH_ADDR_MAX)
#define FATFS_PARTITION_SIZE            (FATFS_PHYSICAL_STOP_ADDR - FATFS_PHYSICAL_START_ADDR + 1u)
#define FATFS_TOTAL_SECTORS             (FATFS_PARTITION_SIZE / SPI_SECTOR_SIZE)

/* 统一对外接口：0=成功，非0=失败 */
U8_T v_flash_dataflash_init(void);
U8_T s32_flash_dataflash_write(U32_T addr, U8_T *buf, U32_T len);
U8_T s32_flash_dataflash_read(U32_T addr, U8_T *buf, U32_T len);
U8_T s32_flash_dataflash_erase_sector(U32_T addr);

/* 兼容旧接口命名 */
unsigned int SPI_flsh_ReadID(void);
void v_flash_dataflash_fatfs_esaes_sectot(void);

#endif