112 lines
4.0 KiB
C
112 lines
4.0 KiB
C
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#ifndef __W25Q64_H
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#define __W25Q64_H
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#include <stdint.h>
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#include "main.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* -------------------------------------------------
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* W25Q64 外部 SPI Flash 驱动接口
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* 硬件连接（软件 SPI，任意 GPIO）:
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* CS -> PB4
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* CLK -> PB3
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* DO -> PB5 (Flash 数据输出 / MCU 输入)
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* DI -> PA15 (Flash 数据输入 / MCU 输出)
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* ------------------------------------------------- */
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#define W25Q64_FLASH_SIZE (8ul * 1024 * 1024) /* 8MB */
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#define W25Q64_SECTOR_SIZE 4096u
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#define W25Q64_BLOCK_SIZE 65536u
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#define W25Q64_PAGE_SIZE 256u
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#define W25Q64_JEDEC_ID 0xEF4017u /* W25Q64JV */
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/* 命令字 */
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#define W25Q64_CMD_WRITE_ENABLE 0x06u
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#define W25Q64_CMD_WRITE_DISABLE 0x04u
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#define W25Q64_CMD_READ_STATUS1 0x05u
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#define W25Q64_CMD_READ_DATA 0x03u
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#define W25Q64_CMD_PAGE_PROGRAM 0x02u
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#define W25Q64_CMD_SECTOR_ERASE 0x20u
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#define W25Q64_CMD_BLOCK_ERASE 0xD8u
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#define W25Q64_CMD_CHIP_ERASE 0xC7u
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#define W25Q64_CMD_READ_ID 0x9Fu
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/* 外部 Flash 分区布局（每个区 256KB，足够放下 224KB 的 APP） */
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#define W25Q64_SLOT_SIZE 0x40000u /* 256KB */
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#define W25Q64_SLOT_BACKUP_ADDR 0x000000u /* 槽 A：旧版本 / 回退镜像 */
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#define W25Q64_SLOT_NEW_ADDR 0x040000u /* 槽 B：新下载的固件 */
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/* 信息区：两个独立的 4KB 扇区，双副本冗余，必须避开固件槽 B 的 0x040000~0x07FFFF */
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#define W25Q64_INFO_SECTOR_A 0x080000u
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#define W25Q64_INFO_SECTOR_B 0x081000u
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#define W25Q64_INFO_MAGIC 0x5741544Fu /* 'WATO' */
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/* OTA 状态 */
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#define W25Q64_STATE_IDLE 0u
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#define W25Q64_STATE_DOWNLOADED 1u
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#define W25Q64_STATE_COPYING 2u
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#define W25Q64_STATE_INSTALLED 3u
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#define W25Q64_STATE_ROLLBACK 4u
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#define W25Q64_MAX_TRIALS 3u
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#pragma pack(push, 1)
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typedef struct {
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uint32_t magic; /* 0x5741544F */
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uint32_t sequence; /* 写入序号，越大越新 */
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uint16_t new_version; /* 新版本号 */
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uint32_t new_size; /* 新固件大小 */
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uint16_t new_crc16; /* 新固件 MODBUS CRC16 */
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uint8_t new_valid; /* 槽 B 固件是否有效 */
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uint8_t update_state; /* 当前 OTA 状态 */
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uint16_t boot_trial_count; /* 已尝试启动次数 */
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uint8_t app_confirmed; /* APP 运行稳定后置 1 */
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uint8_t reserved1;
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uint16_t backup_version; /* 备份固件版本号 */
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uint32_t backup_size; /* 备份固件大小 */
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uint16_t backup_crc16; /* 备份固件 CRC16 */
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uint8_t backup_valid; /* 槽 A 备份是否有效 */
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uint8_t reserved2;
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uint16_t checksum; /* 前面所有字节累加和 */
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} W25Q64_OtaInfo;
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#pragma pack(pop)
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/* 基础 SPI Flash 操作 */
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uint8_t W25Q64_Init(void);
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void W25Q64_ReadID(uint8_t *id3);
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uint8_t W25Q64_ReadStatus(void);
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void W25Q64_WaitBusy(void);
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void W25Q64_WriteEnable(void);
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void W25Q64_SectorErase(uint32_t addr);
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void W25Q64_BlockErase(uint32_t addr);
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void W25Q64_ChipErase(void);
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void W25Q64_PageProgram(uint32_t addr, const uint8_t *data, uint16_t len);
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void W25Q64_Read(uint32_t addr, uint8_t *buf, uint32_t len);
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void W25Q64_EraseRegion(uint32_t addr, uint32_t size);
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int W25Q64_WriteBuffer(uint32_t addr, const uint8_t *data, uint32_t len);
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int W25Q64_Verify(uint32_t addr, const uint8_t *data, uint32_t len);
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/* OTA 专用信息区操作 */
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int W25Q64_OTA_ReadInfo(W25Q64_OtaInfo *info);
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int W25Q64_OTA_WriteInfo(const W25Q64_OtaInfo *info);
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int W25Q64_OTA_SetNewInfo(uint16_t version, uint32_t size, uint16_t crc16);
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int W25Q64_OTA_SetBackupInfo(uint32_t size, uint16_t crc16);
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int W25Q64_OTA_ClearNew(void);
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int W25Q64_OTA_SetState(uint8_t state);
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int W25Q64_OTA_IncTrial(void);
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int W25Q64_OTA_SetConfirmed(void);
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int W25Q64_OTA_ClearConfirmed(void);
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uint16_t W25Q64_CRC16(const uint8_t *data, uint32_t len);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __W25Q64_H */
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