181 lines
4.6 KiB
C++
181 lines
4.6 KiB
C++
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#ifndef __FLASH_DRIVER_H__
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#define __FLASH_DRIVER_H__
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#include <cstdint>
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#include "common_types.h"
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/* Flash类型定义 */
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typedef enum {
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FLASH_TYPE_INTERNAL = 0, /* 内部Flash（片上Flash） */
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FLASH_TYPE_EXTERNAL_SPI, /* 外部SPI Flash */
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FLASH_TYPE_EXTERNAL_NOR, /* 外部并行NOR Flash（通过EXMC） */
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FLASH_TYPE_MAX
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} flash_type_t;
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/* Flash操作模式定义 */
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typedef enum {
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FLASH_OP_READ = 0, /* 读取操作 */
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FLASH_OP_WRITE, /* 写入操作 */
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FLASH_OP_ERASE, /* 擦除操作 */
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FLASH_OP_READ_STATUS, /* 读取状态寄存器 */
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FLASH_OP_WRITE_ENABLE, /* 写使能 */
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FLASH_OP_WRITE_DISABLE, /* 写禁用 */
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FLASH_OP_MAX
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} flash_operation_t;
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/* Flash容量信息结构体 */
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typedef struct {
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uint32_t total_size; /* 总容量（字节） */
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uint32_t sector_size; /* 扇区大小（字节） */
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uint32_t page_size; /* 页大小（字节） */
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uint32_t block_size; /* 块大小（字节） */
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uint32_t manufacturer_id; /* 制造商ID */
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uint32_t device_id; /* 设备ID */
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} flash_info_t;
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/* Flash配置结构体 */
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typedef struct {
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flash_type_t type; /* Flash类型 */
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uint32_t base_address; /* 基地址（对于内部Flash是0x08000000） */
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uint32_t clock_freq; /* 时钟频率（Hz，仅对外部Flash有效） */
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uint32_t cs_pin; /* 片选引脚（仅对外部SPI Flash有效） */
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uint32_t spi_port; /* SPI端口（仅对外部SPI Flash有效） */
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uint32_t exmc_bank; /* EXMC Bank（仅对外部NOR Flash有效） */
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} flash_config_t;
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/* Flash句柄结构体 */
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typedef struct {
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flash_type_t type; /* Flash类型 */
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flash_config_t config; /* Flash配置 */
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flash_info_t info; /* Flash信息 */
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bool initialized; /* 初始化标志 */
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void *private_data; /* 私有数据指针 */
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} flash_handle_t;
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/* 函数声明 */
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/**
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* @brief 初始化Flash
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* @param handle Flash句柄指针
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* @return 操作结果
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*/
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ret_code_t flash_init(flash_handle_t *handle);
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/**
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* @brief 反初始化Flash
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* @param handle Flash句柄指针
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* @return 操作结果
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*/
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ret_code_t flash_deinit(flash_handle_t *handle);
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/**
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* @brief 读取Flash数据
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* @param handle Flash句柄指针
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* @param address 地址（绝对地址或相对地址，取决于Flash类型）
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* @param buffer 数据缓冲区
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* @param length 数据长度（字节）
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* @return 操作结果
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*/
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ret_code_t flash_read(flash_handle_t *handle, uint32_t address, void *buffer, uint32_t length);
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/**
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* @brief 写入Flash数据
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* @param handle Flash句柄指针
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* @param address 地址（绝对地址或相对地址，取决于Flash类型）
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* @param data 数据指针
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* @param length 数据长度（字节）
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* @return 操作结果
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*/
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ret_code_t flash_write(flash_handle_t *handle, uint32_t address, const void *data, uint32_t length);
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/**
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* @brief 擦除Flash扇区
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* @param handle Flash句柄指针
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* @param address 扇区起始地址
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* @param size 擦除大小（字节），必须为扇区大小的整数倍
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* @return 操作结果
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*/
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ret_code_t flash_erase(flash_handle_t *handle, uint32_t address, uint32_t size);
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/**
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* @brief 擦除整个Flash
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* @param handle Flash句柄指针
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* @return 操作结果
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*/
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ret_code_t flash_erase_all(flash_handle_t *handle);
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/**
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* @brief 读取Flash状态寄存器
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* @param handle Flash句柄指针
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* @param status 状态值输出指针
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* @return 操作结果
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*/
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ret_code_t flash_read_status(flash_handle_t *handle, uint32_t *status);
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/**
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* @brief 写使能
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* @param handle Flash句柄指针
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* @return 操作结果
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*/
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ret_code_t flash_write_enable(flash_handle_t *handle);
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/**
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* @brief 写禁用
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* @param handle Flash句柄指针
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* @return 操作结果
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*/
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ret_code_t flash_write_disable(flash_handle_t *handle);
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/**
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* @brief 读取Flash信息
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* @param handle Flash句柄指针
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* @param info Flash信息输出指针
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* @return 操作结果
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*/
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ret_code_t flash_get_info(flash_handle_t *handle, flash_info_t *info);
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/**
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* @brief 验证Flash读写功能
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* @param handle Flash句柄指针
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* @param test_size 测试数据大小（字节）
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* @return 操作结果
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*/
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ret_code_t flash_self_test(flash_handle_t *handle, uint32_t test_size);
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/**
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* @brief 默认内部Flash初始化
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* @return 操作结果
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*/
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ret_code_t flash_internal_default_init(void);
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/**
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* @brief 默认外部SPI Flash初始化
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* @return 操作结果
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*/
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ret_code_t flash_external_spi_default_init(void);
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/**
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* @brief 获取内部Flash基地址
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* @return 内部Flash基地址（0x08000000）
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*/
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uint32_t flash_get_internal_base_address(void);
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/**
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* @brief 获取内部Flash总大小
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* @return 内部Flash总大小（字节）
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*/
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uint32_t flash_get_internal_total_size(void);
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/**
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* @brief 获取内部Flash扇区大小
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* @return 内部Flash扇区大小（字节）
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*/
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uint32_t flash_get_internal_sector_size(void);
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/**
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* @brief 获取默认外部SPI Flash句柄指针
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* @return Flash句柄指针，如果未初始化则返回NULL
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*/
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flash_handle_t *flash_get_external_spi_handle(void);
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#endif /* __FLASH_DRIVER_H__ */
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