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@@ -0,0 +1,333 @@
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+--[[
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+@module tfcard_app
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+@summary TF卡文件操作测试模块
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+@version 1.0.0
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+@date 2025.08.25
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+@author 王棚嶙
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+@usage
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+本文件为TF卡的文件操作测试流程:
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+1. 创建目录
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+2. 创建并写入文件
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+3. 检查文件是否存在
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+4. 获取文件大小
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+5. 读取文件内容
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+6. 启动计数文件操作
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+7. 文件追加测试
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+8. 按行读取测试
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+9. 读取后关闭文件
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+10. 文件重命名
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+11. 列举目录内容
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+12. 删除文件
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+13. 删除目录
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+本文件没有对外接口,直接在main.lua中require "tfcard_app"就可以加载运行
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+]]
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+
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+
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+
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+
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+
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+local function tfcard_main_task() -- 开始进行主测试流程。
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+ -- ########## SPI初始化 ##########
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+ -- 在Air780EHM/EHV/EGH核心板上TF卡的的pin_cs为gpio8,spi_id为0.请根据实际硬件修改
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+ spi_id, pin_cs = 0, 8
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+ spi.setup(spi_id, nil, 0, 0, 400 * 1000)
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+ --初始化后拉高pin_cs,准备开始挂载TF卡
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+ gpio.setup(pin_cs, 1)
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+
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+
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+ -- ########## 开始进行tf卡挂载 ##########
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+ -- 挂载失败默认格式化,
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+ -- 如无需格式化应改为fatfs.mount(fatfs.SPI, "/sd", spi_id, pin_cs, 24 * 1000 * 1000, nil, 1, false),
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+ -- 一般是在测试硬件是否有问题的时候把格式化取消掉
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+ mount_ok, mount_err = fatfs.mount(fatfs.SPI, "/sd", spi_id, pin_cs, 24 * 1000 * 1000)
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+ if mount_ok then
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+ log.info("fatfs.mount", "挂载成功", mount_err)
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+ else
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+ log.error("fatfs.mount", "挂载失败", mount_err)
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+ goto resource_cleanup
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+ end
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+
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+ -- ########## 获取SD卡的可用空间信息并打印。 ##########
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+ data, err = fatfs.getfree("/sd")
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+ if data then
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+ --打印SD卡的可用空间信息
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+ log.info("fatfs", "getfree", json.encode(data))
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+ else
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+ --打印错误信息
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+ log.info("fatfs", "getfree", "err", err)
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+ goto resource_cleanup
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+ end
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+
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+ -- 列出所有挂载点,如不需要,可注释掉。
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+ data = io.lsmount()
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+ log.info("fs", "lsmount", json.encode(data))
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+
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+ -- ########## 功能: 启用fatfs调试模式 ##########
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+ -- fatfs.debug(1) -- 若挂载失败,可以尝试打开调试信息,查找原因.(设置调试模式)
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+
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+ -- 执行tfcard文件操作演示
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+ log.info("文件操作", "===== 开始文件操作 =====")
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+
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+ dir_path = "/sd/io_test"
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+
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+ -- 1. 创建目录
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+ if io.mkdir(dir_path) then
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+ log.info("io.mkdir", "目录创建成功", "路径:" .. dir_path)
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+ else
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+ -- 检查是否目录已存在
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+ if io.exists(dir_path) then
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+ log.warn("io.mkdir", "目录已存在,跳过创建", "路径:" .. dir_path)
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+ else
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+ log.error("io.mkdir", "目录创建失败且目录不存在", "路径:" .. dir_path)
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+ goto resource_cleanup
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+ end
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+ end
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+
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+ -- 2. 创建并写入文件
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+ file_path = dir_path .. "/boottime"
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+ file = io.open(file_path, "wb")
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+ if file then
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+ file:write("这是io库API文档示例的测试内容")
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+ file:close()
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+ --在LuatOS文件操作中,执行file:close()是必须且关键的操作,它用于关闭文件句柄,释放资源,并确保数据被正确写入磁盘。
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+ -- 如果不执行file:close(),可能会导致数据丢失、文件损坏或其他不可预测的问题。
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+ log.info("文件创建", "文件写入成功", "路径:" .. file_path)
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+ else
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+ log.error("文件创建", "文件创建失败", "路径:" .. file_path)
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+ goto resource_cleanup
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+ end
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+
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+ -- 3. 检查文件是否存在
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+ if io.exists(file_path) then
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+ log.info("io.exists", "文件存在", "路径:" .. file_path)
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+ else
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+ log.error("io.exists", "文件不存在", "路径:" .. file_path)
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+ goto resource_cleanup
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+ end
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+
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+ -- 4. 获取文件大小
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+ file_size = io.fileSize(file_path)
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+ if file_size then
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+ log.info("io.fileSize", "文件大小:" .. file_size .. "字节", "路径:" .. file_path)
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+ else
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+ log.error("io.fileSize", "获取文件大小失败", "路径:" .. file_path)
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+ goto resource_cleanup
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+ end
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+
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+ -- 5. 读取文件内容
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+ file = io.open(file_path, "rb")
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+ if file then
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+ content = file:read("*a")
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+ log.info("文件读取", "路径:" .. file_path, "内容:" .. content)
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+ file:close()
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+ else
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+ log.error("文件操作", "无法打开文件读取内容", "路径:" .. file_path)
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+ goto resource_cleanup
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+ end
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+
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+ -- 6. 启动计数文件操作
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+ count = 0
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+ --以只读模式打开文件
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+ file = io.open(file_path, "rb")
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+ if file then
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+ data = file:read("*a")
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+ log.info("启动计数", "文件内容:", data, "十六进制:", data:toHex())
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+ count = tonumber(data) or 0
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+ file:close()
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+ else
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+ log.warn("启动计数", "文件不存在或无法打开")
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+
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+ end
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+
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+ log.info("启动计数", "当前值:", count)
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+ count=count + 1
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+ log.info("启动计数", "更新值:", count)
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+
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+ file = io.open(file_path, "wb")
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+ if file then
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+ file:write(tostring(count))
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+ file:close()
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+ log.info("文件写入", "路径:" .. file_path, "内容:", count)
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+ else
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+ log.error("文件写入", "无法打开文件", "路径:" .. file_path)
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+ goto resource_cleanup
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+ end
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+
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+ -- 7. 文件追加测试
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+ append_file = dir_path .. "/test_a"
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+ -- 清理旧文件
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+ os.remove(append_file)
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+
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+ -- 创建并写入初始内容
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+ file = io.open(append_file, "wb")
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+ if file then
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+ file:write("ABC")
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+ file:close()
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+ log.info("文件创建", "路径:" .. append_file, "初始内容:ABC")
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+ else
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+ log.error("文件创建", "无法创建文件", "路径:" .. append_file)
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+ goto resource_cleanup
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+ end
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+
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+ -- 追加内容
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+ file = io.open(append_file, "a+")
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+ if file then
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+ file:write("def")
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+ file:close()
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+ log.info("文件追加", "路径:" .. append_file, "追加内容:def")
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+ else
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+ log.error("文件追加", "无法打开文件进行追加", "路径:" .. append_file)
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+ goto resource_cleanup
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+
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+ end
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+
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+ -- 验证追加结果
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+ file = io.open(append_file, "r")
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+ if file then
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+ data = file:read("*a")
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+ log.info("文件验证", "路径:" .. append_file, "内容:" .. data, "结果:",
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+ data == "ABCdef" and "成功" or "失败")
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+ file:close()
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+ else
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+ log.error("文件验证", "无法打开文件进行验证", "路径:" .. append_file)
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+ goto resource_cleanup
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+ end
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+
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+ -- 8. 按行读取测试
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+ line_file = dir_path .. "/testline"
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+ file = io.open(line_file, "w")
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+ if file then
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+ file:write("abc\n")
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+ file:write("123\n")
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+ file:write("wendal\n")
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+ file:close()
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+ log.info("文件创建", "路径:" .. line_file, "写入3行文本")
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+ else
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+ log.error("文件创建", "无法创建文件", "路径:" .. line_file)
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+ goto resource_cleanup
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+ end
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+
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+ -- 按行读取文件
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+ file = io.open(line_file, "r")
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+ if file then
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+ log.info("按行读取", "路径:" .. line_file, "第1行:", file:read("*l"))
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+ log.info("按行读取", "路径:" .. line_file, "第2行:", file:read("*l"))
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+ log.info("按行读取", "路径:" .. line_file, "第3行:", file:read("*l"))
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+ file:close()
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+ else
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+ log.error("按行读取", "无法打开文件", "路径:" .. line_file)
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+ goto resource_cleanup
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+ end
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+
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+ -- 9. 文件重命名
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+ old_path = append_file
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+ new_path = dir_path .. "/renamed_file.txt"
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+ success, err = os.rename(old_path, new_path)
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+ if success then
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+ log.info("os.rename", "文件重命名成功", "原路径:" .. old_path, "新路径:" .. new_path)
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+
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+ -- 验证重命名结果
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+ if io.exists(new_path) and not io.exists(old_path) then
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+ log.info("验证结果", "重命名验证成功", "新文件存在", "原文件不存在")
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+ else
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+ log.error("验证结果", "重命名验证失败")
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+ end
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+ else
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+ log.error("os.rename", "重命名失败", "错误:" .. tostring(err), "原路径:" .. old_path)
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+ goto resource_cleanup
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+ end
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+
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+ -- 10. 列举目录内容
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+ log.info("目录操作", "===== 开始目录列举 =====")
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+
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+ ret, data = io.lsdir(dir_path, 50, 0) -- 50表示最多返回50个文件,0表示从目录开头开始
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+ if ret then
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+ log.info("fs", "lsdir", json.encode(data))
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+ else
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+ log.info("fs", "lsdir", "fail", ret, data)
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+ goto resource_cleanup
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+ end
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+
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+ -- 11. 删除文件测试
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+ -- 测试删除renamed_file.txt文件
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+ if os.remove(new_path) then
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+ log.info("os.remove", "文件删除成功", "路径:" .. new_path)
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+
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+ -- 验证renamed_file.txt删除结果
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+ if not io.exists(new_path) then
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+ log.info("验证结果", "renamed_file.txt文件删除验证成功")
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+ else
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+ log.error("验证结果", "renamed_file.txt文件删除验证失败")
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+ end
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+ else
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+ log.error("io.remove", "renamed_file.txt文件删除失败", "路径:" .. new_path)
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+ goto resource_cleanup
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+ end
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+
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+ -- 测试删除testline文件
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+ if os.remove(line_file) then
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+ log.info("os.remove", "testline文件删除成功", "路径:" .. line_file)
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+
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+ -- 验证删除结果
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+ if not io.exists(line_file) then
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+ log.info("验证结果", "testline文件删除验证成功")
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+ else
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+ log.error("验证结果", "testline文件删除验证失败")
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+ end
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+ else
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+ log.error("io.remove", "testline文件删除失败", "路径:" .. line_file)
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+ goto resource_cleanup
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+ end
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+
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+ if os.remove(file_path) then
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+ log.info("os.remove", "文件删除成功", "路径:" .. file_path)
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+
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+ -- 验证删除结果
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+ if not io.exists(file_path) then
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+ log.info("验证结果", "boottime文件删除验证成功")
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+ else
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+ log.error("验证结果", "boottime文件删除验证失败")
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+ end
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+ else
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+ log.error("io.remove", "boottime文件删除失败", "路径:" .. file_path)
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+ goto resource_cleanup
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+ end
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+
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+ -- 12. 删除目录(不能删除非空目录,所以在删除目录前要确保目录内没有文件或子目录)
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+ if io.rmdir(dir_path) then
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+ log.info("io.rmdir", "目录删除成功", "路径:" .. dir_path)
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+
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+ -- 验证删除结果
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+ if not io.exists(dir_path) then
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+ log.info("验证结果", "目录删除验证成功")
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+ else
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+ log.error("验证结果", "目录删除验证失败")
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+ end
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+ else
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+ log.error("io.rmdir", "目录删除失败", "路径:" .. dir_path)
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+ goto resource_cleanup
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+ end
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+
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+ log.info("文件操作", "===== 文件操作完成 =====")
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+
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+ -- ########## 功能: 收尾功能演示##########
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+ -- 卸载文件系统和关闭SPI
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+ ::resource_cleanup::
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+
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+ log.info("结束", "开始执行关闭操作...")
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+ -- 如已挂载需先卸载文件系统,未挂载直接关闭SPI
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+ if mount_ok then
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+ if fatfs.unmount("/sd") then
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+ log.info("文件系统", "卸载成功")
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+ else
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+ log.error("文件系统", "卸载失败")
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+ end
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+ end
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+
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+ -- 2. 关闭SPI接口
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+ spi.close(spi_id)
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+ log.info("SPI接口", "已关闭")
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+
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+end
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+
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+sys.taskInit(tfcard_main_task)
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