合宙Air105

扩展阅读：

合宙Air105|fatfs| io操作(扩展)|SPI|可调功放|I2C|SPI|toHex()|os.remove|LuatOS-SOC接口|官方demo|学习（15-1）：fatfs文件系统_打酱油的工程师的博客-CSDN博客

合宙Air103|SDIO (扩展) |LuatOS-SOC接口|官方demo|学习（15-3）：SDIO - 文件读写操作_打酱油的工程师的博客-CSDN博客

合宙Air105|SFUD库|FS|SPI FLASH|W25QXX |LuatOS-SOC接口|官方demo|学习（15-4）：SFUD库操作-外置flash_打酱油的工程师的博客-CSDN博客

-- LuaTools需要PROJECT和VERSION这两个信息
PROJECT = "fsdemo"
VERSION = "1.0.0"

log.info("main", PROJECT, VERSION)

-- sys库是标配
_G.sys = require("sys")

--添加硬狗防止程序卡死
if wdt then
    wdt.init(9000)--初始化watchdog设置为9s
    sys.timerLoopStart(wdt.feed, 3000)--3s喂一次狗
end

local function fs_test()
    -- 根目录/是可写
    local f = io.open("/boot_time", "rb")
    local c = 0
    if f then
        local data = f:read("*a")
        log.info("fs", "data", data, data:toHex())
        c = tonumber(data)
        f:close()
    end
    log.info("fs", "boot count", c)
    c = c + 1
    f = io.open("/boot_time", "wb")
    --if f ~= nil then
    log.info("fs", "write c to file", c, tostring(c))
    f:write(tostring(c))
    f:close()
    --end

    log.info("io.writeFile", io.writeFile("/abc.txt", "ABCDEFG"))

    log.info("io.readFile", io.readFile("/abc.txt"))
    local f = io.open("/abc.txt", "rb")
    local c = 0
    if f then
        local data = f:read("*a")
        log.info("fs", "data2", data, data:toHex())
        f:close()
    end

    -- seek和tell测试
    local f = io.open("/abc.txt", "rb")
    local c = 0
    if f then
        --f:seek(io.SEEK_END,3) --从5号位搜索至文档末尾
        --f:seek(io.SEEK_CUR,2) --从头开始，设置起始位置为2，
        f:seek(io.SEEK_SET,1) --设置起始位置为1，
        local data = f:read("*a")
        log.info("fs", "data3", data, data:toHex())
        f:close()
    end

    if fs then
        -- 根目录是可读写的
        log.info("fsstat", fs.fsstat("/"))
        -- /luadb/ 是只读的
        log.info("fsstat", fs.fsstat("/luadb/"))
    end
    local data = io.lsmount() --列出所有挂载点
    --lsmount	[{"fs":"lfs2","path":""},{"fs":"inline","path":"\/lua\/"},{"fs":"luadb","path":"\/luadb\/"}]
    log.info("fs", "lsmount", json.encode(data))
    --.fatfs	lsdir	[{"name":"abc.txt","type":0},{"name":"boot_time","type":0}]
    local ret, files = io.lsdir("/")  --列出根目录下的所有文件名
    log.info("fatfs", "lsdir", json.encode(files))


    -- 读取刷机时加入的文件, 并演示按行读取
    -- 刷机时选取的非lua文件, 均存放在/luadb/目录下, 单层无子文件夹
    f = io.open("/luadb/abc.txt", "rb")
    if f then
        while true do
            local line = f:read("l")
            if not line or #line == 0 then
                break
            end
            log.info("fs", "read line", line)
        end
        f:close()
        log.info("fs", "close f")
    else
        log.info("fs", "pls add abc.txt!!")
    end

    -- 文件夹操作
    sys.wait(3000)
    io.mkdir("/iot")  --建立目录命令最后不带"/"
    f = io.open("/iot/1.txt", "w+")
    if f then
        f:write("hi, LuatOS " .. os.date())
        f:close()
    else
        log.info("fs", "open file for write failed")
    end
    f = io.open("/iot/1.txt", "r")
    if f then
        local data = f:read("*a")
        f:close()
        log.info("fs", "writed data", data)
    else
        log.info("fs", "open file for read failed")
    end
end



sys.taskInit(function()
    -- 为了显示日志,这里特意延迟一秒
    -- 正常使用不需要delay
    sys.wait(1000)
    fs_test()
end)

-- 用户代码已结束---------------------------------------------
-- 结尾总是这一句
sys.run()
-- sys.run()之后后面不要加任何语句!!!!!

LOG:

[2023-02-09 21:48:14.537] main 188:APP Build release Jan  1 2023 16:20:44!
[2023-02-09 21:48:14.537] I/main LuatOS@AIR105 base 22.12 bsp V0013 32bit
[2023-02-09 21:48:14.537] I/main ROM Build: Jan  1 2023 16:20:52
[2023-02-09 21:48:14.537] D/main loadlibs luavm 204792 15376 15376
[2023-02-09 21:48:14.537] D/main loadlibs sys   397480 51072 51616
[2023-02-09 21:48:14.537] I/user.main	fsdemo	1.0.0
[2023-02-09 21:48:15.562] I/user.fs	data	22	3232	4
[2023-02-09 21:48:15.562] I/user.fs	boot count	22
[2023-02-09 21:48:15.562] I/user.fs	write c to file	23	23
[2023-02-09 21:48:15.593] I/user.io.writeFile	true
[2023-02-09 21:48:15.593] I/user.io.readFile	ABCDEFG
[2023-02-09 21:48:15.593] I/user.fs	data2	ABCDEFG	41424344454647	14
[2023-02-09 21:48:15.593] I/user.fs	data3	BCDEFG	424344454647	12
[2023-02-09 21:48:15.593] I/user.fsstat	true	128	4	4096	lfs
[2023-02-09 21:48:15.593] I/user.fsstat	true	0	0	512	luadb
[2023-02-09 21:48:15.593] I/user.fs	lsmount	[{"fs":"lfs2","path":""},{"fs":"inline","path":"\/lua\/"},{"fs":"luadb","path":"\/luadb\/"}]
[2023-02-09 21:48:15.593] I/user.fatfs	lsdir	[{"name":"abc.txt","type":0},{"name":"boot_time","type":0}]
[2023-02-09 21:48:15.593] I/user.fs	read line	ABC
[2023-02-09 21:48:15.593] I/user.fs	read line	DEF
[2023-02-09 21:48:15.602] I/user.fs	read line	XYZ
[2023-02-09 21:48:15.602] I/user.fs	close f
[2023-02-09 21:48:18.622] I/user.fs	writed data	hi, LuatOS Sun Jan  1 16:20:50 2023

PS:fs - 文件系统额外操作

fs - 文件系统额外操作

已适配 Air101/Air103 Air105 ESP32C3 Air780

备注

本页文档由这个文件自动生成。如有错误，请提交issue或帮忙修改后pr，谢谢！

小技巧

本库有专属demo，点此链接查看fs的demo例子

fs.fsstat(path)

获取文件系统信息

参数

返回值

例子

-- 打印根分区的信息

log.info("fsstat", fs.fsstat("/"))

fs.fsize(path)

获取文件大小

参数

返回值

例子

-- 打印main.luac的大小

log.info("fsize", fs.fsize("/main.luac"))