5 littlefs 挂载第二个分区失败

发布于 2021-06-16 14:21:00 浏览：1358 订阅该版

挂载第一个分区后，新建目录，用于挂载download分区，但是挂载失败
```c
int result = 0;
	#ifdef PKG_USING_FAL
		// 初始化 fal    
		fal_init();
	#else
		return;
	#endif
	
	#ifdef PKG_USING_LITTLEFS
	#define LITTLEFS_PARTITION_NAME  "littlefs"
	struct rt_device *mtd_dev = RT_NULL;
    // 创建 mtd 设备
    mtd_dev = fal_mtd_nor_device_create(LITTLEFS_PARTITION_NAME);
    if (!mtd_dev)
    {
        LOG_E("Can't create a mtd device on '%s' partition.", LITTLEFS_PARTITION_NAME);
    }
    else
    {
        // 挂载littlefs
        // 参数: 块设备名、文件系统挂载点路径,挂载文件系统类型,读写标志位,文件系统的私有数据
        if (dfs_mount(LITTLEFS_PARTITION_NAME, "/", "lfs", 0, 0) == 0)
        {
            LOG_I("para initialized!");
        }
        else
        {
            /* 格式化文件系统 */
            dfs_mkfs("lfs", LITTLEFS_PARTITION_NAME);
            /* 挂载 littlefs */
            if (dfs_mount(LITTLEFS_PARTITION_NAME, "/", "lfs", 0, 0) == 0)
            {
                LOG_I("%s initialized!",LITTLEFS_PARTITION_NAME);
            }
            else
            {
                LOG_E("Failed to initialize %s!",LITTLEFS_PARTITION_NAME);
				result = -1;
            }
        }
    }
	if(result == 0)
	{
		#define LITTLEFS_PARTITION_NAME2 "download"
		mtd_dev = fal_mtd_nor_device_create(LITTLEFS_PARTITION_NAME2);
		if (!mtd_dev)
		{
			LOG_E("Can't create a mtd device on '%s' partition.", LITTLEFS_PARTITION_NAME2);
		}
		else
		{
			if(opendir("/c") == RT_NULL)
			{
			   mkdir("c",0);
			}
			
			if (dfs_mount(LITTLEFS_PARTITION_NAME2, "/c", "lfs", 0, 0) == 0)
			{
				LOG_I("%s Filesystem initialized!",LITTLEFS_PARTITION_NAME2);
			}
			else
			{
				dfs_mkfs("lfs", LITTLEFS_PARTITION_NAME2);
				if (dfs_mount(LITTLEFS_PARTITION_NAME2, "/c", "lfs", 0, 0) == 0)	
					LOG_I("%s Filesystem initialized!",LITTLEFS_PARTITION_NAME2);
				else 
					LOG_E("Failed to initialize %s!",LITTLEFS_PARTITION_NAME2);
			}
		}
	}
	
	#endif
	
	#ifdef PKG_USING_EASYFLASH
	/* easyflash init */
		easyflash_init();
	#endif	
```

mtd设备是正常创建的，
```
device           type         ref count
-------- -------------------- ----------
download MTD Device           0       
littlefs MTD Device           1       
norflash Block Device         0       
adc1     Miscellaneous Device 0       
pwm2     Miscellaneous Device 0       
pwm1     Miscellaneous Device 0   
```
刚开始使用文件系统，求大佬指导下，问题在哪。。