littlefs 文件系统挂载断电重启

nor挂载一个littlefs文件系统之后，再把装置断电重启，重启后装置没有运行进行？

发布于 2025-05-08 16:54:02 浏览：102 订阅该版

```c
struct fal_flash_dev nor_flash0 =
    {
            .name = NOR_FLASH_DEV_NAME,
            /* If porting this code to the device with FLASH connected to XPI1, the address must be changed to 0x90000000 */
            .addr = NOR_FLASH_MEM_BASE,
            .len = 8 * 1024 * 1024,
            .blk_size = 4096,
            .ops = { .init = init, .read = read, .write = write, .erase = erase },
            .write_gran = 1
    };

#define NOR_FLASH_DEV_NAME             "norflash0"
#define NOR_FLASH_MEM_BASE             0x80000000UL
#define NOR_FLASH_SIZE_IN_BYTES        0x800000UL
#define FAL_PART_TABLE                                                               \
{                                                                                    \
    {FAL_PART_MAGIC_WORD,       "app", NOR_FLASH_DEV_NAME,         0,           8*1024*1024,    0},\
}

int littlefsfilesystem(void)
{
    int result;

result = fal_init();
    if(result <= 0)
    {
        rt_kprintf("fal_init failed\r\n");
    }
    // 创建 FAL MTD NOR 设备
    struct rt_device *flash_dev = fal_mtd_nor_device_create("app");
    if (flash_dev == NULL)
    {
        rt_kprintf("Can't create a block device on '%s' partition.", "app");
    }

if (dfs_mount(flash_dev->parent.name, "/", "lfs", 0, 0) == 0)
    {
		rt_kprintf("Filesystem %s is mounted directly! mount point name is %s\r\n","lfs",flash_dev->parent.name);
	}
    else
    {
    	rt_kprintf("Directly mount lfs failed, formatting...\n");

// 检查是否为 MTD 设备
		if (flash_dev->type != RT_Device_Class_MTD)
		{
			rt_kprintf("Error: %s is not an MTD device!\n", flash_dev->parent.name);
			result = -RT_ERROR;
			goto __exit;
		}

// 格式化
    	result = dfs_mkfs("lfs", "app");
		if(result)
		{
			rt_kprintf("dfs_mkfs app on the block device result:%d!\r\n",result);
			goto __exit;
		}

//挂载 spi flash 中名为 "app" 的分区上的文件系统
		if (dfs_mount(flash_dev->parent.name, "/", "lfs", 0, 0) == 0)
		{
			rt_kprintf("Filesystem %s is mounted! mount point name is %s\r\n","lfs",flash_dev->parent.name);
		}
		else
		{
			rt_kprintf("Failed to initialize %s!\r\n",flash_dev->parent.name);
		}
    }
    DIR* dir_tmp = opendir("/nor");
	if(dir_tmp == RT_NULL)
	{
		result = mkdir("/nor", 0777);
		if(result)
		{
			rt_kprintf("mkdir %s failed\r\n","/nor");
			return result;
		}
	}
	else
	{
		closedir(dir_tmp);
	}

result = RT_EOK;
__exit:
    return result;
}

int main(void)
{
	printf("go into main  ! world\r\n");
	static uint32_t led_thread_arg = 0;
	int ret;

app_init_led_pins();
    rt_thread_t led_thread = rt_thread_create("led_th", thread_entry, &led_thread_arg, 1024, 30, 10);
    rt_thread_startup(led_thread);

init_gpio_pins();

//    rt_kprintf("RT_HW_HEAP_BEGIN=%02x RT_HW_HEAP_END=%02x\r\n",RT_HW_HEAP_BEGIN,RT_HW_HEAP_END);
//    ret = sdram_test();

ret = littlefsfilesystem();
    rt_kprintf("littlefs_test  ret=%d\r\n",ret);

ret = Yaffs2filesystem();
	rt_kprintf("Yaffs2filesystem  ret=%d\r\n",ret);

return 0;
}
```
装置再main中挂载一个littlefs文件系统，并再这个文件系统中创建一个文件夹，然后断电重启装置，装置没有再次正常启动程序，从串口看到得信息如下：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20250508/ea887c5cbf113b8fa6c73f20382daffa.png)
如果想要再次正常启动，就需要重新烧录程序，很奇怪，但是如果把文件系统挂载屏蔽掉，装置就能正常断电重启，有没有大佬能帮忙看一下？