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文件系统镜像制作和烧录

FatFS 镜像
Application options  --->
     [*] Using File System Image 0  --->
        Select File System Type (FATFS)  --->
        (application/os/helloworld/lvgl/base_demo/lvgl_src/) Data Directory
        (rodata.fatfs) Image Name
         [*]   auto calcuate image size
    (1) size of cluster in fatfs image