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Javascript interface pages, for example. You cannot, however, replace the content of a file preloaded
on the module, you can only add new ones.
4.2. Limitations
The file system embedded on your Yocto-Display has some technical limitations:
• Its maximal storage space is 3.5MB, allocated in blocks enabling to store up to about 128 files.
• Erasing a file does not necessarily immediately free all the space used by the file. The non
freed space is completely reused if you create a new file with the same name, but not
necessarily if you create files with a distinct name each time. For this reason, it is not
recommended to automatically create files with ever changing names.
• You can recover the whole non freed space with the format command which frees all the files.
• Each firmware update implicitly provokes a complete reformatting of the file system.
• As all flash memories, the memory used to store the files has a life of about 100'000 erasing
cycles. It is enough, but it is not infinite. Make sure that you do not write and erase files
uselessly and very quickly in a loop, or you may destroy your module.
4. The embedded file system
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