Previously `tests/pkg_littlefs2` crashed on the `samr21-xpro`. This
now aligns the buffers in `littlefs2_desc_t` to the alignment
requirement of `uint32_t`.
Specifically the issue causing the crash at hand was that
`struct lfs_free::buffer` is of type `uint32_t *`, so access are
expected to be aligned to `uint32_t`. After this commit, this
assumption is fulfilled.
Previously `tests/pkg_littlefs` crashed on the `samr21-xpro`. This
now aligns the buffers in `littlefs_desc_t` to the alignment
requirement of `uint32_t`.
Specifically the issue causing the crash at hand was that
`lfs_free_t::buffer` is of type `uint32_t *`, so access are expected
to be aligned to `uint32_t`. After this commit, this assumption is
fulfilled.
This makes FAT behave more like the other file systems supported by VFS.
The `fatfs_mtd_devs` array is populated internally so the application does
not have to handle this.
Two new fileds added in spiffs descriptor:
- base_addr: base address of the partition
- part_block_count: number of sectors in the partition
If part_block_count is 0, the whole underlying MTD is used
