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Update lib/oofatfs/ff.c

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Co-authored-by: Dan Halbert <halbert@halwitz.org>
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eightycc 2023-11-07 13:51:32 -08:00 committed by GitHub
parent 2e72ea99e4
commit 4560f49279
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1 changed files with 5 additions and 1 deletions
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lib/oofatfs/ff.c
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@ -5704,7 +5704,11 @@ FRESULT f_mkfs (
} }
sz_fat = (n + ss - 1) / ss; /* FAT size [sector] */ sz_fat = (n + ss - 1) / ss; /* FAT size [sector] */
sz_rsv = 1; /* Number of reserved sectors */ sz_rsv = 1; /* Number of reserved sectors */
n_rootdir = (sz_vol <= 256)? 64 : n_rootdir; /* Shrink root dir for <= 128K device */ // CIRCUITPY-CHANGE: For fewer than 256 clusters (128kB filesystem),
// shrink the root directory size from 512 entries to 128 entries. Note that
// long filenames will use two entries. This change affects only the root directory,
// not subdirectories
n_rootdir = (sz_vol <= 256) ? 128 : n_rootdir;
sz_dir = (DWORD)n_rootdir * SZDIRE / ss; /* Rootdir size [sector] */ sz_dir = (DWORD)n_rootdir * SZDIRE / ss; /* Rootdir size [sector] */
} }
b_fat = b_vol + sz_rsv; /* FAT base */ b_fat = b_vol + sz_rsv; /* FAT base */