2 files changed, 6 insertions, 0 deletions

diff --git a/firmware/drivers/fat.c b/firmware/drivers/fat.c
index 3e43e1c787..0c8997d94a 100644
--- a/firmware/drivers/fat.c
+++ b/firmware/drivers/fat.c
@@ -1989,3 +1989,8 @@ int fat_getnext(struct fat_dir *dir, struct fat_direntry *entry)
     }
     return 0;
 }
+
+int fat_get_cluster_size(void)
+{
+    return fat_bpb.bpb_secperclus * SECTOR_SIZE;
+}
diff --git a/firmware/export/fat.h b/firmware/export/fat.h
index dbc0ab20cc..db8737cfd3 100644
--- a/firmware/export/fat.h
+++ b/firmware/export/fat.h
@@ -94,5 +94,6 @@ extern int fat_rename(struct fat_file* file,
 
 extern int fat_opendir(struct fat_dir *ent, unsigned int currdir);
 extern int fat_getnext(struct fat_dir *ent, struct fat_direntry *entry);
+extern int fat_get_cluster_size(void);
 
 #endif