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fatfsgen.py: enabled automatic detection of the FATFS type for FAT12 and FAT16

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This commit is contained in:
Martin Gaňo
2021-12-06 18:17:20 +01:00
parent 6ddf2ea05e
commit f3425dea96
13 changed files with 390 additions and 119 deletions
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25
components/fatfs/wl_fatfsgen.py
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@@ -52,7 +52,7 @@ class WLFATFS:
sectors_per_cluster: int = 1,
sector_size: int = 0x1000,
sectors_per_fat: int = 1,
root_dir_sectors_cnt: int = 4,
explicit_fat_type: int = None,
hidden_sectors: int = 0,
long_names_enabled: bool = False,
entry_size: int = 32,
@@ -63,8 +63,9 @@ class WLFATFS:
file_sys_type: str = 'FAT',
version: int = 2,
temp_buff_size: int = 32,
updaterate: int = 16,
update_rate: int = 16,
device_id: int = None,
root_entry_count: int = 512,
media_type: int = 0xf8) -> None:
if sector_size != WLFATFS.WL_SECTOR_SIZE:
raise NotImplementedError(f'The only supported sector size is currently {WLFATFS.WL_SECTOR_SIZE}')
@@ -74,7 +75,7 @@ class WLFATFS:
self._version = version
self._temp_buff_size = temp_buff_size
self._device_id = device_id
self._updaterate = updaterate
self._update_rate = update_rate
self.partition_size = size
self.total_sectors = self.partition_size // self.sector_size
self.wl_state_size = WLFATFS.WL_STATE_HEADER_SIZE + WLFATFS.WL_STATE_RECORD_SIZE * self.total_sectors
@@ -89,13 +90,14 @@ class WLFATFS:
self.plain_fat_sectors = self.total_sectors - wl_sectors
self.plain_fatfs = FATFS(
explicit_fat_type=explicit_fat_type,
size=self.plain_fat_sectors * self.sector_size,
reserved_sectors_cnt=reserved_sectors_cnt,
fat_tables_cnt=fat_tables_cnt,
sectors_per_cluster=sectors_per_cluster,
sector_size=sector_size,
sectors_per_fat=sectors_per_fat,
root_dir_sectors_cnt=root_dir_sectors_cnt,
root_entry_count=root_entry_count,
hidden_sectors=hidden_sectors,
long_names_enabled=long_names_enabled,
entry_size=entry_size,
@@ -127,7 +129,7 @@ class WLFATFS:
full_mem_size=self.partition_size,
page_size=self.sector_size,
sector_size=self.sector_size,
updaterate=self._updaterate,
updaterate=self._update_rate,
wr_size=16,
version=self._version,
temp_buff_size=self._temp_buff_size
@@ -149,7 +151,7 @@ class WLFATFS:
max_pos=self.plain_fat_sectors + WLFATFS.DUMMY_SECTORS_COUNT,
move_count=0,
access_count=0,
max_count=self._updaterate,
max_count=self._update_rate,
block_size=self.sector_size,
version=self._version,
device_id=self._device_id or generate_4bytes_random(),
@@ -187,12 +189,13 @@ class WLFATFS:
if __name__ == '__main__':
desc = 'Create a FAT filesystem with support for wear levelling and populate it with directory content'
args = get_args_for_partition_generator(desc)
input_dir = args.input_directory
partition_size = int(str(args.partition_size), 0)
sector_size_bytes = int(str(args.sector_size), 0)
wl_fatfs = WLFATFS(sector_size=args.sector_size,
sectors_per_cluster=args.sectors_per_cluster,
size=args.partition_size,
root_entry_count=args.root_entry_count,
explicit_fat_type=args.fat_type)
wl_fatfs = WLFATFS(size=partition_size, sector_size=sector_size_bytes)
wl_fatfs.wl_generate(input_dir)
wl_fatfs.wl_generate(args.input_directory)
wl_fatfs.init_wl()
wl_fatfs.wl_write_filesystem(args.output_file)