def check():
buf = bytearray(16)
bdev.readblocks(0, buf)
if buf[3:8] == b'MSDOS':
return 'FAT'
if buf[8:16] == b'littlefs':
return 'littlefs'
return 'unknown'
def dump(line_count=4, chunk_size=16):
buf = bytearray(chunk_size)
for block_num in range(line_count):
offset = block_num * chunk_size
print('%04x - %04x' % (offset, offset + chunk_size - 1), end=' - ')
bdev.readblocks(block_num, buf)
print(' '.join('%02x' % char for char in buf), end=' - ')
print(''.join(chr(char) if 32 < char < 127 else '.' for char in buf))
def check_bootsec():
buf = bytearray(bdev.SEC_SIZE)
bdev.readblocks(0, buf)
empty = True
for b in buf:
if b != 0xFF:
empty = False
break
if empty:
return True
fs_corrupted()
def check_bootsec():
buf = bytearray(bdev.SEC_SIZE)
bdev.readblocks(0, buf)
empty = True
for b in buf:
if b != 0xff:
empty = False
break
if empty:
return True
fs_corrupted()
def check_bootsec():
buf = bytearray(bdev.ioctl(5, 0)) # 5 is SEC_SIZE
bdev.readblocks(0, buf)
empty = True
for b in buf:
if b != 0xFF:
empty = False
break
if empty:
return True
fs_corrupted()
