39 lines
961 B
Python
39 lines
961 B
Python
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import uos
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from flashbdev import bdev
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def check_bootsec():
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buf = bytearray(bdev.SEC_SIZE)
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bdev.readblocks(0, buf)
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empty = True
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for b in buf:
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if b != 0xff:
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empty = False
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break
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if empty:
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return True
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fs_corrupted()
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def fs_corrupted():
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import time
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while 1:
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print("""\
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FAT filesystem appears to be corrupted. If you had important data there, you
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may want to make a flash snapshot to try to recover it. Otherwise, perform
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factory reprogramming of MicroPython firmware (completely erase flash, followed
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by firmware programming).
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""")
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time.sleep(3)
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def setup():
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check_bootsec()
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print("Performing initial setup")
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uos.VfsFat.mkfs(bdev)
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vfs = uos.VfsFat(bdev)
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uos.mount(vfs, '/flash')
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uos.chdir('/flash')
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with open("boot.py", "w") as f:
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f.write("""\
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# This file is executed on every boot (including wake-boot from deepsleep)
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""")
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return vfs
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