40f5ecd3a8
Main entry point is _boot.py which checks whether FAT FS in flash mountable, and if so, mounts it. Otherwise, it checks if flash is empty, and if so, performs initial module setup: makes FAT FS, configures default AP name, etc. As a last option, if flash is not empty, and could not be mounted, it means filesystem corruption, and warning message with instructions is printed in an infinite loop.
32 lines
800 B
Python
32 lines
800 B
Python
import uos
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import network
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from flashbdev import bdev
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def wifi():
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import ubinascii
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ap_if = network.WLAN(network.AP_IF)
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ap_if.config(essid=b"MicroPython %s" % ubinascii.hexlify(ap_if.mac()[-3:]))
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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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