esp8266: Add Python modules for initial configuration.
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.
9 years ago
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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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essid = b"MicroPython-%s" % ubinascii.hexlify(ap_if.config("mac")[-3:])
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ap_if.config(essid=essid, authmode=network.AUTH_WPA_WPA2_PSK, password=b"micropythoN")
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esp8266: Add Python modules for initial configuration.
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.
9 years ago
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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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wifi()
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uos.VfsFat.mkfs(bdev)
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vfs = uos.VfsFat(bdev, "")
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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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#import esp
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#esp.osdebug(None)
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import gc
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#import webrepl
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#webrepl.start()
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gc.collect()
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""")
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return vfs
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