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import uos
import network
from flashbdev import bdev
def wifi():
import ubinascii
ap_if = network.WLAN(network.AP_IF)
essid = b"MicroPython-%s" % ubinascii.hexlify(ap_if.config("mac")[-3:])
ap_if.config(essid=essid, authmode=network.AUTH_WPA_WPA2_PSK, password=b"micropythoN")
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 fs_corrupted():
import time
while 1:
print("""\
The FAT filesystem starting at sector %d with size %d sectors appears to
be corrupted. If you had important data there, you may want to make a flash
snapshot to try to recover it. Otherwise, perform factory reprogramming
of MicroPython firmware (completely erase flash, followed by firmware
programming).
""" % (bdev.START_SEC, bdev.blocks))
time.sleep(3)
def setup():
check_bootsec()
print("Performing initial setup")
wifi()
uos.VfsFat.mkfs(bdev)
vfs = uos.VfsFat(bdev)
uos.mount(vfs, '/')
with open("boot.py", "w") as f:
f.write("""\
# This file is executed on every boot (including wake-boot from deepsleep)
#import esp
#esp.osdebug(None)
import gc
#import webrepl
#webrepl.start()
gc.collect()
""")
return vfs
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