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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 filesystem starting at sector %d with size %d sectors looks corrupt.
You may want to make a flash snapshot and try to recover it. Otherwise,
format it with uos.VfsLfs2.mkfs(bdev), or completely erase the flash and
reprogram MicroPython.
"""
% (bdev.start_sec, bdev.blocks)
)
time.sleep(3)
def setup():
check_bootsec()
print("Performing initial setup")
wifi()
uos.VfsLfs2.mkfs(bdev)
vfs = uos.VfsLfs2(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 uos, machine
#uos.dupterm(None, 1) # disable REPL on UART(0)
import gc
#import webrepl
#webrepl.start()
gc.collect()
"""
)
return vfs
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