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.
2016-04-11 22:37:04 +01:00
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import uos
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import network
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from flashbdev import bdev
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2020-02-27 04:36:53 +00:00
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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.
2016-04-11 22:37:04 +01:00
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def wifi():
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import ubinascii
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2020-02-27 04:36:53 +00:00
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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.
2016-04-11 22:37:04 +01:00
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ap_if = network.WLAN(network.AP_IF)
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2016-05-03 00:16:42 +01:00
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essid = b"MicroPython-%s" % ubinascii.hexlify(ap_if.config("mac")[-3:])
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2016-04-11 22:46:04 +01:00
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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.
2016-04-11 22:37:04 +01:00
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2020-02-27 04:36:53 +00:00
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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.
2016-04-11 22:37:04 +01:00
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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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2020-02-27 04:36:53 +00:00
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if b != 0xFF:
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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.
2016-04-11 22:37:04 +01:00
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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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2020-02-27 04:36:53 +00:00
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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.
2016-04-11 22:37:04 +01:00
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def fs_corrupted():
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import time
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2020-02-27 04:36:53 +00:00
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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.
2016-04-11 22:37:04 +01:00
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while 1:
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2020-02-27 04:36:53 +00:00
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print(
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"""\
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2020-11-16 19:51:37 +00:00
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The filesystem starting at sector %d with size %d sectors appears to
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2017-01-02 15:52:35 +00:00
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be corrupted. If you had important data there, you may want to make a flash
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snapshot to try to recover it. Otherwise, perform factory reprogramming
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of MicroPython firmware (completely erase flash, followed by firmware
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programming).
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2020-02-27 04:36:53 +00:00
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"""
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% (bdev.START_SEC, bdev.blocks)
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)
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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.
2016-04-11 22:37:04 +01:00
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time.sleep(3)
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2016-04-29 18:02:59 +01:00
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2020-02-27 04:36:53 +00:00
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2016-04-29 18:02:59 +01:00
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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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esp8266: Change from FAT to littlefs v2 as default filesystem.
This commit changes the esp8266 boards to use littlefs v2 as the
filesystem, rather than FAT. Since the esp8266 doesn't expose the
filesystem to the PC over USB there's no strong reason to keep it as FAT.
Littlefs is smaller in code size, is more efficient in use of flash to
store data, is resilient over power failure, and using it saves about 4k of
heap RAM, which can now be used for other things.
This is a backwards incompatible change because all existing esp8266 boards
will need to update their filesystem after installing new firmware (eg
backup old files, install firmware, restore files to new filesystem).
As part of this commit the memory layout of the default board (GENERIC) has
changed. It now allocates all 1M of memory-mapped flash to the firmware,
so the filesystem area starts at the 2M point. This is done to allow more
frozen bytecode to be stored in the 1M of memory-mapped flash. This
requires an esp8266 module with 2M or more of flash to work, so a new board
called GENERIC_1M is added which has the old memory-mapping (but still
changed to use littlefs for the filesystem).
In summary there are now 3 esp8266 board definitions:
- GENERIC_512K: for 512k modules, doesn't have a filesystem.
- GENERIC_1M: for 1M modules, 572k for firmware+frozen code, 396k for
filesystem (littlefs).
- GENERIC: for 2M (or greater) modules, 968k for firmware+frozen code,
1M+ for filesystem (littlefs), FAT driver also included in firmware for
use on, eg, external SD cards.
2020-03-26 11:35:32 +00:00
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uos.VfsLfs2.mkfs(bdev)
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vfs = uos.VfsLfs2(bdev)
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2020-02-27 04:36:53 +00:00
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uos.mount(vfs, "/")
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2017-01-27 04:16:08 +00:00
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with open("boot.py", "w") as f:
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2020-02-27 04:36:53 +00:00
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f.write(
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"""\
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2016-04-29 18:11:48 +01:00
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# This file is executed on every boot (including wake-boot from deepsleep)
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2016-08-06 13:27:38 +01:00
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#import esp
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#esp.osdebug(None)
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2018-05-15 06:13:58 +01:00
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import uos, machine
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2019-01-09 13:53:38 +00:00
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#uos.dupterm(None, 1) # disable REPL on UART(0)
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2016-07-02 17:20:13 +01:00
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import gc
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2016-05-07 18:04:45 +01:00
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#import webrepl
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#webrepl.start()
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2016-07-02 17:20:13 +01:00
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gc.collect()
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2020-02-27 04:36:53 +00:00
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"""
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)
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2016-04-29 18:02:59 +01:00
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return vfs
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