esp8266 network run wlan.connect esp8266 restart

[skylin008]

The firmware version for:MicroPython v1.6-312-gb4070ee-dirty on 2016-03-29; ESP module with ESP8266

when I run follow code,esp8266-12f restart.

Code: Select all

import network
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.isconnected()
False
wlan.connect('essid', 'password')   #essid and password from router distribution

the esp8266-12f restart every time.

How to fix this issue?Tks!

[deshipu]

I can confirm the same problem with the recent code from the repository (as of 8fc5e56a6a06523ff864d309c7718885a990cb2b).

Also. WLAN.scan() no longer works:

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>>> wlan.scan()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: argument num/types mismatch

[deshipu]

I suppose that part is still "under construction"

[pfalcon]

The original issue was fixed, see https://github.com/micropython/micropython/issues/1942 .

[wendlers]

Hi, deshipu,

Also. WLAN.scan() no longer works:

Code: Select all

>>> wlan.scan()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: argument num/types mismatch

"wlan.scan" needs a callback as an argument (taking a tuple as parameter). E.g. the following works for me:

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>>> os.uname()
(sysname='ESP8266', nodename='ESP8266', release='1.5.2(80914727)', version='v1.6-318-gd88250c on 2016-03-29', machine='ESP module with ESP8266')

def scan_found(t):
    print("found:", t)
 
>>> wlan.scan(scan_found)

[pfalcon]

wlan.scan() was switched from callback to return result synchronously in alpha. I had an idea to keep supporting callback, but as I'm deep into other stuff, have merged it as is to avoid confusion.

[wendlers]

Now (using, 61fa7c81527016be164321c442fe5317daa260ee), I think I get the same behavior as initially described in this post:

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MicroPython v1.6-327-g61fa7c8 on 2016-03-30; ESP module with ESP8266
Type "help()" for more information.
>>> import network
>>> wlan = network.WLAN(network.STA_IF)
>>> wlan.active()
False
>>> wlan.active(True)
mode : sta(5c:cf:7f:11:62:85) + softAP(5e:cf:7f:11:62:85)
#5 ets_task(40214e78, 28, 3fffad60, 10)
add if0
>>> wlan.active()
True
>>> wlan.connect('xxxx', 'yyyy')
Fatal exception 3(LoadStoreErrorCause):
epc1=0x4000deed, epc2=0x00000000, epc3=0x00000000, excvaddr=0x40000040, depc=0x00000000

 ets Jan  8 2013,rst cause:2, boot mode:(1,6)

I tired to figure out, why "connect" seamed to be working before with code from the repository, and so far it looks like so:

When I deploy the firmware from the repository to a clean board (clean flash), or a board that was treated with "esptool.py erase_flash", I get the above behavior.

However when using a board that was previously flashed with ALPHA v02, and had a working (and thus stored connection), then a version deployed from the repo (without doing a flash erase before), is able to use "connect" without a restart. This is even true when connecting to different APs:

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MicroPython v1.6-327-g61fa7c8 on 2016-03-30; ESP module with ESP8266
Type "help()" for more information.
>>> import network
>>> wlan = network.WLAN(network.STA_IF)
>>> wlan.active(True)
>>> wlan.isconnected()
True
>>> wlan.disconnect()
state: 5 -> 0 (0)
rm 0
>>> wlan.connect('aaa', 'bbb')
f r0, >>> scandone
state: 0 -> 2 (b0)
state: 2 -> 3 (0)
state: 3 -> 5 (10)
add 0
aid 26
cnt 

connected with aaa, channel 11
dhcp client start...
ip:192.168.x.y,mask:255.255.255.0,gw:192.168.x.y

[gschmott]

I'm seeing identical behavior with today's latest commit (61fa7c81527016be164321c442fe5317daa260ee). I erase the flash using esptool.py and then try the following:

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>>> import network
>>> wlan = network.WLAN(network.STA_IF)
>>> wlan.active(True)
>>> wlan.isconnected()
False
>>> wlan.connect('xxxxx', 'yyyyy')
Fatal exception 3(LoadStoreErrorCause):
epc1=0x4000deed, epc2=0x00000000, epc3=0x00000000, excvaddr=0x40000008, depc=0x00000000

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

Unfortunately, I don't have access to one of the early apha releases. It also looks like os.listdir('.') isn't too happy either:

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>>> import os
>>> os.listdir('.')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
OSError: 19
>>>

I wonder if they are somehow related if the network configuration is being stored/retrieve from flash?

Thoughts?

[deshipu]

The issue for this is https://github.com/micropython/micropython/issues/1946

[spirkaa]

I still get this error on WeMos D1 mini with MicroPython v1.8-89-gf9dc644-dirty on 2016-05-20, but can avoid it. What i do:
1. Flash WiFiClientBasic.ino example from Arduino esp8266 with my ssid & password
2. Flash micropython WITHOUT erase_flash
3. Run repl, paste and run do_connect()