Net connection broken in ESP8266WiFi library Version 2.5.0 or later #6138

SteveRMann · 2019-05-24T04:10:01Z

----------------------------- Delete below -----------------------------
----------------------------- Delete above -----------------------------

Basic Infos

[x ] This issue complies with the issue POLICY doc.
[x ] I have read the documentation at readthedocs and the issue is not addressed there.
[x ] I have tested that the issue is present in current master branch (aka latest git).
[ x] I have searched the issue tracker for a similar issue.
[ x] If there is a stack dump, I have decoded it.
[x ] I have filled out all fields below. (As best as I can)

Platform

Hardware: NodeMCU, Wemos D1 mini
Core Version: See my description
Development Env: Arduino IDE
Operating System: Windows 10

Settings in IDE

Module: Lolin(Wemos D1) R2 & mini|NodeMCU 1.0 (ESP-12E Module)
Flash Mode: not shown in tools
Flash Size: 4M(1M SPIFFS)
lwip Variant: v2 Lower Memory
Reset Method: not shown in tools
Flash Frequency: not shown in tools
CPU Frequency: 80Mhz
Upload Using: not shown in tools
Upload Speed: 921600

Problem Description

I spent two days chasing this down, but you get the workaround in 2 minutes. I suspect that this problem may be unique to my environment, but here is what I found.

I have a few Wemos D1 Mini boards and NodeMCU boards that were working on the local WiFi yesterday, yet today none of them will connect after compiling and uploading to the Wemos or NodeMCU. More puzzling is that I can flash Tasmota on them and they all connect to the WiFi, but none with this code that was working yesterday. I recalled after a day of troubleshooting that I did a libraries upgrade.

I modified an example sketch (below) that just tries to connect to my local network, and instead of the marching dots, I show the WiFi.status().

 while (WiFi.status() != WL_CONNECTED) { 
    delay(1000);
    Serial.print(WiFi.status()); Serial.print(' ');
  }

I have determined that if I use ESP8266WiFi library Version 2.5.0 or later, this is what the sketch below returns:

Connecting to Kaywinnet ...
6 6 6 6 6 6 6 6 1 1 1 1 1 1 1 1 1 1 1 1 1 ... forever

(6=WL_DISCONNECTED, and 1=WL_NO_SSID_AVAIL)

By reverting to ESP8266WiFi library Version 2.4.2, I can get a connection:

Connecting to Kaywinnet ...
6 6 6 6 6 6 3 

Connection established!
IP address:	192.168.1.36
Mode: STA+AP
PHY mode: N
Channel: 6
AP id: 0
Status: 5
Auto connect: 1
SSID (9): Kaywinnet
Passphrase (10): 806194xxxx
BSSID set: 0

(3=WL_CONNECTED)

Debug Messages

None

Additional information:
My router is an Actiontec MI424WR on Verizon Wireless.
I don't know if it's related, but I have had a connection problem from Raspberry Pi's which was resolved by removing the quotes from the wpa_supplicant.conf file:

network={
        ssid="Kaywinnet"
        key_mgmt=NONE
        wep_key0=806194xxxx
}

The text was updated successfully, but these errors were encountered:

philbowles · 2019-06-03T17:02:49Z

watching this: I have a (possibly) similar problem

SteveRMann · 2019-06-03T17:51:34Z

watching this: I have a (possibly) similar problem

Which problem? That ESP8266WiFi library Version 2.5.0 or later will not connect to WiFi?
If so, I am happy that I am not the only one experiencing this problem.

manumdk · 2019-06-03T20:49:56Z

I've the same problem, did you solve the lost of connections ?

d-a-v · 2019-06-03T20:55:12Z

Please try version 2.5.2, and use the tool menu option "Erase All Flash".
Once is sufficient, the option needs to be set back to "Only Sketch" by hand.
Please report back.

SteveRMann · 2019-06-03T22:45:04Z

I'm not sure to whom you are directing the request, but here is my test sketch:

#include <ESP8266WiFi.h>

const char* ssid = "Kaywinnet";
const char* password = "806194xxxx";

void setup() {
  Serial.begin(115200);
  delay(10);
  Serial.println('\n');

  WiFi.disconnect();
  delay(100);

  WiFi.begin(ssid, password);
  Serial.print("Connecting to ");
  Serial.print(ssid);
  Serial.println(" ...");

  while (WiFi.status() != WL_CONNECTED) { 
    delay(1000);
    Serial.print(WiFi.status()); Serial.print(' ');
  }

  Serial.println('\n');
  Serial.println("Connection established!");
  Serial.print("IP address:\t");
  Serial.println(WiFi.localIP());
  WiFi.printDiag(Serial);
  Serial.println();
}

void loop() {}

I installed esp8266 Version 2.5.2, flashed (selecting "all flash contents"). This is what I get:

Connecting to Kaywinnet ...
6 6 6 6 6 6 6 6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Reinstalled Version 2.4.2, flashed as above, and this is what I get:

Connecting to Kaywinnet ...
6 6 6 6 6 6 3

Connection established!
IP address: 192.168.1.58
Mode: STA+AP
PHY mode: N
Channel: 6
AP id: 0
Status: 5
Auto connect: 1
SSID (9): Kaywinnet
Passphrase (10): 806194xxxx
BSSID set: 0

cfarny · 2019-06-05T02:31:03Z

I have the similar problem with my Feather Huzzah. It will successfully connect via the HTTPSRequest example when using the 2.4.2 library but not with 2.5.1 or 2.5.2. I tried the Erase Flash option 'All Flash Contents' initially and switched to 'Only Sketch' afterwards. It will connect to my WiFi network but not to api.github.com ("connection failed").

Does the erase 'All Flash Contents' constitute a reflash of the firmware for an upgrade to the library?

JAndrassy · 2019-06-05T05:28:15Z

I believe this problem is caused by ignoring RF settings area on flash. The AT firmware reference has:

RF parameter values, has to be downloaded into flash at least once. If the RF_CAL parameter area is initialized with blank.bin, this esp_init_data_default.bin has to be downloaded too.

The location of RF parameters area depends on the size of the flash. The application must be flashed with the right flash size for SDK to find the RF parameters area.

The esp8266 uses the values in esp_init_data_default.bin as start values for RF calibration. Sometimes It can calibrate starting with wrong values, sometimes not. Different SDK versions may have different default values.

SteveRMann · 2019-06-05T16:25:52Z

Jandrassy- perhaps I wasn't clear. I have tried the experiment on several Wemos D1 Mini's and some NodeMCU boards. I've tried Erase Flash: "Only Sketch", "Sketch + WiFi Settings" and "All Flash Contents".
In all cases no board will connect to WiFi if ESP8266 Version 2.5.0 or later is installed. All boards will connect just fine with ESP8266 Version 2.4.2 installed.

Something has changed in the library.

JAndrassy · 2019-06-05T19:58:28Z

the esp8266 core uses Espressif SDK. 2.4.2 has a different SDK version then 2.5.0.
in 2.5.2 you can select the SDK in tools menu for Generic esp8266

generic.menu.sdk.nonosdk221=nonos-sdk 2.2.1 (legacy)
generic.menu.sdk.nonosdk221.build.sdk=NONOSDK221
generic.menu.sdk.nonosdk222=nonos-sdk 2.2.2-190313 (testing)
generic.menu.sdk.nonosdk222.build.sdk=NONOSDK22x
generic.menu.sdk.nonosdk3v0=nonos-sdk pre-3 (known issues)
generic.menu.sdk.nonosdk3v0.build.sdk=NONOSDK3V0

default for other boards is build.sdk=NONOSDK221
all previous esp8266 core version used 2.2.1, only 2.5.0 had SDK3

SteveRMann · 2019-06-05T21:02:18Z

And, that fixes the problem, how?
Look, I am a lowly Arduino IDE user, not a developer. What surprises me is that there are so few with this issue.

JAndrassy · 2019-06-05T21:09:15Z

And, that fixes the problem, how?
Look, I am a lowly Arduino IDE user, not a developer. What surprises me is that there are so few with this issue.

did you try 2.5.2?

SteveRMann · 2019-06-05T22:42:50Z

Yes, and I posted my test sketch and the results above. #6138 (comment)

JAndrassy · 2019-06-06T09:58:03Z

did you try without WiFi.disconnect(); or with WiFi.setAutoConnect(false);

SteveRMann · 2019-06-06T21:08:49Z

Didn't fix it. And I did use "Erase Flash: All Flash Content". Tried it on two different boards (a NodeMCU and a Wemos D1 Mini).
2.4.2 works, 2.5.2 does not.

JAndrassy · 2019-06-07T17:41:53Z

can you try WPA authentication?

SteveRMann · 2019-06-08T03:27:51Z

can you try WPA authentication?

This is a home router- there is no username or password. Or am I not understanding WPA? I couldn't find any examples using Professor Google.

JAndrassy · 2019-06-08T04:51:42Z

WEP has a passphrase, WPA has password. both are set the same way, as second parameter in WiFi.begin. you could try a smartphone as WiFi hotspot

SteveRMann · 2019-06-08T15:10:44Z

Yes. Version 2.5.2 does connect to my phone as a hot spot. But not to my home network. Does this give a clue what is happening?

I went to my router to see if there was a setting for WPA, and it was hidden under four different pages on the router. I turned on WPA, which turned off WEP automatically. To maintain some compatibility, I gave it an ascii password that was the same as the WEP passphrase. So, yes, not V2.5.2 does connect to my network. But that created all new problems. I have 65 devices on my IP scan, and after turning on WPA, only 20 of them would reconnect over WPA. Fixing that would be a full-day job in itself because many of these devices are inside wall-boxes, inside of appliances and generally inconvenient to get to the flash pins. Then I would have to find the sketches for each device that aren't running Tasmota.

So, in summary, you are saying that V2.5.X of ESP8266WIFI.h does not support WEP?

JAndrassy · 2019-06-08T16:58:30Z

it should support WEP. how long is your paraphrase? 64 characters? or shorter?
@devyte ?

SteveRMann · 2019-06-09T04:11:07Z

Thanks for working with me in this issue.
My WEP passphrase is 10 hex characters.

When I tried setting up WPA on the router I used the same hex characters as an ASCII password. I really, really want to avoid reprogramming all of the devices on my network.

cfarny · 2019-06-13T13:07:31Z

None of these suggestions fix the problem of 2.5.2 (or anything higher than 2.4.2) preventing my feather huzzah from connecting to a known website, through either my phone hotspot or my home network (using WPA). I've tried the Generic ESP8266 profile as well as the Adafruit Feather Huzzah profile that corresponds to my device.

Any other suggestions out there? Could this be related to the manufacture date/version of my device?

JAndrassy · 2019-06-13T13:10:20Z

None of these suggestions fix the problem of 2.5.2 (or anything higher than 2.4.2) preventing my feather huzzah from connecting to a known website, through either my phone hotspot or my home network (using WPA).

2.4.2 works and 2.5.2 does not?

cfarny · 2019-06-13T13:12:21Z

Yes, 2.4.2 works for http, on my phone hot spot & home router. I'd like to upgrade to 2.5.2 because I'm unable to connect to some secure sites via HTTPS, and I'm hoping the newer libraries resolve some of these related issues.

danbates2 · 2019-06-13T14:30:52Z

DHPC is where 2.5.2 gets stuck for me. The AP broadcast by the ESP shows on my laptop, but I can't connect to it. 2.4.2 works fine.
https://github.com/openenergymonitor/EmonESP/blob/master/src/wifi.cpp

d-a-v · 2019-06-17T22:58:59Z

@SteveRMann
Can you try to call

WiFi.enableInsecureWEP();

before WiFi.begin(...) ?

SteveRMann · 2019-06-18T15:13:35Z

calling
WiFi.enableInsecureWEP();
before WiFi.begin() appears to have fixed this issue. At least in my brief test.

Thanks for pointing me to this new member of the class. I did a quick browse of the docs and don't see this anywhere.

JAndrassy mentioned this issue Jun 15, 2019

any known issues in connecting to wifi in 2.5.0? #5908

Closed

SteveRMann closed this as completed Jun 18, 2019

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Net connection broken in ESP8266WiFi library Version 2.5.0 or later #6138

Net connection broken in ESP8266WiFi library Version 2.5.0 or later #6138

SteveRMann commented May 24, 2019

philbowles commented Jun 3, 2019

SteveRMann commented Jun 3, 2019

manumdk commented Jun 3, 2019

d-a-v commented Jun 3, 2019

SteveRMann commented Jun 3, 2019 •

edited

Loading

cfarny commented Jun 5, 2019 •

edited

Loading

JAndrassy commented Jun 5, 2019 •

edited

Loading

SteveRMann commented Jun 5, 2019

JAndrassy commented Jun 5, 2019 •

edited

Loading

SteveRMann commented Jun 5, 2019

JAndrassy commented Jun 5, 2019

SteveRMann commented Jun 5, 2019

JAndrassy commented Jun 6, 2019

SteveRMann commented Jun 6, 2019

JAndrassy commented Jun 7, 2019

SteveRMann commented Jun 8, 2019

JAndrassy commented Jun 8, 2019 •

edited

Loading

SteveRMann commented Jun 8, 2019

JAndrassy commented Jun 8, 2019 •

edited

Loading

SteveRMann commented Jun 9, 2019

cfarny commented Jun 13, 2019

JAndrassy commented Jun 13, 2019 •

edited

Loading

cfarny commented Jun 13, 2019

danbates2 commented Jun 13, 2019

d-a-v commented Jun 17, 2019

SteveRMann commented Jun 18, 2019

Net connection broken in ESP8266WiFi library Version 2.5.0 or later #6138

Net connection broken in ESP8266WiFi library Version 2.5.0 or later #6138

Comments

SteveRMann commented May 24, 2019

Basic Infos

Platform

Settings in IDE

Problem Description

Debug Messages

philbowles commented Jun 3, 2019

SteveRMann commented Jun 3, 2019

manumdk commented Jun 3, 2019

d-a-v commented Jun 3, 2019

SteveRMann commented Jun 3, 2019 • edited Loading

cfarny commented Jun 5, 2019 • edited Loading

JAndrassy commented Jun 5, 2019 • edited Loading

SteveRMann commented Jun 5, 2019

JAndrassy commented Jun 5, 2019 • edited Loading

SteveRMann commented Jun 5, 2019

JAndrassy commented Jun 5, 2019

SteveRMann commented Jun 5, 2019

JAndrassy commented Jun 6, 2019

SteveRMann commented Jun 6, 2019

JAndrassy commented Jun 7, 2019

SteveRMann commented Jun 8, 2019

JAndrassy commented Jun 8, 2019 • edited Loading

SteveRMann commented Jun 8, 2019

JAndrassy commented Jun 8, 2019 • edited Loading

SteveRMann commented Jun 9, 2019

cfarny commented Jun 13, 2019

JAndrassy commented Jun 13, 2019 • edited Loading

cfarny commented Jun 13, 2019

danbates2 commented Jun 13, 2019

d-a-v commented Jun 17, 2019

SteveRMann commented Jun 18, 2019

SteveRMann commented Jun 3, 2019 •

edited

Loading

cfarny commented Jun 5, 2019 •

edited

Loading

JAndrassy commented Jun 5, 2019 •

edited

Loading

JAndrassy commented Jun 5, 2019 •

edited

Loading

JAndrassy commented Jun 8, 2019 •

edited

Loading

JAndrassy commented Jun 8, 2019 •

edited

Loading

JAndrassy commented Jun 13, 2019 •

edited

Loading