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[GH-ISSUE #1271] Crash when calling autoConnect() from class method #1087

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opened 2026-02-28 01:28:28 +03:00 by kerem · 2 comments
kerem commented 2026-02-28 01:28:28 +03:00
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Originally created by @vcolella on GitHub (Jul 19, 2021).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1271

Basic Infos

Hardware

WiFimanager Branch/Release: Master

Esp8266:

Hardware: ESP-12e

Core Version: 2.5.2

Description

I'm trying to call autoConnect() inside a class method. It compiles just fine but for some reason that I don't understand it causes a crash. From what I understand last call in the stack was at ESP8266WiFiSTAClass::waitForConnectResult(), so I'm not even sure if the issue has to do with WiFiManager itself.

Am I doing something wrong ?

I tried to find a solution based on #381 but couldn't really get anywhere.

Settings in IDE

Module: NodeMCU 1.0 (ESP-12E Module)

Additional libraries: None

Sketch

#include <WiFiManager.h>

class Foo
{
public:
  Foo();
private:
  void fooMember();
};

Foo::Foo()
{
  fooMember();
}

void Foo::fooMember()
{
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  WiFiManager wm;
  wm.setDebugOutput(true);
  wm.autoConnect("myNetwork");
}

Foo myObject;

void setup() {
  //
}

void loop() {
  // put your main code here, to run repeatedly:
}

Debug Messages

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

load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
v8b899c12
~ld
*WM: [1] getCoreVersion():          2_5_2
*WM: [1] system_get_sdk_version():  2.2.1(cfd48f3)
*WM: [1] system_get_boot_version(): 5
*WM: [1] getFreeHeap():             50624
*WM: [1] AutoConnect 
*WM: [2] Connecting as wifi client... 
*WM: [3] STA static IP:
*WM: [2] setSTAConfig static ip not set, skipping 
*WM: [1] Connecting to SAVED AP: TEST 2.4GHz
*WM: [3] Using Password: 123456
*WM: [3] WiFi station enable 
*WM: [3] enableSTA PERSISTENT ON 
*WM: [1] connectTimeout not set, ESP waitForConnectResult... 

Soft WDT reset

Decoded Stack

0x402080f0: ESP8266WiFiSTAClass::waitForConnectResult() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 440
0x402080fe: ESP8266WiFiSTAClass::waitForConnectResult() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 442
0x40204274: WiFiManager::waitForConnectResult(unsigned short) at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 912
0x40207e80: ESP8266WiFiSTAClass::status() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 613
0x4020438d: WiFiManager::waitForConnectResult() at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 902
0x40204152: WiFiManager::wifiConnectDefault() at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 842
0x40201434: String::operator!=(char const*) const at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266/WString.h line 191
0x40205aa2: WiFiManager::connectWifi(String, String) at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 784
0x4020d0b8: String::String(char const*) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 36
0x40207e80: ESP8266WiFiSTAClass::status() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 613
0x4020cf20: String::~String() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 125
0x40206ec4: WiFiManager::autoConnect(char const*, char const*) at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 297
0x40205e16: WiFiManager::debugPlatformInfo() at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 2646
0x4020c7b0: HardwareSerial::begin(unsigned long, SerialConfig, SerialMode, unsigned char) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\HardwareSerial.cpp line 51
0x4020105c: Foo::fooMember() at C:\Users\VICTOR~1\AppData\Local\Temp\arduino_modified_sketch_878937/sketch_jul19a.ino line 22
0x40220100: etharp_query at core/ipv4/etharp.c line 934
0x40220100: etharp_query at core/ipv4/etharp.c line 934
0x40220301: etharp_output_LWIP2 at core/ipv4/etharp.c line 861
0x4020d01a: String::reserve(unsigned int) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 148
0x4020d078: String::copy(char const*, unsigned int) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 211
0x4020d0b8: String::String(char const*) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 36
0x4020d0b8: String::String(char const*) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 36
0x40207a24: ESP8266WiFiGenericClass::_eventCallback(void*) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiGeneric.cpp line 218
0x4020ce41: UpdaterClass::UpdaterClass() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\Updater.cpp line 45
0x4020107c: _GLOBAL__sub_I__ZN3FooC2Ev() at C:\Users\VICTOR~1\AppData\Local\Temp\arduino_modified_sketch_878937/sketch_jul19a.ino line 33
0x4020e151: init_done() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\core_esp8266_main.cpp line 149
0x4020d180: String::move(String&) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 238
0x4020d180: String::move(String&) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 238
0x4020d180: String::move(String&) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 238
0x4020a18c: ESP8266WebServer::responseCodeToString(int) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WebServer\src\ESP8266WebServer.cpp line 663
Originally created by @vcolella on GitHub (Jul 19, 2021). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1271 ### Basic Infos #### Hardware WiFimanager Branch/Release: Master Esp8266: Hardware: ESP-12e Core Version: 2.5.2 ### Description I'm trying to call ` autoConnect()` inside a class method. It compiles just fine but for some reason that I don't understand it causes a crash. From what I understand last call in the stack was at `ESP8266WiFiSTAClass::waitForConnectResult()`, so I'm not even sure if the issue has to do with WiFiManager itself. Am I doing something wrong ? I tried to find a solution based on #381 but couldn't really get anywhere. ### Settings in IDE Module: NodeMCU 1.0 (ESP-12E Module) Additional libraries: None ### Sketch ```cpp #include <WiFiManager.h> class Foo { public: Foo(); private: void fooMember(); }; Foo::Foo() { fooMember(); } void Foo::fooMember() { Serial.begin(115200); WiFi.mode(WIFI_STA); WiFiManager wm; wm.setDebugOutput(true); wm.autoConnect("myNetwork"); } Foo myObject; void setup() { // } void loop() { // put your main code here, to run repeatedly: } ``` ### Debug Messages ``` ets Jan 8 2013,rst cause:2, boot mode:(3,6) load 0x4010f000, len 1384, room 16 tail 8 chksum 0x2d csum 0x2d v8b899c12 ~ld *WM: [1] getCoreVersion(): 2_5_2 *WM: [1] system_get_sdk_version(): 2.2.1(cfd48f3) *WM: [1] system_get_boot_version(): 5 *WM: [1] getFreeHeap(): 50624 *WM: [1] AutoConnect *WM: [2] Connecting as wifi client... *WM: [3] STA static IP: *WM: [2] setSTAConfig static ip not set, skipping *WM: [1] Connecting to SAVED AP: TEST 2.4GHz *WM: [3] Using Password: 123456 *WM: [3] WiFi station enable *WM: [3] enableSTA PERSISTENT ON *WM: [1] connectTimeout not set, ESP waitForConnectResult... Soft WDT reset ``` ### Decoded Stack ``` 0x402080f0: ESP8266WiFiSTAClass::waitForConnectResult() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 440 0x402080fe: ESP8266WiFiSTAClass::waitForConnectResult() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 442 0x40204274: WiFiManager::waitForConnectResult(unsigned short) at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 912 0x40207e80: ESP8266WiFiSTAClass::status() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 613 0x4020438d: WiFiManager::waitForConnectResult() at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 902 0x40204152: WiFiManager::wifiConnectDefault() at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 842 0x40201434: String::operator!=(char const*) const at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266/WString.h line 191 0x40205aa2: WiFiManager::connectWifi(String, String) at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 784 0x4020d0b8: String::String(char const*) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 36 0x40207e80: ESP8266WiFiSTAClass::status() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 613 0x4020cf20: String::~String() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 125 0x40206ec4: WiFiManager::autoConnect(char const*, char const*) at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 297 0x40205e16: WiFiManager::debugPlatformInfo() at C:\Users\Victor Colella\Documents\Arduino\libraries\WiFiManager\WiFiManager.cpp line 2646 0x4020c7b0: HardwareSerial::begin(unsigned long, SerialConfig, SerialMode, unsigned char) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\HardwareSerial.cpp line 51 0x4020105c: Foo::fooMember() at C:\Users\VICTOR~1\AppData\Local\Temp\arduino_modified_sketch_878937/sketch_jul19a.ino line 22 0x40220100: etharp_query at core/ipv4/etharp.c line 934 0x40220100: etharp_query at core/ipv4/etharp.c line 934 0x40220301: etharp_output_LWIP2 at core/ipv4/etharp.c line 861 0x4020d01a: String::reserve(unsigned int) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 148 0x4020d078: String::copy(char const*, unsigned int) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 211 0x4020d0b8: String::String(char const*) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 36 0x4020d0b8: String::String(char const*) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 36 0x40207a24: ESP8266WiFiGenericClass::_eventCallback(void*) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WiFi\src\ESP8266WiFiGeneric.cpp line 218 0x4020ce41: UpdaterClass::UpdaterClass() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\Updater.cpp line 45 0x4020107c: _GLOBAL__sub_I__ZN3FooC2Ev() at C:\Users\VICTOR~1\AppData\Local\Temp\arduino_modified_sketch_878937/sketch_jul19a.ino line 33 0x4020e151: init_done() at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\core_esp8266_main.cpp line 149 0x4020d180: String::move(String&) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 238 0x4020d180: String::move(String&) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 238 0x4020d180: String::move(String&) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\cores\esp8266\WString.cpp line 238 0x4020a18c: ESP8266WebServer::responseCodeToString(int) at C:\Users\Victor Colella\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.5.2\libraries\ESP8266WebServer\src\ESP8266WebServer.cpp line 663 ```
kerem closed this issue 2026-02-28 01:28:28 +03:00
kerem commented 2026-02-28 01:28:28 +03:00
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@vcolella commented on GitHub (Jul 26, 2021):

I was able to reproduce the problem including only ESP8266WiFi, so I guess I'm closing the issue here.

<!-- gh-comment-id:886978203 --> @vcolella commented on GitHub (Jul 26, 2021): I was able to reproduce the problem including only `ESP8266WiFi`, so I guess I'm closing the issue here.
kerem commented 2026-02-28 01:28:28 +03:00
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@tablatronix commented on GitHub (Jul 29, 2021):

Almost looks like a wdt or a stuck loop.. strange

<!-- gh-comment-id:889509503 --> @tablatronix commented on GitHub (Jul 29, 2021): Almost looks like a wdt or a stuck loop.. strange
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