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[GH-ISSUE #771] ESP32 reboot after Wifi is disconnected #644

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opened 2026-02-28 01:26:22 +03:00 by kerem · 12 comments
kerem commented 2026-02-28 01:26:22 +03:00
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Originally created by @bigdolphin on GitHub (Nov 24, 2018).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/771

After connected to a wifi, ESP32 reboots automatically if that wifi is disconnected.

Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC      : 0x400e58e4  PS      : 0x00060630  A0      : 0x800e59a4  A1      : 0x3ffb3210  
A2      : 0xbf5caed8  A3      : 0x3f402a9a  A4      : 0x00060620  A5      : 0x3ffb1c70  
A6      : 0x00000000  A7      : 0x3ffb26a0  A8      : 0x800e58e4  A9      : 0x3ffb3200  
A10     : 0x00000005  A11     : 0x3f402a9f  A12     : 0x000000ff  A13     : 0x0000ff00  
A14     : 0x00ff0000  A15     : 0xff000000  SAR     : 0x00000010  EXCCAUSE: 0x0000001c  
EXCVADDR: 0xbf5caed8  LBEG    : 0x400014fd  LEND    : 0x4000150d  LCOUNT  : 0xfffffffe  

Backtrace: 0x400e58e4:0x3ffb3210 0x400e59a1:0x3ffb3230 0x400d9065:0x3ffb3250 0x400d9271:0x3ffb3290 0x400d53da:0x3ffb32b0 0x400e0415:0x3ffb3300 0x400e0596:0x3ffb33f0 0x400e0629:0x3ffb34f0 0x400e045f:0x3ffb3510 0x400e04bd:0x3ffb3600

Rebooting...

The reason at line 2666 in WiFiManager.cpp
DEBUG_WM(DEBUG_VERBOSE,"[EVENT]",event);

Comment that line solves the issue.

Originally created by @bigdolphin on GitHub (Nov 24, 2018). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/771 After connected to a wifi, ESP32 reboots automatically if that wifi is disconnected. ``` Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled. Core 1 register dump: PC : 0x400e58e4 PS : 0x00060630 A0 : 0x800e59a4 A1 : 0x3ffb3210 A2 : 0xbf5caed8 A3 : 0x3f402a9a A4 : 0x00060620 A5 : 0x3ffb1c70 A6 : 0x00000000 A7 : 0x3ffb26a0 A8 : 0x800e58e4 A9 : 0x3ffb3200 A10 : 0x00000005 A11 : 0x3f402a9f A12 : 0x000000ff A13 : 0x0000ff00 A14 : 0x00ff0000 A15 : 0xff000000 SAR : 0x00000010 EXCCAUSE: 0x0000001c EXCVADDR: 0xbf5caed8 LBEG : 0x400014fd LEND : 0x4000150d LCOUNT : 0xfffffffe Backtrace: 0x400e58e4:0x3ffb3210 0x400e59a1:0x3ffb3230 0x400d9065:0x3ffb3250 0x400d9271:0x3ffb3290 0x400d53da:0x3ffb32b0 0x400e0415:0x3ffb3300 0x400e0596:0x3ffb33f0 0x400e0629:0x3ffb34f0 0x400e045f:0x3ffb3510 0x400e04bd:0x3ffb3600 Rebooting... ``` The reason at line 2666 in WiFiManager.cpp DEBUG_WM(DEBUG_VERBOSE,"[EVENT]",event); Comment that line solves the issue.
kerem 2026-02-28 01:26:22 +03:00
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Nov 24, 2018):

Thanks

<!-- gh-comment-id:441386431 --> @tablatronix commented on GitHub (Nov 24, 2018): Thanks
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Nov 24, 2018):

I cannot reproduce

Current time: Sat Nov 24 20:52:39 2018
[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 200 - BEACON_TIMEOUT
*WM: [2] [EVENT] 5
*WM: [2] [EVENT] WIFI_REASON: 200
[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND
*WM: [2] [EVENT] 5
*WM: [2] [EVENT] WIFI_REASON: 201
*WM: [2] [EVENT] WIFI_REASON: NO_AP_FOUND 
[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND
*WM: [2] [EVENT] 5
*WM: [2] [EVENT] WIFI_REASON: 201
*WM: [2] [EVENT] WIFI_REASON: NO_AP_FOUND 
[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND
*WM: [2] [EVENT] 5
*WM: [2] [EVENT] WIFI_REASON: 201
*WM: [2] [EVENT] WIFI_REASON: NO_AP_FOUND 
[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND
*WM: [2] [EVENT] 5
*WM: [2] [EVENT] WIFI_REASON: 201
*WM: [2] [EVENT] WIFI_REASON: NO_AP_FOUND
<!-- gh-comment-id:441394983 --> @tablatronix commented on GitHub (Nov 24, 2018): I cannot reproduce ``` Current time: Sat Nov 24 20:52:39 2018 [D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED [W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 200 - BEACON_TIMEOUT *WM: [2] [EVENT] 5 *WM: [2] [EVENT] WIFI_REASON: 200 [D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED [W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND *WM: [2] [EVENT] 5 *WM: [2] [EVENT] WIFI_REASON: 201 *WM: [2] [EVENT] WIFI_REASON: NO_AP_FOUND [D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED [W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND *WM: [2] [EVENT] 5 *WM: [2] [EVENT] WIFI_REASON: 201 *WM: [2] [EVENT] WIFI_REASON: NO_AP_FOUND [D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED [W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND *WM: [2] [EVENT] 5 *WM: [2] [EVENT] WIFI_REASON: 201 *WM: [2] [EVENT] WIFI_REASON: NO_AP_FOUND [D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED [W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND *WM: [2] [EVENT] 5 *WM: [2] [EVENT] WIFI_REASON: 201 *WM: [2] [EVENT] WIFI_REASON: NO_AP_FOUND ```
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Nov 24, 2018):

when was the last time you pulled in development?

<!-- gh-comment-id:441395021 --> @tablatronix commented on GitHub (Nov 24, 2018): when was the last time you pulled in development?
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Nov 24, 2018):

ok got it now different sketch

WM: [3] unloading 
[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 200 - BEACON_TIMEOUT
Guru Meditation Error: Core  1 panic'ed (InstrFetchProhibited). Exception was unhandled.
Core 1 register dump:
PC      : 0x00000000  PS      : 0x00060a30  A0      : 0x800dd348  A1      : 0x3ffb3370  
A2      : 0x3ffc4d44  A3      : 0x3f401bf3  A4      : 0x00060c20  A5      : 0x00000000  
A6      : 0x00000000  A7      : 0x00000000  A8      : 0x800dd295  A9      : 0x3ffb3360  
A10     : 0x3ffc4d44  A11     : 0x3f401bf3  A12     : 0x00000005  A13     : 0x0000ff00  
A14     : 0x00ff0000  A15     : 0xff000000  SAR     : 0x00000004  EXCCAUSE: 0x00000014  
EXCVADDR: 0x00000000  LBEG    : 0x400014fd  LEND    : 0x4000150d  LCOUNT  : 0xfffffffe  

Backtrace: 0x00000000:0x3ffb3370 0x400dd345:0x3ffb3390 0x400d72c9:0x3ffb33b0 0x400d74d5:0x3ffb33f0 0x400d376a:0x3ffb3410 0x400d2995:0x3ffb3460 0x400d2a29:0x3ffb3580

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:952
load:0x40078000,len:6084
load:0x40080000,len:7944
entry 0x40080310
*WM: [1] wifi 
*WM: [1] menuid found for  wifi
<!-- gh-comment-id:441395304 --> @tablatronix commented on GitHub (Nov 24, 2018): ok got it now different sketch ``` WM: [3] unloading [D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED [W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 200 - BEACON_TIMEOUT Guru Meditation Error: Core 1 panic'ed (InstrFetchProhibited). Exception was unhandled. Core 1 register dump: PC : 0x00000000 PS : 0x00060a30 A0 : 0x800dd348 A1 : 0x3ffb3370 A2 : 0x3ffc4d44 A3 : 0x3f401bf3 A4 : 0x00060c20 A5 : 0x00000000 A6 : 0x00000000 A7 : 0x00000000 A8 : 0x800dd295 A9 : 0x3ffb3360 A10 : 0x3ffc4d44 A11 : 0x3f401bf3 A12 : 0x00000005 A13 : 0x0000ff00 A14 : 0x00ff0000 A15 : 0xff000000 SAR : 0x00000004 EXCCAUSE: 0x00000014 EXCVADDR: 0x00000000 LBEG : 0x400014fd LEND : 0x4000150d LCOUNT : 0xfffffffe Backtrace: 0x00000000:0x3ffb3370 0x400dd345:0x3ffb3390 0x400d72c9:0x3ffb33b0 0x400d74d5:0x3ffb33f0 0x400d376a:0x3ffb3410 0x400d2995:0x3ffb3460 0x400d2a29:0x3ffb3580 Rebooting... ets Jun 8 2016 00:22:57 rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:2 load:0x3fff0018,len:4 load:0x3fff001c,len:952 load:0x40078000,len:6084 load:0x40080000,len:7944 entry 0x40080310 *WM: [1] wifi *WM: [1] menuid found for wifi ```
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Nov 24, 2018):

event is called after wm is out of scope, must removeevent in deconstructor

WiFi.removeEvent

I have to add a way to pass the cb since it is a std::bind cb, not sure how to remove it

<!-- gh-comment-id:441397274 --> @tablatronix commented on GitHub (Nov 24, 2018): event is called after wm is out of scope, must removeevent in deconstructor `WiFi.removeEvent` I have to add a way to pass the cb since it is a std::bind cb, not sure how to remove it
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Nov 25, 2018):

for now I am just checking a variable in scope, and bailing if its not true

<!-- gh-comment-id:441407891 --> @tablatronix commented on GitHub (Nov 25, 2018): for now I am just checking a variable in scope, and bailing if its not true
kerem commented 2026-02-28 01:26:23 +03:00
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@CarnageMarkus commented on GitHub (Nov 25, 2018):

Hi, I have the same problem - its rebooting right after finishing setup. I pulled straight away and checked, but it still reboots right after *WM: [3] unloading

<!-- gh-comment-id:441409660 --> @CarnageMarkus commented on GitHub (Nov 25, 2018): Hi, I have the same problem - its rebooting right after finishing `setup`. I pulled straight away and checked, but it still reboots right after `*WM: [3] unloading`
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Nov 25, 2018):

after setup as in saving ?
I did not check that, let me test
I am assuming you pulled the fix in ?

<!-- gh-comment-id:441410770 --> @tablatronix commented on GitHub (Nov 25, 2018): after setup as in saving ? I did not check that, let me test I am assuming you pulled the fix in ?
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Nov 25, 2018):

Can you enable debugging and se what events are being emitted because I am not able to reproduce

*WM: [2] restoring usermode STA
*WM: [2] wifi status: WL_CONNECTED
*WM: [2] wifi mode:[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 14 - AP_STOP
 STA
*WM: [1] config portal exiting 
connected...yeey :)
*WM: [3] unloading 
[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 200 - BEACON_TIMEOUT
[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED
[W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND

Also are you using esp32 staging ?

<!-- gh-comment-id:441412497 --> @tablatronix commented on GitHub (Nov 25, 2018): Can you enable debugging and se what events are being emitted because I am not able to reproduce ``` *WM: [2] restoring usermode STA *WM: [2] wifi status: WL_CONNECTED *WM: [2] wifi mode:[D][WiFiGeneric.cpp:345] _eventCallback(): Event: 14 - AP_STOP STA *WM: [1] config portal exiting connected...yeey :) *WM: [3] unloading [D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED [W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 200 - BEACON_TIMEOUT [D][WiFiGeneric.cpp:345] _eventCallback(): Event: 5 - STA_DISCONNECTED [W][WiFiGeneric.cpp:360] _eventCallback(): Reason: 201 - NO_AP_FOUND ``` Also are you using esp32 staging ?
kerem commented 2026-02-28 01:26:23 +03:00
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@bigdolphin commented on GitHub (Nov 25, 2018):

Thank you very much, after testing the new code, the issue is solved

for now I am just checking a variable in scope, and bailing if its not true

<!-- gh-comment-id:441430001 --> @bigdolphin commented on GitHub (Nov 25, 2018): Thank you very much, after testing the new code, the issue is solved > for now I am just checking a variable in scope, and bailing if its not true
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Feb 27, 2019):

This broke esp32 async scannetworks, as the event never fires for some reason.

<!-- gh-comment-id:467707896 --> @tablatronix commented on GitHub (Feb 27, 2019): This broke esp32 async scannetworks, as the event never fires for some reason.
kerem commented 2026-02-28 01:26:23 +03:00
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@tablatronix commented on GitHub (Feb 27, 2019):

I never set the darn variable to true!

<!-- gh-comment-id:467710679 --> @tablatronix commented on GitHub (Feb 27, 2019): I never set the darn variable to true!
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