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[GH-ISSUE #1084] Issue with AutoConnect on failed connection #925

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opened 2026-02-28 01:27:42 +03:00 by kerem · 9 comments

kerem commented

2026-02-28 01:27:42 +03:00

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Originally created by @ArsineMan on GitHub (Jun 23, 2020).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1084

Basic Infos

Hardware

WiFimanager Branch/Release:

Master
Development

Esp8266/Esp32:

ESP8266
ESP32

Hardware: ESP-12e, esp01, esp25

ESP01
ESP12 E/F/S (nodemcu, wemos, feather)
Other

ESP Core Version: 2.4.0, staging

2.3.0
2.4.0
staging (master/dev)

Description

Problem description
when autoConnect fails to connect to router (because I put a phony SSID/Password to force the connection to fail) I am immediately directed to AP/Configuration mode. How does the code below reach the Serial.println("Failed to connect and hit timout"); line? I am hoping that if my connection isn't established I will enter sleep mode and try again later. My only other thought is to use the configModeCallback to enter sleep mode and try again?

  response = wifiManager.autoConnect("WifiMgr","Password");
  if(!response) {
    Serial.println("failed to connect and hit timeout");
    //reset and try again, or maybe put it to deep sleep
    ESP.reset();
    delay(1000);
  } ## Settings in IDE

Module: NodeMcu, Wemos D1

Additional libraries:

Sketch

#include <ESP8266WiFi.h>          

//needed for library
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include "WiFiManager.h"          //https://github.com/tzapu/WiFiManager

void configModeCallback (WiFiManager *myWiFiManager) {
  Serial.println("Entered config mode");
  Serial.println(WiFi.softAPIP());
  //if you used auto generated SSID, print it
  Serial.println(myWiFiManager->getConfigPortalSSID());
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  WiFiManager wifiManager;

//set callback that gets called when connecting to previous WiFi fails, and enters Access Point mode
  wifiManager.setAPCallback(configModeCallback);
//wifiManager.setConnectTimeout(10);

  bool response;
  response = wifiManager.autoConnect("WifiMgr","Password");
  if(!response) {
    Serial.println("failed to connect and hit timeout");
    //reset and try again, or maybe put it to deep sleep
    ESP.reset();
    delay(1000);
  } 

  //if you get here you have connected to the WiFi
  Serial.println("connected...yeey :)");
 
}

void loop() {

}

Debug Messages

*WM: Status:
*WM: 6
*WM: Using last saved values, should be faster
*WM: Connection result:
*WM: 1
Entered config mode
192.168.4.1
WifiMgr
*WM:
*WM: Configuring access point...
*WM: WifiMgr
*WM: Password
*WM: AP IP address:
*WM: 192.168.4.1
*WM: HTTP server started

Originally created by @ArsineMan on GitHub (Jun 23, 2020). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1084 ### Basic Infos #### Hardware **WiFimanager Branch/Release:** - [x] Master - [ ] Development **Esp8266/Esp32:** - [x] ESP8266 - [ ] ESP32 **Hardware: ESP-12e, esp01, esp25** - [ ] ESP01 - [x] ESP12 E/F/S (nodemcu, wemos, feather) - [ ] Other **ESP Core Version: 2.4.0, staging** - [ ] 2.3.0 - [x] 2.4.0 - [ ] staging (master/dev) ### Description Problem description when autoConnect fails to connect to router (because I put a phony SSID/Password to force the connection to fail) I am immediately directed to AP/Configuration mode. How does the code below reach the Serial.println("Failed to connect and hit timout"); line? I am hoping that if my connection isn't established I will enter sleep mode and try again later. My only other thought is to use the configModeCallback to enter sleep mode and try again? ``` response = wifiManager.autoConnect("WifiMgr","Password"); if(!response) { Serial.println("failed to connect and hit timeout"); //reset and try again, or maybe put it to deep sleep ESP.reset(); delay(1000); } ## Settings in IDE ``` Module: NodeMcu, Wemos D1 Additional libraries: ### Sketch ``` #include <ESP8266WiFi.h> //needed for library #include <DNSServer.h> #include <ESP8266WebServer.h> #include "WiFiManager.h" //https://github.com/tzapu/WiFiManager void configModeCallback (WiFiManager *myWiFiManager) { Serial.println("Entered config mode"); Serial.println(WiFi.softAPIP()); //if you used auto generated SSID, print it Serial.println(myWiFiManager->getConfigPortalSSID()); } void setup() { // put your setup code here, to run once: Serial.begin(115200); WiFiManager wifiManager; //set callback that gets called when connecting to previous WiFi fails, and enters Access Point mode wifiManager.setAPCallback(configModeCallback); //wifiManager.setConnectTimeout(10); bool response; response = wifiManager.autoConnect("WifiMgr","Password"); if(!response) { Serial.println("failed to connect and hit timeout"); //reset and try again, or maybe put it to deep sleep ESP.reset(); delay(1000); } //if you get here you have connected to the WiFi Serial.println("connected...yeey :)"); } void loop() { } ``` ### Debug Messages ``` *WM: Status: *WM: 6 *WM: Using last saved values, should be faster *WM: Connection result: *WM: 1 Entered config mode 192.168.4.1 WifiMgr *WM: *WM: Configuring access point... *WM: WifiMgr *WM: Password *WM: AP IP address: *WM: 192.168.4.1 *WM: HTTP server started ```

kerem closed this issue

2026-02-28 01:27:42 +03:00

kerem commented

2026-02-28 01:27:43 +03:00

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@tablatronix commented on GitHub (Jun 23, 2020):

If you do not want to start the configportal why are you even using wifimanager?

@tablatronix commented on GitHub (Jun 23, 2020): If you do not want to start the configportal why are you even using wifimanager?

kerem commented

2026-02-28 01:27:43 +03:00

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Owner

@ArsineMan commented on GitHub (Jun 23, 2020):

I definitely want to start the ConfigPortal when SSID/Password have yet to be established, I just don't want my battery powered project to remain in configmode (and turned on) if the wifi connection cannot be established. Ie. if my home accesspoint is down my device will remain on and in ConfigPortal mode.

@ArsineMan commented on GitHub (Jun 23, 2020): I definitely want to start the ConfigPortal when SSID/Password have yet to be established, I just don't want my battery powered project to remain in configmode (and turned on) if the wifi connection cannot be established. Ie. if my home accesspoint is down my device will remain on and in ConfigPortal mode.

kerem commented

2026-02-28 01:27:43 +03:00

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Owner

@tablatronix commented on GitHub (Jun 24, 2020):

if it is battery powered, then only use WM when there is no previous saved ssid or use a button for ondemand mode.

@tablatronix commented on GitHub (Jun 24, 2020): if it is battery powered, then only use WM when there is no previous saved ssid or use a button for ondemand mode.

kerem commented

2026-02-28 01:27:43 +03:00

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Owner

@tablatronix commented on GitHub (Jun 24, 2020):

It might be a pain to do this in v0, but v2 you can use

    // check if the module has a saved ap to connect to
    bool          getWiFiIsSaved();

@tablatronix commented on GitHub (Jun 24, 2020): It might be a pain to do this in v0, but v2 you can use ```C++ // check if the module has a saved ap to connect to bool getWiFiIsSaved(); ```

kerem commented

2026-02-28 01:27:43 +03:00

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Owner

@ArsineMan commented on GitHub (Jun 24, 2020):

Thanks for the response. Yes I went the route of managing the wifi client mode separate from WM and utilized the startConfigPortal method to utilize your portal and manage ssid's. I didn't realize the ESP8266wifi class stored previous connection SSID/psk so I was looking all over the damn place for where you were storing it. Makes my life easier after rtfm. I appreciate your time on this library it will save me hours.

@ArsineMan commented on GitHub (Jun 24, 2020): Thanks for the response. Yes I went the route of managing the wifi client mode separate from WM and utilized the startConfigPortal method to utilize your portal and manage ssid's. I didn't realize the ESP8266wifi class stored previous connection SSID/psk so I was looking all over the damn place for where you were storing it. Makes my life easier after rtfm. I appreciate your time on this library it will save me hours.

kerem commented

2026-02-28 01:27:43 +03:00

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Owner

@tablatronix commented on GitHub (Jun 24, 2020):

Yeah you might be able to just check WiFi.SSID() == "" or null, but not sure how reliable that is, in the alpha version I actually check the wifi config from memory.

@tablatronix commented on GitHub (Jun 24, 2020): Yeah you might be able to just check WiFi.SSID() == "" or null, but not sure how reliable that is, in the alpha version I actually check the wifi config from memory.

kerem commented

2026-02-28 01:27:43 +03:00

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Owner

@tablatronix commented on GitHub (Jun 24, 2020):

https://github.com/tzapu/WiFiManager/blob/development/WiFiManager.cpp#L2873-L2902

@tablatronix commented on GitHub (Jun 24, 2020): https://github.com/tzapu/WiFiManager/blob/development/WiFiManager.cpp#L2873-L2902

kerem commented

2026-02-28 01:27:43 +03:00

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Owner

@ArsineMan commented on GitHub (Jun 24, 2020):

Looks good. I assume i'm ok with WiFi.SSID given their code:


String ESP8266WiFiSTAClass::SSID() const {
    struct station_config conf;
    wifi_station_get_config(&conf);
    char tmp[33]; //ssid can be up to 32chars, => plus null term
    memcpy(tmp, conf.ssid, sizeof(conf.ssid));
    tmp[32] = 0; //nullterm in case of 32 char ssid
    return String(reinterpret_cast<char*>(tmp));
}

/**
 * Return the current pre shared key associated with the network
 * @return  psk string
 */
String ESP8266WiFiSTAClass::psk() const {
    struct station_config conf;
    wifi_station_get_config(&conf);
    char tmp[65]; //psk is 64 bytes hex => plus null term
    memcpy(tmp, conf.password, sizeof(conf.password));
    tmp[64] = 0; //null term in case of 64 byte psk
    return String(reinterpret_cast<char*>(tmp));
}

@ArsineMan commented on GitHub (Jun 24, 2020): Looks good. I assume i'm ok with WiFi.SSID given their code: ```cpp String ESP8266WiFiSTAClass::SSID() const { struct station_config conf; wifi_station_get_config(&conf); char tmp[33]; //ssid can be up to 32chars, => plus null term memcpy(tmp, conf.ssid, sizeof(conf.ssid)); tmp[32] = 0; //nullterm in case of 32 char ssid return String(reinterpret_cast<char*>(tmp)); } /** * Return the current pre shared key associated with the network * @return psk string */ String ESP8266WiFiSTAClass::psk() const { struct station_config conf; wifi_station_get_config(&conf); char tmp[65]; //psk is 64 bytes hex => plus null term memcpy(tmp, conf.password, sizeof(conf.password)); tmp[64] = 0; //null term in case of 64 byte psk return String(reinterpret_cast<char*>(tmp)); } ```

kerem commented

2026-02-28 01:27:43 +03:00

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@tablatronix commented on GitHub (Jun 24, 2020):

Oh yeah I forgot I only did that so I could pick persistent or not. So that should work fine.

I need to add an example for this.

I do remember having to check null or "" I think, so check that.

@tablatronix commented on GitHub (Jun 24, 2020): Oh yeah I forgot I only did that so I could pick persistent or not. So that should work fine. I need to add an example for this. I do remember having to check null or "" I think, so check that.