starred/WiFiManager

Fork 0

mirror of https://github.com/tzapu/WiFiManager.git synced 2026-04-27 09:05:56 +03:00

[GH-ISSUE #855] Saving custom parameters to EEPROM #719

New issue

Closed

opened 2026-02-28 01:26:44 +03:00 by kerem · 7 comments

kerem commented

2026-02-28 01:26:44 +03:00

Owner

Originally created by @megaESP on GitHub (Mar 21, 2019).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/855

First of all big thanks to Tzapu, Tablatronix and everyone else involved in this project. Kudos to you guys for your hard work, it is very much appreciated.

I was wondering if there is an example showing saving of custom parameters in EEPROM. I know it is one of the to do list, but in case you guys have something to share even half finished code, that will be helpful.

Thanks again
:-)

Originally created by @megaESP on GitHub (Mar 21, 2019). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/855 First of all big thanks to Tzapu, Tablatronix and everyone else involved in this project. Kudos to you guys for your hard work, it is very much appreciated. I was wondering if there is an example showing saving of custom parameters in EEPROM. I know it is one of the to do list, but in case you guys have something to share even half finished code, that will be helpful. Thanks again :-)

kerem closed this issue

2026-02-28 01:26:45 +03:00

kerem commented

2026-02-28 01:26:45 +03:00

Author

Owner

@Muhammed-Hayr-Ali commented on GitHub (Mar 22, 2019):

https://github.com/Muhammed-Hayr-Ali/wi-fi-Manager

@Muhammed-Hayr-Ali commented on GitHub (Mar 22, 2019): https://github.com/Muhammed-Hayr-Ali/wi-fi-Manager

kerem commented

2026-02-28 01:26:45 +03:00

Author

Owner

@megaESP commented on GitHub (Mar 26, 2019):

Thank you very much Muhammed! Inspired from your example I put together this following snippet. However, I am not getting into 'shouldSaveConfig' condition where EEPROM should be written. Can you please shed some light on it? I would really appreciate it. Thanks again

#include <Arduino.h>
#include <EEPROM.h>
#include <WiFiManager.h>

char getParam[200]="someText";

bool shouldSaveConfig = false;
void configModeCallback (WiFiManager *myWiFiManager) {
Serial.println("config mode");
}
void saveConfigCallback () {
Serial.println("Should save config now");
shouldSaveConfig = true;
}

void setup() {
Serial.begin(115200);
EEPROM.begin(512);
Serial.println(EEPROM.readString(0));

WiFiManager wm;
bool res;
wm.setSaveConfigCallback(saveConfigCallback);
WiFiManagerParameter customParam("idParam", "Enter Param here", getParam, 200);
wm.addParameter(&customParam);
wm.setAPCallback(configModeCallback);
res = wm.autoConnect("AutoConnectAP"); 

if(!res) {
    Serial.println("Failed to connect");
} 
else {
    Serial.println("connected...yeey :)");
    strcpy(getParam, customParam.getValue());
    if (shouldSaveConfig) {
    EEPROM.writeString(0, getParam);delay(100);
    Serial.println(EEPROM.readString(0));
    }
}

}

void loop() {
}

@megaESP commented on GitHub (Mar 26, 2019): Thank you very much Muhammed! Inspired from your example I put together this following snippet. However, I am not getting into 'shouldSaveConfig' condition where EEPROM should be written. Can you please shed some light on it? I would really appreciate it. Thanks again #include <Arduino.h> #include <EEPROM.h> #include <WiFiManager.h> char getParam[200]="someText"; bool shouldSaveConfig = false; void configModeCallback (WiFiManager *myWiFiManager) { Serial.println("config mode"); } void saveConfigCallback () { Serial.println("Should save config now"); shouldSaveConfig = true; } void setup() { Serial.begin(115200); EEPROM.begin(512); Serial.println(EEPROM.readString(0)); WiFiManager wm; bool res; wm.setSaveConfigCallback(saveConfigCallback); WiFiManagerParameter customParam("idParam", "Enter Param here", getParam, 200); wm.addParameter(&customParam); wm.setAPCallback(configModeCallback); res = wm.autoConnect("AutoConnectAP"); if(!res) { Serial.println("Failed to connect"); } else { Serial.println("connected...yeey :)"); strcpy(getParam, customParam.getValue()); if (shouldSaveConfig) { EEPROM.writeString(0, getParam);delay(100); Serial.println(EEPROM.readString(0)); } } } void loop() { }

kerem commented

2026-02-28 01:26:45 +03:00

Author

Owner

@Muhammed-Hayr-Ali commented on GitHub (Mar 27, 2019):

this is example for blynk auth parameter

#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>
#include <EEPROM.h>
#include <BlynkSimpleEsp8266.h>

WiFiManager wifiManager;

/****************************************************************/

//flag for saving data
bool shouldSaveConfig = false;

const unsigned long CONNECT_TIMEOUT = 10; // Wait 10 Seconds  to connect to the real AP before trying to boot the local AP
const unsigned long AP_TIMEOUT = 20; // Wait 20 Seconds in the config portal before trying again the original WiFi creds

//callback notifying us of the need to save config
void saveConfigCallback () {
  Serial.println("Should save config");
  shouldSaveConfig = true;
}

/********************** Begin EEPROM Section *****************/
#define EEPROM_SALT 12664
typedef struct
{
  int   salt = EEPROM_SALT;
  char blynk_token[33]  = "";
}

WMSettings;
WMSettings blynk;

void eeprom_read()
{
  EEPROM.begin(512);
  EEPROM.get(0, blynk);
  EEPROM.end();
}


void eeprom_saveconfig()
{
  EEPROM.begin(512);
  EEPROM.put(0, blynk);
  EEPROM.commit();
  EEPROM.end();
}

/*********************************************************************************/

void setup()
{
  Serial.begin(115200);



  /****************************************************************/

  eeprom_read();
  if (blynk.salt != EEPROM_SALT)
  {
    Serial.println("Invalid settings in EEPROM, trying with defaults");
    WMSettings defaults;
    blynk = defaults;
  }

  WiFiManagerParameter custom_blynk_token("blynk-token", "Blynk Token", blynk.blynk_token, 33);

  WiFiManager wifiManager;
  wifiManager.setSaveConfigCallback(saveConfigCallback);
  wifiManager.addParameter(&custom_blynk_token);

  //reset settings - for testing
  //wifiManager.resetSettings();
  //set minimu quality of signal so it ignores AP's under that quality
  //defaults to 8%
  wifiManager.setMinimumSignalQuality();
  //useful to make it all retry or go to sleep
  //in seconds
  wifiManager.setConnectTimeout(CONNECT_TIMEOUT);
  wifiManager.setTimeout(AP_TIMEOUT);

  //and goes into a blocking loop awaiting configuration
  if (!wifiManager.autoConnect(device.device_name)) {
    Serial.println("failed to connect and hit timeout");
    Serial.println("Reboot Your Device");
    delay(1000);
    ESP.restart();
  }

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

  strcpy(blynk.blynk_token, custom_blynk_token.getValue());

  eeprom_saveconfig();

  //end save

  Serial.println("local ip");
  Serial.println(WiFi.localIP());

  Blynk.config(blynk.blynk_token);
  bool result = Blynk.connect();

  if (result != true) {
    Serial.println("Failed To Connect BLYNK Server");
  } else {
    Serial.println("BLYNK Connected");
    Serial.println(blynk.blynk_token);
  }
}
void loop() {
  Blynk.run();
}

@Muhammed-Hayr-Ali commented on GitHub (Mar 27, 2019): this is example for blynk auth parameter ``` #define BLYNK_PRINT Serial #include <ESP8266WiFi.h> #include <DNSServer.h> #include <ESP8266WebServer.h> #include <WiFiManager.h> #include <EEPROM.h> #include <BlynkSimpleEsp8266.h> WiFiManager wifiManager; /****************************************************************/ //flag for saving data bool shouldSaveConfig = false; const unsigned long CONNECT_TIMEOUT = 10; // Wait 10 Seconds to connect to the real AP before trying to boot the local AP const unsigned long AP_TIMEOUT = 20; // Wait 20 Seconds in the config portal before trying again the original WiFi creds //callback notifying us of the need to save config void saveConfigCallback () { Serial.println("Should save config"); shouldSaveConfig = true; } /********************** Begin EEPROM Section *****************/ #define EEPROM_SALT 12664 typedef struct { int salt = EEPROM_SALT; char blynk_token[33] = ""; } WMSettings; WMSettings blynk; void eeprom_read() { EEPROM.begin(512); EEPROM.get(0, blynk); EEPROM.end(); } void eeprom_saveconfig() { EEPROM.begin(512); EEPROM.put(0, blynk); EEPROM.commit(); EEPROM.end(); } /*********************************************************************************/ void setup() { Serial.begin(115200); /****************************************************************/ eeprom_read(); if (blynk.salt != EEPROM_SALT) { Serial.println("Invalid settings in EEPROM, trying with defaults"); WMSettings defaults; blynk = defaults; } WiFiManagerParameter custom_blynk_token("blynk-token", "Blynk Token", blynk.blynk_token, 33); WiFiManager wifiManager; wifiManager.setSaveConfigCallback(saveConfigCallback); wifiManager.addParameter(&custom_blynk_token); //reset settings - for testing //wifiManager.resetSettings(); //set minimu quality of signal so it ignores AP's under that quality //defaults to 8% wifiManager.setMinimumSignalQuality(); //useful to make it all retry or go to sleep //in seconds wifiManager.setConnectTimeout(CONNECT_TIMEOUT); wifiManager.setTimeout(AP_TIMEOUT); //and goes into a blocking loop awaiting configuration if (!wifiManager.autoConnect(device.device_name)) { Serial.println("failed to connect and hit timeout"); Serial.println("Reboot Your Device"); delay(1000); ESP.restart(); } //if you get here you have connected to the WiFi Serial.println("connected...yeey :)"); strcpy(blynk.blynk_token, custom_blynk_token.getValue()); eeprom_saveconfig(); //end save Serial.println("local ip"); Serial.println(WiFi.localIP()); Blynk.config(blynk.blynk_token); bool result = Blynk.connect(); if (result != true) { Serial.println("Failed To Connect BLYNK Server"); } else { Serial.println("BLYNK Connected"); Serial.println(blynk.blynk_token); } } void loop() { Blynk.run(); } ```

kerem commented

2026-02-28 01:26:45 +03:00

Author

Owner

@megaESP commented on GitHub (Mar 29, 2019):

Thank you! Greatly appreciated
:-)

@megaESP commented on GitHub (Mar 29, 2019): Thank you! Greatly appreciated :-)

kerem commented

2026-02-28 01:26:45 +03:00

Author

Owner

@Anrikigai commented on GitHub (Oct 19, 2019):

Sorry, is it possible to configure also a blynk host?
I use my ow server, so Auth token is not enough...

@Anrikigai commented on GitHub (Oct 19, 2019): Sorry, is it possible to configure also a blynk host? I use my ow server, so Auth token is not enough...

kerem commented

2026-02-28 01:26:45 +03:00

Author

Owner

@lequangdau1993 commented on GitHub (Mar 29, 2020):

@Muhammed-Hayr-Ali GREAT CONTRIBUTION !!!

@lequangdau1993 commented on GitHub (Mar 29, 2020): @Muhammed-Hayr-Ali GREAT CONTRIBUTION !!!

kerem commented

2026-02-28 01:26:45 +03:00

Author

Owner

@SerhiiZhilin commented on GitHub (Aug 20, 2020):

this is example for blynk auth parameter

In this case eeprom_saveconfig(); is called each time after entering config no matter on shouldSaveConfig value?

@SerhiiZhilin commented on GitHub (Aug 20, 2020): > this is example for blynk auth parameter In this case eeprom_saveconfig(); is called each time after entering config no matter on shouldSaveConfig value?