[GH-ISSUE #214] Blynk.begin(auth) verses Blynk.begin(auth,ssid,pass) #177

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opened 2026-02-28 01:23:50 +03:00 by kerem · 2 comments

kerem commented

2026-02-28 01:23:50 +03:00

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Originally created by @captainchaosrules on GitHub (Aug 12, 2016).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/214

Trying to get code to work with Blynk
I get this error when using just Blynk.begin(auth)
aug12b_CONFIG_BLYNK_git:52: error: no matching function for call to 'BlynkWifi::begin(char [33])'
If I use this:
Blynk.begin(auth,ssid,pass)
how would I pass variables ssid and pass?

include <ESP8266WiFi.h> //https://github.com/esp8266/Arduino

//needed for library

include <DNSServer.h>

include <ESP8266WebServer.h>

include <WiFiManager.h> //https://github.com/tzapu/WiFiManager

include <BlynkSimpleEsp8266.h>

/////////////////////////
char auth[] = "13a164ce23a04f388328501154c4b60b";

// Your WiFi credentials.
// Set password to "" for open networks.

//char ssid[] = "test";
//char pass[] = "testest";

///////////////////////////

//for LED status

include <Ticker.h>

Ticker ticker;

void tick()
{
//toggle state
int state = digitalRead(BUILTIN_LED); // get the current state of GPIO1 pin
digitalWrite(BUILTIN_LED, !state); // set pin to the opposite state
}

//gets called when WiFiManager enters configuration mode
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());
//entered config mode, make led toggle faster
ticker.attach(0.2, tick);
}

void setup() {
// put your setup code here, to run once:

Serial.begin(115200);

//Blynk.begin(auth, ssid, pass);
Blynk.begin(auth);

//set led pin as output
pinMode(BUILTIN_LED, OUTPUT);
// start ticker with 0.5 because we start in AP mode and try to connect
ticker.attach(0.6, tick);

//WiFiManager
//Local intialization. Once its business is done, there is no need to keep it around
WiFiManager wifiManager;
//reset settings - for testing
//wifiManager.resetSettings();

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

//fetches ssid and pass and tries to connect
//if it does not connect it starts an access point with the specified name
//here "AutoConnectAP"
//and goes into a blocking loop awaiting configuration
if (!wifiManager.autoConnect()) {
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 :)");
ticker.detach();
//keep LED on
digitalWrite(BUILTIN_LED, HIGH);
}

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

//Blynk.begin(auth, ssid, pass);

//Blynk.begin(auth);
Blynk.run();
}

Originally created by @captainchaosrules on GitHub (Aug 12, 2016). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/214 Trying to get code to work with Blynk I get this error when using just Blynk.begin(auth) aug12b_CONFIG_BLYNK_git:52: error: no matching function for call to 'BlynkWifi::begin(char [33])' If I use this: Blynk.begin(auth,ssid,pass) how would I pass variables ssid and pass? # include <ESP8266WiFi.h> //https://github.com/esp8266/Arduino //needed for library # include <DNSServer.h> # include <ESP8266WebServer.h> # include <WiFiManager.h> //https://github.com/tzapu/WiFiManager # include <BlynkSimpleEsp8266.h> ///////////////////////// char auth[] = "13a164ce23a04f388328501154c4b60b"; // Your WiFi credentials. // Set password to "" for open networks. //char ssid[] = "test"; //char pass[] = "testest"; /////////////////////////// //for LED status # include <Ticker.h> Ticker ticker; void tick() { //toggle state int state = digitalRead(BUILTIN_LED); // get the current state of GPIO1 pin digitalWrite(BUILTIN_LED, !state); // set pin to the opposite state } //gets called when WiFiManager enters configuration mode 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()); //entered config mode, make led toggle faster ticker.attach(0.2, tick); } void setup() { // put your setup code here, to run once: Serial.begin(115200); //Blynk.begin(auth, ssid, pass); Blynk.begin(auth); //set led pin as output pinMode(BUILTIN_LED, OUTPUT); // start ticker with 0.5 because we start in AP mode and try to connect ticker.attach(0.6, tick); //WiFiManager //Local intialization. Once its business is done, there is no need to keep it around WiFiManager wifiManager; //reset settings - for testing //wifiManager.resetSettings(); //set callback that gets called when connecting to previous WiFi fails, and enters Access Point mode wifiManager.setAPCallback(configModeCallback); //fetches ssid and pass and tries to connect //if it does not connect it starts an access point with the specified name //here "AutoConnectAP" //and goes into a blocking loop awaiting configuration if (!wifiManager.autoConnect()) { 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 :)"); ticker.detach(); //keep LED on digitalWrite(BUILTIN_LED, HIGH); } void loop() { // put your main code here, to run repeatedly: //Blynk.begin(auth, ssid, pass); //Blynk.begin(auth); Blynk.run(); }

kerem closed this issue

2026-02-28 01:23:50 +03:00

kerem commented

2026-02-28 01:23:50 +03:00

Author

Owner

@captainchaosrules commented on GitHub (Aug 12, 2016):

This seemed to solve the issue...
Blynk.config(auth);

@captainchaosrules commented on GitHub (Aug 12, 2016): This seemed to solve the issue... Blynk.config(auth);

kerem commented

2026-02-28 01:23:50 +03:00

Author

Owner

@mridzkyf commented on GitHub (Sep 21, 2023):

This seemed to solve the issue... Blynk.config(auth);

Hi this method doesn't work on my project? I wonder if there is another way to blynk.begin without ssid and pass

@mridzkyf commented on GitHub (Sep 21, 2023): > This seemed to solve the issue... Blynk.config(auth); Hi this method doesn't work on my project? I wonder if there is another way to blynk.begin without ssid and pass