Hello , I am trying to begin my wifi client in my setup () function.
void setup() {
//delay(5000);
// Setting up Serial communication
Serial.begin(115200);
WiFi.begin("name", "pass");
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
}
and everything works fine. BUT if i add a delay() before the wifi.begin nothing works. It keeps trying to connect to wifi like forever. Any ideas?
thank you 
Any ideas?
Yeah. Don't use delay().
Post ALL of your code. The problem may not be where YOU think it is.
"Dont use delay()" is not an option. I actually have some code instead of delay() where my android app is connecting to the arduino via bluetooth module.
the code is:
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <SoftwareSerial.h>
#define BUTTONPIN D3
#include <string.h>
#include <stdio.h>
SoftwareSerial mySerial(D1,D2);
String Data = "";
String password1 = "";
String ssid1 = "";
int button = 0; // 0 isrealeashed, 1 is pressed
char inChar;
int READINGSTATUS = -1;
char str[80] = "This is - www.tutorialspoint.com - website";
const char s[2] = ":";
char *token;
const char* ssid = "***";
const char* password = "**";
const char* host = "***.com";
const int httpsPort = 3245;
// Use web browser to view and copy
// SHA1 fingerprint of the certificate
const char* fingerprint = "CF 05 98 89 CA FF 8E D8 5E 5C E0 C2 E4 F7 E6 C3 C7 50 DD 5C";
void parseInput() {
int i=0;
int pos = 0;
if(Data[0] == '<' && Data[Data.length()] == '>' ) {
ζ}
}
for(i=0; i<Data.length(); i++) {
str[pos] = Data[i];
pos++;
}
token = strtok(str, s);
password1 = token;
while( token != NULL ) {
Serial.println(token );
token = strtok(NULL, s);
ssid1 = token;
break;
}
Serial.println("");
Serial.print("SSID: ");
Serial.println(ssid1);
Serial.print("PASSWORD: ");
Serial.println(password1);
Serial.println("Serial input was read sucesfully.");
}
void setup() {
// Setting up Serial communication
Serial.begin(115200);
mySerial.begin(9600);
// Setting up pins
pinMode(BUTTONPIN, INPUT);
// Blinking red -waiting to connect to a bluetooth device.
// ...
// Waiting to reveice data from bluetooth.
Serial.println(" Android device message:");
while(1) {
delay(100);
if (mySerial.available() > 0) {
char myc = mySerial.read();
Data.concat(myc);
Serial.print(myc);
Serial.print(" ");
if (myc == '>') {
break;
}
}
}
parseInput();
mySerial.write("Everything is ok");
//Serial.print("Android said: ");
//Serial.println(Data);
Serial.println("Connecting with: ");
Serial.println(password1);
Serial.println(ssid1);
char id[ssid1.length()+1];
ssid1.toCharArray(id, ssid1.length()+1);
//password.toCharArray(password1, );
// Connecting to WIFI hotspot
Serial.print("SSID: ");
Serial.println(id);
// Connecting to WIFI hotspot
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
// Use WiFiClientSecure class to create TLS connection
WiFiClientSecure client;
Serial.print("connecting to ");
Serial.println(host);
if (!client.connect(host, httpsPort)) {
Serial.println("connection failed");
return;
}
/*
if (client.verify(fingerprint, host)) {
Serial.println("certificate matches");
} else {
Serial.println("certificate doesn't match");
}
*/
String url = "/";
Serial.print("requesting URL: ");
Serial.println(url);
client.print(String("GET ") + url + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"User-Agent: BuildFailureDetectorESP8266\r\n" +
"Connection: close\r\n\r\n");
Serial.println("request sent");
while (client.connected()) {
String line = client.readStringUntil('\n');
if (line == "\r") {
Serial.println("headers received");
break;
}
}
String line = client.readStringUntil('\n');
if (line.startsWith("{\"state\":\"success\"")) {
Serial.println("esp8266/Arduino CI successfull!");
} else {
Serial.println("esp8266/Arduino CI has failed");
}
Serial.println("reply was:");
Serial.println("==========");
Serial.println(line);
Serial.println("==========");
Serial.println("closing connection");
}
void loop() {
int buttonState = digitalRead(BUTTONPIN);
if( buttonState == 1) {
Serial.println("Button is releashed!");
}else {
Serial.println("Button is pressed!");
}
if (mySerial.available() > 0) {
//Serial.println("---> Incoming byte!");
char myc = mySerial.read();
Serial.print(myc);
Serial.print(" ");
}
delay(50);
}
The while (1) loop in setup function is "the same" as if I had a delay(5000). If I comment that loop everything is ok.