ESP8622 connect to wlan with light feedback

esp8622_connect_to_wlan_with_light_feedback.ino

#include <Adafruit_NeoPixel.h>
#define PIN 5
int numPixels = 12;

#include <ESP8266WiFi.h>

const char* ssid="<YOUR WLAN SSID";
const char* password="<YOUR WLAN PASSWORD>";

Adafruit_NeoPixel strip = Adafruit_NeoPixel(numPixels, PIN, NEO_GRB + NEO_KHZ800);

uint32_t blue = strip.Color(0, 0, 255);
uint32_t green = strip.Color(0, 255, 0);

int counter = 0;

void setup() {
  strip.begin();
  strip.setBrightness(15); 
  strip.show();

  Serial.begin(115200);
  Serial.println();
  Serial.print("Wifi connection to ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  Serial.println();
  Serial.print("Connecting");

  while(WiFi.status() != WL_CONNECTED ) {
        strip.clear(); // Set all pixel colors to 'off'
        strip.setPixelColor(counter, blue);
        strip.show();
        delay(1000);
        // increment counter
        counter++;
        // counter should only have values from 0-11
        counter = counter % 12; 
  }
  
  Serial.println("WiFi connected!");
  Serial.print("ESP IP Address:");
  Serial.println(WiFi.localIP());
  
  // Set all leds to green
  for(uint16_t i=0; i<strip.numPixels(); i++) { 
    strip.setPixelColor(i, green); 
    strip.show();
  }
}

void loop() { }