If you have recently got hands on brand new nodemcu microcontroller, then you must be thinking "Well how to connect this thing to wifi? 🤔", if it is then this blog is for you!

Source code

If you don't want to understand the whole source code and just get started, here is the source code.

#include <stdio.h>
#include <ESP8266WebServer.h>

#define HTTP_REST_PORT 80
#define WIFI_RETRY_DELAY 500
#define MAX_WIFI_INIT_RETRY 50

const char* wifi_ssid = "your_wifi_name";
const char* wifi_passwd = "wifi_pass";

ESP8266WebServer http_rest_server(HTTP_REST_PORT);


int init_wifi() {
  int retries = 0;
  Serial.println("Connecting to WiFi ...");

  WiFi.mode(WIFI_STA);
  WiFi.begin(wifi_ssid, wifi_passwd);
  // check the status of WiFi connection to be WL_CONNECTED
  while ((WiFi.status() != WL_CONNECTED) && (retries < MAX_WIFI_INIT_RETRY)) {
    retries++;
    delay(WIFI_RETRY_DELAY);
    Serial.print(".");
    // Dots will print to show still connecting...
  }
  return WiFi.status();  // return the WiFi connection status
}

void setup(void) {
  Serial.begin(9600);

  if (init_wifi() == WL_CONNECTED) {
    Serial.println("WIFI Connected");
    Serial.print(wifi_ssid);
    Serial.print("--- IP: ");
    Serial.println(WiFi.localIP());
  } else {
    Serial.print("Error connecting to: ");
    Serial.println(wifi_ssid);
  }

}

void loop(void) {
    // loop
}