Current Weather with NodeMCU & openweathermap

WeatherForecast

/*
  Rui Santos
  Complete project details at Complete project details at https://RandomNerdTutorials.com/esp8266-nodemcu-http-get-open-weather-map-thingspeak-arduino/

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files.

  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.
*/

#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <WiFiClient.h>
#include <Arduino_JSON.h>

int RossoLed = 16;  
int GialloLed = 5; 
int BluLed = 12;  
int VerdeLed = 14;  
String serverPath;

int weathercode;
int len;

int Rosso [] = {202, 211, 212, 503, 504, 602, 781};
int RossoGiallo [] = {201, 221, 232, 502, 522, 601, 622};
int Giallo [] = {200, 210, 230, 231, 302, 312, 313, 314, 321, 501, 511, 520, 521, 531, 600, 611, 612, 613, 615, 616, 620, 621, 771};
int GialloVerde [] = {301, 310, 311, 500};
int Verde [] = {300, 701, 711, 721, 731, 741, 751, 761, 762, 803, 804};
int VerdeBlu [] = {802};
int Blu [] = {800, 801};


const char* ssid = "FRITZ!Box 7590 DJ";
const char* password = "0075914042";

// Your Domain name with URL path or IP address with path
String openWeatherMapApiKey = "0074439922dd26b4e08256e394f2ae4f";
// Example:
//String openWeatherMapApiKey = "bd939aa3d23ff33d3c8f5dd1dd4";

// Replace with your country code and city
String city = "Como";
String countryCode = "IT";

// THE DEFAULT TIMER IS SET TO 10 SECONDS FOR TESTING PURPOSES
// For a final application, check the API call limits per hour/minute to avoid getting blocked/banned
unsigned long lastTime = 0;
// Timer set to 10 minutes (600000)
//unsigned long timerDelay = 600000;
// Set timer to 10 seconds (10000)
unsigned long timerDelay = 100000;

String jsonBuffer;


void setup() {

  pinMode(RossoLed, OUTPUT);
  pinMode(GialloLed, OUTPUT);
  pinMode(VerdeLed, OUTPUT);
  pinMode(BluLed, OUTPUT);  
  digitalWrite(RossoLed, LOW);
  digitalWrite(GialloLed, LOW);
  digitalWrite(VerdeLed, LOW);
  digitalWrite(BluLed, LOW);
//  Serial.begin(115200);

  WiFi.begin(ssid, password);
//  Serial.println("Connecting");
  while(WiFi.status() != WL_CONNECTED) {
    delay(500);
//    Serial.print(".");
  }
//  Serial.println("");
//  Serial.print("Connected to WiFi network with IP Address: ");
//  Serial.println(WiFi.localIP());
 
//  Serial.println("Timer set to 10 minutes (timerDelay variable), it will take 10 minutes before publishing the first reading.");
}

void loop() {
  // Send an HTTP GET request
  if ((millis() - lastTime) > timerDelay) {
    // Check WiFi connection status
    if(WiFi.status()== WL_CONNECTED){
      String serverPath = "http://api.openweathermap.org/data/2.5/weather?q=" + city + "," + countryCode + "&APPID=" + openWeatherMapApiKey;
      
      jsonBuffer = httpGETRequest(serverPath.c_str());
//      Serial.println(jsonBuffer);
      JSONVar myObject = JSON.parse(jsonBuffer);
  
      // JSON.typeof(jsonVar) can be used to get the type of the var
      if (JSON.typeof(myObject) == "undefined") {
//        Serial.println("Parsing input failed!");
        digitalWrite(RossoLed, HIGH);
        digitalWrite(GialloLed, HIGH);
        digitalWrite(VerdeLed, HIGH);
        digitalWrite(BluLed, HIGH);
        return;
      }
/*    
      Serial.print("JSON object = ");
      Serial.println(myObject);
      Serial.print("Temperature: ");
      Serial.println(myObject["main"]["temp"]);
      Serial.print("Pressure: ");
      Serial.println(myObject["main"]["pressure"]);
      Serial.print("Humidity: ");
      Serial.println(myObject["main"]["humidity"]);
      Serial.print("Wind Speed: ");
      Serial.println(myObject["wind"]["speed"]);
      Serial.print("Main: ");
      Serial.println(myObject["weather"][0]["main"]);          
      Serial.print("Description: ");
      Serial.println(myObject["weather"][0]["description"]);    
  */
      
      weathercode = (myObject["weather"][0]["id"]);
//      Serial.println(weathercode);

    len = sizeof(Rosso)/sizeof(Rosso[0]);
    for (int i=0; i<len; i++) {
      if (weathercode == Rosso[i]) {
//        Serial.println("Rosso");
        digitalWrite(RossoLed, HIGH);
        digitalWrite(GialloLed, LOW);
        digitalWrite(VerdeLed, LOW);
        digitalWrite(BluLed, LOW);
      }
    }

    len = sizeof(RossoGiallo)/sizeof(RossoGiallo[0]);
    for (int i=0; i<len; i++) {
      if (weathercode == RossoGiallo[i]) {
//        Serial.println("RossoGiallo");
        digitalWrite(RossoLed, HIGH);
        digitalWrite(GialloLed, HIGH);
        digitalWrite(VerdeLed, LOW);
        digitalWrite(BluLed, LOW);
      }
    }

    len = sizeof(Giallo)/sizeof(Giallo[0]);
    for (int i=0; i<len; i++) {
      if (weathercode == Giallo[i]) {
//        Serial.println("Giallo");
        digitalWrite(RossoLed, LOW);
        digitalWrite(GialloLed, HIGH);
        digitalWrite(VerdeLed, LOW);
        digitalWrite(BluLed, LOW);
      }
    }

    len = sizeof(GialloVerde)/sizeof(GialloVerde[0]);
    for (int i=0; i<len; i++) {
      if (weathercode == GialloVerde[i]) {
//        Serial.println("GialloVerde");
        digitalWrite(RossoLed, LOW);
        digitalWrite(GialloLed, HIGH);
        digitalWrite(VerdeLed, HIGH);
        digitalWrite(BluLed, LOW);
      }
    }

    len = sizeof(Verde)/sizeof(Verde[0]);
    for (int i=0; i<len; i++) {
      if (weathercode == Verde[i]) {
//        Serial.println("Verde");
        digitalWrite(RossoLed, LOW);
        digitalWrite(GialloLed, LOW);
        digitalWrite(VerdeLed, HIGH);
        digitalWrite(BluLed, LOW);
      }
    }

    len = sizeof(VerdeBlu)/sizeof(VerdeBlu[0]);
    for (int i=0; i<len; i++) {
      if (weathercode == VerdeBlu[i]) {
//        Serial.println("VerdeBlu");
        digitalWrite(RossoLed, LOW);
        digitalWrite(GialloLed, LOW);
        digitalWrite(VerdeLed, HIGH);
        digitalWrite(BluLed, HIGH);
      }
    }
        
    len = sizeof(Blu)/sizeof(Blu[0]);
    for (int i=0; i<len; i++) {
      if (weathercode == Blu[i]) {
//        Serial.println("Blu");
        digitalWrite(RossoLed, LOW);
        digitalWrite(GialloLed, LOW);
        digitalWrite(VerdeLed, LOW);
        digitalWrite(BluLed, HIGH);
      }
    }
       
    }
    else {
//      Serial.println("WiFi Disconnected");
        digitalWrite(RossoLed, HIGH);
        digitalWrite(GialloLed, HIGH);
        digitalWrite(BluLed, HIGH);
        digitalWrite(VerdeLed, HIGH);
    }

    lastTime = millis();
  }
}


String httpGETRequest(const char* serverName) {
  HTTPClient http;
    
  // Your IP address with path or Domain name with URL path 
  http.begin(serverName);
  
  // Send HTTP POST request
  int httpResponseCode = http.GET();
  
  String payload = "{}"; 
  
  if (httpResponseCode>0) {
//    Serial.print("HTTP Response code: ");
//    Serial.println(httpResponseCode);
    payload = http.getString();
  }
  else {
//    Serial.print("Error code: ");
//    Serial.println(httpResponseCode);
  }
  // Free resources
  http.end();

  return payload;
}