Esp8266 WiFi Weather

/*
 * Esp8266 WiFi Weather
 * Adapted from a sketch by Nick of Educ8s.tv
 *
 * 21 MAY 2017
 *
 * www.youtube.com/c/learnelectronics
 * [email protected]
 */

#include <ESP8266WiFi.h>                                    //wifi library
#include <Wire.h>                                           //I2C library
#include <Adafruit_SSD1306.h>                               //oled driver
#include <ArduinoJson.h>                                    //json library


Adafruit_SSD1306 display(LED_BUILTIN);                      //create instance of SSD1306 called display

const char* ssid     = "ATT6s3ENT4";                        // SSID of local network
const char* password = "69z5f2s4+e4p";                      // Password on network
String APIKEY = "cf3d2e98ed2b74c727655849c4d78bf0";         //openweathermap.org api key
String CityID = "5174095";                                  //my city id



WiFiClient client;                                          //start wifi client
char servername[]="api.openweathermap.org";                 //specify server name
String result;                                              //string var to hold result

int  counter = 60;                                          //counter var

String weatherDescription ="";                              //empty string to hold descrip
String weatherLocation = "";                                //empty string to hold location
String Country;                                             //dl'd var for country
float Temperature;                                          //dl'd var for temp
float Humidity;                                             //dl'd var for humidity
float Pressure;                                             //dl'd var for pressure


void setup() {
  Serial.begin(9600);                                       //start serial comms for debug
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);                //start the OLED @ Hex addy 0x3C
  display.display();                                        //show the Adafruit Logo
  delay(2);                                                 //for 2 milli seconds
  display.clearDisplay();                                   //clear display @ beginning of each loop
  display.setTextSize(1);                                   //set smallest text size
  display.setTextColor(WHITE);                              //set text color to WHITE
  display.setCursor(0,0);                                   //cursor to uper left
  display.print("   Connecting");                           //setup info
  Serial.println("Connecting");                             //setup info
  WiFi.begin(ssid, password);                               //connect to wifi


  display.display();                                        //show display
  delay(1000);                                              //wait
  display.clearDisplay();                                   //clear display
  display.print("Connected!");                              //show info
  Serial.println("Connected");                              //show info
  delay(1000);                                              //wait
  display.display();                                        //show display
  delay(1000);                                              //wait
  display.clearDisplay();                                   //clear display

}

void loop() {
    if(counter == 60)                                       //Get new data every 10 minutes
    {
      counter = 0;                                          //reset counter
      displayGettingData();                                 //callfunction
      delay(1000);                                          //wait
      getWeatherData();                                     //call function
    }else                                                   //otherwise
    {
      counter++;                                            //increment counter
      displayWeather(weatherLocation,weatherDescription);   //call function
      delay(5000);                                          //wait
      displayConditions(Temperature,Humidity,Pressure);     //callfunction
      delay(5000);                                          //wait
    }
}

void getWeatherData()                                       //client function to send/receive GET request data.
{
  if (client.connect(servername, 80)) {                     //starts client connection, checks for connection
    client.println("GET /data/2.5/weather?id="+CityID+"&units=metric&APPID="+APIKEY);
    client.println("Host: api.openweathermap.org");
    client.println("User-Agent: ArduinoWiFi/1.1");
    client.println("Connection: close");
    client.println();
  }
  else {
    Serial.println("connection failed");                    //error message if no client connect
    Serial.println();
  }

  while(client.connected() && !client.available()) delay(1); //waits for data
  while (client.connected() || client.available()) {         //connected or data available
    char c = client.read();                                  //gets byte from ethernet buffer
      result = result+c;
    }

  client.stop();                                             //stop client
  result.replace('[', ' ');
  result.replace(']', ' ');
  Serial.println(result);

char jsonArray [result.length()+1];
result.toCharArray(jsonArray,sizeof(jsonArray));
jsonArray[result.length() + 1] = '\0';

StaticJsonBuffer<1024> json_buf;
JsonObject &root = json_buf.parseObject(jsonArray);
if (!root.success())
{
  Serial.println("parseObject() failed");
}

String location = root["name"];
String country = root["sys"]["country"];
float temperature = root["main"]["temp"];
float humidity = root["main"]["humidity"];
String weather = root["weather"]["main"];
String description = root["weather"]["description"];
float pressure = root["main"]["pressure"];

weatherDescription = description;
weatherLocation = location;
Country = country;
Temperature = temperature;
Humidity = humidity;
Pressure = pressure;

}

void displayWeather(String location,String description)          //show location & weather function
{
  display.clearDisplay();
  display.setCursor(0,0);
  display.print(location);
  display.print(", ");
  display.println(Country);
  display.println(description);
  display.display();
  delay(2000);
}

void displayConditions(float Temperature,float Humidity, float Pressure) //show conditions function
{
  display.clearDisplay();
  display.setCursor(0,0);
  display.print("Temp     :");
 display.print(Temperature,1);
 //display.print((char)223);
 display.println("C ");

                                                                        //Printing Humidity
 display.print("Humidity :");
 display.print(Humidity,0);
 display.println(" %");

                                                                        //Printing Pressure
 display.print("Pressure :");
 display.print(Pressure,1);
 display.println(" hPa");
delay(5000);
display.display();
}

void displayGettingData()                                               //getting data display function
{
  display.clearDisplay();
  display.setCursor(0,0);
  display.print("Getting data");
  display.display();
  delay(1000);
}