esp8266 weather station

gistfile1.txt

#include <ESP8266WiFi.h>
#include <TM1637Display.h>
#include <ESP8266HTTPClient.h>
#include <ESP8266WiFiMulti.h>
#include "DHTesp.h"

const char* ssid = "HUAWEI-E8372-26A6";//put your wifi ssid here
const char* password = "***";//put your wifi password here

const int CLK = D2; //Set the CLK pin connection to the display
const int DIO = D3; //Set the DIO pin connection to the display
TM1637Display display(CLK, DIO); //set up the 4-Digit Display.
WiFiClient client;
HTTPClient http;
ESP8266WiFiMulti WiFiMulti;
DHTesp dht;               

void setup_wifi() {
  delay(100);
  String thisBoard = ARDUINO_BOARD;
  Serial.println(thisBoard);
  // We start by connecting to a WiFi network
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  randomSeed(micros());
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void setup() {
  dht.setup(D5, DHTesp::DHT22);
  Serial.begin(115200);
  setup_wifi();
  display.setBrightness(0x0a); //set the diplay to maximum brightness
}

void loop() {
    // wait for WiFi connection
  if ((WiFiMulti.run() == WL_CONNECTED)) {
    delay(dht.getMinimumSamplingPeriod());
    float humidity = dht.getHumidity();
    float temperature = dht.getTemperature();
      Serial.println(temperature);
      Serial.println(humidity);

    Serial.print("[HTTP] begin...\n");
    if (http.begin(client, "http://api.thingspeak.com/update?api_key=***&field1="+String(temperature)+"&field3="+String(humidity))) {  // HTTP


      Serial.print("[HTTP] GET...\n");
      // start connection and send HTTP header
      int httpCode = http.GET();

      // httpCode will be negative on error
      if (httpCode > 0) {
        // HTTP header has been send and Server response header has been handled
        Serial.printf("[HTTP] GET... code: %d\n", httpCode);

        // file found at server
        if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
          String payload = http.getString();
          Serial.println(payload);
          display.showNumberDec(payload.toInt(),false,4,0);
        }
      } else {
        Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
      }

      http.end();
    } else {
      Serial.printf("[HTTP} Unable to connect\n");
    }
  }
  delay(10000);
}