Temperature, Humidity and Soil Moisture Sensor with Nodemcu

#include <WiFi.h>
#include <WiFiMulti.h>
#include <HTTPClient.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>

WiFiMulti WiFiMulti;
HTTPClient ask;

// user config: TODO
#define  MOISTURE_THRESHOLD     55   // moisture alert threshold

const char* ssid = "***";             // enter wifi user name 
const char* password = "***";         // enter wifi password
const char* apiKeyIn = "E5IiZ2835YBOgiiQwKjEErx7gaiaVIbw";      // Write your api key given from ask sensor
const unsigned int writeInterval = 25000; // write interval (in ms)

// ASKSENSORS config.
const char* host = "api.asksensors.com";  // ASKSENSORS API host name
const int httpPort = 80;      // port

// DHT config.
#define DHTPIN            4         ////d4 Pin which is connected to the DHT sensor.
// Uncomment the type of sensor in use:
#define DHTTYPE           DHT11     // DHT 11 
//#define DHTTYPE           DHT22     // DHT 22 (AM2302)
//#define DHTTYPE           DHT21     // DHT 21 (AM2301)
DHT_Unified dht(DHTPIN, DHTTYPE);
uint32_t delayMS;
int status = WL_IDLE_STATUS;
float myTemperature = 0, myHumidity = 0; 
int moisture_Pin= A0; // Soil Moisture Sensor input at Analog PIN vp
int moisture_value= 0, moisture_state = 0xFF;

// create ASKSENSORS client
// 
void setup() {
 // open serial
  Serial.begin(115200);

  Serial.println("Wait for WiFi... ");

  // connecting to the WiFi network
  WiFiMulti.addAP(ssid, password);
  while (WiFiMulti.run() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  // connected
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  
  // Initialize device.
  dht.begin();
  Serial.println("DHTxx Unified Sensor Example");
  // Print temperature sensor details.
  sensor_t sensor;
  dht.temperature().getSensor(&sensor);
  Serial.println("------------------------------------");
  Serial.println("Temperature");
  Serial.print  ("Sensor:       "); Serial.println(sensor.name);
  Serial.print  ("Driver Ver:   "); Serial.println(sensor.version);
  Serial.print  ("Unique ID:    "); Serial.println(sensor.sensor_id);
  Serial.print  ("Max Value:    "); Serial.print(sensor.max_value); Serial.println(" C");
  Serial.print  ("Min Value:    "); Serial.print(sensor.min_value); Serial.println(" C");
  Serial.print  ("Resolution:   "); Serial.print(sensor.resolution); Serial.println(" C");  
  Serial.println("------------------------------------");
  // Print humidity sensor details.
  dht.humidity().getSensor(&sensor);
  Serial.println("------------------------------------");
  Serial.println("Humidity");
  Serial.print  ("Sensor:       "); Serial.println(sensor.name);
  Serial.print  ("Driver Ver:   "); Serial.println(sensor.version);
  Serial.print  ("Unique ID:    "); Serial.println(sensor.sensor_id);
  Serial.print  ("Max Value:    "); Serial.print(sensor.max_value); Serial.println("%");
  Serial.print  ("Min Value:    "); Serial.print(sensor.min_value); Serial.println("%");
  Serial.print  ("Resolution:   "); Serial.print(sensor.resolution); Serial.println("%");  
  Serial.println("------------------------------------");
  // Set delay between sensor readings based on sensor details.
  delayMS = sensor.min_delay / 1000;
}

void loop() {
   
   Serial.println("            Temperature, Humidity and Soil Moisture sensors ");
        Serial.print("Moisture level : ");
    moisture_value= analogRead(moisture_Pin);
    moisture_value= moisture_value/10;
    Serial.println(moisture_value);
   if(moisture_value > MOISTURE_THRESHOLD) moisture_state = 0;
   else moisture_state = 1;
// Read data from DHT
// Delay between measurements.
  delay(delayMS);
  // Get temperature event and print its value.
  sensors_event_t event;  
  dht.temperature().getEvent(&event);
  if (isnan(event.temperature)) {
    Serial.println("Error reading temperature!");
  }
  else {
    // Update temperature and humidity
    myTemperature = (float)event.temperature;
    Serial.print("Temperature: ");
    Serial.print(myTemperature);
    Serial.println(" C");
  }
  // Get humidity event and print its value.
  dht.humidity().getEvent(&event);
  if (isnan(event.relative_humidity)) {
    Serial.println("Error reading humidity!");
  }
  else {
     myHumidity = (float)event.relative_humidity;
    Serial.print("Humidity: ");
    Serial.print(myHumidity);
    Serial.println("%");
  }
  
// Use WiFiClient class to create TCP connections
  WiFiClient client;


  if (!client.connect(host, httpPort)) {
    Serial.println("connection failed");
    return;
  }else {
    
    // Create a URL for the request
  String url = "https://api.asksensors.com/write/";
  url += apiKeyIn;
  url += "?module1=";
  url += myTemperature;
  url += "&module2=";
  url += myHumidity;
  url += "&module3=";
  url += moisture_value;
  url += "&module4=";
  url += moisture_state;
  
  Serial.print(" requesting URL: ");
  Serial.println(url);
  
   ask.begin(url); //Specify the URL
          Serial.println("Temperature, Humidity and Soil moisture data sent to Asksensors");

    //Check for the returning code
    int httpCode = ask.GET();          
 
    if (httpCode > 0) { 
 
        String payload = ask.getString();
        Serial.println(httpCode);
        Serial.println(payload);
      } else {
      Serial.println("Error on HTTP request");
    }
 
    ask.end(); //End 
    Serial.println(" End ");

  }

  client.stop();  // stop client
  
  delay(writeInterval);    // delay
}