Hardware code of Smart Irrigation System.

code.c

    #include "ESP8266WiFi.h"
    #include "ESP8266HTTPClient.h"
    #include "ArduinoJson.h"
    
    const int AnalogIn = A0;
    const int Motor_Pin = D1;
    const char* ssid = "JioFi3_1E8B14";
    const char* password = "9d1u40ntfbb";
    const char* host = "mohitkh7.pythonanywhere.com";
    
    int value = 0;
    int state;
    
    void setup() {
      
      Serial.begin(115200);
      delay(10); 
      pinMode(Motor_Pin,OUTPUT);                          
      Serial.println();
      Serial.println();
      Serial.print("Connecting to ");
      Serial.println(ssid);
      WiFi.begin(ssid, password);                //WiFi Connection
      while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
      }
      Serial.println("");
      Serial.println("WiFi connected");
      Serial.println("IP Address:");
      Serial.println(WiFi.localIP());
    }
    
    void loop() {
      delay(1000);
      value = 1024-(analogRead(AnalogIn));
      state = digitalRead(Motor_Pin);
      Serial.print("Connecting to ");
      Serial.println(host);
      WiFiClient client;       //WiFiClient to create TCP connections
      const int httpPort = 80;
      if (!client.connect(host, httpPort)) {
        Serial.println("Connection failed");
        return;
      }
    
      String url = "/api/create/";
      url += "?";
      url += "moisture";
      url += "=";
      url += value;
      url += "&";
      url += "status";
      url += "=";
      url += state;
    
      Serial.print("Requesting URL:");
      Serial.println(url);
      client.print(String("GET ") + url + " HTTP/1.1\r\n" + "Host:" + host + "\r\n" + "Connection: close\r\n\r\n");
      int timeout = millis() + 5000;
      while (client.available() == 0) {
        if (timeout - millis() < 0) {
          Serial.println(">>> Client Timeout !");
          client.stop();
        }
      }
    
      while (client.available()) {
        String line = client.readStringUntil('\r');
        Serial.print(line);
      }
      Serial.println();
      HTTPClient http;
      http.begin("http://mohitkh7.pythonanywhere.com/api/read/");
      int httpCode = http.GET();
    
      if (httpCode > 0) {                      // Get the request response payload
        String payload = http.getString();    //to do parsing
        Serial.println(payload);
        const size_t bufferSize = JSON_OBJECT_SIZE(1) + 20;
        DynamicJsonBuffer jsonBuffer(bufferSize);
        JsonObject& root = jsonBuffer.parseObject(payload);
        int set_state = root["set_state"];
        Serial.println(set_state);
        if (set_state == 1) {
          digitalWrite(Motor_Pin, HIGH);
          Serial.println("Motor turned ON");
        }
        else {
          digitalWrite(Motor_Pin, LOW);
          Serial.println("Motor turned OFF");
        }
      }
      http.end();
      Serial.println("Closing connection");
  delay(60000);
}










Ubidots Code:
#include "UbidotsESPMQTT.h"

int pin=D1;
int Sensor_Pin = A0;
int Sensor_Val;
int Motor_State;
int count;
char state;

#define TOKEN "A1E-ozFQrTzkWsmI3G4d8wxDWneYOD1tl2" // Your Ubidots TOKEN
#define WIFINAME "JioFi3_1E8B14" //Your SSID
#define WIFIPASS "9d1u40ntfbb" // Your Wifi Pass

Ubidots client(TOKEN);


void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i=0;i<length;i++) {
    Serial.print((char)payload[i]);
  }
  if (topic[25] == 's') {
    state = (char)payload[0];
  }
  else if (topic[25] == 't') {
    for (int i = 0; i < length; i++) {
      count = payload[i];
    }
    if (state == '1') {
      digitalWrite(pin, HIGH);
      Serial.println("Motor turned ON");
      delay(count * 100);
      digitalWrite(pin, LOW);
      Serial.println("Motor turned OFF");
      //t.pulse(LED_BUILTIN,count*1000,HIGH);
    }
    else {
      digitalWrite(pin, LOW);
      Serial.println("Motor turned OFF");
      delay(count * 1000);
      // t.pulse(LED_BUILTIN,count*1000,LOW);
    }
  }
  Serial.println();
}


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
 // client.setDebug(true); // Pass a true or false bool value to activate debug messages
  client.wifiConnection(WIFINAME, WIFIPASS);
  client.begin(callback);
  pinMode(pin, OUTPUT);
  client.ubidotsSubscribe("irrigation","switch"); //Insert the dataSource and Variable's Labels
  client.ubidotsSubscribe("irrigation","timer");
  }

  
  void loop() {
  // put your main code here, to run repeatedly:
  if(!client.connected()){
      client.reconnect();
      client.ubidotsSubscribe("irrigation","switch"); //Insert the dataSource and Variable's Labels
       client.ubidotsSubscribe("irrigation","timer");
      }

  Sensor_Val = analogRead(Sensor_Pin);
  Motor_State = digitalRead(pin);

  if (Sensor_Val >= 800) {
    digitalWrite(pin, HIGH);
    client.add("motor", Motor_State);
    client.ubidotsPublish("irrigation");
    //Serial.println("Motor turned ON");
  }
  else {
    digitalWrite(pin, LOW);
    client.add("motor", Motor_State);
    client.ubidotsPublish("irrigation");
    // Serial.println("Motor turned OFF");
  }
  client.add("moisture", Sensor_Val);
  client.ubidotsPublish("irrigation");
  client.loop();
  }