IoT_tilt_sensor.c

#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#include <stdio.h>
#include <stdlib.h>

#define DHTTYPE DHT11   // DHT 11
#define TILT_SENSOR_PIN 10  // SD3
#define TILT_LED_PIN 16     // D6

int value = 0;
const char* ssid = "Furkan";
const char* password = "furkankurt";
const char* mqtt_server = "192.168.137.107";

WiFiClient espClient;
PubSubClient client(espClient);

const int DHTPin = D1;
const int lamp = LED_BUILTIN;

DHT dht(DHTPin, DHTTYPE);

long now = millis();
long lastMeasure = 0;

void setup_wifi() {
  delay(10);
  Serial.println();
  Serial.print("Connecting ?!: ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("WiFi connected - ESP IP adres: ");
  Serial.println(WiFi.localIP());
}
void callback(String topic, byte* message, unsigned int length) {
  Serial.print(topic);
  String messageTemp;
  
  for (int i = 0; i < length; i++) {
    Serial.print((char)message[i]);
    messageTemp += (char)message[i];
  }/*
  Serial.println();
if(topic=="home/1/lamp"){
      Serial.print("Odadaki lampanın durumu: ");
      if(messageTemp == "on"){
        digitalWrite(lamp, HIGH);
        Serial.print("On");
      }
      else if(messageTemp == "off"){
        digitalWrite(lamp, LOW);
        Serial.print("Off");
      }
  }*/
  Serial.println();
}

void reconnect() {
  while (!client.connected()) {
    Serial.print("MQTT connecting...");
    // bağlanmamyı dene
    if (client.connect("ESP8266Client","furkan","furkan")) {
      Serial.println("MQTT connected");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" trying in 5 sec");
      delay(5000);
    }
  }
}

void setup() {
    pinMode(10, INPUT);     // SD3
    pinMode(16, OUTPUT);    // D6
    pinMode(LED_BUILTIN, OUTPUT);
    Serial.begin(115200);setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
}

void loop() {
  Serial.print("Value: ");
  Serial.println(analogRead(TILT_SENSOR_PIN));
  if(value != analogRead(TILT_SENSOR_PIN)){
    digitalWrite(16, HIGH);
  } else {
    digitalWrite(16, LOW);
  }
  
if (!client.connected()) {
    reconnect();
  }
  if(!client.loop())
    client.connect("ESP8266Client","furkan","furkan");
  now = millis();
  if (now - lastMeasure > 5000) {
    lastMeasure = now;
    int h = analogRead(10);
    if (isnan(h)) {
      Serial.println("DHT Cannot read from sensor!");
      return;
    }
    
    char snum[20];
    itoa(analogRead(10), snum, 10);
//  Publishes tilt values to mqtt.
    client.publish("home/2/tilt",snum);
    delay(500);
  }
}