first commit

3 years ago · a2cc4eade5
1 changed files with 142 additions and 0 deletions
--- a/temp/beedroom
+++ b/temp/beedroom
@ -0,0 +1,142 @@
+#include <DHT.h> 
+#include <ESP8266WiFi.h>
+#include <PubSubClient.h>
+
+// WiFi Info
+const char* ssid = "IoT-Zecevic";
+const char* password = "IoTSifra123456!";
+
+//MQTT data
+const char* mqttServer = "192.168.1.11";
+const int mqttPort = 1883;
+const char* mqttUser = "yourMQTTuser";
+const char* mqttPassword = "yourMQTTpassword";
+WiFiClient espClient;
+PubSubClient MQTTclient(espClient);
+
+// DHT setup
+#define DHTPIN 2
+#define DHTTYPE DHT11  
+DHT dht(DHTPIN, DHTTYPE); 
+
+// Global Vars
+float global_temp;
+float global_hym;
+//update
+long previousMillis = 0; 
+long interval = 60000;  //ms
+
+//Start web server
+WiFiServer server(80);
+
+void initWiFi() {
+  WiFi.mode(WIFI_STA);
+  WiFi.begin(ssid, password);
+  Serial.print("Connecting to WiFi ..");
+  while (WiFi.status() != WL_CONNECTED) {
+    Serial.print('.');
+    delay(1000);
+  }
+  Serial.println(WiFi.localIP());
+}
+
+void reconect() {
+    while (MQTTclient.connect("ESP32Client", mqttUser, mqttPassword )) {
+    Serial.println("Connecting to MQTT...");
+  }
+}
+
+// prepare a web page to be send to a client (web browser)
+String prepareHtmlPage()
+{
+  String htmlPage;
+  htmlPage.reserve(1024);               // prevent ram fragmentation
+  htmlPage = F("HTTP/1.1 200 OK\r\n"
+               "Content-Type: text/html\r\n"
+               "Connection: close\r\n"  // the connection will be closed after completion of the response
+               "Refresh: 5\r\n"         // refresh the page automatically every 5 sec
+               "\r\n"
+               "<!DOCTYPE HTML>"
+               "<html>");
+  htmlPage += F("</p>"
+                "<p><b>Temperature:</b> ");
+  htmlPage += global_temp;
+  htmlPage += F("</p>"
+                "<p><b>Humidity:</b> ");
+  htmlPage += global_hym;
+  
+  htmlPage += F("</html>"
+                "\r\n");
+  return htmlPage;
+}
+
+void setup() {
+  Serial.begin(115200);
+  initWiFi();
+  dht.begin(); // Start DHT
+
+  server.begin();
+  Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str());
+
+  //connect to MQTT
+  MQTTclient.setServer(mqttServer, mqttPort);
+  //MQTTclient.setCallback(callback);
+ 
+  while (!MQTTclient.connected()) {
+ 
+    if (MQTTclient.connect("ESP32Client", mqttUser, mqttPassword )) {
+       Serial.println("Connected to mqtt!");
+    } else {
+      Serial.print("failed with state ");
+      Serial.print(MQTTclient.state());
+      delay(2000);
+    }
+  }
+}
+
+void loop() {
+  global_temp = dht.readTemperature();
+  global_hym = dht.readHumidity();
+
+  Serial.print("Temperatrure: ");
+  Serial.println(global_temp);
+  Serial.print("Humidity: ");
+  Serial.println(global_hym);
+
+  unsigned long currentMillis = millis();
+  if(currentMillis - previousMillis > interval) {  
+    previousMillis = currentMillis;
+    if (!MQTTclient.connected()) {
+      WiFi.reconnect();
+      reconect();
+    }
+    MQTTclient.publish("my/BedRoom/Temperature", String(global_temp).c_str());
+    MQTTclient.publish("my/BedRoom/Humidity", String(global_hym).c_str());
+  }
+
+  WiFiClient serverClient = server.available();
+  if (serverClient)
+  {
+    while (serverClient.connected())
+    {
+      // read line by line what the client (web browser) is requesting
+      if (serverClient.available())
+      {
+        String line = serverClient.readStringUntil('\r');
+        if (line.length() == 1 && line[0] == '\n')
+        {
+          serverClient.println(prepareHtmlPage());
+          break;
+        }
+      }
+    }
+
+    while (serverClient.available()) {
+      serverClient.read();
+    }
+    // close the connection:
+    serverClient.stop();
+  }
+
+  delay(2000);
+}