completed IoT sensor

IoT-sensor/index.js

@@ -0,0 +1,34 @@
+const { iot_sensor_data } = require("./modules/IoT-sensor");
+const client = require("./modules/mqtt");
+
+function publishData() {
+    let data = iot_sensor_data();
+
+    // MQTT logic
+    client.publish("iot-data", JSON.stringify(data), { qos: 1 }, (err) => {
+        if (err) {
+            console.error("Error publishing message:", err);
+        } else {
+            console.log("Message published");
+        }
+    });
+}
+
+client.on("connect", () => {
+    console.log("Connected to MQTT broker");
+    publishData();
+});
+
+client.on("end", () => {
+    console.log("Disconnected from MQTT broker");
+    client.reconnect = true;
+});
+
+client.on("error", (err) => {
+    console.error("Error:", err);
+    client.end(); 
+});
+
+//every 15 minutes
+//setInterval(publishData, 900000);
+setInterval(publishData, 600);

IoT-sensor/modules/IoT-sensor.js

@@ -51,15 +51,9 @@ function getRandomValue(min, max) {
 	return Math.random() * (max - min) + min;
 }
 
-async function iot_sensor_data() {
-	//5 minutes
-	setInterval(() => {
-		var json = generateRandomData();
-		console.log(json);
-	}, 600); //every 1 second
+function iot_sensor_data() {
+	return generateRandomData();
 }
 
-iot_sensor_data()
-
-module.exports = { iot_sensor_data } 
+module.exports = { iot_sensor_data };
 

IoT-sensor/modules/mqtt.js

@@ -3,43 +3,17 @@ const fs = require('fs');
 const path = require('path')
 require('dotenv').config({ path: path.resolve(__dirname, '../../.env') })
 
-// Configuration
 const brokerUrl = 'mqtt://mqtt.teeseng.uk';
 const options = {
-  port: 8883, // MQTT broker port with TLS
+  port: 8883, 
   username: process.env.MQTT_USER, 
   password: process.env.MQTT_PASS, 
-  protocol: 'mqtts', // Use MQTT over TLS
-    key: fs.readFileSync(path.resolve(__dirname, '../../cert/privkey.pem')), // Private key for the client
-    cert: fs.readFileSync(path.resolve(__dirname, '../../cert/cert.pem')), // Client certificate
+  protocol: 'mqtts', 
+    key: fs.readFileSync(path.resolve(__dirname, '../../cert/privkey.pem')),
+    cert: fs.readFileSync(path.resolve(__dirname, '../../cert/cert.pem')), 
 
 };
 
-// Create MQTT client
 const client = mqtt.connect(brokerUrl, options);
 
 module.exports = client; 
-// Event handlers
-client.on('connect', () => {
-  console.log('Connected to MQTT broker');
-  client.subscribe('your-topic'); // Subscribe to a topic
-  // Publish a message
-  client.publish('your-topic', 'Hello MQTT with TLS!', { qos: 1 }, (err) => {
-    if (err) {
-      console.error('Error publishing message:', err);
-    } else {
-      console.log('Message published');
-    }
-    client.end(); // Close the connection after publishing
-  });
-});
-
-client.on('message', (topic, message) => {
-  console.log(`Received message on topic ${topic}: ${message}`);
-  client.end(); // Close the connection after receiving a message
-});
-
-client.on('error', (err) => {
-  console.error('Error:', err);
-  client.end(); // Close the connection in case of an error
-});