95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
#include <ESP8266WiFi.h>
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#include <PubSubClient.h>
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// Update these with your network credentials
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const char* ssid = "Dispenduk Kecamatan Balung";
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const char* password = "iyainaja";
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// Update the MQTT server to your broker's address
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const char* mqtt_server = "192.168.43.27";
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WiFiClient espClient;
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PubSubClient client(espClient);
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const int relayPin = D1; // GPIO5 pada D1 Mini
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void setup() {
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Serial.begin(115200);
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setup_wifi();
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client.setServer(mqtt_server, 1883);
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client.setCallback(callback);
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pinMode(relayPin, OUTPUT);
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digitalWrite(relayPin, LOW); // Matikan relay pada awal
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}
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//memulai koneksi WiFi
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void setup_wifi() {
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delay(10);
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Serial.println();
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Serial.print("Connecting to ");
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Serial.println(ssid);
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println("");
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Serial.println("WiFi connected");
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Serial.println("IP address: ");
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Serial.println(WiFi.localIP());
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}
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//Proses Subscribe MQTT
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void callback(char* topic, byte* payload, unsigned int length) {
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Serial.print("Message arrived [");
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Serial.print(topic);
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Serial.print("] ");
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String message;
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for (unsigned int i = 0; i < length; i++) { //Mengonversi payload pesan dari byte array menjadi string.
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message += (char)payload[i];
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}
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Serial.println(message); //Mencetak pesan yang telah diterima dan dikonversi ke string ke Serial Monitor
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if (String(topic) == "home/switch/status") {
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if (message == "Off") {
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digitalWrite(relayPin, LOW); // Matikan relay
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Serial.println("Relay turned Off");
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} else if (message == "On") {
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digitalWrite(relayPin, HIGH); // Hidupkan relay
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Serial.println("Relay turned On");
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} else {
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Serial.println("Invalid message");
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}
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}
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}
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//Fungsi untuk menghubungkan kembali ke MQTT jika Koneksi terputus
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void reconnect() {
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// Loop until we're reconnected
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while (!client.connected()) {
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Serial.print("Attempting MQTT connection...");
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// Attempt to connect
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if (client.connect("ESP8266Client")) {
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Serial.println("connected");
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// Subscribe
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client.subscribe("home/switch/status");
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Serial.println("Subscribed to home/switch/status");
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} else {
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Serial.print("failed, rc=");
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Serial.print(client.state());
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Serial.println(" try again in 5 seconds");
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// Wait 5 seconds before retrying
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delay(5000);
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}
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}
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}
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//Memastikan MQTT tetap terhubung dan memproses pesan yang masuk.
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void loop() {
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if (!client.connected()) {
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reconnect();
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}
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client.loop();
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}
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