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Kode Program Arduino IDE AC.ino

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+// =================== Library ====================
+#include <WiFi.h>
+#include <WiFiClientSecure.h>
+#include <WiFiManager.h>
+#include <PubSubClient.h>
+#include <IRremoteESP8266.h>
+#include <IRsend.h>
+#include <ir_Panasonic.h>
+#include <DHT.h>
+#include <ArduinoOTA.h>
+
+// =================== Konfigurasi MQTT TLS HiveMQ ====================
+const char* mqtt_server = "0b5fa203aa8240e290978c7e42ed2d8b.s1.eu.hivemq.cloud";
+const int mqtt_port = 8883;
+const char* mqtt_user = "acremote";
+const char* mqtt_pass = "@Remote123";
+const char* mqtt_reset_topic = "ac/resetwifi"; // Untuk reset WiFi
+
+WiFiClientSecure secureClient;
+PubSubClient client(secureClient);
+
+// =================== IR AC ====================
+const uint16_t kIrLed = 4;
+IRPanasonicAc ac(kIrLed);
+
+// =================== DHT ====================
+#define DHTPIN 25
+#define DHTTYPE DHT22
+DHT dht(DHTPIN, DHTTYPE);
+unsigned long lastDHTRead = 0;
+const unsigned long dhtInterval = 5000;
+
+// =================== State AC ====================
+uint8_t suhu = 25;
+uint8_t fanSpeed = kPanasonicAcFanAuto;
+bool power = false;
+bool swingOn = true;
+
+// =================== OTA ====================
+void setup_ota() {
+  ArduinoOTA.setHostname("acremote");
+  ArduinoOTA.setPassword("@Remote123");
+
+  ArduinoOTA.onStart([]() {
+    Serial.println("Mulai update OTA...");
+  });
+  ArduinoOTA.onEnd([]() {
+    Serial.println("\nSelesai OTA");
+  });
+  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
+    Serial.printf("Progress: %u%%\r", (progress * 100) / total);
+  });
+  ArduinoOTA.onError([](ota_error_t error) {
+    Serial.printf("Error[%u]: ", error);
+  });
+
+  ArduinoOTA.begin();
+  Serial.println("OTA Siap!");
+}
+
+// =================== Kirim Sinyal IR ====================
+void kirimIR() {
+  if (power) {
+    ac.on();
+    ac.setTemp(suhu);
+    ac.setMode(kPanasonicAcCool);
+    ac.setFan(fanSpeed);
+    ac.setSwingVertical(swingOn ? kPanasonicAcSwingVAuto : kPanasonicAcSwingVMiddle);
+  } else {
+    ac.off();
+  }
+  ac.send();
+  Serial.println("Sinyal IR dikirim.");
+}
+
+// =================== Callback MQTT ====================
+void callback(char* topic, byte* payload, unsigned int length) {
+  payload[length] = '\0';
+  String message = String((char*)payload);
+  String tpc = String(topic);
+
+  Serial.print("Pesan [");
+  Serial.print(tpc);
+  Serial.print("]: ");
+  Serial.println(message);
+
+  if (tpc == "ac/power") {
+    if (message == "on") {
+      power = true;
+    } else if (message == "off") {
+      power = false;
+    }
+    kirimIR();
+  }
+
+  else if (tpc == "ac/temp") {
+    int temp = message.toInt();
+    if (temp >= 16 && temp <= 30) {
+      suhu = temp;
+      kirimIR();
+    }
+  }
+
+  else if (tpc == "ac/swing") {
+    swingOn = (message == "on");
+    kirimIR();
+  }
+
+  else if (tpc == "ac/fan") {
+    if (message == "auto") fanSpeed = kPanasonicAcFanAuto;
+    else if (message == "low") fanSpeed = kPanasonicAcFanMin;
+    else if (message == "medium") fanSpeed = kPanasonicAcFanMed;
+    else if (message == "high") fanSpeed = kPanasonicAcFanMax;
+    kirimIR();
+  }
+
+
+  else if (tpc == mqtt_reset_topic && message == "reset") {
+    Serial.println("Reset WiFi via MQTT...");
+    WiFiManager wm;
+    wm.resetSettings();
+    ESP.restart();
+  }
+}
+
+// =================== Reconnect MQTT ====================
+void connectMQTT() {
+  while (!client.connected()) {
+    Serial.print("Menghubungkan ke MQTT...");
+    if (client.connect("ESP32Client", mqtt_user, mqtt_pass)) {
+      Serial.println("Berhasil!");
+      client.subscribe("ac/power");
+      client.subscribe("ac/temp");
+      client.subscribe("ac/swing");
+      client.subscribe("ac/fan");
+      client.subscribe(mqtt_reset_topic);
+    } else {
+      Serial.print("Gagal, rc=");
+      Serial.print(client.state());
+      Serial.println(" coba lagi 5 detik...");
+      delay(5000);
+    }
+  }
+}
+
+// =================== Setup ====================
+void setup() {
+  Serial.begin(115200);
+  ac.begin();
+  dht.begin();
+
+  // Gunakan WiFiManager
+  WiFiManager wm;
+  if (!wm.autoConnect("ESP32_Config")) {
+    Serial.println("Gagal konek, restart ESP...");
+    ESP.restart();
+  }
+
+  // TLS: non-validasi sertifikat untuk sementara
+  secureClient.setInsecure();
+  client.setServer(mqtt_server, mqtt_port);
+  client.setCallback(callback);
+
+  setup_ota();
+}
+
+// =================== Loop ====================
+void loop() {
+  if (!client.connected()) {
+    connectMQTT();
+  }
+
+  client.loop();
+  ArduinoOTA.handle();  // Menangani OTA
+
+  // Offset kalibrasi (jika sensor DHT22 tidak akurat)
+  const float offsetTemp = -6.2;   // sesuaikan dengan remote AC
+  const float offsetHum  = 0.0;    // bisa disesuaikan jika perlu
+
+  // Threshold monitoring suhu terhadap remote
+  const float threshold = 1.0;     // toleransi suhu ±1°C dari setpoint
+  float targetRemote = suhu;      // suhu yang disetel dari remote AC (via MQTT)
+
+  // Baca dan kirim data DHT22 setiap interval
+  if (millis() - lastDHTRead > dhtInterval) {
+    lastDHTRead = millis();
+    float temp = dht.readTemperature();
+    float hum = dht.readHumidity();
+
+    if (!isnan(temp) && !isnan(hum)) {
+      // Terapkan offset kalibrasi
+      float calibratedTemp = temp + offsetTemp;
+      float calibratedHum = hum + offsetHum;
+
+      // Hitung status suhu terhadap setpoint
+      String status;
+      if (abs(calibratedTemp - targetRemote) <= threshold) {
+        status = "sesuai";
+      } else {
+        status = "belum sesuai";
+      }
+
+      // Kirim payload ke MQTT
+      String payload = "{\"suhu\":" + String(calibratedTemp, 1) +
+                       ",\"kelembapan\":" + String(calibratedHum, 1) +
+                       ",\"status\":\"" + status + "\"}";
+      client.publish("sensor/dht22", payload.c_str());
+      Serial.println("Dikirim: " + payload);
+    } else {
+      Serial.println("Gagal membaca sensor DHT22");
+    }
+  }
+}
+