Tugas Akhir - ESP32 Node Mesh

#include <painlessMesh.h>

#define MESH_PREFIX     "yourMeshNetwork"
#define MESH_PASSWORD   "yourMeshPassword"
#define MESH_PORT       5555

#define LED_PIN 2 // Pin untuk LED indikator

Scheduler userScheduler; // to control your personal task
painlessMesh mesh;

uint32_t lastSendTime = 0;
uint32_t sendInterval = 5000; // Kirim data setiap 5 detik

void receivedCallback(uint32_t from, String &msg) {
  Serial.printf("Received from %u msg=%s\n", from, msg.c_str());
}

void newConnectionCallback(uint32_t nodeId) {
  Serial.printf("--> New Connection, nodeId = %u\n", nodeId);
}

void changedConnectionCallback() {
  Serial.printf("Changed connections\n");
  if (mesh.getNodeList().size() == 0) {
    digitalWrite(LED_PIN, LOW);     // Matikan LED jika tidak ada koneksi
  } else {
    digitalWrite(LED_PIN, HIGH);    // Nyalakan LED jika ada koneksi
  }
}

void nodeTimeAdjustedCallback(int32_t offset) {
  Serial.printf("Adjusted time %u. Offset = %d\n", mesh.getNodeTime(), offset);
}

void sendRandomData() {
  uint32_t now = millis();
  if (now - lastSendTime >= sendInterval) {
    lastSendTime = now;
    if (mesh.getNodeList().size() > 0) {
      uint32_t randomData = random(100);
      String message = "Random Data: " + String(randomData);
      mesh.sendBroadcast(message);
      Serial.println("Sent: " + message);
    } else {
      Serial.println("Not connected to the mesh network");
    }
  }
}


void setup() {
  Serial.begin(115200);

  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, LOW); // Mematikan LED pada awalnya

  mesh.setDebugMsgTypes(ERROR | STARTUP);
  mesh.init(MESH_PREFIX, MESH_PASSWORD, &userScheduler, MESH_PORT);
  mesh.onReceive(&receivedCallback);
  mesh.onNewConnection(&newConnectionCallback);
  mesh.onChangedConnections(&changedConnectionCallback);
  mesh.onNodeTimeAdjusted(&nodeTimeAdjustedCallback);

  Task sendRandomDataTask(1000, TASK_FOREVER, &sendRandomData); // Buat objek Task
  userScheduler.addTask(sendRandomDataTask); // Tambahkan objek Task ke scheduler
  sendRandomDataTask.enable(); // Aktifkan objek Task
}

void loop() {
  mesh.update();
  userScheduler.execute(); // Jalankan scheduler
}