ESP32 (Sub-Node) code

#include <WiFi.h>
#include <esp_mesh.h>

#define MESH_ID "ESP32_MESH_NETWORK"

void setup() {
  Serial.begin(115200);
  WiFi.mode(WIFI_AP_STA);

  mesh_init();
  mesh_set_router(MESH_ID, "your_ssid", "your_password");

  esp_mesh_start();
  Serial.println("Sub-node started");
}

void loop() {
  // Sub-node logic
}