#include <esp_now.h>
#include <WiFi.h>

// Define the broadcast address
uint8_t broadcastAddress[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};

void setup() {
  // Initialize WiFi
  WiFi.mode(WIFI_STA);

  // Initialize ESP-NOW
  if (esp_now_init() != ESP_OK) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }

  // Register peer devices
  esp_now_peer_info_t peerInfo;
  memcpy(peerInfo.peer_addr, broadcastAddress, 6);
  peerInfo.encrypt = false; // No encryption for broadcast
  if (esp_now_add_peer(&peerInfo) != ESP_OK) {
    Serial.println("Failed to add peer");
    return;
  }
}

void loop() {
  // Your data to send
  String dataToSend = "Hello from ESP8266";

  // Send data
  esp_now_send(broadcastAddress, (uint8_t*)dataToSend.c_str(), dataToSend.length());

  // Add a delay between broadcasts if needed
  delay(5000); // 5 seconds
}