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

// Callback volany po prijeti dat
void OnDataRecv(const uint8_t* mac, const uint8_t* incomingData, int len) {
  Serial.print("Data received: ");
  Serial.println((char*)incomingData);
}
 
void setup() {
  Serial.begin(115200);

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

  // Registrace callback po prijeti dat
  esp_now_register_recv_cb(OnDataRecv);
  Serial.println("Receiving ready");
}
 
void loop() {
}