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

// Structure example to receive data
// Must match the sender structure
typedef struct struct_message {
    int x;
    int y;
    bool b;
} struct_message;

// Create a struct_message called myData
struct_message myData;

// Callback function that will be executed when data is received
void OnDataRecv(const esp_now_recv_info_t *esp_now_info, const uint8_t *incomingData, int len) {
  // Copy incoming data into the myData structure
  memcpy(&myData, incomingData, sizeof(myData));

  // Print the MAC address of the sender
  // Serial.print("Received from MAC: ");
  // for (int i = 0; i < 6; i++) {
  //   Serial.printf("%02X", esp_now_info->src_addr[i]);
  //   if (i < 5) Serial.print(":");
  // }
  // Serial.println();

  // Print received data
  // Serial.print("x: ");
  Serial.print(myData.x);
  Serial.print(" ");
  Serial.print(myData.y);
  Serial.print(" ");
  Serial.println(myData.b);
}
 
void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);
  
  // Set device as a Wi-Fi Station
  WiFi.mode(WIFI_STA);

  // Initialize ESP-NOW
  if (esp_now_init() != ESP_OK) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }
  
  // Register callback function to receive data
  esp_now_register_recv_cb(OnDataRecv);

  Serial.println("Receiver ready. Waiting for data...");
}
 
void loop() {
  // Nothing to do here
}