// Include Libraries
//#include <esp_now.h> ////////////////////////////
//#include <WiFi.h>   /////////////////////////////////
 
// Variables for test data
int int_value;
float float_value;
bool bool_value = true;
 
// MAC Address of responder - edit as required
uint8_t broadcastAddress[] = {0x24, 0x6F, 0x28, 0x7A, 0xAE, 0x7C};
 
// Define a data structure
typedef struct struct_message {
  char a[32];
  int b;
  float c;
  bool d;
} struct_message;
 
// Create a structured object
struct_message myData;
 
// Peer info
//esp_now_peer_info_t peerInfo; ///////////////
 
// Callback function called when data is sent

/*    //////////////////
void OnDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
  Serial.print("\r\nLast Packet Send Status:\t");
  //Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Delivery Success" : "Delivery Fail"); 


}*/ //////////////////
 
void setup() {
  
  // Set up Serial Monitor
  Serial.begin(115200);


  char txt[25];
  txt[0] = '\0';

  //Serial.begin(57600);

  strcat(txt, "Hello");

    
  strcat(txt, " World");
  Serial.println(txt);

  strcpy(txt, "Hello");
 Serial.println(txt);

 strcat(txt, " World");
  Serial.println(txt);



delay(5000);
 
  // Set ESP32 as a Wi-Fi Station
  //WiFi.mode(WIFI_STA); /////////////////////////////////
 
  // Initilize ESP-NOW 
  /*  //////////////////////////////
  if (esp_now_init() != ESP_OK) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }
 
 */   ///////////////////////////////

  // Register the send callback
  //esp_now_register_send_cb(OnDataSent); ///////////////////////////////////////
  
  // Register peer
  /* //////////////////////////
  memcpy(peerInfo.peer_addr, broadcastAddress, 6);
  peerInfo.channel = 0;  
  peerInfo.encrypt = false;

  */ /////////////////////////
  
  // Add peer   
    /*   //////////////////////////////////////////
  if (esp_now_add_peer(&peerInfo) != ESP_OK){
    Serial.println("Failed to add peer");
    return;
  }

  */ //////////////////////////////////
}
 
void loop() {
 
  // Create test data
 
  // Generate a random integer
  int_value = random(1,20);
 
  // Use integer to make a new float
  float_value = 1.3 * int_value;
 
  // Invert the boolean value
  bool_value = !bool_value;
  
  // Format structured data
   strcpy(myData.a, "Welcome to the Workshop!"); ///////////////////
 // myData.a = "Welcome to the Workshop!";  ///----------------------
  myData.b = int_value;
  myData.c = float_value;
  myData.d = bool_value;
  
  // Send message via ESP-NOW
 // esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *) &myData, sizeof(myData));  /////////////////////////////

  /* ////////////////////////////
  if (result == ESP_OK) {
    Serial.println("Sending confirmed");
  }
  else {
    Serial.println("Sending error");
  }

  */////////////////////

  Serial.println(myData.a);  ///--------------------------------
  Serial.println(myData.b);  ///--------------------------------
  Serial.println(myData.c);  ///--------------------------------
  Serial.println(myData.d);  ///--------------------------------

  delay(2000);
}