#include <SPI.h>
//#include <nRF24L01.h>
#include <RF24.h>
#include <Button.h>

RF24 radio(7, 8); // CE, CSN pins

const byte address[6] = "00001";
const int txButtonPin = 2; // Pin connected to the button
const int txLedPin = 12;

Button txButton(txButtonPin); // Connect your button between pin 2 and GND

void setup() {
  Serial.begin(9600);
  pinMode(txLedPin, OUTPUT); // Initialize LED pin as output
  radio.begin();
  radio.openWritingPipe(address);
  radio.setPALevel(RF24_PA_HIGH);
  radio.setRetries(15, 15);
  txButton.begin();
}

void loop() {
  toggleTxButton();
}

void toggleTxButton() {
  // Toggled txButton
  if (txButton.toggled()) {
    if (txButton.read() == Button::PRESSED) {
      Serial.println("txButton has been pressed: activate transmission");
      digitalWrite(txLedPin, HIGH);
      
      // Stop listening, send data, then start listening again
      radio.stopListening(); // Prepare for transmission
      sendData();
      delay(500); // Debounce delay
      
      radio.startListening(); // Switch back to receiving mode
    } else {
      Serial.println("txButton has been released: stop transmission");
      digitalWrite(txLedPin, LOW);
      
      // Check for incoming data
      receiveData();
    }
  }
}

void sendData() {
  const char text[] = "Hello, world!";
  Serial.print("Sending: ");
  Serial.println(text);  // Print the data being sent
  
  bool txStatus = radio.write(&text, sizeof(text));
  
  if (txStatus) {
    Serial.println("Data sent.");
  } else {
    Serial.println("Data send failed.");
  }
  
  delay(100); // Small delay to ensure stability
}


void receiveData() {

  radio.startListening(); // Ensure the radio is in listening mode
  
  if (radio.available()) {
    char text[32] = "";
    radio.read(&text, sizeof(text));
    
    // Print the received data
    Serial.print("Received: '");
    Serial.print(text);
    Serial.println("'");
    
    // Debugging: Print each character in hexadecimal
    for (int i = 0; i < sizeof(text); i++) {
      Serial.print(text[i], HEX);
      Serial.print(" ");
    }
    Serial.println();
  } else {
    Serial.println("No data received.");
  }
}