SingleNRF24L01

#include <Arduino.h>
/*OLED Display*/
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

// Color definitions
#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define SDA A4
#define SCL A5
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

#include <SPI.h>
#include <Wire.h>
#include "nRF24L01.h"
#include "RF24.h"


RF24 radio(0, 2, 14, 12, 13);

const byte pipes[][6] = {"1000", "2000", "3000", "4000", "5000", "6000"};

//#include <WiFi.h>
//#include <HTTPClient.h>

const char* ssid = "UIR WIFI";
const char* password =  "";

byte channel = 101;
const String this_node = "F";

void radioConfig() {
  //  radio.begin();
  display.clearDisplay();
  display.setTextColor(WHITE);
  display.setTextSize(1);
  display.setCursor(0, 0);
  if (!radio.begin()) {
    display.println("Radio failed");
    display.display();
    for (;;);
  }
  if (radio.isChipConnected()) {
    display.println("Radio is connected");
    display.display();
  }
  radio.setChannel(channel);
  radio.setPayloadSize(32);
  radio.setPALevel(RF24_PA_MAX);
  radio.setDataRate(RF24_250KBPS);
  radio.openReadingPipe(0, pipes[5]); //F
  radio.startListening();
  //  //Serial.println();
  //  //Serial.println("Radio Received Start Listening");
}

void setup(void) {
  Serial.begin(115200);

  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    ////Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }

  display.clearDisplay();
  display.display();
  delay(1000);

  radioConfig();
  delay(2000);
}

String d;
void loop() {
  while (Serial.available()) {
    d = Serial.readString();
    radio.stopListening();
    radio.openWritingPipe(pipes[4]);
    char msg[33];
    d.toCharArray(msg, sizeof(msg));
    byte cek = radio.write(msg, sizeof(msg));
    radio.startListening();
  }
  readRadio();
}

char msg[33];
String data;
void readRadio() {
  delay(5);
  byte pipe_num = 0;
  if (radio.available(&pipe_num)) {
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(1);
      display.setCursor(0, 0);
      display.print("Reading...");
      radio.read(msg, sizeof(msg));
      data = String(msg);

    Serial.println("#################################");
    Serial.print("Data: ");
    Serial.println(msg);

    display.setCursor(0, 10);
    display.print("Message: ");
    display.println(msg);
    display.display();
    delay(2000);
  } else {
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(1);
    display.setCursor(0, 50);
    display.println("Radio no available");
    display.display();
  }
}