In global part of main “.ino” file:

#include
#include
#include “nRF24L01.h”
#include “printf.h”

// Setup Radio parameters / data storage
RF24 radio(8,7); //CE, CSN
uint8_t frame[27];
uint8_t packetType = 0;
uint32_t uid = 0;

In Setup:

radio.begin();
radio.setChannel(25);
radio.setPayloadSize(27);
radio.setAutoAck(false);
radio.setDataRate(RF24_250KBPS);
radio.setCRCLength(RF24_CRC_DISABLED); // was 8
radio.openReadingPipe(1,0xC2BD0DLL);
radio.startListening();
radio.printDetails();

In Loop:

if ( radio.available() )
{
  // Get the packet from the radio
  radio.read( &frame, sizeof(frame) );
  parseFrame();

  if (1)
  {
    printf(“PacketType: %X, UID: %08lX\n”, packetType, uid);
    printf(“\r\n”);
  }
}

Functions to add after Loop:

void parseFrame(void)
{
  uid = frame[1];
  uid <<= 8;
  uid |= frame[2];
  uid <<= 8;
  uid |= frame[3];
  uid <<= 8;
  uid |= frame[4];

  packetType = frame[0];
}

void printFrame(void)
{
  int i;
  printf("Frame: ");
  for(i = 0 ; i < 27 ; i++)
  {
    printf(" ");
    printf("%02X", frame[i]); // prints value as string in hexadecimal
  }
  printf("\r\n");
}