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

RF24 radio(9,10);

// Radio pipe addresses for the 2 nodes to communicate.
const uint64_t pipes[2] = { 0xF0F0F0F0E1EE, 0xF0F0F0F0D2EE  };

 // [OPDRACHT WEEK 3]
int LED_OUTPUT = 7;

long startMillis;

void setup(void)
{
  Serial.begin(57600);
  printf_begin();

  // [OPDRACHT WEEK 3]
  pinMode(LED_OUTPUT, OUTPUT);
  //
  // Setup and configure rf radio
  //
  radio.begin();

  // optionally, increase the delay between retries & # of retries
  radio.setRetries(15,15);

  radio.openWritingPipe(pipes[1]);
  radio.openReadingPipe(1,pipes[0]);

  // OPDRACHT [Week 4, 4.B]
  // radio.setChannel(3);
  // OPDRACHT [Week 4, 4.C]
  // radio.setDataRate(RF24_2MBPS);
  radio.startListening();
  radio.printDetails();
}

void loop(void)
{
    // if there is data ready
    if ( radio.available() )
    {
      // Dump the payloads until we've gotten everything
      unsigned long buttonState = 0;
      bool done = false;
      while (!done)
      {
        // Fetch the payload, and see if this was the last one.
        done = radio.read( &buttonState, sizeof(unsigned long) );
        // Spew it
        printf("Got payload %lu...",buttonState);

        // [OPDRACHT WEEK 3]
        // off because of data with the other week projects
        // digitalWrite(LED_OUTPUT, buttonState);

      }
      // First, stop listening so we can talk
      radio.stopListening();

      // Send the final one back.
      radio.write( &buttonState, sizeof(unsigned long) );
      printf("Sent response.\n\r");

      // Now, resume listening so we catch the next packets.
      radio.startListening();
    }

}
// vim:cin:ai:sts=2 sw=2 ft=cpp