Lab_interaccio/2018/UDPSendReceiveString/UDPSendReceiveString.ino

/*
  UDPSendReceive.pde:
 This sketch receives UDP message strings, prints them to the serial port
 and sends an "acknowledge" string back to the sender

 A Processing sketch is included at the end of file that can be used to send
 and received messages for testing with a computer.

 created 21 Aug 2010
 by Michael Margolis

 This code is in the public domain.
 */


#include <SPI.h>
     #include "wiring_private.h" // pinPeripheral() function
     
#include <Ethernet2.h>
#include <EthernetUdp2.h>         // UDP library from: bjoern@cs.stanford.edu 12/30/2008

#include "nRF24L01MOD.h"
#include "RF24MOD.h"
#include "printfMOD.h"

#define ETHERNET_ON false
#define RADIOSEND   true

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
IPAddress ip(192, 168, 1, 60);

unsigned int localPort = 8888;      // local port to listen on

// buffers for receiving and sending data
char packetBuffer[UDP_TX_PACKET_MAX_SIZE]; //buffer to hold incoming packet,
char  ReplyBuffer[] = "acknowledged";       // a string to send back

// An EthernetUDP instance to let us send and receive packets over UDP
EthernetUDP Udp;


#define CE_PIN   9
#define CSN_PIN  6

int radioId = 'F'; // id fijo para la cama. Fuera del rango de los IDs DIP

/*-----( Declare objects )-----*/
RF24 radio(CE_PIN, CSN_PIN); // Create a Radio
/*-----( Declare Variables )-----*/
uint8_t CMD[ 32 ]; // CMD + Ch + 6

// NOTE: the "LL" at the end of the constant is "LongLong" type
const uint64_t pipe = 0xE8E8F0F0E1LL; // Define the transmit pipe

int ch = 76; // canal para sala developpers. Por defecto es el canal 76 (showroom)

void setup() {
    // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }
  // start the Ethernet and UDP:
  Ethernet.begin(mac, ip);
  Udp.begin(localPort);

  radioId = 1;
  radio.begin();
  printf_begin();
  radio.setDataRate( RF24_250KBPS );
  radio.setPALevel( RF24_PA_MAX );
  radio.setAutoAck(0);
  radio.setPayloadSize(8);
  radio.setChannel(ch); 
  #if radiosend
    radio.openWritingPipe(pipe);
  #else
    radio.openReadingPipe(1, pipe);
    radio.startListening();
  #endif
  radio.printDetails();
  
}

void loop() {

  #if ETHERNET_ON
      // if there's data available, read a packet
      int packetSize = Udp.parsePacket();
      if (packetSize)
      {
        Serial.print("Received packet of size ");
        Serial.println(packetSize);
        Serial.print("From ");
        IPAddress remote = Udp.remoteIP();
        for (int i = 0; i < 4; i++)
        {
          Serial.print(remote[i], DEC);
          if (i < 3)
          {
            Serial.print(".");
          }
        }
        Serial.print(", port ");
        Serial.println(Udp.remotePort());
    
        // read the packet into packetBufffer
        Udp.read(packetBuffer, UDP_TX_PACKET_MAX_SIZE);
        Serial.println("Contents:");
        Serial.println(packetBuffer);
    
        // send a reply, to the IP address and port that sent us the packet we received
        Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
        Udp.write(ReplyBuffer);
        Udp.endPacket();
      }
      delay(10);
   #endif
}


/*
  Processing sketch to run with this example
 =====================================================

 // Processing UDP example to send and receive string data from Arduino
 // press any key to send the "Hello Arduino" message


 import hypermedia.net.*;

 UDP udp;  // define the UDP object


 void setup() {
 udp = new UDP( this, 6000 );  // create a new datagram connection on port 6000
 //udp.log( true ); 		// <-- printout the connection activity
 udp.listen( true );           // and wait for incoming message
 }

 void draw()
 {
 }

 void keyPressed() {
 String ip       = "192.168.1.177";	// the remote IP address
 int port        = 8888;		// the destination port

 udp.send("Hello World", ip, port );   // the message to send

 }

 void receive( byte[] data ) { 			// <-- default handler
 //void receive( byte[] data, String ip, int port ) {	// <-- extended handler

 for(int i=0; i < data.length; i++)
 print(char(data[i]));
 println();
 }
 */