개발환경 구축

FC_InferfaceBoard/.theia/launch.json

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+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  "version": "0.2.0",
+  "configurations": [
+  
+  ]
+}

FC_InferfaceBoard/FC_InferfaceBoard.ino

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+#include "Sc_AnalogIn.h"  // Differential analog input collector
+
+int Size_AI = 8;
+int AI_VALUES[] = {
+  0, 0, 0, 0, 0, 0, 0, 0
+};
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+  Serial.println("Start!");
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+  int i = 0;
+
+  AnalogIn(AI_VALUES, Size_AI);
+
+  for (i = 0; i < 8; i++) {
+    Serial.print(AI_VALUES[i]);
+    // Serial.println(AnalogTest(3));
+
+  }
+  Serial.println("");
+  delay(1000);
+}

libraries/Ethernet2/CONTRIBUTIONS.txt

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+---------------
+DHCP.cpp
+
+// DHCP Library v0.3 - April 25, 2009
+// Author: Jordan Terrell - blog.jordanterrell.com
+
+---------------
+DNS.cpp
+
+// Arduino DNS client for WizNet5100-based Ethernet shield
+// (c) Copyright 2009-2010 MCQN Ltd.
+// Released under Apache License, version 2.0
+
+---------------
+Ethernet2: 
+ modified 12 Aug 2013
+ by Soohwan Kim (suhwan@wiznet.co.kr)
+
+---------------
+UDP.cpp: bjoern@cs.stanford.edu 12/30/2008
+
+---------------
+
+Twitter.cpp - Arduino library to Post messages to Twitter using OAuth.
+  Copyright (c) NeoCat 2010-2011. All right reserved.
+
+---------------
+Wiz5500.cpp
+
+Copyright (c) 2010 by WIZnet <support@wiznet.co.kr>
+
+--------------
+Various by Arduino.org team

libraries/Ethernet2/README.md

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+Ethernet "2" Library for Arduino
+================================
+
+This Arduino library is for shields that use the **Wiznet [W5500]** chipset only.
+It does **not** work with other chipsets, such as the original Arduino Ethernet shield which
+uses the Wiznet [W5100] chipset.
+
+For more information about this library please visit us at: 
+http://www.arduino.cc/en/Reference/Ethernet
+
+
+W5500 Shields
+-------------
+
+* [Adafruit W5500 Ethernet Shield](https://www.adafruit.com/products/2971)
+* [Arduino Ethernet Shield v2](https://www.arduino.cc/en/Main/ArduinoEthernetShieldV2)
+* [Industruino Ethernet module](https://industruino.com/shop/product/ethernet-expansion-module-10)
+* [Wiznet W5500 Ethernet Shield](http://www.wiznet.co.kr/product-item/w5500-ethernet-shield/)
+
+
+License
+-------
+
+Copyright (c) 2009-2016 Arduino LLC. All right reserved.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+
+[W5100]:                   http://www.wiznet.co.kr/product-item/w5100/
+[W5500]:                   http://www.wiznet.co.kr/product-item/w5500/

libraries/Ethernet2/examples/AdvancedChatServer/AdvancedChatServer.ino

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+/*
+ Advanced Chat Server
+
+ A more advanced server that distributes any incoming messages 
+ to all connected clients but the client the message comes from.
+ To use telnet to  your device's IP address and type.
+ You can see the client's input in the serial monitor as well.
+ Using an Arduino Wiznet Ethernet shield.
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+ * Analog inputs attached to pins A0 through A5 (optional)
+
+ created 18 Dec 2009
+ by David A. Mellis
+ modified 9 Apr 2012
+ by Tom Igoe
+ redesigned to make use of operator== 25 Nov 2013
+ by Norbert Truchsess
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+
+// Enter a MAC address and IP address for your controller below.
+// The IP address will be dependent on your local network.
+// gateway and subnet are optional:
+byte mac[] = { 
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+IPAddress ip(192,168,1, 177);
+IPAddress gateway(192,168,1, 1);
+IPAddress subnet(255, 255, 0, 0);
+
+
+// telnet defaults to port 23
+EthernetServer server(23);
+
+EthernetClient clients[4];
+
+void setup() {
+  // initialize the ethernet device
+  Ethernet.begin(mac, ip, gateway, subnet);
+  // start listening for clients
+  server.begin();
+ // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+   while (!Serial) {
+    ; // wait for serial port to connect. Needed for Leonardo only
+  }
+
+
+  Serial.print("Chat server address:");
+  Serial.println(Ethernet.localIP());
+}
+
+void loop() {
+  // wait for a new client:
+  EthernetClient client = server.available();
+
+  // when the client sends the first byte, say hello:
+  if (client) {
+
+    boolean newClient = true;
+    for (byte i=0;i<4;i++) {
+      //check whether this client refers to the same socket as one of the existing instances:
+      if (clients[i]==client) {
+        newClient = false;
+        break;
+      }
+    }
+
+    if (newClient) {
+      //check which of the existing clients can be overridden:
+      for (byte i=0;i<4;i++) {
+        if (!clients[i] && clients[i]!=client) {
+          clients[i] = client;
+          // clead out the input buffer:
+          client.flush();
+          Serial.println("We have a new client");
+          client.print("Hello, client number: ");
+          client.print(i);
+          client.println();
+          break;
+        }
+      }
+    }
+
+    if (client.available() > 0) {
+      // read the bytes incoming from the client:
+      char thisChar = client.read();
+      // echo the bytes back to all other connected clients:
+      for (byte i=0;i<4;i++) {
+        if (clients[i] && (clients[i]!=client)) {
+          clients[i].write(thisChar);
+        }
+      }
+      // echo the bytes to the server as well:
+      Serial.write(thisChar);
+    }
+  }
+  for (byte i=0;i<4;i++) {
+    if (!(clients[i].connected())) {
+      // client.stop() invalidates the internal socket-descriptor, so next use of == will allways return false;
+      clients[i].stop();
+    }
+  }
+}

libraries/Ethernet2/examples/BarometricPressureWebServer/BarometricPressureWebServer.ino

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+/*
+  SCP1000 Barometric Pressure Sensor Display
+
+ Serves the output of a Barometric Pressure Sensor as a web page.
+ Uses the SPI library. For details on the sensor, see:
+ http://www.sparkfun.com/commerce/product_info.php?products_id=8161
+ http://www.vti.fi/en/support/obsolete_products/pressure_sensors/
+
+ This sketch adapted from Nathan Seidle's SCP1000 example for PIC:
+ http://www.sparkfun.com/datasheets/Sensors/SCP1000-Testing.zip
+
+ Circuit:
+ SCP1000 sensor attached to pins 6,7, and 11 - 13:
+ DRDY: pin 6
+ CSB: pin 7
+ MOSI: pin 11
+ MISO: pin 12
+ SCK: pin 13
+
+ created 31 July 2010
+ by Tom Igoe
+ */
+
+#include <Ethernet2.h>
+// the sensor communicates using SPI, so include the library:
+#include <SPI.h>
+
+
+// assign a MAC address for the ethernet controller.
+// fill in your address here:
+byte mac[] = {
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
+};
+// assign an IP address for the controller:
+IPAddress ip(192, 168, 1, 20);
+IPAddress gateway(192, 168, 1, 1);
+IPAddress subnet(255, 255, 255, 0);
+
+
+// Initialize the Ethernet server library
+// with the IP address and port you want to use
+// (port 80 is default for HTTP):
+EthernetServer server(80);
+
+
+//Sensor's memory register addresses:
+const int PRESSURE = 0x1F;      //3 most significant bits of pressure
+const int PRESSURE_LSB = 0x20;  //16 least significant bits of pressure
+const int TEMPERATURE = 0x21;   //16 bit temperature reading
+
+// pins used for the connection with the sensor
+// the others you need are controlled by the SPI library):
+const int dataReadyPin = 6;
+const int chipSelectPin = 7;
+
+float temperature = 0.0;
+long pressure = 0;
+long lastReadingTime = 0;
+
+void setup() {
+  // start the SPI library:
+  SPI.begin();
+
+  // start the Ethernet connection and the server:
+  Ethernet.begin(mac, ip);
+  server.begin();
+
+  // initalize the  data ready and chip select pins:
+  pinMode(dataReadyPin, INPUT);
+  pinMode(chipSelectPin, OUTPUT);
+
+  Serial.begin(9600);
+
+  //Configure SCP1000 for low noise configuration:
+  writeRegister(0x02, 0x2D);
+  writeRegister(0x01, 0x03);
+  writeRegister(0x03, 0x02);
+
+  // give the sensor and Ethernet shield time to set up:
+  delay(1000);
+
+  //Set the sensor to high resolution mode tp start readings:
+  writeRegister(0x03, 0x0A);
+
+}
+
+void loop() {
+  // check for a reading no more than once a second.
+  if (millis() - lastReadingTime > 1000) {
+    // if there's a reading ready, read it:
+    // don't do anything until the data ready pin is high:
+    if (digitalRead(dataReadyPin) == HIGH) {
+      getData();
+      // timestamp the last time you got a reading:
+      lastReadingTime = millis();
+    }
+  }
+
+  // listen for incoming Ethernet connections:
+  listenForEthernetClients();
+}
+
+
+void getData() {
+  Serial.println("Getting reading");
+  //Read the temperature data
+  int tempData = readRegister(0x21, 2);
+
+  // convert the temperature to celsius and display it:
+  temperature = (float)tempData / 20.0;
+
+  //Read the pressure data highest 3 bits:
+  byte  pressureDataHigh = readRegister(0x1F, 1);
+  pressureDataHigh &= 0b00000111; //you only needs bits 2 to 0
+
+  //Read the pressure data lower 16 bits:
+  unsigned int pressureDataLow = readRegister(0x20, 2);
+  //combine the two parts into one 19-bit number:
+  pressure = ((pressureDataHigh << 16) | pressureDataLow) / 4;
+
+  Serial.print("Temperature: ");
+  Serial.print(temperature);
+  Serial.println(" degrees C");
+  Serial.print("Pressure: " + String(pressure));
+  Serial.println(" Pa");
+}
+
+void listenForEthernetClients() {
+  // listen for incoming clients
+  EthernetClient client = server.available();
+  if (client) {
+    Serial.println("Got a client");
+    // an http request ends with a blank line
+    boolean currentLineIsBlank = true;
+    while (client.connected()) {
+      if (client.available()) {
+        char c = client.read();
+        // if you've gotten to the end of the line (received a newline
+        // character) and the line is blank, the http request has ended,
+        // so you can send a reply
+        if (c == '\n' && currentLineIsBlank) {
+          // send a standard http response header
+          client.println("HTTP/1.1 200 OK");
+          client.println("Content-Type: text/html");
+          client.println();
+          // print the current readings, in HTML format:
+          client.print("Temperature: ");
+          client.print(temperature);
+          client.print(" degrees C");
+          client.println("<br />");
+          client.print("Pressure: " + String(pressure));
+          client.print(" Pa");
+          client.println("<br />");
+          break;
+        }
+        if (c == '\n') {
+          // you're starting a new line
+          currentLineIsBlank = true;
+        }
+        else if (c != '\r') {
+          // you've gotten a character on the current line
+          currentLineIsBlank = false;
+        }
+      }
+    }
+    // give the web browser time to receive the data
+    delay(1);
+    // close the connection:
+    client.stop();
+  }
+}
+
+
+//Send a write command to SCP1000
+void writeRegister(byte registerName, byte registerValue) {
+  // SCP1000 expects the register name in the upper 6 bits
+  // of the byte:
+  registerName <<= 2;
+  // command (read or write) goes in the lower two bits:
+  registerName |= 0b00000010; //Write command
+
+  // take the chip select low to select the device:
+  digitalWrite(chipSelectPin, LOW);
+
+  SPI.transfer(registerName); //Send register location
+  SPI.transfer(registerValue); //Send value to record into register
+
+  // take the chip select high to de-select:
+  digitalWrite(chipSelectPin, HIGH);
+}
+
+
+//Read register from the SCP1000:
+unsigned int readRegister(byte registerName, int numBytes) {
+  byte inByte = 0;           // incoming from  the SPI read
+  unsigned int result = 0;   // result to return
+
+  // SCP1000 expects the register name in the upper 6 bits
+  // of the byte:
+  registerName <<=  2;
+  // command (read or write) goes in the lower two bits:
+  registerName &= 0b11111100; //Read command
+
+  // take the chip select low to select the device:
+  digitalWrite(chipSelectPin, LOW);
+  // send the device the register you want to read:
+  int command = SPI.transfer(registerName);
+  // send a value of 0 to read the first byte returned:
+  inByte = SPI.transfer(0x00);
+
+  result = inByte;
+  // if there's more than one byte returned,
+  // shift the first byte then get the second byte:
+  if (numBytes > 1) {
+    result = inByte << 8;
+    inByte = SPI.transfer(0x00);
+    result = result | inByte;
+  }
+  // take the chip select high to de-select:
+  digitalWrite(chipSelectPin, HIGH);
+  // return the result:
+  return(result);
+}

libraries/Ethernet2/examples/ChatServer/ChatServer.ino

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+/*
+ Chat  Server
+
+ A simple server that distributes any incoming messages to all
+ connected clients.  To use telnet to  your device's IP address and type.
+ You can see the client's input in the serial monitor as well.
+ Using an Arduino Wiznet Ethernet shield.
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+ * Analog inputs attached to pins A0 through A5 (optional)
+
+ created 18 Dec 2009
+ by David A. Mellis
+ modified 9 Apr 2012
+ by Tom Igoe
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+
+// Enter a MAC address and IP address for your controller below.
+// The IP address will be dependent on your local network.
+// gateway and subnet are optional:
+byte mac[] = {
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
+};
+IPAddress ip(192, 168, 1, 177);
+IPAddress gateway(192, 168, 1, 1);
+IPAddress subnet(255, 255, 0, 0);
+
+
+// telnet defaults to port 23
+EthernetServer server(23);
+boolean alreadyConnected = false; // whether or not the client was connected previously
+
+void setup() {
+  // initialize the ethernet device
+  Ethernet.begin(mac, ip, gateway, subnet);
+  // start listening for clients
+  server.begin();
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for Leonardo only
+  }
+
+
+  Serial.print("Chat server address:");
+  Serial.println(Ethernet.localIP());
+}
+
+void loop() {
+  // wait for a new client:
+  EthernetClient client = server.available();
+
+  // when the client sends the first byte, say hello:
+  if (client) {
+    if (!alreadyConnected) {
+      // clead out the input buffer:
+      client.flush();
+      Serial.println("We have a new client");
+      client.println("Hello, client!");
+      alreadyConnected = true;
+    }
+
+    if (client.available() > 0) {
+      // read the bytes incoming from the client:
+      char thisChar = client.read();
+      // echo the bytes back to the client:
+      server.write(thisChar);
+      // echo the bytes to the server as well:
+      Serial.write(thisChar);
+    }
+  }
+}
+
+
+

libraries/Ethernet2/examples/DhcpAddressPrinter/DhcpAddressPrinter.ino

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+/*
+  DHCP-based IP printer
+
+ This sketch uses the DHCP extensions to the Ethernet library
+ to get an IP address via DHCP and print the address obtained.
+ using an Arduino Wiznet Ethernet shield.
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+
+ created 12 April 2011
+ modified 9 Apr 2012
+ by Tom Igoe
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+
+// Enter a MAC address for your controller below.
+// Newer Ethernet shields have a MAC address printed on a sticker on the shield
+byte mac[] = {
+  0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02
+};
+
+// Initialize the Ethernet client library
+// with the IP address and port of the server
+// that you want to connect to (port 80 is default for HTTP):
+EthernetClient client;
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  // this check is only needed on the Leonardo:
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for Leonardo only
+  }
+
+  // start the Ethernet connection:
+  if (Ethernet.begin(mac) == 0) {
+    Serial.println("Failed to configure Ethernet using DHCP");
+    // no point in carrying on, so do nothing forevermore:
+    for (;;)
+      ;
+  }
+  // print your local IP address:
+  Serial.print("My IP address: ");
+  for (byte thisByte = 0; thisByte < 4; thisByte++) {
+    // print the value of each byte of the IP address:
+    Serial.print(Ethernet.localIP()[thisByte], DEC);
+    Serial.print(".");
+  }
+  Serial.println();
+}
+
+void loop() {
+
+}
+
+

libraries/Ethernet2/examples/DhcpChatServer/DhcpChatServer.ino

@@ -0,0 +1,88 @@
+/*
+ DHCP Chat  Server
+
+ A simple server that distributes any incoming messages to all
+ connected clients.  To use telnet to  your device's IP address and type.
+ You can see the client's input in the serial monitor as well.
+ Using an Arduino Wiznet Ethernet shield.
+
+ THis version attempts to get an IP address using DHCP
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+
+ created 21 May 2011
+ modified 9 Apr 2012
+ by Tom Igoe
+ Based on ChatServer example by David A. Mellis
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+
+// Enter a MAC address and IP address for your controller below.
+// The IP address will be dependent on your local network.
+// gateway and subnet are optional:
+byte mac[] = {
+  0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x02
+};
+IPAddress ip(192, 168, 1, 177);
+IPAddress gateway(192, 168, 1, 1);
+IPAddress subnet(255, 255, 0, 0);
+
+// telnet defaults to port 23
+EthernetServer server(23);
+boolean gotAMessage = false; // whether or not you got a message from the client yet
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  // this check is only needed on the Leonardo:
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for Leonardo only
+  }
+
+
+  // start the Ethernet connection:
+  Serial.println("Trying to get an IP address using DHCP");
+  if (Ethernet.begin(mac) == 0) {
+    Serial.println("Failed to configure Ethernet using DHCP");
+    // initialize the ethernet device not using DHCP:
+    Ethernet.begin(mac, ip, gateway, subnet);
+  }
+  // print your local IP address:
+  Serial.print("My IP address: ");
+  ip = Ethernet.localIP();
+  for (byte thisByte = 0; thisByte < 4; thisByte++) {
+    // print the value of each byte of the IP address:
+    Serial.print(ip[thisByte], DEC);
+    Serial.print(".");
+  }
+  Serial.println();
+  // start listening for clients
+  server.begin();
+
+}
+
+void loop() {
+  // wait for a new client:
+  EthernetClient client = server.available();
+
+  // when the client sends the first byte, say hello:
+  if (client) {
+    if (!gotAMessage) {
+      Serial.println("We have a new client");
+      client.println("Hello, client!");
+      gotAMessage = true;
+    }
+
+    // read the bytes incoming from the client:
+    char thisChar = client.read();
+    // echo the bytes back to the client:
+    server.write(thisChar);
+    // echo the bytes to the server as well:
+    Serial.print(thisChar);
+  }
+}
+

libraries/Ethernet2/examples/TelnetClient/TelnetClient.ino

@@ -0,0 +1,94 @@
+/*
+  Telnet client
+
+ This sketch connects to a a telnet server (http://www.google.com)
+ using an Arduino Wiznet Ethernet shield.  You'll need a telnet server
+ to test this with.
+ Processing's ChatServer example (part of the network library) works well,
+ running on port 10002. It can be found as part of the examples
+ in the Processing application, available at
+ http://processing.org/
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+
+ created 14 Sep 2010
+ modified 9 Apr 2012
+ by Tom Igoe
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+
+// 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, 177);
+
+// Enter the IP address of the server you're connecting to:
+IPAddress server(1, 1, 1, 1);
+
+// Initialize the Ethernet client library
+// with the IP address and port of the server
+// that you want to connect to (port 23 is default for telnet;
+// if you're using Processing's ChatServer, use  port 10002):
+EthernetClient client;
+
+void setup() {
+  // start the Ethernet connection:
+  Ethernet.begin(mac, ip);
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for Leonardo only
+  }
+
+
+  // give the Ethernet shield a second to initialize:
+  delay(1000);
+  Serial.println("connecting...");
+
+  // if you get a connection, report back via serial:
+  if (client.connect(server, 10002)) {
+    Serial.println("connected");
+  }
+  else {
+    // if you didn't get a connection to the server:
+    Serial.println("connection failed");
+  }
+}
+
+void loop()
+{
+  // if there are incoming bytes available
+  // from the server, read them and print them:
+  if (client.available()) {
+    char c = client.read();
+    Serial.print(c);
+  }
+
+  // as long as there are bytes in the serial queue,
+  // read them and send them out the socket if it's open:
+  while (Serial.available() > 0) {
+    char inChar = Serial.read();
+    if (client.connected()) {
+      client.print(inChar);
+    }
+  }
+
+  // if the server's disconnected, stop the client:
+  if (!client.connected()) {
+    Serial.println();
+    Serial.println("disconnecting.");
+    client.stop();
+    // do nothing:
+    while (true);
+  }
+}
+
+
+
+

libraries/Ethernet2/examples/UDPSendReceiveString/UDPSendReceiveString.ino

@@ -0,0 +1,119 @@
+/*
+  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>         // needed for Arduino versions later than 0018
+#include <Ethernet2.h>
+#include <EthernetUdp2.h>         // UDP library from: bjoern@cs.stanford.edu 12/30/2008
+
+
+// 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, 177);
+
+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;
+
+void setup() {
+  // start the Ethernet and UDP:
+  Ethernet.begin(mac, ip);
+  Udp.begin(localPort);
+
+  Serial.begin(9600);
+}
+
+void loop() {
+  // 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);
+}
+
+
+/*
+  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();
+ }
+ */
+
+

libraries/Ethernet2/examples/UdpNtpClient/UdpNtpClient.ino

@@ -0,0 +1,142 @@
+/*
+
+ Udp NTP Client
+
+ Get the time from a Network Time Protocol (NTP) time server
+ Demonstrates use of UDP sendPacket and ReceivePacket
+ For more on NTP time servers and the messages needed to communicate with them,
+ see http://en.wikipedia.org/wiki/Network_Time_Protocol
+
+ created 4 Sep 2010
+ by Michael Margolis
+ modified 9 Apr 2012
+ by Tom Igoe
+
+ This code is in the public domain.
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+#include <EthernetUdp2.h>
+
+// Enter a MAC address for your controller below.
+// Newer Ethernet shields have a MAC address printed on a sticker on the shield
+byte mac[] = {
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
+};
+
+unsigned int localPort = 8888;       // local port to listen for UDP packets
+
+char timeServer[] = "time.nist.gov"; // time.nist.gov NTP server
+
+const int NTP_PACKET_SIZE = 48; // NTP time stamp is in the first 48 bytes of the message
+
+byte packetBuffer[ NTP_PACKET_SIZE]; //buffer to hold incoming and outgoing packets
+
+// A UDP instance to let us send and receive packets over UDP
+EthernetUDP Udp;
+
+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 Ethernet and UDP
+  if (Ethernet.begin(mac) == 0) {
+    Serial.println("Failed to configure Ethernet using DHCP");
+    // no point in carrying on, so do nothing forevermore:
+    for (;;)
+      ;
+  }
+  Udp.begin(localPort);
+}
+
+void loop()
+{
+  sendNTPpacket(timeServer); // send an NTP packet to a time server
+
+  // wait to see if a reply is available
+  delay(1000);
+  if ( Udp.parsePacket() ) {
+    // We've received a packet, read the data from it
+    Udp.read(packetBuffer, NTP_PACKET_SIZE); // read the packet into the buffer
+
+    //the timestamp starts at byte 40 of the received packet and is four bytes,
+    // or two words, long. First, esxtract the two words:
+
+    unsigned long highWord = word(packetBuffer[40], packetBuffer[41]);
+    unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]);
+    // combine the four bytes (two words) into a long integer
+    // this is NTP time (seconds since Jan 1 1900):
+    unsigned long secsSince1900 = highWord << 16 | lowWord;
+    Serial.print("Seconds since Jan 1 1900 = " );
+    Serial.println(secsSince1900);
+
+    // now convert NTP time into everyday time:
+    Serial.print("Unix time = ");
+    // Unix time starts on Jan 1 1970. In seconds, that's 2208988800:
+    const unsigned long seventyYears = 2208988800UL;
+    // subtract seventy years:
+    unsigned long epoch = secsSince1900 - seventyYears;
+    // print Unix time:
+    Serial.println(epoch);
+
+
+    // print the hour, minute and second:
+    Serial.print("The UTC time is ");       // UTC is the time at Greenwich Meridian (GMT)
+    Serial.print((epoch  % 86400L) / 3600); // print the hour (86400 equals secs per day)
+    Serial.print(':');
+    if ( ((epoch % 3600) / 60) < 10 ) {
+      // In the first 10 minutes of each hour, we'll want a leading '0'
+      Serial.print('0');
+    }
+    Serial.print((epoch  % 3600) / 60); // print the minute (3600 equals secs per minute)
+    Serial.print(':');
+    if ( (epoch % 60) < 10 ) {
+      // In the first 10 seconds of each minute, we'll want a leading '0'
+      Serial.print('0');
+    }
+    Serial.println(epoch % 60); // print the second
+  }
+  // wait ten seconds before asking for the time again
+  delay(10000);
+}
+
+// send an NTP request to the time server at the given address
+unsigned long sendNTPpacket(char* address)
+{
+  // set all bytes in the buffer to 0
+  memset(packetBuffer, 0, NTP_PACKET_SIZE);
+  // Initialize values needed to form NTP request
+  // (see URL above for details on the packets)
+  packetBuffer[0] = 0b11100011;   // LI, Version, Mode
+  packetBuffer[1] = 0;     // Stratum, or type of clock
+  packetBuffer[2] = 6;     // Polling Interval
+  packetBuffer[3] = 0xEC;  // Peer Clock Precision
+  // 8 bytes of zero for Root Delay & Root Dispersion
+  packetBuffer[12]  = 49;
+  packetBuffer[13]  = 0x4E;
+  packetBuffer[14]  = 49;
+  packetBuffer[15]  = 52;
+
+  // all NTP fields have been given values, now
+  // you can send a packet requesting a timestamp:
+  Udp.beginPacket(address, 123); //NTP requests are to port 123
+  Udp.write(packetBuffer, NTP_PACKET_SIZE);
+  Udp.endPacket();
+}
+
+
+
+
+
+
+
+
+
+

libraries/Ethernet2/examples/WebClient/WebClient.ino

@@ -0,0 +1,88 @@
+/*
+  Web client
+
+ This sketch connects to a website (http://www.google.com)
+ using an Arduino Wiznet Ethernet shield.
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+
+ created 18 Dec 2009
+ by David A. Mellis
+ modified 9 Apr 2012
+ by Tom Igoe, based on work by Adrian McEwen
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+
+// Enter a MAC address for your controller below.
+// Newer Ethernet shields have a MAC address printed on a sticker on the shield
+byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+// if you don't want to use DNS (and reduce your sketch size)
+// use the numeric IP instead of the name for the server:
+//IPAddress server(74,125,232,128);  // numeric IP for Google (no DNS)
+char server[] = "www.google.com";    // name address for Google (using DNS)
+
+// Set the static IP address to use if the DHCP fails to assign
+IPAddress ip(192, 168, 0, 177);
+
+// Initialize the Ethernet client library
+// with the IP address and port of the server
+// that you want to connect to (port 80 is default for HTTP):
+EthernetClient client;
+
+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 connection:
+  if (Ethernet.begin(mac) == 0) {
+    Serial.println("Failed to configure Ethernet using DHCP");
+    // no point in carrying on, so do nothing forevermore:
+    // try to congifure using IP address instead of DHCP:
+    Ethernet.begin(mac, ip);
+  }
+  // give the Ethernet shield a second to initialize:
+  delay(1000);
+  Serial.println("connecting...");
+
+  // if you get a connection, report back via serial:
+  if (client.connect(server, 80)) {
+    Serial.println("connected");
+    // Make a HTTP request:
+    client.println("GET /search?q=arduino HTTP/1.1");
+    client.println("Host: www.google.com");
+    client.println("Connection: close");
+    client.println();
+  }
+  else {
+    // kf you didn't get a connection to the server:
+    Serial.println("connection failed");
+  }
+}
+
+void loop()
+{
+  // if there are incoming bytes available
+  // from the server, read them and print them:
+  if (client.available()) {
+    char c = client.read();
+    Serial.print(c);
+  }
+
+  // if the server's disconnected, stop the client:
+  if (!client.connected()) {
+    Serial.println();
+    Serial.println("disconnecting.");
+    client.stop();
+
+    // do nothing forevermore:
+    while (true);
+  }
+}
+

libraries/Ethernet2/examples/WebClientRepeating/WebClientRepeating.ino

@@ -0,0 +1,108 @@
+/*
+  Repeating Web client
+
+ This sketch connects to a a web server and makes a request
+ using a Wiznet Ethernet shield. You can use the Arduino Ethernet shield, or
+ the Adafruit Ethernet shield, either one will work, as long as it's got
+ a Wiznet Ethernet module on board.
+
+ This example uses DNS, by assigning the Ethernet client with a MAC address,
+ IP address, and DNS address.
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+
+ created 19 Apr 2012
+ by Tom Igoe
+ modified 21 Jan 2014
+ by Federico Vanzati
+
+ http://arduino.cc/en/Tutorial/WebClientRepeating
+ This code is in the public domain.
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+
+// assign a MAC address for the ethernet controller.
+// fill in your address here:
+byte mac[] = {
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
+};
+// fill in an available IP address on your network here,
+// for manual configuration:
+IPAddress ip(192, 168, 1, 177);
+
+// fill in your Domain Name Server address here:
+IPAddress myDns(1, 1, 1, 1);
+
+// initialize the library instance:
+EthernetClient client;
+
+char server[] = "www.arduino.cc";
+//IPAddress server(64,131,82,241);
+
+unsigned long lastConnectionTime = 0;             // last time you connected to the server, in milliseconds
+const unsigned long postingInterval = 10L * 1000L; // delay between updates, in milliseconds
+// the "L" is needed to use long type numbers
+
+void setup() {
+  // start serial port:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for Leonardo only
+  }
+
+  // give the ethernet module time to boot up:
+  delay(1000);
+  // start the Ethernet connection using a fixed IP address and DNS server:
+  Ethernet.begin(mac, ip, myDns);
+  // print the Ethernet board/shield's IP address:
+  Serial.print("My IP address: ");
+  Serial.println(Ethernet.localIP());
+}
+
+void loop() {
+  // if there's incoming data from the net connection.
+  // send it out the serial port.  This is for debugging
+  // purposes only:
+  if (client.available()) {
+    char c = client.read();
+    Serial.write(c);
+  }
+
+  // if ten seconds have passed since your last connection,
+  // then connect again and send data:
+  if (millis() - lastConnectionTime > postingInterval) {
+    httpRequest();
+  }
+
+}
+
+// this method makes a HTTP connection to the server:
+void httpRequest() {
+  // close any connection before send a new request.
+  // This will free the socket on the WiFi shield
+  client.stop();
+
+  // if there's a successful connection:
+  if (client.connect(server, 80)) {
+    Serial.println("connecting...");
+    // send the HTTP PUT request:
+    client.println("GET /latest.txt HTTP/1.1");
+    client.println("Host: www.arduino.cc");
+    client.println("User-Agent: arduino-ethernet");
+    client.println("Connection: close");
+    client.println();
+
+    // note the time that the connection was made:
+    lastConnectionTime = millis();
+  }
+  else {
+    // if you couldn't make a connection:
+    Serial.println("connection failed");
+  }
+}
+
+

libraries/Ethernet2/examples/WebServer/WebServer.ino

@@ -0,0 +1,101 @@
+/*
+  Web Server
+
+ A simple web server that shows the value of the analog input pins.
+ using an Arduino Wiznet Ethernet shield.
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+ * Analog inputs attached to pins A0 through A5 (optional)
+
+ created 18 Dec 2009
+ by David A. Mellis
+ modified 9 Apr 2012
+ by Tom Igoe
+
+ */
+
+#include <SPI.h>
+#include <Ethernet2.h>
+
+// 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, 177);
+
+// Initialize the Ethernet server library
+// with the IP address and port you want to use
+// (port 80 is default for HTTP):
+EthernetServer server(80);
+
+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 connection and the server:
+  Ethernet.begin(mac, ip);
+  server.begin();
+  Serial.print("server is at ");
+  Serial.println(Ethernet.localIP());
+}
+
+
+void loop() {
+  // listen for incoming clients
+  EthernetClient client = server.available();
+  if (client) {
+    Serial.println("new client");
+    // an http request ends with a blank line
+    boolean currentLineIsBlank = true;
+    while (client.connected()) {
+      if (client.available()) {
+        char c = client.read();
+        Serial.write(c);
+        // if you've gotten to the end of the line (received a newline
+        // character) and the line is blank, the http request has ended,
+        // so you can send a reply
+        if (c == '\n' && currentLineIsBlank) {
+          // send a standard http response header
+          client.println("HTTP/1.1 200 OK");
+          client.println("Content-Type: text/html");
+          client.println("Connection: close");  // the connection will be closed after completion of the response
+          client.println("Refresh: 5");  // refresh the page automatically every 5 sec
+          client.println();
+          client.println("<!DOCTYPE HTML>");
+          client.println("<html>");
+          // output the value of each analog input pin
+          for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
+            int sensorReading = analogRead(analogChannel);
+            client.print("analog input ");
+            client.print(analogChannel);
+            client.print(" is ");
+            client.print(sensorReading);
+            client.println("<br />");
+          }
+          client.println("</html>");
+          break;
+        }
+        if (c == '\n') {
+          // you're starting a new line
+          currentLineIsBlank = true;
+        }
+        else if (c != '\r') {
+          // you've gotten a character on the current line
+          currentLineIsBlank = false;
+        }
+      }
+    }
+    // give the web browser time to receive the data
+    delay(1);
+    // close the connection:
+    client.stop();
+    Serial.println("client disconnected");
+  }
+}
+

libraries/Ethernet2/keywords.txt

@@ -0,0 +1,38 @@
+#######################################
+# Syntax Coloring Map For Ethernet
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+Ethernet2	KEYWORD1
+EthernetClient	KEYWORD1
+EthernetServer	KEYWORD1
+IPAddress	KEYWORD1
+EthernetUdp2	KEYWORD1
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+status	KEYWORD2
+connect	KEYWORD2
+write	KEYWORD2
+available	KEYWORD2
+read	KEYWORD2
+peek	KEYWORD2
+flush	KEYWORD2
+stop	KEYWORD2
+connected	KEYWORD2
+begin	KEYWORD2
+beginPacket	KEYWORD2
+endPacket	KEYWORD2
+parsePacket	KEYWORD2
+remoteIP	KEYWORD2
+remotePort	KEYWORD2
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+

libraries/Ethernet2/library.properties

@@ -0,0 +1,9 @@
+name=Ethernet2
+version=1.0.4
+author=Various
+maintainer=Adafruit <info@adafruit.com>
+sentence=Enables network connection (local and Internet) using W5500 based Ethernet shields.
+paragraph=With this library you can use W5500 based Ethernet shields, such as the 'Arduino Ethernet Shield v2' to connect to Internet, but not older W5100 based shields. The library provides both Client and server functionalities. The library permits you to connect to a local network also with DHCP and to resolve DNS.
+category=Communication
+url=https://github.com/adafruit/Ethernet2
+architectures=*

libraries/Ethernet2/license.txt

@@ -0,0 +1,753 @@
+this file includes licensing information for parts of arduino.
+
+first, the gnu general public license, which covers the main body 
+of the processing/arduino code (in general, all the stuff inside the 'app'
+and 'core' subfolders).
+
+next, the gnu lesser general public license that covers the arduino core
+and libraries.
+
+
+.....................................................................
+
+
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
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+    the Program is not required to print an announcement.)
+
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+conditions either of that version or of any later version published by
+the Free Software Foundation.  If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+
+  14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission.  For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this.  Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+			    NO WARRANTY
+
+  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+

libraries/Ethernet2/src/Dhcp.cpp

@@ -0,0 +1,518 @@
+// DHCP Library v0.3 - April 25, 2009
+// Author: Jordan Terrell - blog.jordanterrell.com
+
+#include "utility/w5500.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include "Dhcp.h"
+#include "Arduino.h"
+#include "utility/util.h"
+
+int DhcpClass::beginWithDHCP(uint8_t *mac, unsigned long timeout, unsigned long responseTimeout)
+{
+    _dhcpLeaseTime=0;
+    _dhcpT1=0;
+    _dhcpT2=0;
+    _lastCheck=0;
+    _timeout = timeout;
+    _responseTimeout = responseTimeout;
+
+    // zero out _dhcpMacAddr
+    memset(_dhcpMacAddr, 0, 6); 
+    reset_DHCP_lease();
+
+    memcpy((void*)_dhcpMacAddr, (void*)mac, 6);
+    _dhcp_state = STATE_DHCP_START;
+    return request_DHCP_lease();
+}
+
+void DhcpClass::reset_DHCP_lease(){
+    // zero out _dhcpSubnetMask, _dhcpGatewayIp, _dhcpLocalIp, _dhcpDhcpServerIp, _dhcpDnsServerIp
+    memset(_dhcpLocalIp, 0, 20);
+}
+
+//return:0 on error, 1 if request is sent and response is received
+int DhcpClass::request_DHCP_lease(){
+    
+    uint8_t messageType = 0;
+  
+    
+  
+    // Pick an initial transaction ID
+    _dhcpTransactionId = random(1UL, 2000UL);
+    _dhcpInitialTransactionId = _dhcpTransactionId;
+
+    _dhcpUdpSocket.stop();
+    if (_dhcpUdpSocket.begin(DHCP_CLIENT_PORT) == 0)
+    {
+      // Couldn't get a socket
+      return 0;
+    }
+    
+    presend_DHCP();
+    
+    int result = 0;
+    
+    unsigned long startTime = millis();
+    
+    while(_dhcp_state != STATE_DHCP_LEASED)
+    {
+        if(_dhcp_state == STATE_DHCP_START)
+        {
+            //Serial.println("DHCP_START");
+			_dhcpTransactionId++;
+            
+            send_DHCP_MESSAGE(DHCP_DISCOVER, ((millis() - startTime) / 1000));
+            _dhcp_state = STATE_DHCP_DISCOVER;
+        }
+        else if(_dhcp_state == STATE_DHCP_REREQUEST){
+            _dhcpTransactionId++;
+            send_DHCP_MESSAGE(DHCP_REQUEST, ((millis() - startTime)/1000));
+            _dhcp_state = STATE_DHCP_REQUEST;
+        }
+        else if(_dhcp_state == STATE_DHCP_DISCOVER)
+        {
+            uint32_t respId;
+			
+            messageType = parseDHCPResponse(_responseTimeout, respId);
+            if(messageType == DHCP_OFFER)
+            {
+                
+				// We'll use the transaction ID that the offer came with,
+                // rather than the one we were up to
+                _dhcpTransactionId = respId;
+                send_DHCP_MESSAGE(DHCP_REQUEST, ((millis() - startTime) / 1000));
+                _dhcp_state = STATE_DHCP_REQUEST;
+            }
+        }
+        else if(_dhcp_state == STATE_DHCP_REQUEST)
+        {
+            uint32_t respId;
+            messageType = parseDHCPResponse(_responseTimeout, respId);
+            if(messageType == DHCP_ACK)
+            {
+                _dhcp_state = STATE_DHCP_LEASED;
+                result = 1;
+                //use default lease time if we didn't get it
+                if(_dhcpLeaseTime == 0){
+                    _dhcpLeaseTime = DEFAULT_LEASE;
+                }
+                //calculate T1 & T2 if we didn't get it
+                if(_dhcpT1 == 0){
+                    //T1 should be 50% of _dhcpLeaseTime
+                    _dhcpT1 = _dhcpLeaseTime >> 1;
+                }
+                if(_dhcpT2 == 0){
+                    //T2 should be 87.5% (7/8ths) of _dhcpLeaseTime
+                    _dhcpT2 = _dhcpT1 << 1;
+                }
+                _renewInSec = _dhcpT1;
+                _rebindInSec = _dhcpT2;
+            }
+            else if(messageType == DHCP_NAK)
+                _dhcp_state = STATE_DHCP_START;
+        }
+        
+        if(messageType == 255)
+        {
+            messageType = 0;
+            _dhcp_state = STATE_DHCP_START;
+        }
+        
+        if(result != 1 && ((millis() - startTime) > _timeout))
+            break;
+    }
+    
+    // We're done with the socket now
+    _dhcpUdpSocket.stop();
+    _dhcpTransactionId++;
+
+    return result;
+}
+
+void DhcpClass::presend_DHCP()
+{
+}
+
+void DhcpClass::send_DHCP_MESSAGE(uint8_t messageType, uint16_t secondsElapsed)
+{
+    uint8_t buffer[32];
+    memset(buffer, 0, 32);
+    IPAddress dest_addr( 255, 255, 255, 255 ); // Broadcast address
+
+    if (-1 == _dhcpUdpSocket.beginPacket(dest_addr, DHCP_SERVER_PORT))
+    {
+        // FIXME Need to return errors
+        return;
+    }
+
+    buffer[0] = DHCP_BOOTREQUEST;   // op
+    buffer[1] = DHCP_HTYPE10MB;     // htype
+    buffer[2] = DHCP_HLENETHERNET;  // hlen
+    buffer[3] = DHCP_HOPS;          // hops
+
+    // xid
+    unsigned long xid = htonl(_dhcpTransactionId);
+    memcpy(buffer + 4, &(xid), 4);
+
+    // 8, 9 - seconds elapsed
+    buffer[8] = ((secondsElapsed & 0xff00) >> 8);
+    buffer[9] = (secondsElapsed & 0x00ff);
+
+    // flags
+    unsigned short flags = htons(DHCP_FLAGSBROADCAST);
+    memcpy(buffer + 10, &(flags), 2);
+
+    // ciaddr: already zeroed
+    // yiaddr: already zeroed
+    // siaddr: already zeroed
+    // giaddr: already zeroed
+
+    //put data in w5500 transmit buffer
+    _dhcpUdpSocket.write(buffer, 28);
+
+    memset(buffer, 0, 32); // clear local buffer
+
+    memcpy(buffer, _dhcpMacAddr, 6); // chaddr
+
+    //put data in w5500 transmit buffer
+    _dhcpUdpSocket.write(buffer, 16);
+
+    memset(buffer, 0, 32); // clear local buffer
+
+    // leave zeroed out for sname && file
+    // put in w5500 transmit buffer x 6 (192 bytes)
+  
+    for(int i = 0; i < 6; i++) {
+        _dhcpUdpSocket.write(buffer, 32);
+    }
+  
+    // OPT - Magic Cookie
+    buffer[0] = (uint8_t)((MAGIC_COOKIE >> 24)& 0xFF);
+    buffer[1] = (uint8_t)((MAGIC_COOKIE >> 16)& 0xFF);
+    buffer[2] = (uint8_t)((MAGIC_COOKIE >> 8)& 0xFF);
+    buffer[3] = (uint8_t)(MAGIC_COOKIE& 0xFF);
+
+    // OPT - message type
+    buffer[4] = dhcpMessageType;
+    buffer[5] = 0x01;
+    buffer[6] = messageType; //DHCP_REQUEST;
+
+    // OPT - client identifier
+    buffer[7] = dhcpClientIdentifier;
+    buffer[8] = 0x07;
+    buffer[9] = 0x01;
+    memcpy(buffer + 10, _dhcpMacAddr, 6);
+
+    // OPT - host name
+    buffer[16] = hostName;
+    buffer[17] = strlen(HOST_NAME) + 6; // length of hostname + last 3 bytes of mac address
+    strcpy((char*)&(buffer[18]), HOST_NAME);
+
+    printByte((char*)&(buffer[24]), _dhcpMacAddr[3]);
+    printByte((char*)&(buffer[26]), _dhcpMacAddr[4]);
+    printByte((char*)&(buffer[28]), _dhcpMacAddr[5]);
+
+    //put data in w5500 transmit buffer
+    _dhcpUdpSocket.write(buffer, 30);
+
+    if(messageType == DHCP_REQUEST)
+    {
+        buffer[0] = dhcpRequestedIPaddr;
+        buffer[1] = 0x04;
+        buffer[2] = _dhcpLocalIp[0];
+        buffer[3] = _dhcpLocalIp[1];
+        buffer[4] = _dhcpLocalIp[2];
+        buffer[5] = _dhcpLocalIp[3];
+
+        buffer[6] = dhcpServerIdentifier;
+        buffer[7] = 0x04;
+        buffer[8] = _dhcpDhcpServerIp[0];
+        buffer[9] = _dhcpDhcpServerIp[1];
+        buffer[10] = _dhcpDhcpServerIp[2];
+        buffer[11] = _dhcpDhcpServerIp[3];
+
+        //put data in w5500 transmit buffer
+        _dhcpUdpSocket.write(buffer, 12);
+    }
+    
+    buffer[0] = dhcpParamRequest;
+    buffer[1] = 0x06;
+    buffer[2] = subnetMask;
+    buffer[3] = routersOnSubnet;
+    buffer[4] = dns;
+    buffer[5] = domainName;
+    buffer[6] = dhcpT1value;
+    buffer[7] = dhcpT2value;
+    buffer[8] = endOption;
+    
+    //put data in w5500 transmit buffer
+    _dhcpUdpSocket.write(buffer, 9);
+
+    _dhcpUdpSocket.endPacket();
+}
+
+uint8_t DhcpClass::parseDHCPResponse(unsigned long responseTimeout, uint32_t& transactionId)
+{
+    uint8_t type = 0;
+    uint8_t opt_len = 0;
+	
+    unsigned long startTime = millis();
+    
+	
+	
+    while(_dhcpUdpSocket.parsePacket() <= 0)
+    {
+        if((millis() - startTime) > responseTimeout)
+        {
+            
+			return 255;
+        }
+        delay(50);
+    }
+	
+    // start reading in the packet
+    RIP_MSG_FIXED fixedMsg;
+    _dhcpUdpSocket.read((uint8_t*)&fixedMsg, sizeof(RIP_MSG_FIXED));
+  
+    if(fixedMsg.op == DHCP_BOOTREPLY && _dhcpUdpSocket.remotePort() == DHCP_SERVER_PORT)
+    {
+        transactionId = ntohl(fixedMsg.xid);
+        if(memcmp(fixedMsg.chaddr, _dhcpMacAddr, 6) != 0 || (transactionId < _dhcpInitialTransactionId) || (transactionId > _dhcpTransactionId))
+        {
+            // Need to read the rest of the packet here regardless
+            _dhcpUdpSocket.flush();
+            return 0;
+        }
+
+        memcpy(_dhcpLocalIp, fixedMsg.yiaddr, 4);
+
+        // Skip to the option part
+        // Doing this a byte at a time so we don't have to put a big buffer
+        // on the stack (as we don't have lots of memory lying around)
+        for (int i =0; i < (240 - (int)sizeof(RIP_MSG_FIXED)); i++)
+        {
+            _dhcpUdpSocket.read(); // we don't care about the returned byte
+        }
+
+        while (_dhcpUdpSocket.available() > 0) 
+        {
+            switch (_dhcpUdpSocket.read()) 
+            {
+                case endOption :
+                    
+					break;
+                    
+                case padOption :
+					 
+                    break;
+                
+                case dhcpMessageType :
+					 
+                    opt_len = _dhcpUdpSocket.read();
+                    type = _dhcpUdpSocket.read();
+                    break;
+                
+                case subnetMask :
+                    
+					opt_len = _dhcpUdpSocket.read();
+                    _dhcpUdpSocket.read(_dhcpSubnetMask, 4);
+                    break;
+                
+                case routersOnSubnet :
+                    
+					opt_len = _dhcpUdpSocket.read();
+                    _dhcpUdpSocket.read(_dhcpGatewayIp, 4);
+                    for (int i = 0; i < opt_len-4; i++)
+                    {
+                        _dhcpUdpSocket.read();
+                    }
+                    break;
+                
+                case dns :
+					opt_len = _dhcpUdpSocket.read();
+                    _dhcpUdpSocket.read(_dhcpDnsServerIp, 4);
+                    for (int i = 0; i < opt_len-4; i++)
+                    {
+                        _dhcpUdpSocket.read();
+                    }
+                    break;
+                    
+                case domainName:
+                    opt_len = _dhcpUdpSocket.read();
+                    _dhcpDnsdomainName = (char*)malloc(sizeof(char)*opt_len+1);
+                    _dhcpUdpSocket.read(_dhcpDnsdomainName, opt_len);
+                    _dhcpDnsdomainName[opt_len] = '\0';
+                    break;
+                case hostName:
+                    opt_len = _dhcpUdpSocket.read();
+                    _dhcpHostName = (char*)malloc(sizeof(char)*opt_len+1);
+                    _dhcpUdpSocket.read(_dhcpHostName, opt_len);
+                    _dhcpHostName[opt_len] = '\0';
+                    break;
+                case dhcpServerIdentifier :
+                    
+					opt_len = _dhcpUdpSocket.read();
+                    if(((_dhcpDhcpServerIp[0] == 0) && (_dhcpDhcpServerIp[1] == 0) && (_dhcpDhcpServerIp[2] == 0) && (_dhcpDhcpServerIp[3] == 0))  || (IPAddress(_dhcpDhcpServerIp) == _dhcpUdpSocket.remoteIP())) 
+                    {
+                        _dhcpUdpSocket.read(_dhcpDhcpServerIp, sizeof(_dhcpDhcpServerIp));
+                    }
+                    else
+                    {
+                        // Skip over the rest of this option
+                        while (opt_len--)
+                        {
+                            _dhcpUdpSocket.read();
+                        }
+                    }
+                    break;
+
+                case dhcpT1value : 
+                    
+					opt_len = _dhcpUdpSocket.read();
+                    _dhcpUdpSocket.read((uint8_t*)&_dhcpT1, sizeof(_dhcpT1));
+                    _dhcpT1 = ntohl(_dhcpT1);
+                    break;
+
+                case dhcpT2value : 
+                    
+					opt_len = _dhcpUdpSocket.read();
+                    _dhcpUdpSocket.read((uint8_t*)&_dhcpT2, sizeof(_dhcpT2));
+                    _dhcpT2 = ntohl(_dhcpT2);
+                    break;
+
+                case dhcpIPaddrLeaseTime :
+                    
+					opt_len = _dhcpUdpSocket.read();
+                    _dhcpUdpSocket.read((uint8_t*)&_dhcpLeaseTime, sizeof(_dhcpLeaseTime));
+                    _dhcpLeaseTime = ntohl(_dhcpLeaseTime);
+                    _renewInSec = _dhcpLeaseTime;
+                    break;
+
+                default :
+                    
+					opt_len = _dhcpUdpSocket.read();
+                    // Skip over the rest of this option
+                    while (opt_len--)
+                    {
+                        _dhcpUdpSocket.read();
+                    }
+                    break;
+            }
+        }
+    }
+
+    // Need to skip to end of the packet regardless here
+    _dhcpUdpSocket.flush();
+
+    return type;
+}
+
+
+/*
+    returns:
+    0/DHCP_CHECK_NONE: nothing happened
+    1/DHCP_CHECK_RENEW_FAIL: renew failed
+    2/DHCP_CHECK_RENEW_OK: renew success
+    3/DHCP_CHECK_REBIND_FAIL: rebind fail
+    4/DHCP_CHECK_REBIND_OK: rebind success
+*/
+int DhcpClass::checkLease(){
+    //this uses a signed / unsigned trick to deal with millis overflow
+    unsigned long now = millis();
+    signed long snow = (long)now;
+    int rc=DHCP_CHECK_NONE;
+    if (_lastCheck != 0){
+        signed long factor;
+        //calc how many ms past the timeout we are
+        factor = snow - (long)_secTimeout;
+        //if on or passed the timeout, reduce the counters
+        if ( factor >= 0 ){
+            //next timeout should be now plus 1000 ms minus parts of second in factor
+            _secTimeout = snow + 1000 - factor % 1000;
+            //how many seconds late are we, minimum 1
+            factor = factor / 1000 +1;
+            
+            //reduce the counters by that mouch
+            //if we can assume that the cycle time (factor) is fairly constant
+            //and if the remainder is less than cycle time * 2 
+            //do it early instead of late
+            if(_renewInSec < factor*2 )
+                _renewInSec = 0;
+            else
+                _renewInSec -= factor;
+            
+            if(_rebindInSec < factor*2 )
+                _rebindInSec = 0;
+            else
+                _rebindInSec -= factor;
+        }
+
+        //if we have a lease but should renew, do it
+        if (_dhcp_state == STATE_DHCP_LEASED && _renewInSec <=0){
+            _dhcp_state = STATE_DHCP_REREQUEST;
+            rc = 1 + request_DHCP_lease();
+        }
+
+        //if we have a lease or is renewing but should bind, do it
+        if( (_dhcp_state == STATE_DHCP_LEASED || _dhcp_state == STATE_DHCP_START) && _rebindInSec <=0){
+            //this should basically restart completely
+            _dhcp_state = STATE_DHCP_START;
+            reset_DHCP_lease();
+            rc = 3 + request_DHCP_lease();
+        }
+    }
+    else{
+        _secTimeout = snow + 1000;
+    }
+
+    _lastCheck = now;
+    return rc;
+}
+
+IPAddress DhcpClass::getLocalIp()
+{
+    return IPAddress(_dhcpLocalIp);
+}
+
+IPAddress DhcpClass::getSubnetMask()
+{
+    return IPAddress(_dhcpSubnetMask);
+}
+
+IPAddress DhcpClass::getGatewayIp()
+{
+    return IPAddress(_dhcpGatewayIp);
+}
+
+IPAddress DhcpClass::getDhcpServerIp()
+{
+    return IPAddress(_dhcpDhcpServerIp);
+}
+
+IPAddress DhcpClass::getDnsServerIp()
+{
+    return IPAddress(_dhcpDnsServerIp);
+}
+
+char* DhcpClass::getDnsDomainName()
+{
+    return _dhcpDnsdomainName;
+}
+
+char* DhcpClass::getHostName()
+{
+    return _dhcpHostName;
+}
+
+void DhcpClass::printByte(char * buf, uint8_t n ) {
+  char *str = &buf[1];
+  buf[0]='0';
+  do {
+    unsigned long m = n;
+    n /= 16;
+    char c = m - 16 * n;
+    *str-- = c < 10 ? c + '0' : c + 'A' - 10;
+  } while(n);
+}

libraries/Ethernet2/src/Dhcp.h

@@ -0,0 +1,182 @@
+// DHCP Library v0.3 - April 25, 2009
+// Author: Jordan Terrell - blog.jordanterrell.com
+
+#ifndef Dhcp_h
+#define Dhcp_h
+
+#include "EthernetUdp2.h"
+
+/* DHCP state machine. */
+#define STATE_DHCP_START 0
+#define	STATE_DHCP_DISCOVER	1
+#define	STATE_DHCP_REQUEST	2
+#define	STATE_DHCP_LEASED	3
+#define	STATE_DHCP_REREQUEST	4
+#define	STATE_DHCP_RELEASE	5
+
+#define DHCP_FLAGSBROADCAST	0x8000
+
+/* UDP port numbers for DHCP */
+#define	DHCP_SERVER_PORT	67	/* from server to client */
+#define DHCP_CLIENT_PORT	68	/* from client to server */
+
+/* DHCP message OP code */
+#define DHCP_BOOTREQUEST	1
+#define DHCP_BOOTREPLY		2
+
+/* DHCP message type */
+#define	DHCP_DISCOVER		1
+#define DHCP_OFFER		  2
+#define	DHCP_REQUEST		3
+#define	DHCP_DECLINE		4
+#define	DHCP_ACK		    5
+#define DHCP_NAK		    6
+#define	DHCP_RELEASE		7
+#define DHCP_INFORM		  8
+
+#define DHCP_HTYPE10MB		1
+#define DHCP_HTYPE100MB		2
+
+#define DHCP_HLENETHERNET	6
+#define DHCP_HOPS		0
+#define DHCP_SECS		0
+
+#define MAGIC_COOKIE		0x63825363
+#define MAX_DHCP_OPT	16
+
+#define HOST_NAME "WIZnet"
+#define DEFAULT_LEASE	(900) //default lease time in seconds
+
+#define DHCP_CHECK_NONE         (0)
+#define DHCP_CHECK_RENEW_FAIL   (1)
+#define DHCP_CHECK_RENEW_OK     (2)
+#define DHCP_CHECK_REBIND_FAIL  (3)
+#define DHCP_CHECK_REBIND_OK    (4)
+
+enum
+{
+	padOption		=	0,
+	subnetMask		=	1,
+	timerOffset		=	2,
+	routersOnSubnet		=	3,
+	/* timeServer		=	4,
+	nameServer		=	5,*/
+	dns			=	6,
+	/*logServer		=	7,
+	cookieServer		=	8,
+	lprServer		=	9,
+	impressServer		=	10,
+	resourceLocationServer	=	11,*/
+	hostName		=	12,
+	/*bootFileSize		=	13,
+	meritDumpFile		=	14,*/
+	domainName		=	15,
+	/*swapServer		=	16,
+	rootPath		=	17,
+	extentionsPath		=	18,
+	IPforwarding		=	19,
+	nonLocalSourceRouting	=	20,
+	policyFilter		=	21,
+	maxDgramReasmSize	=	22,
+	defaultIPTTL		=	23,
+	pathMTUagingTimeout	=	24,
+	pathMTUplateauTable	=	25,
+	ifMTU			=	26,
+	allSubnetsLocal		=	27,
+	broadcastAddr		=	28,
+	performMaskDiscovery	=	29,
+	maskSupplier		=	30,
+	performRouterDiscovery	=	31,
+	routerSolicitationAddr	=	32,
+	staticRoute		=	33,
+	trailerEncapsulation	=	34,
+	arpCacheTimeout		=	35,
+	ethernetEncapsulation	=	36,
+	tcpDefaultTTL		=	37,
+	tcpKeepaliveInterval	=	38,
+	tcpKeepaliveGarbage	=	39,
+	nisDomainName		=	40,
+	nisServers		=	41,
+	ntpServers		=	42,
+	vendorSpecificInfo	=	43,
+	netBIOSnameServer	=	44,
+	netBIOSdgramDistServer	=	45,
+	netBIOSnodeType		=	46,
+	netBIOSscope		=	47,
+	xFontServer		=	48,
+	xDisplayManager		=	49,*/
+	dhcpRequestedIPaddr	=	50,
+	dhcpIPaddrLeaseTime	=	51,
+	/*dhcpOptionOverload	=	52,*/
+	dhcpMessageType		=	53,
+	dhcpServerIdentifier	=	54,
+	dhcpParamRequest	=	55,
+	/*dhcpMsg			=	56,
+	dhcpMaxMsgSize		=	57,*/
+	dhcpT1value		=	58,
+	dhcpT2value		=	59,
+	/*dhcpClassIdentifier	=	60,*/
+	dhcpClientIdentifier	=	61,
+	endOption		=	255
+};
+
+typedef struct _RIP_MSG_FIXED
+{
+	uint8_t  op; 
+	uint8_t  htype; 
+	uint8_t  hlen;
+	uint8_t  hops;
+	uint32_t xid;
+	uint16_t secs;
+	uint16_t flags;
+	uint8_t  ciaddr[4];
+	uint8_t  yiaddr[4];
+	uint8_t  siaddr[4];
+	uint8_t  giaddr[4];
+	uint8_t  chaddr[6];
+}RIP_MSG_FIXED;
+
+class DhcpClass {
+
+private:
+  uint32_t _dhcpInitialTransactionId;
+  uint32_t _dhcpTransactionId;
+  uint8_t  _dhcpMacAddr[6];
+  uint8_t  _dhcpLocalIp[4];
+  char* _dhcpDnsdomainName;
+  char* _dhcpHostName;
+  uint8_t  _dhcpSubnetMask[4];
+  uint8_t  _dhcpGatewayIp[4];
+  uint8_t  _dhcpDhcpServerIp[4];
+  uint8_t  _dhcpDnsServerIp[4];
+  uint32_t _dhcpLeaseTime;
+  uint32_t _dhcpT1, _dhcpT2;
+  signed long _renewInSec;
+  signed long _rebindInSec;
+  signed long _lastCheck;
+  unsigned long _timeout;
+  unsigned long _responseTimeout;
+  unsigned long _secTimeout;
+  uint8_t _dhcp_state;
+  EthernetUDP _dhcpUdpSocket;
+  int request_DHCP_lease();
+  void reset_DHCP_lease();
+  void presend_DHCP();
+  void send_DHCP_MESSAGE(uint8_t, uint16_t);
+  void printByte(char *, uint8_t);
+  
+  uint8_t parseDHCPResponse(unsigned long responseTimeout, uint32_t& transactionId);
+public:
+  IPAddress getLocalIp();
+  IPAddress getSubnetMask();
+  IPAddress getGatewayIp();
+  IPAddress getDhcpServerIp();
+  IPAddress getDnsServerIp();
+  char* getDnsDomainName();
+  char* getHostName();
+  
+  int beginWithDHCP(uint8_t *, unsigned long timeout = 60000, unsigned long responseTimeout = 5000);  
+  int checkLease();
+};
+
+#endif

libraries/Ethernet2/src/Dns.cpp

@@ -0,0 +1,423 @@
+// Arduino DNS client for WizNet5100-based Ethernet shield
+// (c) Copyright 2009-2010 MCQN Ltd.
+// Released under Apache License, version 2.0
+
+#include "utility/w5500.h"
+#include "EthernetUdp2.h"
+#include "utility/util.h"
+
+#include "Dns.h"
+#include <string.h>
+//#include <stdlib.h>
+#include "Arduino.h"
+
+
+#define SOCKET_NONE	255
+// Various flags and header field values for a DNS message
+#define UDP_HEADER_SIZE	8
+#define DNS_HEADER_SIZE	12
+#define TTL_SIZE        4
+#define QUERY_FLAG               (0)
+#define RESPONSE_FLAG            (1<<15)
+#define QUERY_RESPONSE_MASK      (1<<15)
+#define OPCODE_STANDARD_QUERY    (0)
+#define OPCODE_INVERSE_QUERY     (1<<11)
+#define OPCODE_STATUS_REQUEST    (2<<11)
+#define OPCODE_MASK              (15<<11)
+#define AUTHORITATIVE_FLAG       (1<<10)
+#define TRUNCATION_FLAG          (1<<9)
+#define RECURSION_DESIRED_FLAG   (1<<8)
+#define RECURSION_AVAILABLE_FLAG (1<<7)
+#define RESP_NO_ERROR            (0)
+#define RESP_FORMAT_ERROR        (1)
+#define RESP_SERVER_FAILURE      (2)
+#define RESP_NAME_ERROR          (3)
+#define RESP_NOT_IMPLEMENTED     (4)
+#define RESP_REFUSED             (5)
+#define RESP_MASK                (15)
+#define TYPE_A                   (0x0001)
+#define CLASS_IN                 (0x0001)
+#define LABEL_COMPRESSION_MASK   (0xC0)
+// Port number that DNS servers listen on
+#define DNS_PORT        53
+
+// Possible return codes from ProcessResponse
+#define SUCCESS          1
+#define TIMED_OUT        -1
+#define INVALID_SERVER   -2
+#define TRUNCATED        -3
+#define INVALID_RESPONSE -4
+
+void DNSClient::begin(const IPAddress& aDNSServer)
+{
+    iDNSServer = aDNSServer;
+    iRequestId = 0;
+}
+
+
+int DNSClient::inet_aton(const char* aIPAddrString, IPAddress& aResult)
+{
+    // See if we've been given a valid IP address
+    const char* p =aIPAddrString;
+    while (*p &&
+           ( (*p == '.') || (*p >= '0') || (*p <= '9') ))
+    {
+        p++;
+    }
+
+    if (*p == '\0')
+    {
+        // It's looking promising, we haven't found any invalid characters
+        p = aIPAddrString;
+        int segment =0;
+        int segmentValue =0;
+        while (*p && (segment < 4))
+        {
+            if (*p == '.')
+            {
+                // We've reached the end of a segment
+                if (segmentValue > 255)
+                {
+                    // You can't have IP address segments that don't fit in a byte
+                    return 0;
+                }
+                else
+                {
+                    aResult[segment] = (byte)segmentValue;
+                    segment++;
+                    segmentValue = 0;
+                }
+            }
+            else
+            {
+                // Next digit
+                segmentValue = (segmentValue*10)+(*p - '0');
+            }
+            p++;
+        }
+        // We've reached the end of address, but there'll still be the last
+        // segment to deal with
+        if ((segmentValue > 255) || (segment > 3))
+        {
+            // You can't have IP address segments that don't fit in a byte,
+            // or more than four segments
+            return 0;
+        }
+        else
+        {
+            aResult[segment] = (byte)segmentValue;
+            return 1;
+        }
+    }
+    else
+    {
+        return 0;
+    }
+}
+
+int DNSClient::getHostByName(const char* aHostname, IPAddress& aResult)
+{
+    int ret =0;
+
+    // See if it's a numeric IP address
+    if (inet_aton(aHostname, aResult))
+    {
+        // It is, our work here is done
+        return 1;
+    }
+
+    // Check we've got a valid DNS server to use
+    if (iDNSServer == INADDR_NONE)
+    {
+        return INVALID_SERVER;
+    }
+	
+    // Find a socket to use
+    if (iUdp.begin(1024+(millis() & 0xF)) == 1)
+    {
+        // Try up to three times
+        int retries = 0;
+//        while ((retries < 3) && (ret <= 0))
+        {
+            // Send DNS request
+            ret = iUdp.beginPacket(iDNSServer, DNS_PORT);
+            if (ret != 0)
+            {
+                // Now output the request data
+                ret = BuildRequest(aHostname);
+                if (ret != 0)
+                {
+                    // And finally send the request
+                    ret = iUdp.endPacket();
+                    if (ret != 0)
+                    {
+                        // Now wait for a response
+                        int wait_retries = 0;
+                        ret = TIMED_OUT;
+                        while ((wait_retries < 3) && (ret == TIMED_OUT))
+                        {
+                            ret = ProcessResponse(5000, aResult);
+                            wait_retries++;
+                        }
+                    }
+                }
+            }
+            retries++;
+        }
+
+        // We're done with the socket now
+        iUdp.stop();
+    }
+
+    return ret;
+}
+
+uint16_t DNSClient::BuildRequest(const char* aName)
+{
+    // Build header
+    //                                    1  1  1  1  1  1
+    //      0  1  2  3  4  5  6  7  8  9  0  1  2  3  4  5
+    //    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    //    |                      ID                       |
+    //    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    //    |QR|   Opcode  |AA|TC|RD|RA|   Z    |   RCODE   |
+    //    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    //    |                    QDCOUNT                    |
+    //    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    //    |                    ANCOUNT                    |
+    //    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    //    |                    NSCOUNT                    |
+    //    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    //    |                    ARCOUNT                    |
+    //    +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
+    // As we only support one request at a time at present, we can simplify
+    // some of this header
+    iRequestId = millis(); // generate a random ID
+    uint16_t twoByteBuffer;
+
+    // FIXME We should also check that there's enough space available to write to, rather
+    // FIXME than assume there's enough space (as the code does at present)
+    iUdp.write((uint8_t*)&iRequestId, sizeof(iRequestId));
+
+    twoByteBuffer = htons(QUERY_FLAG | OPCODE_STANDARD_QUERY | RECURSION_DESIRED_FLAG);
+    iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
+
+    twoByteBuffer = htons(1);  // One question record
+    iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
+
+    twoByteBuffer = 0;  // Zero answer records
+    iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
+
+    iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
+    // and zero additional records
+    iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
+
+    // Build question
+    const char* start =aName;
+    const char* end =start;
+    uint8_t len;
+    // Run through the name being requested
+    while (*end)
+    {
+        // Find out how long this section of the name is
+        end = start;
+        while (*end && (*end != '.') )
+        {
+            end++;
+        }
+
+        if (end-start > 0)
+        {
+            // Write out the size of this section
+            len = end-start;
+            iUdp.write(&len, sizeof(len));
+            // And then write out the section
+            iUdp.write((uint8_t*)start, end-start);
+        }
+        start = end+1;
+    }
+
+    // We've got to the end of the question name, so
+    // terminate it with a zero-length section
+    len = 0;
+    iUdp.write(&len, sizeof(len));
+    // Finally the type and class of question
+    twoByteBuffer = htons(TYPE_A);
+    iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
+
+    twoByteBuffer = htons(CLASS_IN);  // Internet class of question
+    iUdp.write((uint8_t*)&twoByteBuffer, sizeof(twoByteBuffer));
+    // Success!  Everything buffered okay
+    return 1;
+}
+
+
+uint16_t DNSClient::ProcessResponse(uint16_t aTimeout, IPAddress& aAddress)
+{
+    uint32_t startTime = millis();
+
+    // Wait for a response packet
+    while(iUdp.parsePacket() <= 0)
+    {
+        if((millis() - startTime) > aTimeout)
+            return TIMED_OUT;
+        delay(50);
+    }
+
+    // We've had a reply!
+    // Read the UDP header
+    uint8_t header[DNS_HEADER_SIZE]; // Enough space to reuse for the DNS header
+    // Check that it's a response from the right server and the right port
+    if ( (iDNSServer != iUdp.remoteIP()) || 
+        (iUdp.remotePort() != DNS_PORT) )
+    {
+        // It's not from who we expected
+        return INVALID_SERVER;
+    }
+
+    // Read through the rest of the response
+    if (iUdp.available() < DNS_HEADER_SIZE)
+    {
+        return TRUNCATED;
+    }
+    iUdp.read(header, DNS_HEADER_SIZE);
+
+    uint16_t header_flags = htons(*((uint16_t*)&header[2]));
+    // Check that it's a response to this request
+    if ( ( iRequestId != (*((uint16_t*)&header[0])) ) ||
+        ((header_flags & QUERY_RESPONSE_MASK) != (uint16_t)RESPONSE_FLAG) )
+    {
+        // Mark the entire packet as read
+        iUdp.flush();
+        return INVALID_RESPONSE;
+    }
+    // Check for any errors in the response (or in our request)
+    // although we don't do anything to get round these
+    if ( (header_flags & TRUNCATION_FLAG) || (header_flags & RESP_MASK) )
+    {
+        // Mark the entire packet as read
+        iUdp.flush();
+        return -5; //INVALID_RESPONSE;
+    }
+
+    // And make sure we've got (at least) one answer
+    uint16_t answerCount = htons(*((uint16_t*)&header[6]));
+    if (answerCount == 0 )
+    {
+        // Mark the entire packet as read
+        iUdp.flush();
+        return -6; //INVALID_RESPONSE;
+    }
+
+    // Skip over any questions
+    for (uint16_t i =0; i < htons(*((uint16_t*)&header[4])); i++)
+    {
+        // Skip over the name
+        uint8_t len;
+        do
+        {
+            iUdp.read(&len, sizeof(len));
+            if (len > 0)
+            {
+                // Don't need to actually read the data out for the string, just
+                // advance ptr to beyond it
+                while(len--)
+                {
+                    iUdp.read(); // we don't care about the returned byte
+                }
+            }
+        } while (len != 0);
+
+        // Now jump over the type and class
+        for (int i =0; i < 4; i++)
+        {
+            iUdp.read(); // we don't care about the returned byte
+        }
+    }
+
+    // Now we're up to the bit we're interested in, the answer
+    // There might be more than one answer (although we'll just use the first
+    // type A answer) and some authority and additional resource records but
+    // we're going to ignore all of them.
+
+    for (uint16_t i =0; i < answerCount; i++)
+    {
+        // Skip the name
+        uint8_t len;
+        do
+        {
+            iUdp.read(&len, sizeof(len));
+            if ((len & LABEL_COMPRESSION_MASK) == 0)
+            {
+                // It's just a normal label
+                if (len > 0)
+                {
+                    // And it's got a length
+                    // Don't need to actually read the data out for the string,
+                    // just advance ptr to beyond it
+                    while(len--)
+                    {
+                        iUdp.read(); // we don't care about the returned byte
+                    }
+                }
+            }
+            else
+            {
+                // This is a pointer to a somewhere else in the message for the
+                // rest of the name.  We don't care about the name, and RFC1035
+                // says that a name is either a sequence of labels ended with a
+                // 0 length octet or a pointer or a sequence of labels ending in
+                // a pointer.  Either way, when we get here we're at the end of
+                // the name
+                // Skip over the pointer
+                iUdp.read(); // we don't care about the returned byte
+                // And set len so that we drop out of the name loop
+                len = 0;
+            }
+        } while (len != 0);
+
+        // Check the type and class
+        uint16_t answerType;
+        uint16_t answerClass;
+        iUdp.read((uint8_t*)&answerType, sizeof(answerType));
+        iUdp.read((uint8_t*)&answerClass, sizeof(answerClass));
+
+        // Ignore the Time-To-Live as we don't do any caching
+        for (int i =0; i < TTL_SIZE; i++)
+        {
+            iUdp.read(); // we don't care about the returned byte
+        }
+
+        // And read out the length of this answer
+        // Don't need header_flags anymore, so we can reuse it here
+        iUdp.read((uint8_t*)&header_flags, sizeof(header_flags));
+
+        if ( (htons(answerType) == TYPE_A) && (htons(answerClass) == CLASS_IN) )
+        {
+            if (htons(header_flags) != 4)
+            {
+                // It's a weird size
+                // Mark the entire packet as read
+                iUdp.flush();
+                return -9;//INVALID_RESPONSE;
+            }
+            iUdp.read(aAddress.raw_address(), 4);
+            return SUCCESS;
+        }
+        else
+        {
+            // This isn't an answer type we're after, move onto the next one
+            for (uint16_t i =0; i < htons(header_flags); i++)
+            {
+                iUdp.read(); // we don't care about the returned byte
+            }
+        }
+    }
+
+    // Mark the entire packet as read
+    iUdp.flush();
+
+    // If we get here then we haven't found an answer
+    return -10;//INVALID_RESPONSE;
+}
+

libraries/Ethernet2/src/Dns.h

@@ -0,0 +1,41 @@
+// Arduino DNS client for WizNet5100-based Ethernet shield
+// (c) Copyright 2009-2010 MCQN Ltd.
+// Released under Apache License, version 2.0
+
+#ifndef DNSClient_h
+#define DNSClient_h
+
+#include <EthernetUdp2.h>
+
+class DNSClient
+{
+public:
+    // ctor
+    void begin(const IPAddress& aDNSServer);
+
+    /** Convert a numeric IP address string into a four-byte IP address.
+        @param aIPAddrString IP address to convert
+        @param aResult IPAddress structure to store the returned IP address
+        @result 1 if aIPAddrString was successfully converted to an IP address,
+                else error code
+    */
+    int inet_aton(const char *aIPAddrString, IPAddress& aResult);
+
+    /** Resolve the given hostname to an IP address.
+        @param aHostname Name to be resolved
+        @param aResult IPAddress structure to store the returned IP address
+        @result 1 if aIPAddrString was successfully converted to an IP address,
+                else error code
+    */
+    int getHostByName(const char* aHostname, IPAddress& aResult);
+
+protected:
+    uint16_t BuildRequest(const char* aName);
+    uint16_t ProcessResponse(uint16_t aTimeout, IPAddress& aAddress);
+
+    IPAddress iDNSServer;
+    uint16_t iRequestId;
+    EthernetUDP iUdp;
+};
+
+#endif

libraries/Ethernet2/src/Ethernet2.cpp

@@ -0,0 +1,209 @@
+/*
+ modified 12 Aug 2013
+ by Soohwan Kim (suhwan@wiznet.co.kr)
+
+- 10 Apr. 2015
+ Added support for Arduino Ethernet Shield 2
+ by Arduino.org team
+
+ */
+ 
+#include "Ethernet2.h"
+#include "Dhcp.h"
+
+// XXX: don't make assumptions about the value of MAX_SOCK_NUM.
+uint8_t EthernetClass::_state[MAX_SOCK_NUM] = { 0, };
+uint16_t EthernetClass::_server_port[MAX_SOCK_NUM] = { 0, };
+
+
+
+#if defined(WIZ550io_WITH_MACADDRESS)
+int EthernetClass::begin(void)
+{
+  byte mac_address[6] ={0,};
+  if (_dhcp != NULL) {
+    delete _dhcp;
+  }
+  _dhcp = new DhcpClass();
+
+  // Initialise the basic info
+  w5500.init(w5500_cspin);
+  w5500.setIPAddress(IPAddress(0,0,0,0).raw_address());
+  w5500.getMACAddress(mac_address);
+  
+  // Now try to get our config info from a DHCP server
+  int ret = _dhcp->beginWithDHCP(mac_address);
+  if(ret == 1)
+  {
+    // We've successfully found a DHCP server and got our configuration info, so set things
+    // accordingly
+    w5500.setIPAddress(_dhcp->getLocalIp().raw_address());
+    w5500.setGatewayIp(_dhcp->getGatewayIp().raw_address());
+    w5500.setSubnetMask(_dhcp->getSubnetMask().raw_address());
+    _dnsServerAddress = _dhcp->getDnsServerIp();
+    _dnsDomainName = _dhcp->getDnsDomainName();
+    _hostName = _dhcp->getHostName();
+  }
+
+  return ret;
+}
+
+void EthernetClass::begin(IPAddress local_ip)
+{
+  // Assume the DNS server will be the machine on the same network as the local IP
+  // but with last octet being '1'
+  IPAddress dns_server = local_ip;
+  dns_server[3] = 1;
+  begin(local_ip, dns_server);
+}
+
+void EthernetClass::begin(IPAddress local_ip, IPAddress dns_server)
+{
+  // Assume the gateway will be the machine on the same network as the local IP
+  // but with last octet being '1'
+  IPAddress gateway = local_ip;
+  gateway[3] = 1;
+  begin(local_ip, dns_server, gateway);
+}
+
+void EthernetClass::begin(IPAddress local_ip, IPAddress dns_server, IPAddress gateway)
+{
+  IPAddress subnet(255, 255, 255, 0);
+  begin(local_ip, dns_server, gateway, subnet);
+}
+
+void EthernetClass::begin(IPAddress local_ip, IPAddress dns_server, IPAddress gateway, IPAddress subnet)
+{
+  w5500.init(w5500_cspin);
+  w5500.setIPAddress(local_ip.raw_address());
+  w5500.setGatewayIp(gateway.raw_address());
+  w5500.setSubnetMask(subnet.raw_address());
+  _dnsServerAddress = dns_server;
+}
+#else
+int EthernetClass::begin(uint8_t *mac_address)
+{
+   if (_dhcp != NULL) {
+     delete _dhcp;
+   }
+  _dhcp = new DhcpClass();
+  // Initialise the basic info
+  w5500.init(w5500_cspin);
+  w5500.setMACAddress(mac_address);
+  w5500.setIPAddress(IPAddress(0,0,0,0).raw_address());
+
+  // Now try to get our config info from a DHCP server
+  int ret = _dhcp->beginWithDHCP(mac_address);
+  if(ret == 1)
+  {
+    // We've successfully found a DHCP server and got our configuration info, so set things
+    // accordingly
+    w5500.setIPAddress(_dhcp->getLocalIp().raw_address());
+    w5500.setGatewayIp(_dhcp->getGatewayIp().raw_address());
+    w5500.setSubnetMask(_dhcp->getSubnetMask().raw_address());
+    _dnsServerAddress = _dhcp->getDnsServerIp();
+    _dnsDomainName = _dhcp->getDnsDomainName();
+    _hostName = _dhcp->getHostName();
+  }
+
+  return ret;
+}
+
+void EthernetClass::begin(uint8_t *mac_address, IPAddress local_ip)
+{
+  // Assume the DNS server will be the machine on the same network as the local IP
+  // but with last octet being '1'
+  IPAddress dns_server = local_ip;
+  dns_server[3] = 1;
+  begin(mac_address, local_ip, dns_server);
+}
+
+void EthernetClass::begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server)
+{
+  // Assume the gateway will be the machine on the same network as the local IP
+  // but with last octet being '1'
+  IPAddress gateway = local_ip;
+  gateway[3] = 1;
+  begin(mac_address, local_ip, dns_server, gateway);
+}
+
+void EthernetClass::begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server, IPAddress gateway)
+{
+  IPAddress subnet(255, 255, 255, 0);
+  begin(mac_address, local_ip, dns_server, gateway, subnet);
+}
+
+void EthernetClass::begin(uint8_t *mac, IPAddress local_ip, IPAddress dns_server, IPAddress gateway, IPAddress subnet)
+{
+  w5500.init(w5500_cspin);
+  w5500.setMACAddress(mac);
+  w5500.setIPAddress(local_ip.raw_address());
+  w5500.setGatewayIp(gateway.raw_address());
+  w5500.setSubnetMask(subnet.raw_address());
+  _dnsServerAddress = dns_server;
+}
+
+#endif
+
+int EthernetClass::maintain(){
+  int rc = DHCP_CHECK_NONE;
+  if(_dhcp != NULL){
+    //we have a pointer to dhcp, use it
+    rc = _dhcp->checkLease();
+    switch ( rc ){
+      case DHCP_CHECK_NONE:
+        //nothing done
+        break;
+      case DHCP_CHECK_RENEW_OK:
+      case DHCP_CHECK_REBIND_OK:
+        //we might have got a new IP.
+        w5500.setIPAddress(_dhcp->getLocalIp().raw_address());
+        w5500.setGatewayIp(_dhcp->getGatewayIp().raw_address());
+        w5500.setSubnetMask(_dhcp->getSubnetMask().raw_address());
+        _dnsServerAddress = _dhcp->getDnsServerIp();
+        _dnsDomainName = _dhcp->getDnsDomainName();
+        _hostName = _dhcp->getHostName();
+        break;
+      default:
+        //this is actually a error, it will retry though
+        break;
+    }
+  }
+  return rc;
+}
+
+IPAddress EthernetClass::localIP()
+{
+  IPAddress ret;
+  w5500.getIPAddress(ret.raw_address());
+  return ret;
+}
+
+IPAddress EthernetClass::subnetMask()
+{
+  IPAddress ret;
+  w5500.getSubnetMask(ret.raw_address());
+  return ret;
+}
+
+IPAddress EthernetClass::gatewayIP()
+{
+  IPAddress ret;
+  w5500.getGatewayIp(ret.raw_address());
+  return ret;
+}
+
+IPAddress EthernetClass::dnsServerIP()
+{
+  return _dnsServerAddress;
+}
+
+char* EthernetClass::dnsDomainName(){
+    return _dnsDomainName;
+}
+
+char* EthernetClass::hostName(){
+    return _hostName;
+}
+
+EthernetClass Ethernet;

libraries/Ethernet2/src/Ethernet2.h

@@ -0,0 +1,74 @@
+/*
+ modified 12 Aug 2013
+ by Soohwan Kim (suhwan@wiznet.co.kr)
+
+ - 10 Apr. 2015
+ Added support for Arduino Ethernet Shield 2
+ by Arduino.org team
+ 
+ */
+#ifndef ethernet_h
+#define ethernet_h
+
+#include <inttypes.h>
+#include "utility/w5500.h"
+#include "IPAddress.h"
+#include "EthernetClient.h"
+#include "EthernetServer.h"
+#include "Dhcp.h"
+
+
+
+class EthernetClass {
+private:
+  IPAddress _dnsServerAddress;
+  char* _dnsDomainName;
+  char* _hostName;
+  DhcpClass* _dhcp;
+public:
+  uint8_t w5500_cspin;
+
+  static uint8_t _state[MAX_SOCK_NUM];
+  static uint16_t _server_port[MAX_SOCK_NUM];
+
+  EthernetClass() { _dhcp = NULL; w5500_cspin = 10; }
+  void init(uint8_t _cspin = 10) { w5500_cspin = _cspin; }
+
+#if defined(WIZ550io_WITH_MACADDRESS)
+  // Initialize function when use the ioShield serise (included WIZ550io)
+  // WIZ550io has a MAC address which is written after reset.
+  // Default IP, Gateway and subnet address are also writen.
+  // so, It needs some initial time. please refer WIZ550io Datasheet in details.
+  int begin(void);
+  void begin(IPAddress local_ip);
+  void begin(IPAddress local_ip, IPAddress dns_server);
+  void begin(IPAddress local_ip, IPAddress dns_server, IPAddress gateway);
+  void begin(IPAddress local_ip, IPAddress dns_server, IPAddress gateway, IPAddress subnet);
+#else
+  // Initialize the Ethernet shield to use the provided MAC address and gain the rest of the
+  // configuration through DHCP.
+  // Returns 0 if the DHCP configuration failed, and 1 if it succeeded
+  int begin(uint8_t *mac_address);
+  void begin(uint8_t *mac_address, IPAddress local_ip);
+  void begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server);
+  void begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server, IPAddress gateway);
+  void begin(uint8_t *mac_address, IPAddress local_ip, IPAddress dns_server, IPAddress gateway, IPAddress subnet);
+
+#endif
+  
+  int maintain();
+
+  IPAddress localIP();
+  IPAddress subnetMask();
+  IPAddress gatewayIP();
+  IPAddress dnsServerIP();
+  char* dnsDomainName();
+  char* hostName();
+
+  friend class EthernetClient;
+  friend class EthernetServer;
+};
+
+extern EthernetClass Ethernet;
+
+#endif

libraries/Ethernet2/src/EthernetClient.cpp

@@ -0,0 +1,168 @@
+#include "utility/w5500.h"
+#include "utility/socket.h"
+
+extern "C" {
+  #include "string.h"
+}
+
+#include "Arduino.h"
+
+#include "Ethernet2.h"
+#include "EthernetClient.h"
+#include "EthernetServer.h"
+#include "Dns.h"
+
+uint16_t EthernetClient::_srcport = 1024;
+
+EthernetClient::EthernetClient() : _sock(MAX_SOCK_NUM) {
+}
+
+EthernetClient::EthernetClient(uint8_t sock) : _sock(sock) {
+}
+
+int EthernetClient::connect(const char* host, uint16_t port) {
+  // Look up the host first
+  int ret = 0;
+  DNSClient dns;
+  IPAddress remote_addr;
+
+  dns.begin(Ethernet.dnsServerIP());
+  ret = dns.getHostByName(host, remote_addr);
+  if (ret == 1) {
+    return connect(remote_addr, port);
+  } else {
+    return ret;
+  }
+}
+
+int EthernetClient::connect(IPAddress ip, uint16_t port) {
+  if (_sock != MAX_SOCK_NUM)
+    return 0;
+
+  for (int i = 0; i < MAX_SOCK_NUM; i++) {
+    uint8_t s = w5500.readSnSR(i);
+    if (s == SnSR::CLOSED || s == SnSR::FIN_WAIT || s == SnSR::CLOSE_WAIT) {
+      _sock = i;
+      break;
+    }
+  }
+
+  if (_sock == MAX_SOCK_NUM)
+    return 0;
+
+  _srcport++;
+  if (_srcport == 0) _srcport = 1024;
+  socket(_sock, SnMR::TCP, _srcport, 0);
+
+  if (!::connect(_sock, rawIPAddress(ip), port)) {
+    _sock = MAX_SOCK_NUM;
+    return 0;
+  }
+
+  while (status() != SnSR::ESTABLISHED) {
+    delay(1);
+    if (status() == SnSR::CLOSED) {
+      _sock = MAX_SOCK_NUM;
+      return 0;
+    }
+  }
+
+  return 1;
+}
+
+size_t EthernetClient::write(uint8_t b) {
+  return write(&b, 1);
+}
+
+size_t EthernetClient::write(const uint8_t *buf, size_t size) {
+  if (_sock == MAX_SOCK_NUM) {
+    setWriteError();
+    return 0;
+  }
+  if (!send(_sock, buf, size)) {
+    setWriteError();
+    return 0;
+  }
+  return size;
+}
+
+int EthernetClient::available() {
+  if (_sock != MAX_SOCK_NUM)
+    return w5500.getRXReceivedSize(_sock);
+  return 0;
+}
+
+int EthernetClient::read() {
+  uint8_t b;
+  if ( recv(_sock, &b, 1) > 0 )
+  {
+    // recv worked
+    return b;
+  }
+  else
+  {
+    // No data available
+    return -1;
+  }
+}
+
+int EthernetClient::read(uint8_t *buf, size_t size) {
+  return recv(_sock, buf, size);
+}
+
+int EthernetClient::peek() {
+  uint8_t b;
+  // Unlike recv, peek doesn't check to see if there's any data available, so we must
+  if (!available())
+    return -1;
+  ::peek(_sock, &b);
+  return b;
+}
+
+void EthernetClient::flush() {
+  ::flush(_sock);
+}
+
+void EthernetClient::stop() {
+  if (_sock == MAX_SOCK_NUM)
+    return;
+
+  // attempt to close the connection gracefully (send a FIN to other side)
+  disconnect(_sock);
+  unsigned long start = millis();
+
+  // wait a second for the connection to close
+  while (status() != SnSR::CLOSED && millis() - start < 1000)
+    delay(1);
+
+  // if it hasn't closed, close it forcefully
+  if (status() != SnSR::CLOSED)
+    close(_sock);
+
+  EthernetClass::_server_port[_sock] = 0;
+  _sock = MAX_SOCK_NUM;
+}
+
+uint8_t EthernetClient::connected() {
+  if (_sock == MAX_SOCK_NUM) return 0;
+  
+  uint8_t s = status();
+  return !(s == SnSR::LISTEN || s == SnSR::CLOSED || s == SnSR::FIN_WAIT ||
+    (s == SnSR::CLOSE_WAIT && !available()));
+}
+
+uint8_t EthernetClient::status() {
+  if (_sock == MAX_SOCK_NUM) return SnSR::CLOSED;
+  return w5500.readSnSR(_sock);
+}
+
+// the next function allows us to use the client returned by
+// EthernetServer::available() as the condition in an if-statement.
+
+EthernetClient::operator bool() {
+  return _sock != MAX_SOCK_NUM;
+}
+
+bool EthernetClient::operator==(const EthernetClient& rhs) {
+  return _sock == rhs._sock && _sock != MAX_SOCK_NUM && rhs._sock != MAX_SOCK_NUM;
+}

libraries/Ethernet2/src/EthernetClient.h

@@ -0,0 +1,39 @@
+#ifndef ethernetclient_h
+#define ethernetclient_h
+#include "Arduino.h"	
+#include "Print.h"
+#include "Client.h"
+#include "IPAddress.h"
+
+class EthernetClient : public Client {
+
+public:
+  EthernetClient();
+  EthernetClient(uint8_t sock);
+
+  uint8_t status();
+  virtual int connect(IPAddress ip, uint16_t port);
+  virtual int connect(const char *host, uint16_t port);
+  virtual size_t write(uint8_t);
+  virtual size_t write(const uint8_t *buf, size_t size);
+  virtual int available();
+  virtual int read();
+  virtual int read(uint8_t *buf, size_t size);
+  virtual int peek();
+  virtual void flush();
+  virtual void stop();
+  virtual uint8_t connected();
+  virtual operator bool();
+  virtual bool operator==(const EthernetClient&);
+  virtual bool operator!=(const EthernetClient& rhs) { return !this->operator==(rhs); };
+
+  friend class EthernetServer;
+  
+  using Print::write;
+
+private:
+  static uint16_t _srcport;
+  uint8_t _sock;
+};
+
+#endif

libraries/Ethernet2/src/EthernetServer.cpp

@@ -0,0 +1,91 @@
+#include "utility/w5500.h"
+#include "utility/socket.h"
+extern "C" {
+#include "string.h"
+}
+
+#include "Ethernet2.h"
+#include "EthernetClient.h"
+#include "EthernetServer.h"
+
+EthernetServer::EthernetServer(uint16_t port)
+{
+  _port = port;
+}
+
+void EthernetServer::begin()
+{
+  for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
+    EthernetClient client(sock);
+    if (client.status() == SnSR::CLOSED) {
+      socket(sock, SnMR::TCP, _port, 0);
+      listen(sock);
+      EthernetClass::_server_port[sock] = _port;
+      break;
+    }
+  }  
+}
+
+void EthernetServer::accept()
+{
+  int listening = 0;
+
+  for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
+    EthernetClient client(sock);
+
+    if (EthernetClass::_server_port[sock] == _port) {
+      if (client.status() == SnSR::LISTEN) {
+        listening = 1;
+      } 
+      else if (client.status() == SnSR::CLOSE_WAIT && !client.available()) {
+        client.stop();
+      }
+    } 
+  }
+
+  if (!listening) {
+    begin();
+  }
+}
+
+EthernetClient EthernetServer::available()
+{
+  accept();
+
+  for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
+    EthernetClient client(sock);
+    if (EthernetClass::_server_port[sock] == _port &&
+        (client.status() == SnSR::ESTABLISHED ||
+         client.status() == SnSR::CLOSE_WAIT)) {
+      if (client.available()) {
+        // XXX: don't always pick the lowest numbered socket.
+        return client;
+      }
+    }
+  }
+
+  return EthernetClient(MAX_SOCK_NUM);
+}
+
+size_t EthernetServer::write(uint8_t b) 
+{
+  return write(&b, 1);
+}
+
+size_t EthernetServer::write(const uint8_t *buffer, size_t size) 
+{
+  size_t n = 0;
+  
+  accept();
+
+  for (int sock = 0; sock < MAX_SOCK_NUM; sock++) {
+    EthernetClient client(sock);
+
+    if (EthernetClass::_server_port[sock] == _port &&
+      client.status() == SnSR::ESTABLISHED) {
+      n += client.write(buffer, size);
+    }
+  }
+  
+  return n;
+}

libraries/Ethernet2/src/EthernetServer.h

@@ -0,0 +1,22 @@
+#ifndef ethernetserver_h
+#define ethernetserver_h
+
+#include "Server.h"
+
+class EthernetClient;
+
+class EthernetServer : 
+public Server {
+private:
+  uint16_t _port;
+  void accept();
+public:
+  EthernetServer(uint16_t);
+  EthernetClient available();
+  virtual void begin();
+  virtual size_t write(uint8_t);
+  virtual size_t write(const uint8_t *buf, size_t size);
+  using Print::write;
+};
+
+#endif

libraries/Ethernet2/src/EthernetUdp2.cpp

@@ -0,0 +1,222 @@
+/*
+ *  Udp.cpp: Library to send/receive UDP packets with the Arduino ethernet shield.
+ *  This version only offers minimal wrapping of socket.c/socket.h
+ *  Drop Udp.h/.cpp into the Ethernet library directory at hardware/libraries/Ethernet/ 
+ *
+ * MIT License:
+ * Copyright (c) 2008 Bjoern Hartmann
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * bjoern@cs.stanford.edu 12/30/2008
+ *
+ * - 10 Apr. 2015
+ * Added support for Arduino Ethernet Shield 2
+ * by Arduino.org team
+ */
+
+#include "utility/w5500.h"
+#include "utility/socket.h"
+#include "Ethernet2.h"
+#include "Udp.h"
+#include "Dns.h"
+
+/* Constructor */
+EthernetUDP::EthernetUDP() : _sock(MAX_SOCK_NUM) {}
+
+/* Start EthernetUDP socket, listening at local port PORT */
+uint8_t EthernetUDP::begin(uint16_t port) {
+  if (_sock != MAX_SOCK_NUM)
+    return 0;
+
+  for (int i = 0; i < MAX_SOCK_NUM; i++) {
+    uint8_t s = w5500.readSnSR(i);
+    if (s == SnSR::CLOSED || s == SnSR::FIN_WAIT) {
+      _sock = i;
+      break;
+    }
+  }
+
+  if (_sock == MAX_SOCK_NUM)
+    return 0;
+
+  _port = port;
+  _remaining = 0;
+  socket(_sock, SnMR::UDP, _port, 0);
+
+  return 1;
+}
+
+/* return number of bytes available in the current packet,
+   will return zero if parsePacket hasn't been called yet */
+int EthernetUDP::available() {
+  return _remaining;
+}
+
+/* Release any resources being used by this EthernetUDP instance */
+void EthernetUDP::stop()
+{
+  if (_sock == MAX_SOCK_NUM)
+    return;
+
+  close(_sock);
+
+  EthernetClass::_server_port[_sock] = 0;
+  _sock = MAX_SOCK_NUM;
+}
+
+int EthernetUDP::beginPacket(const char *host, uint16_t port)
+{
+  // Look up the host first
+  int ret = 0;
+  DNSClient dns;
+  IPAddress remote_addr;
+
+  dns.begin(Ethernet.dnsServerIP());
+  ret = dns.getHostByName(host, remote_addr);
+  if (ret == 1) {
+    return beginPacket(remote_addr, port);
+  } else {
+    return ret;
+  }
+}
+
+int EthernetUDP::beginPacket(IPAddress ip, uint16_t port)
+{
+  _offset = 0;
+  return startUDP(_sock, rawIPAddress(ip), port);
+}
+
+int EthernetUDP::endPacket()
+{
+  return sendUDP(_sock);
+}
+
+size_t EthernetUDP::write(uint8_t byte)
+{
+  return write(&byte, 1);
+}
+
+size_t EthernetUDP::write(const uint8_t *buffer, size_t size)
+{
+  uint16_t bytes_written = bufferData(_sock, _offset, buffer, size);
+  _offset += bytes_written;
+  return bytes_written;
+}
+
+int EthernetUDP::parsePacket()
+{
+  // discard any remaining bytes in the last packet
+  flush();
+
+  if (w5500.getRXReceivedSize(_sock) > 0)
+  {
+    //HACK - hand-parse the UDP packet using TCP recv method
+    uint8_t tmpBuf[8];
+    int ret =0; 
+    //read 8 header bytes and get IP and port from it
+    ret = recv(_sock,tmpBuf,8);
+    if (ret > 0)
+    {
+      _remoteIP = tmpBuf;
+      _remotePort = tmpBuf[4];
+      _remotePort = (_remotePort << 8) + tmpBuf[5];
+      _remaining = tmpBuf[6];
+      _remaining = (_remaining << 8) + tmpBuf[7];
+
+      // When we get here, any remaining bytes are the data
+      ret = _remaining;
+    }
+    return ret;
+  }
+  // There aren't any packets available
+  return 0;
+}
+
+int EthernetUDP::read()
+{
+  uint8_t byte;
+
+  if ((_remaining > 0) && (recv(_sock, &byte, 1) > 0))
+  {
+    // We read things without any problems
+    _remaining--;
+    return byte;
+  }
+
+  // If we get here, there's no data available
+  return -1;
+}
+
+int EthernetUDP::read(unsigned char* buffer, size_t len)
+{
+
+  if (_remaining > 0)
+  {
+
+    int got;
+
+    if (_remaining <= len)
+    {
+      // data should fit in the buffer
+      got = recv(_sock, buffer, _remaining);
+    }
+    else
+    {
+      // too much data for the buffer, 
+      // grab as much as will fit
+      got = recv(_sock, buffer, len);
+    }
+
+    if (got > 0)
+    {
+      _remaining -= got;
+      return got;
+    }
+
+  }
+
+  // If we get here, there's no data available or recv failed
+  return -1;
+
+}
+
+int EthernetUDP::peek()
+{
+  uint8_t b;
+  // Unlike recv, peek doesn't check to see if there's any data available, so we must.
+  // If the user hasn't called parsePacket yet then return nothing otherwise they
+  // may get the UDP header
+  if (!_remaining)
+    return -1;
+  ::peek(_sock, &b);
+  return b;
+}
+
+void EthernetUDP::flush()
+{
+  // could this fail (loop endlessly) if _remaining > 0 and recv in read fails?
+  // should only occur if recv fails after telling us the data is there, lets
+  // hope the w5500 always behaves :)
+
+  while (_remaining)
+  {
+    read();
+  }
+}
+

libraries/Ethernet2/src/EthernetUdp2.h

@@ -0,0 +1,105 @@
+/*
+ *  Udp.cpp: Library to send/receive UDP packets with the Arduino ethernet shield.
+ *  This version only offers minimal wrapping of socket.c/socket.h
+ *  Drop Udp.h/.cpp into the Ethernet library directory at hardware/libraries/Ethernet/ 
+ *
+ * NOTE: UDP is fast, but has some important limitations (thanks to Warren Gray for mentioning these)
+ * 1) UDP does not guarantee the order in which assembled UDP packets are received. This
+ * might not happen often in practice, but in larger network topologies, a UDP
+ * packet can be received out of sequence. 
+ * 2) UDP does not guard against lost packets - so packets *can* disappear without the sender being
+ * aware of it. Again, this may not be a concern in practice on small local networks.
+ * For more information, see http://www.cafeaulait.org/course/week12/35.html
+ *
+ * MIT License:
+ * Copyright (c) 2008 Bjoern Hartmann
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * bjoern@cs.stanford.edu 12/30/2008
+ *
+ * - 10 Apr. 2015
+ * Added support for Arduino Ethernet Shield 2
+ * by Arduino.org team
+ *
+ */
+ 
+
+#ifndef ethernetudp_h
+#define ethernetudp_h
+
+#include <Udp.h>
+
+#define UDP_TX_PACKET_MAX_SIZE 24
+
+class EthernetUDP : public UDP {
+private:
+  uint8_t _sock;  // socket ID for Wiz5100
+  uint16_t _port; // local port to listen on
+  IPAddress _remoteIP; // remote IP address for the incoming packet whilst it's being processed
+  uint16_t _remotePort; // remote port for the incoming packet whilst it's being processed
+  uint16_t _offset; // offset into the packet being sent
+  uint16_t _remaining; // remaining bytes of incoming packet yet to be processed
+
+public:
+  EthernetUDP();  // Constructor
+  virtual uint8_t begin(uint16_t);	// initialize, start listening on specified port. Returns 1 if successful, 0 if there are no sockets available to use
+  virtual void stop();  // Finish with the UDP socket
+
+  // Sending UDP packets
+  
+  // Start building up a packet to send to the remote host specific in ip and port
+  // Returns 1 if successful, 0 if there was a problem with the supplied IP address or port
+  virtual int beginPacket(IPAddress ip, uint16_t port);
+  // Start building up a packet to send to the remote host specific in host and port
+  // Returns 1 if successful, 0 if there was a problem resolving the hostname or port
+  virtual int beginPacket(const char *host, uint16_t port);
+  // Finish off this packet and send it
+  // Returns 1 if the packet was sent successfully, 0 if there was an error
+  virtual int endPacket();
+  // Write a single byte into the packet
+  virtual size_t write(uint8_t);
+  // Write size bytes from buffer into the packet
+  virtual size_t write(const uint8_t *buffer, size_t size);
+  
+  using Print::write;
+
+  // Start processing the next available incoming packet
+  // Returns the size of the packet in bytes, or 0 if no packets are available
+  virtual int parsePacket();
+  // Number of bytes remaining in the current packet
+  virtual int available();
+  // Read a single byte from the current packet
+  virtual int read();
+  // Read up to len bytes from the current packet and place them into buffer
+  // Returns the number of bytes read, or 0 if none are available
+  virtual int read(unsigned char* buffer, size_t len);
+  // Read up to len characters from the current packet and place them into buffer
+  // Returns the number of characters read, or 0 if none are available
+  virtual int read(char* buffer, size_t len) { return read((unsigned char*)buffer, len); };
+  // Return the next byte from the current packet without moving on to the next byte
+  virtual int peek();
+  virtual void flush();	// Finish reading the current packet
+
+  // Return the IP address of the host who sent the current incoming packet
+  virtual IPAddress remoteIP() { return _remoteIP; };
+  // Return the port of the host who sent the current incoming packet
+  virtual uint16_t remotePort() { return _remotePort; };
+};
+
+#endif

libraries/Ethernet2/src/Twitter.cpp

@@ -0,0 +1,91 @@
+/*
+  Twitter.cpp - Arduino library to Post messages to Twitter using OAuth.
+  Copyright (c) NeoCat 2010-2011. All right reserved.
+  
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+ */
+
+// ver1.2 - Use <string.h>
+// ver1.3 - Support IDE 1.0
+
+#include <string.h>
+#include "Twitter.h"
+
+#define LIB_DOMAIN "arduino-tweet.appspot.com"
+
+#if defined(ARDUINO) && ARDUINO < 100
+static uint8_t server[] = {0,0,0,0}; // IP address of LIB_DOMAIN
+Twitter::Twitter(const char *token) : client(server, 80), token(token)
+{
+}
+#else
+Twitter::Twitter(const char *token) : token(token)
+{
+}
+#endif
+
+bool Twitter::post(const char *msg)
+{
+#if defined(ARDUINO) && ARDUINO < 100
+	DNSError err = EthernetDNS.resolveHostName(LIB_DOMAIN, server);
+	if (err != DNSSuccess) {
+		return false;
+	}
+#endif
+	parseStatus = 0;
+	statusCode = 0;
+#if defined(ARDUINO) && ARDUINO < 100
+	if (client.connect()) {
+#else
+	if (client.connect(LIB_DOMAIN, 80)) {
+#endif
+		client.println("POST http://" LIB_DOMAIN "/update HTTP/1.0");
+		client.print("Content-Length: ");
+		client.println(strlen(msg)+strlen(token)+14);
+		client.println();
+		client.print("token=");
+		client.print(token);
+		client.print("&status=");
+		client.println(msg);
+	} else {
+		return false;
+	}
+	return true;
+}
+
+bool Twitter::checkStatus(Print *debug)
+{
+	if (!client.connected()) {
+		if (debug)
+			while(client.available())
+				debug->print((char)client.read());
+		client.flush();
+		client.stop();
+		return false;
+	}
+	if (!client.available())
+		return true;
+	char c = client.read();
+	if (debug)
+		debug->print(c);
+	switch(parseStatus) {
+	case 0:
+		if (c == ' ') parseStatus++; break;  // skip "HTTP/1.1 "
+	case 1:
+		if (c >= '0' && c <= '9') {
+			statusCode *= 10;
+			statusCode += c - '0';
+		} else {
+			parseStatus++;
+		}
+	}
+	return true;
+}
+
+int Twitter::wait(Print *debug)
+{
+	while (checkStatus(debug));
+	return statusCode;
+}

libraries/Ethernet2/src/Twitter.h

@@ -0,0 +1,49 @@
+/*
+  Twitter.cpp - Arduino library to Post messages to Twitter using OAuth.
+  Copyright (c) NeoCat 2010-2011. All right reserved.
+  
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+ */
+
+// ver1.2 - Use <Udp.h> to support IDE 0019 or later
+// ver1.3 - Support IDE 1.0
+
+#ifndef TWITTER_H
+#define TWITTER_H
+
+#include <inttypes.h>
+#if defined(__AVR__) 
+#include <avr/pgmspace.h>
+#endif
+
+#if defined(ARDUINO) && ARDUINO > 18   // Arduino 0019 or later
+#include <SPI.h>
+#endif
+#include <Ethernet2.h>
+#if defined(ARDUINO) && ARDUINO < 100  // earlier than Arduino 1.0
+#include <EthernetDNS.h>
+#endif
+
+class Twitter
+{
+private:
+	uint8_t parseStatus;
+	int statusCode;
+	const char *token;
+#if defined(ARDUINO) && ARDUINO < 100
+	Client client;
+#else
+	EthernetClient client;
+#endif
+public:
+	Twitter(const char *user_and_passwd);
+	
+	bool post(const char *msg);
+	bool checkStatus(Print *debug = NULL);
+	int  wait(Print *debug = NULL);
+	int  status(void) { return statusCode; }
+};
+
+#endif	//TWITTER_H

libraries/Ethernet2/src/util.h

@@ -0,0 +1,13 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#define htons(x) ( ((x)<<8) | (((x)>>8)&0xFF) )
+#define ntohs(x) htons(x)
+
+#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
+                   ((x)<< 8 & 0x00FF0000UL) | \
+                   ((x)>> 8 & 0x0000FF00UL) | \
+                   ((x)>>24 & 0x000000FFUL) )
+#define ntohl(x) htonl(x)
+
+#endif

libraries/Ethernet2/src/utility/socket.cpp

@@ -0,0 +1,412 @@
+ /*
+ * - 10 Apr. 2015
+ * Added support for Arduino Ethernet Shield 2
+ * by Arduino.org team
+ */
+ 
+#include "utility/w5500.h"
+#include "utility/socket.h"
+
+static uint16_t local_port;
+
+/**
+ * @brief	This Socket function initialize the channel in perticular mode, and set the port and wait for w5500 done it.
+ * @return 	1 for success else 0.
+ */
+uint8_t socket(SOCKET s, uint8_t protocol, uint16_t port, uint8_t flag)
+{
+  if ((protocol == SnMR::TCP) || (protocol == SnMR::UDP) || (protocol == SnMR::IPRAW) || (protocol == SnMR::MACRAW) || (protocol == SnMR::PPPOE))
+  {
+    close(s);
+    w5500.writeSnMR(s, protocol | flag);
+    if (port != 0) {
+      w5500.writeSnPORT(s, port);
+    } 
+    else {
+      local_port++; // if don't set the source port, set local_port number.
+      w5500.writeSnPORT(s, local_port);
+    }
+
+    w5500.execCmdSn(s, Sock_OPEN);
+    
+    return 1;
+  }
+
+  return 0;
+}
+
+
+/**
+ * @brief	This function close the socket and parameter is "s" which represent the socket number
+ */
+void close(SOCKET s)
+{
+  w5500.execCmdSn(s, Sock_CLOSE);
+  w5500.writeSnIR(s, 0xFF);
+}
+
+
+/**
+ * @brief	This function established  the connection for the channel in passive (server) mode. This function waits for the request from the peer.
+ * @return	1 for success else 0.
+ */
+uint8_t listen(SOCKET s)
+{
+  if (w5500.readSnSR(s) != SnSR::INIT)
+    return 0;
+  w5500.execCmdSn(s, Sock_LISTEN);
+  return 1;
+}
+
+
+/**
+ * @brief	This function established  the connection for the channel in Active (client) mode. 
+ * 		This function waits for the untill the connection is established.
+ * 		
+ * @return	1 for success else 0.
+ */
+uint8_t connect(SOCKET s, uint8_t * addr, uint16_t port)
+{
+  if 
+    (
+  ((addr[0] == 0xFF) && (addr[1] == 0xFF) && (addr[2] == 0xFF) && (addr[3] == 0xFF)) ||
+    ((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) && (addr[3] == 0x00)) ||
+    (port == 0x00) 
+    ) 
+    return 0;
+
+  // set destination IP
+  w5500.writeSnDIPR(s, addr);
+  w5500.writeSnDPORT(s, port);
+  w5500.execCmdSn(s, Sock_CONNECT);
+
+  return 1;
+}
+
+
+
+/**
+ * @brief	This function used for disconnect the socket and parameter is "s" which represent the socket number
+ * @return	1 for success else 0.
+ */
+void disconnect(SOCKET s)
+{
+  w5500.execCmdSn(s, Sock_DISCON);
+}
+
+
+/**
+ * @brief	This function used to send the data in TCP mode
+ * @return	1 for success else 0.
+ */
+uint16_t send(SOCKET s, const uint8_t * buf, uint16_t len)
+{
+  uint8_t status=0;
+  uint16_t ret=0;
+  uint16_t freesize=0;
+
+  if (len > w5500.SSIZE) 
+    ret = w5500.SSIZE; // check size not to exceed MAX size.
+  else 
+    ret = len;
+
+  // if freebuf is available, start.
+  do 
+  {
+    freesize = w5500.getTXFreeSize(s);
+    status = w5500.readSnSR(s);
+    if ((status != SnSR::ESTABLISHED) && (status != SnSR::CLOSE_WAIT))
+    {
+      ret = 0; 
+      break;
+    }
+  } 
+  while (freesize < ret);
+
+  // copy data
+  w5500.send_data_processing(s, (uint8_t *)buf, ret);
+  w5500.execCmdSn(s, Sock_SEND);
+
+  /* +2008.01 bj */
+  while ( (w5500.readSnIR(s) & SnIR::SEND_OK) != SnIR::SEND_OK ) 
+  {
+    /* m2008.01 [bj] : reduce code */
+    if ( w5500.readSnSR(s) == SnSR::CLOSED )
+    {
+      close(s);
+      return 0;
+    }
+  }
+  /* +2008.01 bj */
+  w5500.writeSnIR(s, SnIR::SEND_OK);
+  return ret;
+}
+
+
+/**
+ * @brief	This function is an application I/F function which is used to receive the data in TCP mode.
+ * 		It continues to wait for data as much as the application wants to receive.
+ * 		
+ * @return	received data size for success else -1.
+ */
+int16_t recv(SOCKET s, uint8_t *buf, int16_t len)
+{
+  // Check how much data is available
+  int16_t ret = w5500.getRXReceivedSize(s);
+  if ( ret == 0 )
+  {
+    // No data available.
+    uint8_t status = w5500.readSnSR(s);
+    if ( status == SnSR::LISTEN || status == SnSR::CLOSED || status == SnSR::CLOSE_WAIT )
+    {
+      // The remote end has closed its side of the connection, so this is the eof state
+      ret = 0;
+    }
+    else
+    {
+      // The connection is still up, but there's no data waiting to be read
+      ret = -1;
+    }
+  }
+  else if (ret > len)
+  {
+    ret = len;
+  }
+
+  if ( ret > 0 )
+  {
+    w5500.recv_data_processing(s, buf, ret);
+    w5500.execCmdSn(s, Sock_RECV);
+  }
+  return ret;
+}
+
+
+/**
+ * @brief	Returns the first byte in the receive queue (no checking)
+ * 		
+ * @return
+ */
+uint16_t peek(SOCKET s, uint8_t *buf)
+{
+  w5500.recv_data_processing(s, buf, 1, 1);
+
+  return 1;
+}
+
+
+/**
+ * @brief	This function is an application I/F function which is used to send the data for other then TCP mode. 
+ * 		Unlike TCP transmission, The peer's destination address and the port is needed.
+ * 		
+ * @return	This function return send data size for success else -1.
+ */
+uint16_t sendto(SOCKET s, const uint8_t *buf, uint16_t len, uint8_t *addr, uint16_t port)
+{
+  uint16_t ret=0;
+
+  if (len > w5500.SSIZE) ret = w5500.SSIZE; // check size not to exceed MAX size.
+  else ret = len;
+
+  if
+    (
+  ((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) && (addr[3] == 0x00)) ||
+    ((port == 0x00)) ||(ret == 0)
+    ) 
+  {
+    /* +2008.01 [bj] : added return value */
+    ret = 0;
+  }
+  else
+  {
+    w5500.writeSnDIPR(s, addr);
+    w5500.writeSnDPORT(s, port);
+
+    // copy data
+    w5500.send_data_processing(s, (uint8_t *)buf, ret);
+    w5500.execCmdSn(s, Sock_SEND);
+
+    /* +2008.01 bj */
+    while ( (w5500.readSnIR(s) & SnIR::SEND_OK) != SnIR::SEND_OK ) 
+    {
+      if (w5500.readSnIR(s) & SnIR::TIMEOUT)
+      {
+        /* +2008.01 [bj]: clear interrupt */
+        w5500.writeSnIR(s, (SnIR::SEND_OK | SnIR::TIMEOUT)); /* clear SEND_OK & TIMEOUT */
+        return 0;
+      }
+    }
+
+    /* +2008.01 bj */
+    w5500.writeSnIR(s, SnIR::SEND_OK);
+  }
+  return ret;
+}
+
+
+/**
+ * @brief	This function is an application I/F function which is used to receive the data in other then
+ * 	TCP mode. This function is used to receive UDP, IP_RAW and MAC_RAW mode, and handle the header as well. 
+ * 	
+ * @return	This function return received data size for success else -1.
+ */
+uint16_t recvfrom(SOCKET s, uint8_t *buf, uint16_t len, uint8_t *addr, uint16_t *port)
+{
+  uint8_t head[8];
+  uint16_t data_len=0;
+  uint16_t ptr=0;
+
+  if ( len > 0 )
+  {
+    ptr = w5500.readSnRX_RD(s);
+    switch (w5500.readSnMR(s) & 0x07)
+    {
+    case SnMR::UDP :
+      w5500.read_data(s, ptr, head, 0x08);
+      ptr += 8;
+      // read peer's IP address, port number.
+      addr[0] = head[0];
+      addr[1] = head[1];
+      addr[2] = head[2];
+      addr[3] = head[3];
+      *port = head[4];
+      *port = (*port << 8) + head[5];
+      data_len = head[6];
+      data_len = (data_len << 8) + head[7];
+
+      w5500.read_data(s, ptr, buf, data_len); // data copy.
+      ptr += data_len;
+
+      w5500.writeSnRX_RD(s, ptr);
+      break;
+
+    case SnMR::IPRAW :
+      w5500.read_data(s, ptr, head, 0x06);
+      ptr += 6;
+
+      addr[0] = head[0];
+      addr[1] = head[1];
+      addr[2] = head[2];
+      addr[3] = head[3];
+      data_len = head[4];
+      data_len = (data_len << 8) + head[5];
+
+      w5500.read_data(s, ptr, buf, data_len); // data copy.
+      ptr += data_len;
+
+      w5500.writeSnRX_RD(s, ptr);
+      break;
+
+    case SnMR::MACRAW:
+      w5500.read_data(s, ptr, head, 2);
+      ptr+=2;
+      data_len = head[0];
+      data_len = (data_len<<8) + head[1] - 2;
+
+      w5500.read_data(s, ptr, buf, data_len);
+      ptr += data_len;
+      w5500.writeSnRX_RD(s, ptr);
+      break;
+
+    default :
+      break;
+    }
+    w5500.execCmdSn(s, Sock_RECV);
+  }
+  return data_len;
+}
+
+/**
+ * @brief	Wait for buffered transmission to complete.
+ */
+void flush(SOCKET s) {
+  // TODO
+}
+
+uint16_t igmpsend(SOCKET s, const uint8_t * buf, uint16_t len)
+{
+  uint8_t status=0;
+  uint16_t ret=0;
+
+  if (len > w5500.SSIZE) 
+    ret = w5500.SSIZE; // check size not to exceed MAX size.
+  else 
+    ret = len;
+
+  if (ret == 0)
+    return 0;
+
+  w5500.send_data_processing(s, (uint8_t *)buf, ret);
+  w5500.execCmdSn(s, Sock_SEND);
+
+  while ( (w5500.readSnIR(s) & SnIR::SEND_OK) != SnIR::SEND_OK ) 
+  {
+    status = w5500.readSnSR(s);
+    if (w5500.readSnIR(s) & SnIR::TIMEOUT)
+    {
+      /* in case of igmp, if send fails, then socket closed */
+      /* if you want change, remove this code. */
+      close(s);
+      return 0;
+    }
+  }
+
+  w5500.writeSnIR(s, SnIR::SEND_OK);
+  return ret;
+}
+
+uint16_t bufferData(SOCKET s, uint16_t offset, const uint8_t* buf, uint16_t len)
+{
+  uint16_t ret =0;
+  if (len > w5500.getTXFreeSize(s))
+  {
+    ret = w5500.getTXFreeSize(s); // check size not to exceed MAX size.
+  }
+  else
+  {
+    ret = len;
+  }
+  w5500.send_data_processing_offset(s, offset, buf, ret);
+  return ret;
+}
+
+int startUDP(SOCKET s, uint8_t* addr, uint16_t port)
+{
+  if
+    (
+     ((addr[0] == 0x00) && (addr[1] == 0x00) && (addr[2] == 0x00) && (addr[3] == 0x00)) ||
+     ((port == 0x00))
+    ) 
+  {
+    return 0;
+  }
+  else
+  {
+    w5500.writeSnDIPR(s, addr);
+    w5500.writeSnDPORT(s, port);
+    return 1;
+  }
+}
+
+int sendUDP(SOCKET s)
+{
+  w5500.execCmdSn(s, Sock_SEND);
+		
+  /* +2008.01 bj */
+  while ( (w5500.readSnIR(s) & SnIR::SEND_OK) != SnIR::SEND_OK ) 
+  {
+    if (w5500.readSnIR(s) & SnIR::TIMEOUT)
+    {
+      /* +2008.01 [bj]: clear interrupt */
+      w5500.writeSnIR(s, (SnIR::SEND_OK|SnIR::TIMEOUT));
+      return 0;
+    }
+  }
+
+  /* +2008.01 bj */	
+  w5500.writeSnIR(s, SnIR::SEND_OK);
+
+  /* Sent ok */
+  return 1;
+}
+

libraries/Ethernet2/src/utility/socket.h

@@ -0,0 +1,48 @@
+ /*
+ * - 10 Apr. 2015
+ * Added support for Arduino Ethernet Shield 2
+ * by Arduino.org team
+ */
+ 
+#ifndef	_SOCKET_H_
+#define	_SOCKET_H_
+
+#include "utility/w5500.h"
+
+extern uint8_t socket(SOCKET s, uint8_t protocol, uint16_t port, uint8_t flag); // Opens a socket(TCP or UDP or IP_RAW mode)
+extern void close(SOCKET s); // Close socket
+extern uint8_t connect(SOCKET s, uint8_t * addr, uint16_t port); // Establish TCP connection (Active connection)
+extern void disconnect(SOCKET s); // disconnect the connection
+extern uint8_t listen(SOCKET s);	// Establish TCP connection (Passive connection)
+extern uint16_t send(SOCKET s, const uint8_t * buf, uint16_t len); // Send data (TCP)
+extern int16_t recv(SOCKET s, uint8_t * buf, int16_t len);	// Receive data (TCP)
+extern uint16_t peek(SOCKET s, uint8_t *buf);
+extern uint16_t sendto(SOCKET s, const uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t port); // Send data (UDP/IP RAW)
+extern uint16_t recvfrom(SOCKET s, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t *port); // Receive data (UDP/IP RAW)
+extern void flush(SOCKET s); // Wait for transmission to complete
+
+extern uint16_t igmpsend(SOCKET s, const uint8_t * buf, uint16_t len);
+
+// Functions to allow buffered UDP send (i.e. where the UDP datagram is built up over a
+// number of calls before being sent
+/*
+  @brief This function sets up a UDP datagram, the data for which will be provided by one
+  or more calls to bufferData and then finally sent with sendUDP.
+  @return 1 if the datagram was successfully set up, or 0 if there was an error
+*/
+extern int startUDP(SOCKET s, uint8_t* addr, uint16_t port);
+/*
+  @brief This function copies up to len bytes of data from buf into a UDP datagram to be
+  sent later by sendUDP.  Allows datagrams to be built up from a series of bufferData calls.
+  @return Number of bytes successfully buffered
+*/
+uint16_t bufferData(SOCKET s, uint16_t offset, const uint8_t* buf, uint16_t len);
+/*
+  @brief Send a UDP datagram built up from a sequence of startUDP followed by one or more
+  calls to bufferData.
+  @return 1 if the datagram was successfully sent, or 0 if there was an error
+*/
+int sendUDP(SOCKET s);
+
+#endif
+/* _SOCKET_H_ */

libraries/Ethernet2/src/utility/util.h

@@ -0,0 +1,14 @@
+#ifndef UTIL_H
+#define UTIL_H
+
+#define htons(x) ( ((x)<< 8 & 0xFF00) | \
+                   ((x)>> 8 & 0x00FF) )
+#define ntohs(x) htons(x)
+
+#define htonl(x) ( ((x)<<24 & 0xFF000000UL) | \
+                   ((x)<< 8 & 0x00FF0000UL) | \
+                   ((x)>> 8 & 0x0000FF00UL) | \
+                   ((x)>>24 & 0x000000FFUL) )
+#define ntohl(x) htonl(x)
+
+#endif

libraries/Ethernet2/src/utility/w5500.cpp

@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2010 by WIZnet <support@wiznet.co.kr>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of either the GNU General Public License version 2
+ * or the GNU Lesser General Public License version 2.1, both as
+ * published by the Free Software Foundation.
+ *
+ * - 10 Apr. 2015
+ * Added support for Arduino Ethernet Shield 2
+ * by Arduino.org team
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "Arduino.h"
+
+#include "utility/w5500.h"
+//#if defined(W5500_ETHERNET_SHIELD)
+
+// W5500 controller instance
+W5500Class w5500;
+
+// SPI details
+SPISettings wiznet_SPI_settings(8000000, MSBFIRST, SPI_MODE0);
+uint8_t SPI_CS;
+
+void W5500Class::init(uint8_t ss_pin)
+{
+  SPI_CS = ss_pin;
+
+  delay(1000);
+  initSS();
+  SPI.begin();
+  w5500.swReset();
+  for (int i=0; i<MAX_SOCK_NUM; i++) {
+    uint8_t cntl_byte = (0x0C + (i<<5));
+    write( 0x1E, cntl_byte, 2); //0x1E - Sn_RXBUF_SIZE
+    write( 0x1F, cntl_byte, 2); //0x1F - Sn_TXBUF_SIZE
+  }
+}
+
+uint16_t W5500Class::getTXFreeSize(SOCKET s)
+{
+    uint16_t val=0, val1=0;
+    do {
+        val1 = readSnTX_FSR(s);
+        if (val1 != 0)
+            val = readSnTX_FSR(s);
+    } 
+    while (val != val1);
+    return val;
+}
+
+uint16_t W5500Class::getRXReceivedSize(SOCKET s)
+{
+    uint16_t val=0,val1=0;
+    do {
+        val1 = readSnRX_RSR(s);
+        if (val1 != 0)
+            val = readSnRX_RSR(s);
+    } 
+    while (val != val1);
+    return val;
+}
+
+void W5500Class::send_data_processing(SOCKET s, const uint8_t *data, uint16_t len)
+{
+  // This is same as having no offset in a call to send_data_processing_offset
+  send_data_processing_offset(s, 0, data, len);
+
+}
+
+void W5500Class::send_data_processing_offset(SOCKET s, uint16_t data_offset, const uint8_t *data, uint16_t len)
+{
+    uint16_t ptr = readSnTX_WR(s);
+    uint8_t cntl_byte = (0x14+(s<<5));
+    ptr += data_offset;
+    write(ptr, cntl_byte, data, len);
+    ptr += len;
+    writeSnTX_WR(s, ptr);
+}
+
+void W5500Class::recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek)
+{
+    uint16_t ptr;
+    ptr = readSnRX_RD(s);
+
+    read_data(s, ptr, data, len);
+    if (!peek)
+    {
+        ptr += len;
+        writeSnRX_RD(s, ptr);
+    }
+}
+
+void W5500Class::read_data(SOCKET s, volatile uint16_t src, volatile uint8_t *dst, uint16_t len)
+{
+    uint8_t cntl_byte = (0x18+(s<<5));
+    read((uint16_t)src , cntl_byte, (uint8_t *)dst, len);
+}
+
+uint8_t W5500Class::write(uint16_t _addr, uint8_t _cb, uint8_t _data)
+{
+    SPI.beginTransaction(wiznet_SPI_settings);
+    setSS();  
+    SPI.transfer(_addr >> 8);
+    SPI.transfer(_addr & 0xFF);
+    SPI.transfer(_cb);
+    SPI.transfer(_data);
+    resetSS();
+    SPI.endTransaction();
+
+    return 1;
+}
+
+uint16_t W5500Class::write(uint16_t _addr, uint8_t _cb, const uint8_t *_buf, uint16_t _len)
+{
+    SPI.beginTransaction(wiznet_SPI_settings);
+    setSS();
+    SPI.transfer(_addr >> 8);
+    SPI.transfer(_addr & 0xFF);
+    SPI.transfer(_cb);
+    for (uint16_t i=0; i<_len; i++){
+        SPI.transfer(_buf[i]);
+    }
+    resetSS();
+    SPI.endTransaction();
+
+    return _len;
+}
+
+uint8_t W5500Class::read(uint16_t _addr, uint8_t _cb)
+{
+    SPI.beginTransaction(wiznet_SPI_settings);
+    setSS();
+    SPI.transfer(_addr >> 8);
+    SPI.transfer(_addr & 0xFF);
+    SPI.transfer(_cb);
+    uint8_t _data = SPI.transfer(0);
+    resetSS();
+    SPI.endTransaction();
+
+    return _data;
+}
+
+uint16_t W5500Class::read(uint16_t _addr, uint8_t _cb, uint8_t *_buf, uint16_t _len)
+{ 
+    SPI.beginTransaction(wiznet_SPI_settings);
+    setSS();
+    SPI.transfer(_addr >> 8);
+    SPI.transfer(_addr & 0xFF);
+    SPI.transfer(_cb);
+    for (uint16_t i=0; i<_len; i++){
+        _buf[i] = SPI.transfer(0);
+    }
+    resetSS();
+    SPI.endTransaction();
+
+    return _len;
+}
+
+void W5500Class::execCmdSn(SOCKET s, SockCMD _cmd) {
+    // Send command to socket
+    writeSnCR(s, _cmd);
+    // Wait for command to complete
+    while (readSnCR(s))
+    ;
+}
+
+
+uint8_t W5500Class::readVersion(void)
+{
+    SPI.beginTransaction(wiznet_SPI_settings);
+    setSS();
+    SPI.transfer( 0x00 );
+    SPI.transfer( 0x39 );
+    SPI.transfer( 0x01);
+    uint8_t _data = SPI.transfer(0);
+    resetSS();
+    SPI.endTransaction();
+
+    return _data;
+}
+
+
+//#endif

libraries/Ethernet2/src/utility/w5500.h

@@ -0,0 +1,420 @@
+/*
+* Copyright (c) 2010 by WIZnet <support@wiznet.co.kr>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of either the GNU General Public License version 2
+ * or the GNU Lesser General Public License version 2.1, both as
+ * published by the Free Software Foundation.
+ *
+ * - 10 Apr. 2015
+ * Added support for Arduino Ethernet Shield 2
+ * by Arduino.org team
+ */
+
+#ifndef	W5500_H_INCLUDED
+#define	W5500_H_INCLUDED
+
+#define MAX_SOCK_NUM 8
+#include <Arduino.h>
+#include <SPI.h>
+
+extern uint8_t SPI_CS;
+
+
+typedef uint8_t SOCKET;
+/*
+class MR {
+public:
+  static const uint8_t RST   = 0x80;
+  static const uint8_t PB    = 0x10;
+  static const uint8_t PPPOE = 0x08;
+  static const uint8_t LB    = 0x04;
+  static const uint8_t AI    = 0x02;
+  static const uint8_t IND   = 0x01;
+};
+*/
+/*
+class IR {
+public:
+  static const uint8_t CONFLICT = 0x80;
+  static const uint8_t UNREACH  = 0x40;
+  static const uint8_t PPPoE    = 0x20;
+  static const uint8_t SOCK0    = 0x01;
+  static const uint8_t SOCK1    = 0x02;
+  static const uint8_t SOCK2    = 0x04;
+  static const uint8_t SOCK3    = 0x08;
+  static inline uint8_t SOCK(SOCKET ch) { return (0x01 << ch); };
+};
+*/
+
+class SnMR {
+public:
+  static const uint8_t CLOSE  = 0x00;
+  static const uint8_t TCP    = 0x01;
+  static const uint8_t UDP    = 0x02;
+  static const uint8_t IPRAW  = 0x03;
+  static const uint8_t MACRAW = 0x04;
+  static const uint8_t PPPOE  = 0x05;
+  static const uint8_t ND     = 0x20;
+  static const uint8_t MULTI  = 0x80;
+};
+
+enum SockCMD {
+  Sock_OPEN      = 0x01,
+  Sock_LISTEN    = 0x02,
+  Sock_CONNECT   = 0x04,
+  Sock_DISCON    = 0x08,
+  Sock_CLOSE     = 0x10,
+  Sock_SEND      = 0x20,
+  Sock_SEND_MAC  = 0x21,
+  Sock_SEND_KEEP = 0x22,
+  Sock_RECV      = 0x40
+};
+
+/*class SnCmd {
+public:
+  static const uint8_t OPEN      = 0x01;
+  static const uint8_t LISTEN    = 0x02;
+  static const uint8_t CONNECT   = 0x04;
+  static const uint8_t DISCON    = 0x08;
+  static const uint8_t CLOSE     = 0x10;
+  static const uint8_t SEND      = 0x20;
+  static const uint8_t SEND_MAC  = 0x21;
+  static const uint8_t SEND_KEEP = 0x22;
+  static const uint8_t RECV      = 0x40;
+};
+*/
+
+class SnIR {
+public:
+  static const uint8_t SEND_OK = 0x10;
+  static const uint8_t TIMEOUT = 0x08;
+  static const uint8_t RECV    = 0x04;
+  static const uint8_t DISCON  = 0x02;
+  static const uint8_t CON     = 0x01;
+};
+
+class SnSR {
+public:
+  static const uint8_t CLOSED      = 0x00;
+  static const uint8_t INIT        = 0x13;
+  static const uint8_t LISTEN      = 0x14;
+  static const uint8_t SYNSENT     = 0x15;
+  static const uint8_t SYNRECV     = 0x16;
+  static const uint8_t ESTABLISHED = 0x17;
+  static const uint8_t FIN_WAIT    = 0x18;
+  static const uint8_t CLOSING     = 0x1A;
+  static const uint8_t TIME_WAIT   = 0x1B;
+  static const uint8_t CLOSE_WAIT  = 0x1C;
+  static const uint8_t LAST_ACK    = 0x1D;
+  static const uint8_t UDP         = 0x22;
+  static const uint8_t IPRAW       = 0x32;
+  static const uint8_t MACRAW      = 0x42;
+  static const uint8_t PPPOE       = 0x5F;
+};
+
+class IPPROTO {
+public:
+  static const uint8_t IP   = 0;
+  static const uint8_t ICMP = 1;
+  static const uint8_t IGMP = 2;
+  static const uint8_t GGP  = 3;
+  static const uint8_t TCP  = 6;
+  static const uint8_t PUP  = 12;
+  static const uint8_t UDP  = 17;
+  static const uint8_t IDP  = 22;
+  static const uint8_t ND   = 77;
+  static const uint8_t RAW  = 255;
+};
+
+class W5500Class {
+
+public:
+  void init(uint8_t ss_pin = 10);
+  uint8_t readVersion(void);
+
+  /**
+   * @brief	This function is being used for copy the data form Receive buffer of the chip to application buffer.
+   * 
+   * It calculate the actual physical address where one has to read
+   * the data from Receive buffer. Here also take care of the condition while it exceed
+   * the Rx memory uper-bound of socket.
+   */
+  void read_data(SOCKET s, volatile uint16_t  src, volatile uint8_t * dst, uint16_t len);
+  
+  /**
+   * @brief	 This function is being called by send() and sendto() function also. 
+   * 
+   * This function read the Tx write pointer register and after copy the data in buffer update the Tx write pointer
+   * register. User should read upper byte first and lower byte later to get proper value.
+   */
+  void send_data_processing(SOCKET s, const uint8_t *data, uint16_t len);
+  /**
+   * @brief A copy of send_data_processing that uses the provided ptr for the
+   *        write offset.  Only needed for the "streaming" UDP API, where
+   *        a single UDP packet is built up over a number of calls to
+   *        send_data_processing_ptr, because TX_WR doesn't seem to get updated
+   *        correctly in those scenarios
+   * @param ptr value to use in place of TX_WR.  If 0, then the value is read
+   *        in from TX_WR
+   * @return New value for ptr, to be used in the next call
+   */
+  // FIXME Update documentation
+  void send_data_processing_offset(SOCKET s, uint16_t data_offset, const uint8_t *data, uint16_t len);
+
+  /**
+   * @brief	This function is being called by recv() also.
+   * 
+   * This function read the Rx read pointer register
+   * and after copy the data from receive buffer update the Rx write pointer register.
+   * User should read upper byte first and lower byte later to get proper value.
+   */
+  void recv_data_processing(SOCKET s, uint8_t *data, uint16_t len, uint8_t peek = 0);
+
+  inline void setGatewayIp(uint8_t *_addr);
+  inline void getGatewayIp(uint8_t *_addr);
+
+  inline void setSubnetMask(uint8_t *_addr);
+  inline void getSubnetMask(uint8_t *_addr);
+
+  inline void setMACAddress(uint8_t * addr);
+  inline void getMACAddress(uint8_t * addr);
+
+  inline void setIPAddress(uint8_t * addr);
+  inline void getIPAddress(uint8_t * addr);
+
+  inline void setRetransmissionTime(uint16_t timeout);
+  inline void setRetransmissionCount(uint8_t _retry);
+
+  inline void swReset();
+
+  inline void setPHYCFGR(uint8_t _val);
+  inline uint8_t getPHYCFGR();
+
+  void execCmdSn(SOCKET s, SockCMD _cmd);
+  
+  uint16_t getTXFreeSize(SOCKET s);
+  uint16_t getRXReceivedSize(SOCKET s);
+  
+
+  // W5500 Registers
+  // ---------------
+private:
+  static uint8_t  write(uint16_t _addr, uint8_t _cb, uint8_t _data);
+  static uint16_t write(uint16_t _addr, uint8_t _cb, const uint8_t *buf, uint16_t len);
+  static uint8_t  read(uint16_t _addr, uint8_t _cb );
+  static uint16_t read(uint16_t _addr, uint8_t _cb, uint8_t *buf, uint16_t len);
+  
+#define __GP_REGISTER8(name, address)             \
+  static inline void write##name(uint8_t _data) { \
+    write(address, 0x04, _data);                  \
+  }                                               \
+  static inline uint8_t read##name() {            \
+    return read(address, 0x00);                   \
+  }
+#define __GP_REGISTER16(name, address)            \
+  static void write##name(uint16_t _data) {       \
+    write(address,  0x04, _data >> 8);            \
+    write(address+1, 0x04, _data & 0xFF);         \
+  }                                               \
+  static uint16_t read##name() {                  \
+    uint16_t res = read(address, 0x00);           \
+    res = (res << 8) + read(address + 1, 0x00);   \
+    return res;                                   \
+  }
+#define __GP_REGISTER_N(name, address, size)      \
+  static uint16_t write##name(uint8_t *_buff) {   \
+    return write(address, 0x04, _buff, size);     \
+  }                                               \
+  static uint16_t read##name(uint8_t *_buff) {    \
+    return read(address, 0x00, _buff, size);      \
+  }
+
+public:
+  __GP_REGISTER8 (MR,     0x0000);    // Mode
+  __GP_REGISTER_N(GAR,    0x0001, 4); // Gateway IP address
+  __GP_REGISTER_N(SUBR,   0x0005, 4); // Subnet mask address
+  __GP_REGISTER_N(SHAR,   0x0009, 6); // Source MAC address
+  __GP_REGISTER_N(SIPR,   0x000F, 4); // Source IP address
+  __GP_REGISTER8 (IR,     0x0015);    // Interrupt
+  __GP_REGISTER8 (IMR,    0x0016);    // Interrupt Mask
+  __GP_REGISTER16(RTR,    0x0019);    // Timeout address
+  __GP_REGISTER8 (RCR,    0x001B);    // Retry count
+  __GP_REGISTER_N(UIPR,   0x0028, 4); // Unreachable IP address in UDP mode
+  __GP_REGISTER16(UPORT,  0x002C);    // Unreachable Port address in UDP mode
+  __GP_REGISTER8 (PHYCFGR,     0x002E);    // PHY Configuration register, default value: 0b 1011 1xxx
+
+  
+#undef __GP_REGISTER8
+#undef __GP_REGISTER16
+#undef __GP_REGISTER_N
+
+  // W5500 Socket registers
+  // ----------------------
+private:
+  static inline uint8_t readSn(SOCKET _s, uint16_t _addr);
+  static inline uint8_t writeSn(SOCKET _s, uint16_t _addr, uint8_t _data);
+  static inline uint16_t readSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t len);
+  static inline uint16_t writeSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t len);
+
+  //static const uint16_t CH_BASE = 0x0000;
+  //static const uint16_t CH_SIZE = 0x0000;
+
+#define __SOCKET_REGISTER8(name, address)                    \
+  static inline void write##name(SOCKET _s, uint8_t _data) { \
+    writeSn(_s, address, _data);                             \
+  }                                                          \
+  static inline uint8_t read##name(SOCKET _s) {              \
+    return readSn(_s, address);                              \
+  }
+#if defined(REL_GR_KURUMI) || defined(REL_GR_KURUMI_PROTOTYPE)  
+#define __SOCKET_REGISTER16(name, address)                   \
+  static void write##name(SOCKET _s, uint16_t _data) {       \
+    writeSn(_s, address,   _data >> 8);                      \
+    writeSn(_s, address+1, _data & 0xFF);                    \
+  }                                                          \
+  static uint16_t read##name(SOCKET _s) {                    \
+    uint16_t res = readSn(_s, address);                      \
+    uint16_t res2 = readSn(_s,address + 1);                  \
+    res = res << 8;                                          \
+    res2 = res2 & 0xFF;                                      \
+    res = res | res2;                                        \
+    return res;                                              \
+  }
+#else
+#define __SOCKET_REGISTER16(name, address)                   \
+  static void write##name(SOCKET _s, uint16_t _data) {       \
+    writeSn(_s, address,   _data >> 8);                      \
+    writeSn(_s, address+1, _data & 0xFF);                    \
+  }                                                          \
+  static uint16_t read##name(SOCKET _s) {                    \
+    uint16_t res = readSn(_s, address);                      \
+    res = (res << 8) + readSn(_s, address + 1);              \
+    return res;                                              \
+  }
+#endif  
+#define __SOCKET_REGISTER_N(name, address, size)             \
+  static uint16_t write##name(SOCKET _s, uint8_t *_buff) {   \
+    return writeSn(_s, address, _buff, size);                \
+  }                                                          \
+  static uint16_t read##name(SOCKET _s, uint8_t *_buff) {    \
+    return readSn(_s, address, _buff, size);                 \
+  }
+  
+public:
+  __SOCKET_REGISTER8(SnMR,        0x0000)        // Mode
+  __SOCKET_REGISTER8(SnCR,        0x0001)        // Command
+  __SOCKET_REGISTER8(SnIR,        0x0002)        // Interrupt
+  __SOCKET_REGISTER8(SnSR,        0x0003)        // Status
+  __SOCKET_REGISTER16(SnPORT,     0x0004)        // Source Port
+  __SOCKET_REGISTER_N(SnDHAR,     0x0006, 6)     // Destination Hardw Addr
+  __SOCKET_REGISTER_N(SnDIPR,     0x000C, 4)     // Destination IP Addr
+  __SOCKET_REGISTER16(SnDPORT,    0x0010)        // Destination Port
+  __SOCKET_REGISTER16(SnMSSR,     0x0012)        // Max Segment Size
+  __SOCKET_REGISTER8(SnPROTO,     0x0014)        // Protocol in IP RAW Mode
+  __SOCKET_REGISTER8(SnTOS,       0x0015)        // IP TOS
+  __SOCKET_REGISTER8(SnTTL,       0x0016)        // IP TTL
+  __SOCKET_REGISTER16(SnTX_FSR,   0x0020)        // TX Free Size
+  __SOCKET_REGISTER16(SnTX_RD,    0x0022)        // TX Read Pointer
+  __SOCKET_REGISTER16(SnTX_WR,    0x0024)        // TX Write Pointer
+  __SOCKET_REGISTER16(SnRX_RSR,   0x0026)        // RX Free Size
+  __SOCKET_REGISTER16(SnRX_RD,    0x0028)        // RX Read Pointer
+  __SOCKET_REGISTER16(SnRX_WR,    0x002A)        // RX Write Pointer (supported?)
+  
+#undef __SOCKET_REGISTER8
+#undef __SOCKET_REGISTER16
+#undef __SOCKET_REGISTER_N
+
+
+private:
+  static const uint8_t  RST = 7; // Reset BIT
+  static const int SOCKETS = 8;
+
+public:
+  static const uint16_t SSIZE = 2048; // Max Tx buffer size
+private:
+  static const uint16_t RSIZE = 2048; // Max Rx buffer size
+
+private:
+  // could do inline optimizations
+  static inline void initSS()  { pinMode(SPI_CS, OUTPUT); }
+  static inline void setSS()   {  digitalWrite(SPI_CS, LOW); }
+  static inline void resetSS() {  digitalWrite(SPI_CS, HIGH); }
+};
+
+extern W5500Class w5500;
+
+uint8_t W5500Class::readSn(SOCKET _s, uint16_t _addr) {
+    uint8_t cntl_byte = (_s<<5)+0x08;
+    return read(_addr, cntl_byte);
+}
+
+uint8_t W5500Class::writeSn(SOCKET _s, uint16_t _addr, uint8_t _data) {
+    uint8_t cntl_byte = (_s<<5)+0x0C;
+    return write(_addr, cntl_byte, _data);
+}
+
+uint16_t W5500Class::readSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t _len) {
+    uint8_t cntl_byte = (_s<<5)+0x08;
+    return read(_addr, cntl_byte, _buf, _len );
+}
+
+uint16_t W5500Class::writeSn(SOCKET _s, uint16_t _addr, uint8_t *_buf, uint16_t _len) {
+    uint8_t cntl_byte = (_s<<5)+0x0C;
+    return write(_addr, cntl_byte, _buf, _len);
+}
+
+void W5500Class::getGatewayIp(uint8_t *_addr) {
+  readGAR(_addr);
+}
+
+void W5500Class::setGatewayIp(uint8_t *_addr) {
+  writeGAR(_addr);
+}
+
+void W5500Class::getSubnetMask(uint8_t *_addr) {
+  readSUBR(_addr);
+}
+
+void W5500Class::setSubnetMask(uint8_t *_addr) {
+  writeSUBR(_addr);
+}
+
+void W5500Class::getMACAddress(uint8_t *_addr) {
+  readSHAR(_addr);
+}
+
+void W5500Class::setMACAddress(uint8_t *_addr) {
+  writeSHAR(_addr);
+}
+
+void W5500Class::getIPAddress(uint8_t *_addr) {
+  readSIPR(_addr);
+}
+
+void W5500Class::setIPAddress(uint8_t *_addr) {
+  writeSIPR(_addr);
+}
+
+void W5500Class::setRetransmissionTime(uint16_t _timeout) {
+  writeRTR(_timeout);
+}
+
+void W5500Class::setRetransmissionCount(uint8_t _retry) {
+  writeRCR(_retry);
+}
+
+void W5500Class::setPHYCFGR(uint8_t _val) {
+  writePHYCFGR(_val);
+}
+
+uint8_t W5500Class::getPHYCFGR() {
+//  readPHYCFGR();
+  return read(0x002E, 0x00);
+}
+
+void W5500Class::swReset() {
+  writeMR( (readMR() | 0x80) );
+}
+
+#endif

libraries/MsTimer2/MsTimer2.cpp

@@ -0,0 +1,220 @@
+/*
+  MsTimer2.h - Using timer2 with 1ms resolution
+  Javier Valencia <javiervalencia80@gmail.com>
+
+  https://github.com/PaulStoffregen/MsTimer2
+  
+  History:
+	6/Jun/14  - V0.7 added support for Teensy 3.0 & 3.1
+  	29/Dec/11 - V0.6 added support for ATmega32u4, AT90USB646, AT90USB1286 (paul@pjrc.com)
+		some improvements added by Bill Perry
+		note: uses timer4 on Atmega32u4
+  	29/May/09 - V0.5 added support for Atmega1280 (thanks to Manuel Negri)
+  	19/Mar/09 - V0.4 added support for ATmega328P (thanks to Jerome Despatis)
+  	11/Jun/08 - V0.3 
+  		changes to allow working with different CPU frequencies
+  		added support for ATMega128 (using timer2)
+  		compatible with ATMega48/88/168/8
+	10/May/08 - V0.2 added some security tests and volatile keywords
+	9/May/08 - V0.1 released working on ATMEGA168 only
+	
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include <MsTimer2.h>
+
+unsigned long MsTimer2::msecs;
+void (*MsTimer2::func)();
+volatile unsigned long MsTimer2::count;
+volatile char MsTimer2::overflowing;
+volatile unsigned int MsTimer2::tcnt2;
+#if defined(__arm__) && defined(TEENSYDUINO)
+static IntervalTimer itimer;
+#endif
+
+void MsTimer2::set(unsigned long ms, void (*f)()) {
+	float prescaler = 0.0;
+	
+	if (ms == 0)
+		msecs = 1;
+	else
+		msecs = ms;
+		
+	func = f;
+
+#if defined (__AVR_ATmega168__) || defined (__AVR_ATmega48__) || defined (__AVR_ATmega88__) || defined (__AVR_ATmega328P__) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
+	TIMSK2 &= ~(1<<TOIE2);
+	TCCR2A &= ~((1<<WGM21) | (1<<WGM20));
+	TCCR2B &= ~(1<<WGM22);
+	ASSR &= ~(1<<AS2);
+	TIMSK2 &= ~(1<<OCIE2A);
+	
+	if ((F_CPU >= 1000000UL) && (F_CPU <= 16000000UL)) {	// prescaler set to 64
+		TCCR2B |= (1<<CS22);
+		TCCR2B &= ~((1<<CS21) | (1<<CS20));
+		prescaler = 64.0;
+	} else if (F_CPU < 1000000UL) {	// prescaler set to 8
+		TCCR2B |= (1<<CS21);
+		TCCR2B &= ~((1<<CS22) | (1<<CS20));
+		prescaler = 8.0;
+	} else { // F_CPU > 16Mhz, prescaler set to 128
+		TCCR2B |= ((1<<CS22) | (1<<CS20));
+		TCCR2B &= ~(1<<CS21);
+		prescaler = 128.0;
+	}
+#elif defined (__AVR_ATmega8__)
+	TIMSK &= ~(1<<TOIE2);
+	TCCR2 &= ~((1<<WGM21) | (1<<WGM20));
+	TIMSK &= ~(1<<OCIE2);
+	ASSR &= ~(1<<AS2);
+	
+	if ((F_CPU >= 1000000UL) && (F_CPU <= 16000000UL)) {	// prescaler set to 64
+		TCCR2 |= (1<<CS22);
+		TCCR2 &= ~((1<<CS21) | (1<<CS20));
+		prescaler = 64.0;
+	} else if (F_CPU < 1000000UL) {	// prescaler set to 8
+		TCCR2 |= (1<<CS21);
+		TCCR2 &= ~((1<<CS22) | (1<<CS20));
+		prescaler = 8.0;
+	} else { // F_CPU > 16Mhz, prescaler set to 128
+		TCCR2 |= ((1<<CS22) && (1<<CS20));
+		TCCR2 &= ~(1<<CS21);
+		prescaler = 128.0;
+	}
+#elif defined (__AVR_ATmega128__)
+	TIMSK &= ~(1<<TOIE2);
+	TCCR2 &= ~((1<<WGM21) | (1<<WGM20));
+	TIMSK &= ~(1<<OCIE2);
+	
+	if ((F_CPU >= 1000000UL) && (F_CPU <= 16000000UL)) {	// prescaler set to 64
+		TCCR2 |= ((1<<CS21) | (1<<CS20));
+		TCCR2 &= ~(1<<CS22);
+		prescaler = 64.0;
+	} else if (F_CPU < 1000000UL) {	// prescaler set to 8
+		TCCR2 |= (1<<CS21);
+		TCCR2 &= ~((1<<CS22) | (1<<CS20));
+		prescaler = 8.0;
+	} else { // F_CPU > 16Mhz, prescaler set to 256
+		TCCR2 |= (1<<CS22);
+		TCCR2 &= ~((1<<CS21) | (1<<CS20));
+		prescaler = 256.0;
+	}
+#elif defined (__AVR_ATmega32U4__)
+	TCCR4B = 0;
+	TCCR4A = 0;
+	TCCR4C = 0;
+	TCCR4D = 0;
+	TCCR4E = 0;
+	if (F_CPU >= 16000000L) {
+		TCCR4B = (1<<CS43) | (1<<PSR4);
+		prescaler = 128.0;
+	} else if (F_CPU >= 8000000L) {
+		TCCR4B = (1<<CS42) | (1<<CS41) | (1<<CS40) | (1<<PSR4);
+		prescaler = 64.0;
+	} else if (F_CPU >= 4000000L) {
+		TCCR4B = (1<<CS42) | (1<<CS41) | (1<<PSR4);
+		prescaler = 32.0;
+	} else if (F_CPU >= 2000000L) {
+		TCCR4B = (1<<CS42) | (1<<CS40) | (1<<PSR4);
+		prescaler = 16.0;
+	} else if (F_CPU >= 1000000L) {
+		TCCR4B = (1<<CS42) | (1<<PSR4);
+		prescaler = 8.0;
+	} else if (F_CPU >= 500000L) {
+		TCCR4B = (1<<CS41) | (1<<CS40) | (1<<PSR4);
+		prescaler = 4.0;
+	} else {
+		TCCR4B = (1<<CS41) | (1<<PSR4);
+		prescaler = 2.0;
+	}
+	tcnt2 = (int)((float)F_CPU * 0.001 / prescaler) - 1;
+	OCR4C = tcnt2;
+	return;
+#elif defined(__arm__) && defined(TEENSYDUINO)
+	// nothing needed here
+#else
+#error Unsupported CPU type
+#endif
+
+	tcnt2 = 256 - (int)((float)F_CPU * 0.001 / prescaler);
+}
+
+void MsTimer2::start() {
+	count = 0;
+	overflowing = 0;
+#if defined (__AVR_ATmega168__) || defined (__AVR_ATmega48__) || defined (__AVR_ATmega88__) || defined (__AVR_ATmega328P__) || defined (__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
+	TCNT2 = tcnt2;
+	TIMSK2 |= (1<<TOIE2);
+#elif defined (__AVR_ATmega128__)
+	TCNT2 = tcnt2;
+	TIMSK |= (1<<TOIE2);
+#elif defined (__AVR_ATmega8__)
+	TCNT2 = tcnt2;
+	TIMSK |= (1<<TOIE2);
+#elif defined (__AVR_ATmega32U4__)
+	TIFR4 = (1<<TOV4);
+	TCNT4 = 0;
+	TIMSK4 = (1<<TOIE4);
+#elif defined(__arm__) && defined(TEENSYDUINO)
+	itimer.begin(MsTimer2::_overflow, 1000);
+#endif
+}
+
+void MsTimer2::stop() {
+#if defined (__AVR_ATmega168__) || defined (__AVR_ATmega48__) || defined (__AVR_ATmega88__) || defined (__AVR_ATmega328P__) || defined (__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
+	TIMSK2 &= ~(1<<TOIE2);
+#elif defined (__AVR_ATmega128__)
+	TIMSK &= ~(1<<TOIE2);
+#elif defined (__AVR_ATmega8__)
+	TIMSK &= ~(1<<TOIE2);
+#elif defined (__AVR_ATmega32U4__)
+	TIMSK4 = 0;
+#elif defined(__arm__) && defined(TEENSYDUINO)
+	itimer.end();
+#endif
+}
+
+void MsTimer2::_overflow() {
+	count += 1;
+	
+	if (count >= msecs && !overflowing) {
+		overflowing = 1;
+		count = count - msecs; // subtract ms to catch missed overflows
+					// set to 0 if you don't want this.
+		(*func)();
+		overflowing = 0;
+	}
+}
+
+#if defined (__AVR__)
+#if defined (__AVR_ATmega32U4__)
+ISR(TIMER4_OVF_vect) {
+#else
+ISR(TIMER2_OVF_vect) {
+#endif
+#if defined (__AVR_ATmega168__) || defined (__AVR_ATmega48__) || defined (__AVR_ATmega88__) || defined (__AVR_ATmega328P__) || defined (__AVR_ATmega1280__) || defined(__AVR_ATmega2560__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
+	TCNT2 = MsTimer2::tcnt2;
+#elif defined (__AVR_ATmega128__)
+	TCNT2 = MsTimer2::tcnt2;
+#elif defined (__AVR_ATmega8__)
+	TCNT2 = MsTimer2::tcnt2;
+#elif defined (__AVR_ATmega32U4__)
+	// not necessary on 32u4's high speed timer4
+#endif
+	MsTimer2::_overflow();
+}
+#endif // AVR
+

libraries/MsTimer2/MsTimer2.h

@@ -0,0 +1,25 @@
+#ifndef MsTimer2_h
+#define MsTimer2_h
+
+#ifdef __AVR__
+#include <avr/interrupt.h>
+#elif defined(__arm__) && defined(TEENSYDUINO)
+#include <Arduino.h>
+#else
+#error MsTimer2 library only works on AVR architecture
+#endif
+
+namespace MsTimer2 {
+	extern unsigned long msecs;
+	extern void (*func)();
+	extern volatile unsigned long count;
+	extern volatile char overflowing;
+	extern volatile unsigned int tcnt2;
+	
+	void set(unsigned long ms, void (*f)());
+	void start();
+	void stop();
+	void _overflow();
+}
+
+#endif

libraries/MsTimer2/README.md

@@ -0,0 +1,7 @@
+#MsTimer2 Library#
+
+Run a function every millisecond.
+
+http://www.pjrc.com/teensy/td_libs_MsTimer2.html
+
+Originally written by Javier Valencia

libraries/MsTimer2/examples/FlashLed/FlashLed.pde

@@ -0,0 +1,36 @@
+/*
+  MsTimer2 is a small and very easy to use library to interface Timer2 with
+  humans. It's called MsTimer2 because it "hardcodes" a resolution of 1
+  millisecond on timer2
+  For Details see: http://www.arduino.cc/playground/Main/MsTimer2
+*/
+#include <MsTimer2.h>
+
+// Switch on LED on and off each half second
+
+#if ARDUINO >= 100
+const int led_pin = LED_BUILTIN;	// 1.0 built in LED pin var
+#else
+const int led_pin = 13;			// default to pin 13
+#endif
+
+
+void flash()
+{
+  static boolean output = HIGH;
+  
+  digitalWrite(led_pin, output);
+  output = !output;
+}
+
+void setup()
+{
+  pinMode(led_pin, OUTPUT);
+
+  MsTimer2::set(500, flash); // 500ms period
+  MsTimer2::start();
+}
+
+void loop()
+{
+}

libraries/MsTimer2/keywords.txt

@@ -0,0 +1,4 @@
+MsTimer2	KEYWORD1
+set	KEYWORD2
+start	KEYWORD2
+stop	KEYWORD2

libraries/MsTimer2/library.json

@@ -0,0 +1,25 @@
+{
+  "name": "MsTimer2",
+  "keywords": "timer, callback",
+  "description": "MsTimer2 is a small and very easy to use library to interface Timer2 with humans. It's called MsTimer2 because it \"hardcodes\" a resolution of 1 millisecond on timer2.",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/PaulStoffregen/MsTimer2.git"
+  },
+  "authors": [{
+    "name": "Javier Valencia",
+    "email": "javiervalencia80@gmail.com",
+    "url": "http://www.pjrc.com/teensy/td_libs_MsTimer2.html"
+  }, {
+    "name": "Paul Stoffregen",
+    "url": "https://www.pjrc.com/about/",
+    "maintainer": true
+  }],
+  "frameworks": [
+    "arduino"
+  ],
+  "platforms": [
+    "atmelavr",
+    "teensy"
+  ]
+}

libraries/MsTimer2/library.properties

@@ -0,0 +1,10 @@
+name=MsTimer2
+version=1.1
+author=Javier Valencia
+maintainer=Paul Stoffregen
+sentence=Run an interrupt function using Timer2
+paragraph=
+category=Timing
+url=http://playground.arduino.cc/Main/MsTimer2
+architectures=*
+

libraries/Scitech/Sc_AnalogIn.cpp

@@ -0,0 +1,28 @@
+/*
+  MsTimer2.h - Using timer2 with 1ms resolution
+  Javier Valencia <javiervalencia80@gmail.com>
+
+  https://github.com/PaulStoffregen/MsTimer2
+  
+  History:
+	20230504 - V0.2 
+	20230504 - V0.1 init.
+
+*/
+
+#include <Sc_AnalogIn.h>
+
+void AnalogIn(int arr[], int size){
+  cli();//stop interrupts
+  
+  int i = 0;
+  for(i = 0 ; i < size ; i++){
+	arr[i] = i;
+  }
+  sei();//allow interrupts
+}
+
+int AnalogTest(int i){
+	
+	return i+4;
+}

libraries/Scitech/Sc_AnalogIn.h

@@ -0,0 +1,12 @@
+#ifndef Sc_AnalogIn_h
+#define Sc_AnalogIn_h
+
+void AnalogIn(int arr[], int size);
+int AnalogTest(int i);
+#endif
+
+#ifdef __AVR__
+#include <avr/interrupt.h>
+#elif defined(__arm__) && defined(TEENSYDUINO)
+#include <Arduino.h>
+#endif