The file that is currently on an Arduino Uno with a serial number of 6413138333135171C0E0

MyMultiPing.ino

/*
  Repeatedly ping a number of servers and output the response to serial and pins 2,3,4

  pin 2: ping request sent
  pin 3: ping response received
  pin 4: ping response not received

  This software requires the ICMPPing library, available at
    http://www.blake-foster.com/projects/ICMPPing.zip

  Portions of this code were derived from code available at
    http://www.blake-foster.com/project.php?p=44
  My thanks go to Blake for his hard work.

  If you do not wish to output to the serial port, comment out the line
    #define serialOut 1
  If you do not wish to output to the LEDs, comment out the line
    #define ledOut 1

  The lines 
    byte ip[] = {192,168,0,177}; // ip address for ethernet shield
    byte pingAddr[] = {91,121,5,142}; // ip address to ping
  need to be changed to suit your own needs.  If your network has DHCP the arduino
  will automatically grab an IP address for itself.
*/

#define lcdOut 1

#include <SPI.h>
#include <Ethernet.h>
#include <ICMPPing.h>
#ifdef lcdOut
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(8, 7, 5, 4, 3, 2);
#endif

byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED}; // mac address for ethernet shield
byte ip[] = {192,168,0,177}; // ip address for ethernet shield
byte pingAddr[8][4] = { {91,121,5,142}, {91,121,5,143}, {91,121,5,144}, {91,121,5,145}, {91,121,5,146}, {91,121,5,147}, {91,121,5,148}, {91,121,5,149} }; // ip address to ping
int numAddresses = 8;

SOCKET pingSocket = 0;

char buffer [256];

int delayMS = 60 * 1000; // delay between successive pings (60 * 1000 = 60 seconds)

#define serialOut 1
//#define ledOut 1

#ifdef ledOut
  #define ledPing 2
  #define ledOk 3
  #define ledFail 4

void startPing()
{
  digitalWrite(ledPing, HIGH);
}

void endPing()
{
  digitalWrite(ledPing, LOW);
}

void pingSuccess()
{
  digitalWrite(ledFail, LOW);
  digitalWrite(ledOk, HIGH);
}

void pingFail()
{
  digitalWrite(ledFail, HIGH);
  digitalWrite(ledOk, LOW);
}
#endif

void setup()
{
#ifdef lcdOut
  lcd.begin(16, 2);
  lcd.blink();
  lcd.clear();
  int x;
  sprintf(buffer, "                ");
  for(x = 0; x < numAddresses; x++)
  if(x < 9)
    buffer[x] = '1' + x;
  else
    buffer[x]= 'A' + (x - 10);
  //buffer[numAddresses] = 0;
  lcd.print(buffer);
#endif
  
#ifdef ledOut
  pinMode(ledPing, OUTPUT);
  pinMode(ledOk, OUTPUT);
  pinMode(ledFail, OUTPUT);
  
  // initialising, turn all LEDs on
  digitalWrite(ledFail, HIGH);
  digitalWrite(ledOk, HIGH);
  digitalWrite(ledPing, HIGH);
#endif

#ifdef serialOut
  // start serial port:
  Serial.begin(9600);
  Serial.println("Starting ethernet connection");
#endif
  // start Ethernet
  if (Ethernet.begin(mac) == 0) {
#ifdef serialOut
    Serial.println("Failed to configure Ethernet using DHCP");
#endif
    // DHCP failed, so use a fixed IP address:
    Ethernet.begin(mac, ip);
  }
}

int i = 0;

void loop()
{
  bool pingRet; // pingRet stores the ping() success (true/false)
#ifdef ledOut
  startPing();
#endif

#ifdef lcdOut
  lcd.setCursor(i,1);
  //delay(1000);
#endif

  ICMPPing ping(pingSocket);
  byte pingAddr2[] = { pingAddr[i][0], pingAddr[i][1], pingAddr[i][2], pingAddr[i][3] };
  pingRet = ping(4, pingAddr2, buffer);
#ifdef ledOut
  delay(250);
  endPing();
#endif

#ifdef serialOut  
  Serial.print("i:");
  Serial.print(i);
  Serial.print("  ");
  Serial.println(buffer);
#endif

#ifdef lcdOut
  if(pingRet) // Failure
    lcd.print("U");
  else
    lcd.print("D");
#endif

#ifdef ledOut
  if(pingRet) // Failure
    pingSuccess();
  else
    pingFail();  
#endif
 i++;
 if(i >= numAddresses)
 {
   i = 0;
   //delay(delayMS);
 }
}