Import Time version 1.3 (from March 24, 2012)

examples/Processing/SyncArduinoClock/SyncArduinoClock.pde

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+/**
+ * SyncArduinoClock. 
+ *
+ * portIndex must be set to the port connected to the Arduino
+ * 
+ * The current time is sent in response to request message from Arduino 
+ * or by clicking the display window 
+ *
+ * The time message is 11 ASCII text characters; a header (the letter 'T')
+ * followed by the ten digit system time (unix time)
+ */
+ 
+
+import processing.serial.*;
+import java.util.Date;
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+
+public static final short portIndex = 0;  // select the com port, 0 is the first port
+public static final String TIME_HEADER = "T"; //header for arduino serial time message 
+public static final char TIME_REQUEST = 7;  // ASCII bell character 
+public static final char LF = 10;     // ASCII linefeed
+public static final char CR = 13;     // ASCII linefeed
+Serial myPort;     // Create object from Serial class
+
+void setup() {  
+  size(200, 200);
+  println(Serial.list());
+  println(" Connecting to -> " + Serial.list()[portIndex]);
+  myPort = new Serial(this,Serial.list()[portIndex], 9600);
+  println(getTimeNow());
+}
+
+void draw()
+{
+  textSize(20);
+  textAlign(CENTER);
+  fill(0);
+  text("Click to send\nTime Sync", 0, 75, 200, 175);
+  if ( myPort.available() > 0) {  // If data is available,
+    char val = char(myPort.read());         // read it and store it in val
+    if(val == TIME_REQUEST){
+       long t = getTimeNow();
+       sendTimeMessage(TIME_HEADER, t);   
+    }
+    else
+    { 
+       if(val == LF)
+           ; //igonore
+       else if(val == CR)           
+         println();
+       else  
+         print(val); // echo everying but time request
+    }
+  }  
+}
+
+void mousePressed() {  
+  sendTimeMessage( TIME_HEADER, getTimeNow());   
+}
+
+
+void sendTimeMessage(String header, long time) {  
+  String timeStr = String.valueOf(time);  
+  myPort.write(header);  // send header and time to arduino
+  myPort.write(timeStr); 
+  myPort.write('\n');  
+}
+
+long getTimeNow(){
+  // java time is in ms, we want secs    
+  Date d = new Date();
+  Calendar cal = new GregorianCalendar();
+  long current = d.getTime()/1000;
+  long timezone = cal.get(cal.ZONE_OFFSET)/1000;
+  long daylight = cal.get(cal.DST_OFFSET)/1000;
+  return current + timezone + daylight; 
+}

examples/Processing/SyncArduinoClock/readme.txt

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+SyncArduinoClock is a Processing sketch that responds to Arduino requests for 
+time synchronization messages.
+
+The portIndex must be set the Serial port connected to Arduino.
+
+Download TimeSerial.pde onto Arduino and you should see the time 
+message displayed when you run SyncArduinoClock in Processing.
+The Arduino time is set from the time on your computer through the 
+Processing sketch.