package earth_survy;
import java.util.*;
import javax.microedition.io.*;
import java.io.*;
import com.sun.kjava.*;
import com.sun.cldc.io.palm.comm.*;

public class PrintMe extends Spotlet {


        static Graphics g=Graphics.getGraphics();
        static Protocol serialPort = new Protocol();
        static String url="0;baudrate=4800;bitsperchar=8;stopbits=1;parity=none;autorts=off;autocts=off;blocking=off";
  //      static String url="comm:0;baudrate=4800;bitsperchar=8;stopbits=1;parity=none";
        static InputStream is;


// Open the serial Port for Gps Data Input

public boolean openPort(){
      try {
           serialPort.open(url,1, true);
           is=serialPort.openInputStream();
          return true;
      }
      catch (Exception ex) {
          return false;
      }
 }

 //Close the serial Port

 public boolean closePort(){
   try {
         is.close();
         serialPort.close();
         return true;
   }
   catch (Exception ex) {
         return false;
   }
 }

 //Read the GPS data
 //Mark is "$GPRMC
 //rdLen is the buffer length
 //getlen is the return lenth;

 public String readGpsData(String mark,int rdlen,int getlen){
    byte[] readBuffer = new byte[rdlen];
    String rawGpsData;
    String Gprmc;

 while (true){
    try{
         //Read raw GPS data into a buffer;
          is.read(readBuffer);
          rawGpsData=new String(readBuffer);
         //determin the positon of  the Mark==> $GPRMC;
         int pos=rawGpsData.indexOf(mark);
         if (pos>-1)
            {
               Gprmc=rawGpsData.substring(pos);
               if (Gprmc.length()>getlen)
                {
                  Gprmc=Gprmc.substring(0,getlen);
                 break;
                 }
                }

       }
    catch(Exception e){
         // System.out.println( );

        }
}
return Gprmc;
//end loop
}//end method
}