OOBDFlashHandler.java

import java.io.IOException;
import java.util.Enumeration;
import java.util.Vector;
import javax.bluetooth.*;
import java.io.*;
import javax.microedition.io.*;





class OOBDFlashHandler {

    static StreamConnection con = null;
    static OutputStream os = null;
    static InputStream is = null;

    public static boolean examine(OOBDDongleDescriptor dongle) {

        try {
            System.out.print(".");
            con =
                (StreamConnection) Connector.open(dongle.url,Connector.READ_WRITE,true);
            os = con.openOutputStream();
            is = con.openInputStream();
            byte buffer[] = new byte[1024];
            int bytes_read;
            String greeting = "p 0 0 0\r";
            os.write("\r\rp 0 0 0\r".getBytes());
            sleep(200);
            while (is.available()>0) {
                is.read(buffer);
                sleep(200);
            }
            echoWrite( greeting);
            String received = readln();
            echoWrite( greeting);
            received = readln();
            received=received.replace("\r","\n");
            String[] temp = received.split("\\s+");
            /* print substrings */
            /*
                for(int i =0; i < temp.length ; i++) {
                    System.out.println(Integer.toString(i)+":"+ temp[i]);
                }
                */
            if (temp.length>4 && "OOBD".equals(temp[0])) {
                dongle.hardwareID=temp[1];
                dongle.revision=temp[2];
                dongle.design=temp[3];
                dongle.layout=temp[4];

                return true;
            } else {
                return false;
            }

        } catch ( IOException e ) {
            System.err.print(e.toString());
            return false;
        }

    }


    public static boolean switchToFlashMode(OOBDDongleDescriptor dongle) {

        int runstatus=3;
        try {
            con =
                (StreamConnection) Connector.open(dongle.url,Connector.READ_WRITE,true);
            os = con.openOutputStream();
            is = con.openInputStream();
            byte buffer[] = new byte[1024];
            int bytes_read;
            while(runstatus>0) {
                os.write("\r\n".getBytes());
                sleep(500);

                String received = readln();
                received=received.replace("\r","\n");

                String[] temp = received.split("\\s+");
                if (temp.length>0 & temp[temp.length-1].equals(">")) {
                    System.out.print("Firmware found-");
                    echoWrite("p 0 99 2\r");
                    sleep(100);
                    echoWrite("fff");
                    received=readln();
                    echoWrite("\r\r\r");
                    sleep(1000);
                    received=readln();
                    echoWrite("\r");
                    sleep(1000);
                    received=readln();
                    temp = received.split("\\s+");
                }
                if (temp.length>0 & temp[temp.length-1].equals("OOBD-Flashloader>")) {
                    System.out.print("bootloader active-");
                    System.out.println("try to start firmware again");
                    echoWrite("3");
                    return true;

                } else {
                    runstatus -= 1; // reduce the trial conter by 1
                    if (runstatus==1) { // it seems serious, the dongle does not answer. Last chance is to kill a potential running ymodem- transfer..
                        //Try to send YMODEM cancel signal 0x18 a few times..
                        os.write("\u0018\u0018\u0018\u0018\u0018\u0018".getBytes());
                        // Try to send YMODEM cancel signal 'a' a few times..
                        os.write("aaaa".getBytes());
                    }
                }

            }
        } catch ( IOException e ) {
            System.err.print(e.toString());
            return false;
        }
        return false;
    }

    public InputStream getInputStream() {
        return is;
    }


    public OutputStream getOutputStream() {
        return os;
    }

    public static void sleep(int millisecs) {
        try {
            Thread.sleep(millisecs);
        } catch(InterruptedException ex) {
            Thread.currentThread().interrupt();
        }

    }



    public static void close() {
        try {
            if (os!=null) {
                os.close();
                os=null;
            }
            if (is!=null) {
                is.close();
                is=null;
            }
            if (con!=null) {
                con.close();
                con=null;
            }
        } catch ( IOException ex ) {
            ex.printStackTrace();
        }
    }

    public static String readln() {
        boolean recvDone=false;
        String res="";
        byte buffer[] = new byte[1024];
        int bytes_read;
        while(! recvDone) {
            try {
                int ready = is.available();
                if (ready==0) {
                    sleep(500);
                }
                ready = is.available();
                if (ready!=0) {
                    bytes_read = is.read( buffer );
                    res = res + new String(buffer, 0, bytes_read);
                    recvDone=res.substring(res.length() - 1).equals("\r");
                } else {
                    recvDone=true;
                }
            } catch ( IOException ex ) {
                ex.printStackTrace();
            }
        }
        return res;
    }

    public static void echoWrite(String cmd) {
        byte buffer[] = new byte[1024];
        int bytes_read;
        try {
            os.flush();
            os.write(cmd.getBytes());
            bytes_read = is.read( buffer, 0 ,cmd.length() );
        } catch ( IOException ex ) {
            ex.printStackTrace();
        }

    }


}