RfComm.java

/*
Copyright 2011 Alex Redaelli

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

package net.hgw4.bt;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;


public class RfComm {
    public String curBtAddr = "";
    public StreamConnection connection = null;
    public OutputStream out = null;
    public InputStream in = null;
    public int byte_read = 0;
    public byte msgRcvd[] = new byte[100];

    
    /**
     * 
     * @param btaddr
     */
    public RfComm(String btaddr) {
        curBtAddr = btaddr;
        initCom();
         
    }
    
    
    /**
     * init comm
     */
    public void initCom() {
        try {
                //btgoep://0019639C4007:6 for OBEX or btspp://00A096169D05:1;authenticate=false;encrypt=false;master=false for serial
                connection = (StreamConnection) Connector.open("btspp://" + curBtAddr + ":1");
                out = connection.openOutputStream();
                in = connection.openInputStream();
                
                } catch (IOException ex) {
                Logger.getLogger(RfComm.class.getName()).log(Level.SEVERE, null, ex);
            }
    }
    
    
    /**
     *  end comm
     */
    public void endCom(){
        if (in != null && out !=null){
            try {
                in.close();
                out.close();
            } catch (IOException ex) {
                Logger.getLogger(RfComm.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }

    
    /**
     *  send a message
     * @param msg
     */
    public void sndMsg(byte[] msg){
        try {
            System.out.println("--> send msg:");
            printBytes(msg);
            System.out.println("");
            out.write(msg); 
        } catch (IOException ex) {
            Logger.getLogger(RfComm.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * get number of received bytes
     * @return
     */
    public int getByteRead(){
      System.out.println("--> byte read:" + byte_read); 
      System.out.println("");
      return byte_read;    
    }

    
    /**
     * receive a message
     * @return
     */
    public byte[] rcvMsg(){
        try {
          byte_read = in.read(msgRcvd);
          System.out.println("--> recv msg:");
          printBytes(msgRcvd);
          System.out.println("");
        } catch (IOException ex) {
            Logger.getLogger(RfComm.class.getName()).log(Level.SEVERE, null, ex);
        }
        
        return msgRcvd;
    }
    
    public void printBytes(byte toprint[]){
        for (int i = 0; i < toprint.length; i++) {
            System.out.print(Integer.toString(toprint[i] & 0xFF, 16));
        }
    }
    
    
    
}