Android Open Source - RC-Devices Bluetooth Link Receiver

• Back to Development/arduino  ↑

From Project

Back to project page RC-Devices.

License

The source code is released under:

GNU General Public License

Java Source Code

package pl.apcode.rcdevices.communication;
//from   www  .  j  a  va2s.  c  om
import pl.apcode.rcdevices.EventLogger;
import pl.apcode.rcdevices.communication.BluetoothLinkServiceHandler.MsgType;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.InterruptedIOException;
import java.net.SocketException;

import android.app.Application;
import android.bluetooth.BluetoothSocket;
import android.content.Context;
import android.content.Intent;
import android.os.Handler;

public class BluetoothLinkReceiver extends Thread {
      public static final String tag = BluetoothLinkReceiver.class.getSimpleName();
        
      private final Handler h;
        private final BluetoothSocket socket;
        private final Context ctx;
        private byte[] buffer = new byte[256];  // buffer store for the stream
        int cmdPos = 0;
        
        private InputStream inStream;
        
        public BluetoothLinkReceiver(BluetoothSocket socket, Handler serviceHandler, Context ctx) {
            super(tag);
          this.socket = socket;
          this.ctx = ctx;
            h=serviceHandler;
        }
      

        private boolean isEndOfCommand(byte ch) {
          if(ch == '\n' || ch == ';')
            return true;
          else
            return false;
        }
        
        private void sendCommand() {
          if(cmdPos > 0) {
            String cmd = new String(buffer, 0, cmdPos);
            EventLogger.d(tag, "Command from Arduino: " + cmd);
            
            Intent intent = new Intent(BluetoothLinkService.RECEIVED_CMD);
            
            intent.putExtra("ReceiverData", cmd);
            ctx.sendBroadcast(intent); 
          }
        }
        
        private void readCommands() throws IOException {
            while(true) {
              int readVal =  inStream.read(); 
              if(readVal < 0) {
                EventLogger.e(tag, "Exiting Receiver. End of stream.");
              } else if(readVal > 0) {
                byte ch = (byte)readVal;
                if(isEndOfCommand(ch)) {
                  sendCommand();
                  cmdPos = 0;
                } else {
                  buffer[cmdPos] = ch;
                  cmdPos++;
                  if(cmdPos >= buffer.length)
                    cmdPos = 0;
                }
              }
            }
        }
        
        
        public void run() {    
            try {
              inStream = socket.getInputStream();
              EventLogger.i(tag, "Receiver Started");
            }
             catch(IOException ex)
             {
               EventLogger.e(tag, "Exiting Receiver. Unable to get input stream.", ex);
               h.obtainMessage(MsgType.CONNECT).sendToTarget();
               return;
             }
            
            
            try {
              readCommands();  
            }
            catch (IOException e) {
                 EventLogger.e(tag, "Exiting Receiver. Error during reading input stream.", e);
                 h.obtainMessage(MsgType.CONNECT).sendToTarget();
                 return;
            }
            
        }
      
  
}

Java Source Code List

• Back to Development/arduino  ↑