Connection bluetooth master and slave with Android

Question

I send a date from my android to arduino without problem, but also i want send date from arduino to android later of received the date from android.

I have time trying it, but i can not yet, help me. My codec of arduino

char enter;
#include <SoftwareSerial.h>
SoftwareSerial conect(10,11);
void setup()
{
 pinMode(8,OUTPUT);
 conect.begin(9600);
 digitalWrite(8,LOW);
}
void loop()
{
 if(conect.available()>0)
 {
 enter=conect.read();
 if(entrada=='1')
 {
 digitalWrite(8,HIGH);
 conect.print("1");
 }
 }
}

And in the side from android this is my handler for drive the the date that arrive.

 Handler mhandler=new Handler(){
 @Override
 public void handleMessage(Message msg)
 {
 super.handleMessage(msg);
 switch (msg.what)
 {
 case CONECTADO:
 //ManejarDatos msjre = new ManejarDatos((BluetoothSocket)msg.obj);
 msjre = new ManejarDatos((BluetoothSocket)msg.obj);
 break;
 case MENSAJELEYENDO:
 byte[] readBuf = (byte[])msg.obj;
 String string = new String(readBuf,0,msg.arg1);
 Toast.makeText(getApplicationContext(), string, Toast.LENGTH_LONG).show();
 break;
 }
 }
};

And on my class for read and write i have this

private class ManejarDatos extends Thread
{
 private final OutputStream salidadatos;
 private final BluetoothSocket sockk;
 private final InputStream entradadatos;
 public ManejarDatos(BluetoothSocket socke1)
 {
 sockk=socke1;
 OutputStream temporalsalida=null;
 InputStream temporalentrada=null;
 try
 {
 temporalentrada=socke1.getInputStream();
 temporalsalida=socke1.getOutputStream();
 }catch (IOException e){}
 salidadatos=temporalsalida;
 entradadatos=temporalentrada;
 }
 public void run()
 {
 byte[] espera;
 int esperaalmacen;
 while (true) {
 try {
 espera=new byte [1024];
 esperaalmacen=entradadatos.read(espera);
 mhandler.obtainMessage(MENSAJELEYENDO,esperaalmacen,-1,espera)
 .sendToTarget();
 }catch (IOException e){break;}
 }
 }
 public void escribe(byte[] bytes)
 {
 try {
 salidadatos.write(bytes);
 //handler.obtainMessage(MENSAJE_SALIDA,-1,-1,bytes).sendToTarget();
 }catch (IOException e){
 //Log.e(TAG, "....Error al enviar dato" + e.getMessage() + "...");
 }
 }
 public void cancel()
 {
 try{
 sockk.close();
 }catch (IOException e){}
 }
}

When i push button, send a date to arduino, here my codec of button(i send 1 for bluetooth)

 Enviar.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View v) {
 String salida="1";
 msjre.escribe(salida.getBytes());
 }
 });

Answer 1

What is entrada? Replace entrada with enter in your arduino code and try again. Also try this run() code instead:

public void run()
{
 byte[] espera = new byte[1024];
 int esperaalmacen;
 while (true) {
 try {
 esperaalmacen=entradadatos.read(espera);
 mhandler.obtainMessage(MENSAJELEYENDO,esperaalmacen,-1,espera)
 .sendToTarget();
 }catch (IOException e){break;}
 }
}

• Fidel Pineda Santos: Entrada is from my class Connection(other class), that i did use when i would want connect my device with arduino

Answer 2

First try

if(conect.available()>0) { enter=conect.read(); if(1) { digitalWrite(8,HIGH); conect.print("1"); } } }

If that works, think about what entreda is and that exactly you're trying to do there.

• Fidel Pineda Santos: Sorry, your idea is the same that i have in my codec :(