raspberry pi bluetooth 连接android手机

板子：树莓派 zero wifi

系统：yocto编出的core-image-sato

安装python-pybluez：

dnf install python-pybluez

这样我们就可以：

import bluetooth

让树莓派可见并起名字为raspberry

hciconfig hci0 name "raspberry"hciconfig hci0 downhciconfig hci0 uphciconfig hci0 piscan

关键的一步：注册　Serial Port service

sudo sdptool add SP

树莓派作为server端的代码：

from bluetooth import *server_sock = BluetoothSocket(RFCOMM)server_sock.bind(("",PORT_ANY))server_sock.listen(1)port = server_sock.getsockname()[1]uuid = "94f39d29-7d6d-437d-973b-fba39e49d4ee"advertise_service(server_sock, "TestServer", service_id=uuid,service_classes=[uuid,SERIAL_PORT_CLASS],profiles=[SERIAL_PORT_PROFILE],)client_sock, client_info=server_sock.accept()print client_infotry:    while True:        data=client_sock.recv(1024)        print("received [%s]" % data)except IOError:    passprint("disconnected")client_sock.close()server_sock.close()print("all done")

Android 端：

package com.example.wrsadmin.maker_raspberry;import android.Manifest;import android.bluetooth.BluetoothAdapter;import android.bluetooth.BluetoothDevice;import android.bluetooth.BluetoothSocket;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.content.pm.PackageManager;import android.os.Build;import android.support.v4.app.ActivityCompat;import android.support.v4.content.ContextCompat;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.ListView;import android.widget.TextView;import java.io.IOException;import java.io.OutputStream;import java.util.ArrayList;import java.util.UUID;public class MainActivity extends AppCompatActivity {    ArrayList mDevicesName = new ArrayList();    ArrayList<BluetoothDevice> mArrayListDevices;    ArrayAdapter mArrayAdapter;    Button b1;    TextView tv_main;    BluetoothAdapter mBluetoothAdapter;    BluetoothDevice raspberry;    BluetoothSocket raspberry_socket;    ListView lv;    UUID uuid=UUID.fromString("94f39d29-7d6d-437d-973b-fba39e49d4ee");    BroadcastReceiver mReceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            String action = intent.getAction();            if (BluetoothDevice.ACTION_FOUND.equals(action))            {                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);                if (device.getName()!=null) {                    if (!mDevicesName.contains(device.getName())) {                        mDevicesName.add(device.getName());                        mArrayListDevices.add(device);                        if (device.getName().contains("raspberry"))                        {                            raspberry=device;                        }                        MainActivity.this.runOnUiThread(new Runnable() {                            @Override                            public void run() {                                lv.setAdapter(mArrayAdapter);                            }                        });                    }                }            }        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        lv = (ListView)findViewById(R.id.lv);        b1 = (Button)findViewById(R.id.button);        tv_main = (TextView)findViewById(R.id.textView);        mArrayListDevices = new ArrayList<BluetoothDevice>();        mArrayAdapter = new ArrayAdapter(this, R.layout.listview,R.id.textView2,mDevicesName);        // Enable Bluetooth        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();        if (!mBluetoothAdapter.isEnabled())        {            Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);            startActivityForResult(enableBtIntent,1);        }        // Get Location Permissions        if (Build.VERSION.SDK_INT >= 23)        {            if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)                    != PackageManager.PERMISSION_GRANTED){                ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);            };        }        // Register for broadcasts when a device is discovered.        IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);        registerReceiver(mReceiver,filter);        lv.setAdapter(mArrayAdapter);    }    @Override    protected void onDestroy() {        super.onDestroy();        unregisterReceiver(mReceiver);    }    public void discoveryDevices(View view) {        mDevicesName.clear();        mArrayListDevices.clear();        MainActivity.this.runOnUiThread(new Runnable() {            @Override            public void run() {                lv.setAdapter(mArrayAdapter);            }        });        if (mBluetoothAdapter.isDiscovering())        {            mBluetoothAdapter.cancelDiscovery();            mBluetoothAdapter.startDiscovery();        }        else {            mBluetoothAdapter.startDiscovery();        }    }    public void connectToRasp(View view) {        if (raspberry!=null)        {            if (raspberry_socket==null) {                try {                    raspberry_socket = raspberry.createInsecureRfcommSocketToServiceRecord(uuid);                } catch (IOException e) {                    e.printStackTrace();                }            }            if (!raspberry_socket.isConnected()) {                try {                    raspberry_socket.connect();                    MainActivity.this.runOnUiThread(new Runnable() {                        @Override                        public void run() {                            tv_main.setText("Connected to raspberry!\n");                        }                    });                } catch (IOException e) {                    e.printStackTrace();                }            }        }    }    public void Turnleft(View view)    {        if(raspberry_socket!=null) {            if (raspberry_socket.isConnected())            {                String s = "left";                byte[] buffer = s.getBytes();                try {                    OutputStream os=raspberry_socket.getOutputStream();                    os.write(buffer);                    os.flush();                } catch (Exception e)                {                    e.printStackTrace();                }            }        }    }    public void Turnright(View view)    {        if(raspberry_socket!=null) {            if (raspberry_socket.isConnected())            {                String s = "right";                byte[] buffer = s.getBytes();                try {                    OutputStream os=raspberry_socket.getOutputStream();                    os.write(buffer);                    os.flush();                } catch (Exception e)                {                    e.printStackTrace();                }            }        }    }    public void duojiStop(View view)    {        if(raspberry_socket!=null) {            if (raspberry_socket.isConnected())            {                String s = "duojistop";                byte[] buffer = s.getBytes();                try {                    OutputStream os=raspberry_socket.getOutputStream();                    os.write(buffer);                    os.flush();                } catch (Exception e)                {                    e.printStackTrace();                }            }        }    }    public void Forward(View view)    {        if(raspberry_socket!=null) {            if (raspberry_socket.isConnected())            {                String s = "forward";                byte[] buffer = s.getBytes();                try {                    OutputStream os=raspberry_socket.getOutputStream();                    os.write(buffer);                    os.flush();                } catch (Exception e)                {                    e.printStackTrace();                }            }        }    }    public void Back(View view)    {        if(raspberry_socket!=null) {            if (raspberry_socket.isConnected())            {                String s = "back";                byte[] buffer = s.getBytes();                try {                    OutputStream os=raspberry_socket.getOutputStream();                    os.write(buffer);                    os.flush();                } catch (Exception e)                {                    e.printStackTrace();                }            }        }    }    public void dianjiStop(View view)    {        if(raspberry_socket!=null) {            if (raspberry_socket.isConnected())            {                String s = "dianjistop";                byte[] buffer = s.getBytes();                try {                    OutputStream os=raspberry_socket.getOutputStream();                    os.write(buffer);                    os.flush();                } catch (Exception e)                {                    e.printStackTrace();                }            }        }    }}

关于问题：Failed to connect to SDP server on FF:FF:FF:00:00:00: No such file or directory的解法
https://bbs.archlinux.org/viewtopic.php?id=201672