将激光测距仪 (Bosch Disto GLM 50 C) 与智能手机 (Android Studio) 连接
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【中文标题】将激光测距仪 (Bosch Disto GLM 50 C) 与智能手机 (Android Studio) 连接【英文标题】：Connecting a Laser Distance Measurer (Bosch Disto GLM 50 C) with Smartphone (Android Studio) 【发布时间】：2017-03-13 22:32:44 【问题描述】：我遇到了一个特殊问题（我认为）。对于一个研究项目，我必须制作一个可以连接到激光测距仪（Bosch GLM 50 C Distometer）的 android 应用程序。到目前为止，我在 *** 和其他来源阅读了无数教程和提示。
我是 Android 新手，有点不知所措。任务是创建一个应用程序，读取博世设备上的测量距离并通过蓝牙在智能手机上显示/保存。
现在我的具体问题是：是否可以读取从蓝牙设备发送的数据（例如 2.083m）？有什么建议可以实现吗？
按照我找到的本教程，我能够与设备建立连接：
package com.test.bluetooth;
import java.io.DataInputStream;
public class Main_Activity extends Activity implements OnItemClickListener
TextView measuredValue;
ArrayAdapter<String> listAdapter;
ListView listView;
BluetoothAdapter btAdapter;
Set<BluetoothDevice> devicesArray;
ArrayList<String> pairedDevices;
ArrayList<BluetoothDevice> devices;
public static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
protected static final int SUCCESS_CONNECT = 0;
protected static final int MESSAGE_READ = 1;
IntentFilter filter;
BroadcastReceiver receiver;
String tag = "debugging";
Handler mHandler = new Handler()
@Override
public void handleMessage(Message msg)
// TODO Auto-generated method stub
Log.i(tag, "in handler");
super.handleMessage(msg);
switch(msg.what)
case SUCCESS_CONNECT:
// DO something
ConnectedThread connectedThread = new ConnectedThread((BluetoothSocket)msg.obj);
// Toast.makeText(getApplicationContext(), "VERBUNDEN", 0).show();
String s = "Verbindung erfolgreich";
connectedThread.write(s.getBytes());
Log.i(tag, "connected");
break;
case MESSAGE_READ:
byte[] readBuf = (byte[])msg.obj;
String string = new String(readBuf);
// Toast.makeText(getApplicationContext(), string, 0).show();
break;
;
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
if(btAdapter==null)
// Toast.makeText(getApplicationContext(), "Bluetooth nicht verfügbar", 0).show();
finish();
else
if(!btAdapter.isEnabled())
turnOnBT();
getPairedDevices();
startDiscovery();
private void startDiscovery()
// TODO Auto-generated method stub
btAdapter.cancelDiscovery();
btAdapter.startDiscovery();
private void turnOnBT()
// TODO Auto-generated method stub
Intent intent =new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(intent, 1);
private void getPairedDevices()
// TODO Auto-generated method stub
devicesArray = btAdapter.getBondedDevices();
if(devicesArray.size()>0)
for(BluetoothDevice device:devicesArray)
pairedDevices.add(device.getName());
private void init()
// TODO Auto-generated method stub
listView=(ListView)findViewById(R.id.listView);
listView.setOnItemClickListener(this);
listAdapter= new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,0);
listView.setAdapter(listAdapter);
btAdapter = BluetoothAdapter.getDefaultAdapter();
pairedDevices = new ArrayList<String>();
filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
devices = new ArrayList<BluetoothDevice>();
receiver = new BroadcastReceiver()
@Override
public void onReceive(Context context, Intent intent)
// TODO Auto-generated method stub
String action = intent.getAction();
if(BluetoothDevice.ACTION_FOUND.equals(action))
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
devices.add(device);
String s = "";
for(int a = 0; a < pairedDevices.size(); a++)
if(device.getName().equals(pairedDevices.get(a)))
//append
s = "Gekoppelt";
break;
listAdapter.add(device.getName()+" "+s+" "+"\n"+device.getAddress());
else if(BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action))
// run some code
else if(BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action))
// run some code
else if(BluetoothAdapter.ACTION_STATE_CHANGED.equals(action))
if(btAdapter.getState() == btAdapter.STATE_OFF)
turnOnBT();
;
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(receiver, filter);
filter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
registerReceiver(receiver, filter);
@Override
protected void onPause()
// TODO Auto-generated method stub
super.onPause();
unregisterReceiver(receiver);
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == RESULT_CANCELED)
Toast.makeText(getApplicationContext(), "Bluetooth muss aktiviert sein", Toast.LENGTH_SHORT).show();
finish();
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3)
// TODO Auto-generated method stub
if(btAdapter.isDiscovering())
btAdapter.cancelDiscovery();
if(listAdapter.getItem(arg2).contains("Gekoppelt"))
BluetoothDevice selectedDevice = devices.get(arg2);
ConnectThread connect = new ConnectThread(selectedDevice);
connect.start();
Log.i(tag, "in click listener");
else
// Toast.makeText(getApplicationContext(), "Gerät ist nicht gekoppelt", 0).show();
private class ConnectThread extends Thread
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
public ConnectThread(BluetoothDevice device)
// Use a temporary object that is later assigned to mmSocket,
// because mmSocket is final
BluetoothSocket tmp = null;
mmDevice = device;
Log.i(tag, "construct");
// Get a BluetoothSocket to connect with the given BluetoothDevice
try
// MY_UUID is the app's UUID string, also used by the server code
tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
catch (IOException e)
Log.i(tag, "get socket failed");
mmSocket = tmp;
public void run()
// Cancel discovery because it will slow down the connection
btAdapter.cancelDiscovery();
Log.i(tag, "Verbindung - läuft");
try
// Connect the device through the socket. This will block
// until it succeeds or throws an exception
mmSocket.connect();
Log.i(tag, "Verbindung - erfolgreich");
catch (IOException connectException) Log.i(tag, "connect failed");
// Unable to connect; close the socket and get out
try
mmSocket.close();
catch (IOException closeException)
return;
// Do work to manage the connection (in a separate thread)
mHandler.obtainMessage(SUCCESS_CONNECT, mmSocket).sendToTarget();
/** Will cancel an in-progress connection, and close the socket */
public void cancel()
try
mmSocket.close();
catch (IOException e)
private class ConnectedThread extends Thread
private final BluetoothSocket mmSocket;
private final InputStream mmInStream;
private final OutputStream mmOutStream;
public ConnectedThread(BluetoothSocket socket)
mmSocket = socket;
InputStream tmpIn = null;
OutputStream tmpOut = null;
// Get the input and output streams, using temp objects because
// member streams are final
try
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
catch (IOException e)
mmInStream = tmpIn;
mmOutStream = tmpOut;
public void run()
byte[] buffer; // buffer store for the stream
int bytes; // bytes returned from read()
// Keep listening to the InputStream until an exception occurs
while (true)
try
// Read from the InputStream
buffer = new byte[1024];
bytes = mmInStream.read(buffer);
// Send the obtained bytes to the UI activity
mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer)
.sendToTarget();
catch (IOException e)
break;
/* Call this from the main activity to send data to the remote device */
public void write(byte[] bytes)
try
mmOutStream.write(bytes);
catch (IOException e)
/* Call this from the main activity to shutdown the connection */
public void cancel()
try
mmSocket.close();
catch (IOException e)
在那之后，我找到了这个例子，它应该从设备读取传入的数据，但它没有工作：
try
Log.d((String) this.getTitle(), "Closing Server Socket.....");
mmServerSocket.close();``
InputStream tmpIn = null;
OutputStream tmpOut = null;
// Get the BluetoothSocket input and output streams
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
DataInputStream mmInStream = new DataInputStream(tmpIn);
DataOutputStream mmOutStream = new DataOutputStream(tmpOut);
// here you can use the Input Stream to take the string from the client whoever is connecting
//similarly use the output stream to send the data to the client
text.setText(mmInStream.toString());
catch (Exception e)
//catch your exception here
【问题讨论】：
能否分享您提到的教程链接？ 关于这个问题的任何更新？ 您好，您有什么可行的解决方案吗？ 您好，您找到解决方案了吗？ 博世现在拥有an official API。当你问的时候它不可用吗？还是您的练习目标是在没有官方 API 的情况下进行？ 【参考方案1】：博世 PLR 50 C（基本上是更便宜的版本）使用博世 PLR 15 中已知的协议。我可以想象 GLM 50 C 也使用它。
有一个post on EEVBlog.com 列出了最重要的命令：
示例措施：发送
C04000EE--> 回复00 04 13 0E 00 00 32更改字节顺序：13 0E 00 00-->00 00 0E 13距离单位：0x00000E13*0,05 = 180mm
【讨论】：
【参考方案2】：有一个逆向工程协议：pymtprotocol 可在 github page 获得，用于 Bosch GLM 100 C，它是同一系列的设备，所以希望它可以与 GLM 50 C 一起使用。不幸的是，它是仅限 Mac OS X，我希望它独立于操作系统，因此我可以在尝试为 Android 重写协议之前在 Ubuntu 上试用它。我是编程的初学者，无论我尝试什么，我都走入了一条死胡同。如果有人可以派生 pymtprotocol 并使其可用于 Linux 或 Android，我将不胜感激。
附：所有学分都转到Peter Iannucci。
【讨论】：
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