我正在创建一个Android应用程序,我需要连接经典蓝牙设备(不是BLE)。
我的规格说我需要向串口写入一些字节来发送命令才能启动...当我收到它开始的答案时,我可以发送另一个字节数组来请求设备的答案。
是否有任何示例代码我可以咨询从我的设备获取数据?
目前我打开了与SPP UUID服务的连接并发送了字节,但我没有得到任何答案。该设备绝对有效,因为我可以用另一个应用程序测试它。
我的代码中的一些代码段: (设备不为空且已连接)
UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); //Standard SerialPortService ID
//UUID uuid = UUID.fromString("00005500-D102-11E1-9B23-00025B00A5A5");
mmSocket = mmDevice.createRfcommSocketToServiceRecord(uuid);
mmSocket.connect();
mmOutputStream = mmSocket.getOutputStream();
mmInputStream = mmSocket.getInputStream();
listenForData();
void sendData(byte[] bytes) throws IOException
{
mmOutputStream.write(bytes);
Log.d(AppConstants.APP_TAG, "Data Sent");
}
void listenForData()
{
final Handler handler = new Handler();
final byte delimiter = 55; //not sure about this yet
stopWorker = false;
readBufferPosition = 0;
readBuffer = new byte[1024];
workerThread = new Thread(new Runnable()
{
public void run()
{
while(!Thread.currentThread().isInterrupted() && !stopWorker)
{
try
{
int bytesAvailable = mmInputStream.available();
if(bytesAvailable > 0)
{
Log.d(AppConstants.APP_TAG, "Found DATA!!!!");
byte[] packetBytes = new byte[bytesAvailable];
mmInputStream.read(packetBytes);
for(int i=0;i<bytesAvailable;i++)
{
byte b = packetBytes[i];
if(b == delimiter)
{
byte[] encodedBytes = new byte[readBufferPosition];
System.arraycopy(readBuffer, 0, encodedBytes, 0, encodedBytes.length);
final String data = new String(encodedBytes, "US-ASCII");
readBufferPosition = 0;
handler.post(new Runnable()
{
public void run()
{
Log.d(APP_TAG, data);
}
});
}
else
{
readBuffer[readBufferPosition++] = b;
}
}
}
}
catch (IOException ex)
{
stopWorker = true;
}
}
}
});
workerThread.start();
}
有什么建议吗?