rfcomm

Bluetooth RFCOMM / SDP connection to a RS232 adapter in android

由 大兔子大兔子 提交于 2019-11-27 05:09:17
问题 I am trying to use the Bluetooth Chat sample API app that google provides to connect to a bluetooth RS232 adapter hooked up to another device. Here is the app for reference: http://developer.android.com/resources/samples/BluetoothChat/index.html And here is the spec sheet for the RS232 connector just for reference: http://serialio.com/download/Docs/BlueSnap-guide-4.77_Commands.pdf Well the problem is that when I go to connect to the device with: mmSocket.connect(); (BluetoothSocket::connect()

RFCOMM without pairing using PyBluez on Debian?

由 拥有回忆 提交于 2019-11-27 04:06:53
I am trying to create an RFCOMM server process with Python that can be used without the need for pairing. Initially, I grabbed the two example scripts from the PyBluez documentation: Server: # file: rfcomm-server.py # auth: Albert Huang <albert@csail.mit.edu> # desc: simple demonstration of a server application that uses RFCOMM sockets # # $Id: rfcomm-server.py 518 2007-08-10 07:20:07Z albert $ 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"

Receive audio via Bluetooth in Android

由 匆匆过客 提交于 2019-11-26 17:34:34
问题 I want to create an Android application that is capable of receiving an audio stream. I thought of using the A2DP profile, but is seems as if Android doesn't support A2DP sink. Looks like there are a lot of people that's searching for a solution for this problem. But what about receiving an ordinary bit stream, and then convert the data into audio in the application? I was thinking of receiving an PCM or Mp3 data stream via the RFCOMM (SPP Bluetooth profile), and then play it using AudioTrack

Android Bluetooth Serial/RFCOMM/SPP, How to Change the BAUD RATE?

由 末鹿安然 提交于 2019-11-26 16:46:34
问题 This is very frustrating as I've been trying for weeks and not even a clue on the internet. I am working on a project that reads/writes bluetooth serial data on different farming hardware. most of these hardware are old and changing the baud rate of their SPP is not an option. I'm using the android bluetooth chat as a basis to read/write, I've only changed the UUID to allow connection to the devices I have I've managed to read from a tag reader at a bad rate of 19,200 beautifully, and

How to prevent Android bluetooth RFCOMM connection from dying immediately after .connect()?

由 北城余情 提交于 2019-11-26 12:42:35
This problem has been solved! Thanks a lot to Brad, Denis and junkie! You're the heroes! :) This is the working code. It connects to Zeemote and reads data from it. ===== Code ===== public class ZeeTest extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); try { for (int i = 0; i < 3; i++) { test(); } } catch (Exception e) { e.printStackTrace(); } } private boolean connected = false; private BluetoothSocket sock; private InputStream in; public void test() throws Exception { if (connected) { return; }

RFCOMM without pairing using PyBluez on Debian?

由 五迷三道 提交于 2019-11-26 11:03:15
问题 I am trying to create an RFCOMM server process with Python that can be used without the need for pairing. Initially, I grabbed the two example scripts from the PyBluez documentation: Server: # file: rfcomm-server.py # auth: Albert Huang <albert@csail.mit.edu> # desc: simple demonstration of a server application that uses RFCOMM sockets # # $Id: rfcomm-server.py 518 2007-08-10 07:20:07Z albert $ from bluetooth import * server_sock=BluetoothSocket( RFCOMM ) server_sock.bind((\"\",PORT_ANY))

Android: How do bluetooth UUIDs work?

由 允我心安 提交于 2019-11-26 05:23:44
问题 I don\'t understand what a bluetooth UUID denotes. Do UUIDs denote protocols (e.g. RFCOMM)? If so, why do the createRfcommSocketToServiceRecord() methods require UUIDs, when they specify rfcomm right in their names? Why does the BluetoothChat sample code have a seemingly arbitrary, hardcoded UUID? My question arises because, as per this question, I\'m getting a null pointer exception when devices running 4.0.4 try to connect (to an external, non-android device) using reflection. However, the

How to prevent Android bluetooth RFCOMM connection from dying immediately after .connect()?

由 三世轮回 提交于 2019-11-26 03:05:29
问题 This problem has been solved! Thanks a lot to Brad, Denis and junkie! You\'re the heroes! :) This is the working code. It connects to Zeemote and reads data from it. ===== Code ===== public class ZeeTest extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); try { for (int i = 0; i < 3; i++) { test(); } } catch (Exception e) { e.printStackTrace(); } } private boolean connected = false; private
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