bluetooth

问题 I've got a bash script file that I've been working on, that I'm trying to get to be able to list the currently available Bluetooth devices and then allow the user to choose one and connect to it. I've got all of the code to work, but the listing of Bluetooth devices will not maintain the whitespace that you normally get when you run the command straight from the CLI. In an ideal world, I would like to be able to actually list out the Bluetooth devices and have the user just select one, but I

问题 I'm creating an application that uses an android to send and receive data via bluetooth. but I'm having problems when creating the socket. He gets caught in that line mmSocket btserver.accept = (); And I can not pair with any device. I have another doubt, I can make that communication with an android and a symbian? 回答1: The code is below. He finds devices but does not open the communication socket. public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

问题 So i've been trying to connect my HC-05 BT module to PC. I'm sure i connected everything correct, i'm not new with arduino stuff. What i try to do now is i want to communicate with arduino using uart connection via BT. I have arduino leonardo, and here is my code: void setup() { Serial1.begin(9600); pinMode(LED_BUILTIN, OUTPUT); } void loop() { if (Serial1.available()>0) { String ainfo; ainfo = Serial1.readStringUntil('\n'); if (ainfo.equals("ON")) { digitalWrite(LED_BUILTIN, HIGH); Serial1

问题 I've been working on making my RPi 2 function like a car bluetooth receiver and all is well, except I have no idea how I could automate the pairing of bluetooth devices in Bluez5. In the past I would've used the bluetooth agent and a simple script, but that seems to have gone out the window with the move from 4 -> 5. The nature of the setup means I have no kb/mouse on the RPi once its in the car, so it needs to be a fully automated setup where anyone can scan for the RPi, and if the probably

问题 I have successfully connected my arduino uno R3 with bluetooth mate module and am able to send data to my laptop running Ubuntu 12.04 via bluetooth. (using serial port protocol). The data is received on rfcomm0. The following code displays the received data : sudo screen /dev/rfcomm0 Now I am facing problems in reading this data in a java program. I have referred the code from http://playground.arduino.cc/Interfacing/Java. This uses the rxtx library to access the serial port. Here is the code

问题 I want to set a FileObserver in the bluetooth folder. My problem is that this folder is different depending on the device, for example in Galaxy S is "mnt/sdcard/bluetooth" and in the Desire is "mnt/sdcard/downloads/bluetooth". Is there any way to get programatically that folder to be able to do the application device independient? Thanks. Santi. 回答1: Check this method: getExternalFilesDir(String type). And use DIRECTORY_DOWNLOADS as type. If you add "bluetooth" to the end you'll get the

问题 I want to set a FileObserver in the bluetooth folder. My problem is that this folder is different depending on the device, for example in Galaxy S is "mnt/sdcard/bluetooth" and in the Desire is "mnt/sdcard/downloads/bluetooth". Is there any way to get programatically that folder to be able to do the application device independient? Thanks. Santi. 回答1: Check this method: getExternalFilesDir(String type). And use DIRECTORY_DOWNLOADS as type. If you add "bluetooth" to the end you'll get the

问题 I want to set a FileObserver in the bluetooth folder. My problem is that this folder is different depending on the device, for example in Galaxy S is "mnt/sdcard/bluetooth" and in the Desire is "mnt/sdcard/downloads/bluetooth". Is there any way to get programatically that folder to be able to do the application device independient? Thanks. Santi. 回答1: Check this method: getExternalFilesDir(String type). And use DIRECTORY_DOWNLOADS as type. If you add "bluetooth" to the end you'll get the

问题 I want to set a FileObserver in the bluetooth folder. My problem is that this folder is different depending on the device, for example in Galaxy S is "mnt/sdcard/bluetooth" and in the Desire is "mnt/sdcard/downloads/bluetooth". Is there any way to get programatically that folder to be able to do the application device independient? Thanks. Santi. 回答1: Check this method: getExternalFilesDir(String type). And use DIRECTORY_DOWNLOADS as type. If you add "bluetooth" to the end you'll get the

问题 I have a problem with testing my application on Android platform. I have functional application on x86 architecture. This application can connect to Bluetooth LowEnergy device and communicate with it. BT device is HM-10 module - serial line. But when I try the same application, but just compiled for Android, I'm not able to receive any data back. On the other hand I can see on remote device that all data from mobile terminal are sent. What I suspect as a possible problem is that signal