[BlueZ] 1、Download install and use the BlueZ and hcitool on
星期日, 02. 九月 2018 11:58下午 - beautifulzzzz
The version compatibility across the OS and these packages is a nightmare for every new person who tries to use Tensorflow. In here, I record the successful procedure to install everything listed in the title of this note.
First of all, make sure that you have the exact same version of software in every steps, or it may not work. To install Tensorflow at Ubuntu, you will need to install Ubuntu 16.04. Run
Bluez is the default Bluetooth protocol stack on Linux. It should be present and installed on your Linux distribution. If not, building and installing from source is not too difficult:
- Download the latest stable source release of Bluez from here. Unzip the compressed file you downloaded.
- Install the headers and libraries required for Bluez compilation:
2. Download And Install
I follow the blog (Installing Bluez 5.44 onto Raspbian?) to install bluez-5.50.
Download the most recent version from the official page:.
澳门三合彩票，For example, at the time of writing it was 5.50, so I used(on my pi):
Then I extracted it and built it:
tar -xf bluez-5.50.tar.xz cd bluez-5.50
Read the README! It lists the dependencies and the configure switches:
Install the dependencies first: (glib, dbus, libdbus, udev, etc.)
sudo apt install libdbus-1-dev libudev-dev libical-dev libreadline-dev
note: If you do not install the libdbus-1-dev, you will later get this strange error:
configure: error: D-Bus >= 1.6 is required
once you've installed dependencies, you can configure switches:
./configure --prefix=/usr --mandir=/usr/share/man --sysconfdir=/etc --localstatedir=/var --enable-experimental
make sudo make install
It takes maybe 10 minutes to compile. After installing, you should find
/usr/libexec/bluetooth. You should also see bluetoothd
Go to each of these directories and type
You'll note that the one in libexec is new and the one in lib is old.
In order to make sure that d-bus is talking to you new BlueZ 5.50 and not your old BlueZ 5.43, you need to tell systemd to use the new bluetooth daemon:
sudo vim /lib/systemd/system/bluetooth.service
Make sure the
exec.start line points to your new daemon in
For me, that wasn't enough. No matter what, upon restart I always got bluetoothd 5.43... So I just created a symlink from the old one to the new.
First rename the old file:
sudo mv /usr/lib/bluetooth/bluetoothd /usr/lib/bluetooth/bluetoothd-543.orig
Create the symlink:
sudo ln -s /usr/libexec/bluetooth/bluetoothd /usr/lib/bluetooth/bluetoothd sudo systemctl daemon-reload
That should do it.
to check the version of your Ubuntu. If you want to dual-boost OS from window10, like what I did, there is another note teach you how to do the dual-boost. The following passages assume you have already had your Ubuntu 16.04 installed correctly.
3. How to use the bluez and hcitool
3.1 setup bluetooth service
Start the bluetooth service and enable automatic startup, assuming you're using systemd as the init daemon:
sudo systemctl start bluetooth.service sudo systemctl enable bluetooth.service
Open a terminal and use the following commands:
sudo add-apt-repository ppa:mystic-mirage/pycharmsudo apt-get update
To install the community edition of PyCharm, use the command below. It will download data of around 120 MB.
sudo apt-get install pycharm-community
To install the professional edition of PyCharm, use the command below. It will download data of around 160 MB.
sudo apt-get install pycharm
3.2 hcitool scan for bluetooth devices
Before start scanning make sure that your bluetooth device is turned on and not blocked, you can check that with the rfkill command:
sudo rfkill list
If the bluetooth device is blocked (soft or hard blocked), unblock it with the rfkill command again:
sudo rfkill unblock bluetooth
Bring up the bluetooth device with hciconfig command and start scanning, make sure the target device's bluetooth is on and It's discoverable:
sudo hciconfig hci0 up hcitool scan
Wait few moment to complete the hcitool scan or hcitool lescan, the results will be something like bellow:
Here 00:1A:7D:DA:71:0A is the bluetooth MAC address and SHEN-PC is the name of the bluetooth device, i.e. an PC.
hcitool lescan will forever scan ble devices, if use
ctrl+c stop it, it will show error(ref to LINKS
Set scan parameters failed: Input/output error
To uninstall PyCharm installed by the above described method, use the command below to uninstall the community edition of PyCharm:
sudo apt-get remove pycharm-community
To remove the professional version, use the command below:
sudo apt-get remove pycharm
Afterward, use the command below to remove the PPA from the sources list:
sudo add-apt-repository --remove ppa:mystic-mirage/pycharm
That’s all you need to do. I hope this tutorial helped you toinstall PyCharm in Ubuntu Linux. Any questions or suggestions are always welcomed.
sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
sudo apt-get install python2.7
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