rfcomm蓝牙许可被拒绝错误树莓派 [英] rfcomm bluetooth permission denied error raspberry pi
问题描述
我正在使用蓝牙软件狗尝试将信息从ubuntu 15.04发送到运行最新的debian jessie映像的raspberry pi b +.我只是关注 http://people.csail.mit.edu/albert/bluez-intro/教程.我得到了简单的RFCOMM和L2CAP协议.我在运行SDP协议时遇到问题.服务器代码是-
I'm using a bluetooth dongle to try and send information from ubuntu 15.04 to raspberry pi b+ running the latest debian jessie image. I'm just following the http://people.csail.mit.edu/albert/bluez-intro/ tutorial. I got the simple RFCOMM and L2CAP protocols working. I'm having trouble running the SDP protocol. The server code is -
from bluetooth import *
server_sock = BluetoothSocket(RFCOMM)
server_sock.bind(("", PORT_ANY))
server_sock.listen(1)
advertise_service(server_sock, "SampleServer",service_classes=[SERIAL_PORT_CLASS], profiles=[SERIAL_PORT_PROFILE])
client_sock, client_info = server_sock.accept()
print "connection from: ", client_info
client_sock.send("PyBluez server says Hello!")
data = client_sock.recv(1024)
print "received: ", data
client_sock.close()
server_sock.close()
我遇到的错误是-
Traceback (most recent call last):
File "rfcomm-server.py", line 7, in <module>
advertise_service(server_sock, "SampleServer",service_classes=[SERIAL_PORT_CLASS], profiles=[SERIAL_PORT_PROFILE])
File "/usr/lib/python2.7/dist-packages/bluetooth/bluez.py", line 176, in advertise_service
raise BluetoothError (str (e))
bluetooth.btcommon.BluetoothError: (13, 'Permission denied')
这是我已采取的一些步骤-
Here are some steps I have taken-
Add the user 'pi' to lp group
run piscan on hciconfig hci0
Add --compat option to bluetoothd in bluetooth.service
任何帮助将不胜感激.谢谢!
Any help would be appreciated. Thanks!
推荐答案
Running your script as root kinda works, but it's not a good practice.
根据此线程,您只需要调整权限即可/var/run/sdp
文件(使用--compat
开关创建的).
According to this thread, you just need to adjust permissions to the /var/run/sdp
file (which is created when using the --compat
switch).
因此,为了防止链接腐烂,我正在复制dlech的帖子,并将其改编为Raspberry Pi:
So, to prevent link rot I'm reproducing dlech's post and adapting it to Raspberry Pi:
-
确保您的
pi
用户属于bluetooth
组:
$ cat /etc/group | grep bluetooth
bluetooth:x:113:pi
1.1.如果不是,请将pi
添加到bluetooth
组:
1.1. If it's not, add pi
to bluetooth
group:
$ sudo usermod -G bluetooth -a pi
更改/var/run/sdp
文件的组:
Change group of the /var/run/sdp
file:
$ sudo chgrp bluetooth /var/run/sdp
要使更改在重启后永久存在:
To make the change persistent after reboot:
3.1.创建具有以下内容的文件/etc/systemd/system/var-run-sdp.path
:
3.1. Create file /etc/systemd/system/var-run-sdp.path
with the following content:
[Unit]
Descrption=Monitor /var/run/sdp
[Install]
WantedBy=bluetooth.service
[Path]
PathExists=/var/run/sdp
Unit=var-run-sdp.service
3.2.还有另一个文件/etc/systemd/system/var-run-sdp.service
:
3.2. And another file, /etc/systemd/system/var-run-sdp.service
:
[Unit]
Description=Set permission of /var/run/sdp
[Install]
RequiredBy=var-run-sdp.path
[Service]
Type=simple
ExecStart=/bin/chgrp bluetooth /var/run/sdp
3.3.最后,开始一切:
3.3. Finally, start it all up:
sudo systemctl daemon-reload
sudo systemctl enable var-run-sdp.path
sudo systemctl enable var-run-sdp.service
sudo systemctl start var-run-sdp.path
信用归用户 dlech 最初是弄清楚"的用户.
Credit goes to user dlech who "figured it out" originally.
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