Pybluez RFCOMM服务器在Linux上没有广告服务

Question

我正在尝试在Raspbian Linux上运行一个非常简单的蓝牙服务器。如果有区别的话，我使用的是树莓派3的蓝牙适配器，而不是加密狗。

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"
advertise_service( server_sock, "SampleServer",
               service_id = uuid,
               service_classes = [ uuid, SERIAL_PORT_CLASS ],
               profiles = [ SERIAL_PORT_PROFILE ], 
#                   protocols = [ OBEX_UUID ] 
                )
print("Waiting for connection on RFCOMM channel %d" % port)
client_sock, client_info = server_sock.accept()
print("Accepted connection from ", client_info)
try:
    while True:
        data = client_sock.recv(1024)
        if len(data) == 0: break
        print("received [%s]" % data)
except IOError:
    pass
print("disconnected")
client_sock.close()
server_sock.close()
print("all done")

运行时产生以下错误:

Traceback (most recent call last):
  File "rfcomm-server.py", line 15, in <module>
    profiles = [ SERIAL_PORT_PROFILE ], 
  File "build/bdist.linux-armv7l/egg/bluetooth/bluez.py", line 268, in    advertise_service
bluetooth.btcommon.BluetoothError: error no advertisable device.

我见过很多人使用这段代码，所以我有点惊讶，我没有发现任何提到这个特定的问题。客户端版本也可以正常工作。

Answer 1

通过下面的命令启用"启用页面和查询扫描":

$ hciconfig hciX piscan