無法運行 python-bluez RFCOMM 服務器示例腳本 (Cannot run python-bluez RFCOMM server example script)

問題描述

無法運行 python‑bluez RFCOMM 服務器示例腳本 (Cannot run python‑bluez RFCOMM server example script)

我正在嘗試在我的 Android 應用程序和 Raspberry Pi 3 之間建立藍牙通信鏈接。我嘗試在我的 Raspberry Pi 上使用 pybluez。我的問題是，當我嘗試運行 pybluez 附帶的示例代碼（見下文）時，我收到以下錯誤消息：

Traceback (most recent call last):
  File "/usr/share/doc/python‑bluez/examples/simple/rfcomm‑server.py", line 20, in <module>
    profiles = [ SERIAL_PORT_PROFILE ],
  File "/usr/lib/python2.7/dist‑packages/bluetooth/bluez.py", line 176, in advertise_service
    raise BluetoothError (str (e))
BluetoothError: (2, 'No such file or directory')

這是我要運行的腳本：似乎問題出在advertise_service方法中...

# 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"

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"

有趣的是，以下腳本完美運行，但我無法從Android連接，因為我無法為Android中的套接字設置端口等。

import bluetooth

server_sock=bluetooth.BluetoothSocket( bluetooth.RFCOMM )

port = 1
server_sock.bind(("",port))
server_sock.listen(1)

client_sock,address = server_sock.accept()
print("Accepted connection from ",address)

data = client_sock.recv(1024)
print("received [%s]" % data)

client_sock.close()
server_sock.close()

我收到官方示例腳本的錯誤消息可能是什麼原因？？？我已經按照此處描述的步驟進行操作：https：

sudo apt‑get install bluetooth libbluetooth‑dev

(by N. Frueh、vvombat)

參考文件

1. Cannot run python‑bluez RFCOMM server example script (CC BY‑SA 2.5/3.0/4.0)