安裝藍(lán)牙通訊模塊pybluez

Windows下pybluez的安裝

注：本文的開發(fā)環(huán)境為Windows10+Python3.7.3html

pip install pybluez

安裝過程當(dāng)中會出現(xiàn)以下圖所示的問題：

產(chǎn)生這種問題的緣由是windows系統(tǒng)沒有安裝相應(yīng)的SDK，沒有?Microsoft SDKs這個文件夾，解決辦法以下：python

windows7安裝文件的下載地址：https://www.microsoft.com/en-us/download/details.aspx?id=8279編程

安裝對應(yīng)系統(tǒng)的SDK以前，最好先卸載系統(tǒng)里的Visual?C++?2010?Redistributable和.NET.Framework再安裝對應(yīng)的SDK服務(wù)器

再次安裝 pybluez仍是有錯誤，查看安裝目錄，按照setup.py要求MS_SDK = r'Microsoft SDKs\Windows\v6.0A' 目錄socket

windows7須要手動修改Microsoft SDKs下文件夾v7.1為v6.0Aide

windows10須要手動修改Microsoft SDKs下文件夾v10.0A為v7.0Acode

完成后再安裝新的Visual?C++?2010?Redistributable和.NET.Frameworkserver

windows10通過以上步驟后，依然會出現(xiàn)以下的問題：htm

這種問題最簡單的方法是裝個visual studio2017以上的軟件的C++編譯環(huán)境，再次安裝便可成功

Linux下pybluez的安裝

安裝pybluez模塊以前先要安裝libbluetooth-dev，不然會報錯。

藍(lán)牙通訊模塊pybluez的使用

選擇藍(lán)牙通訊對象

經(jīng)過用戶友好的名字來尋找通訊對象

import bluetooth

target_name = "My Device"

target_address = None

nearby_devices = bluetooth.discover_devices()

for bdaddr in nearby_devices:

if target_name == bluetooth.lookup_name( bdaddr ):

target_address = bdaddr

break

if target_address is not None:

print("found target bluetooth device with address ", target_address)

else:

print("could not find target bluetooth device nearby")

查詢設(shè)備服務(wù)

import bluetooth

nearby_devices = bluetooth.discover_devices(lookup_names=True)

for addr, name in nearby_devices:

print(" %s - %s" % (addr, name))

services = bluetooth.find_service(address=addr)

for svc in services:

print("Service Name: %s" % svc["name"])

print(" Host: %s" % svc["host"])

print(" Description: %s" % svc["description"])

print(" Provided By: %s" % svc["provider"])

print(" Protocol: %s" % svc["protocol"])

print(" channel/PSM: %s" % svc["port"])

print(" svc classes: %s "% svc["service-classes"])

print(" profiles: %s "% svc["profiles"])

print(" service id: %s "% svc["service-id"])

print("")

經(jīng)過RFCOMM方式進(jìn)行通訊

采用相似于socket編程模型的方式進(jìn)行藍(lán)牙通訊的編程

1.服務(wù)器端程序

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()

2. 客戶端程序

import bluetooth

bd_addr = "01:23:45:67:89:AB"

port = 1

sock=bluetooth.BluetoothSocket( bluetooth.RFCOMM )

sock.connect((bd_addr, port))

sock.send("hello!!")

sock.close()

經(jīng)過L2CAP方式進(jìn)行通訊

L2CAP的sockets方式幾乎等同于RFCOMM的sockets方式，惟一的不一樣是經(jīng)過L2CAP的方式，而且端口是0x1001到0x8FFF之間的奇數(shù)端口。默認(rèn)的鏈接能夠傳送的可靠報文是672個字節(jié)。

1.服務(wù)器端程序

import bluetooth

server_sock=bluetooth.BluetoothSocket( bluetooth.L2CAP )

port = 0x1001

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()

2.客戶端程序

import bluetooth

sock=bluetooth.BluetoothSocket(bluetooth.L2CAP)

bd_addr = "01:23:45:67:89:AB"

port = 0x1001

sock.connect((bd_addr, port))

sock.send("hello!!")

sock.close()

調(diào)整MTU大小

l2cap_sock = bluetooth.BluetoothSocket( bluetooth.L2CAP )

.

. # connect the socket

.

bluetooth.set_l2cap_mtu( l2cap_sock, 65535 )

參考文獻(xiàn)

總結(jié)

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