基于python实现蓝牙通信代码实例

这篇文章主要介绍了基于python实现蓝牙通信代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

安装和示例

linux下安装

sudo apt-get install python-pip libglib2.0-dev
sudo pip install bluepy

官方示例

import btle
class MyDelegate(btle.DefaultDelegate):
def __init__(self, params):
btle.DefaultDelegate.__init__(self)#..
.initialise here
def handleNotification(self, cHandle,
data): #...perhaps check cHandle#...process 'data'
#
Initialisation-- -- -- -
p = btle.Peripheral(address)
p.setDelegate(MyDelegate(params))
# Setup to turn notifications on, e.g.#svc =
p.getServiceByUUID(service_uuid)# ch =
svc.getCharacteristics(char_uuid)[0]# ch
.write(setup_data)
# Main loop-- -- -- --
while True:
if p.waitForNotifications(1.0): #
handleNotification() was called
continue
print "Waiting..."#
Perhaps do something
else here

蓝牙通信模块pybluez的使用

选择蓝牙通信对象

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"
)

查询设备服务

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("")

通过RFCOMM方式进行通信

采用类似于socket编程模型的方式进行蓝牙通信的编程

1.服务器端程序

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. 客户端程序

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()

通过L2CAP方式进行通信

L2CAP的sockets方式几乎等同于RFCOMM的sockets方式，唯一的不同是通过L2CAP的方式，并且端口是0x1001到0x8FFF之间的奇数端口。默认的连接可以传送的可靠报文是672个字节。

1.服务器端程序

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.客户端程序

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()

调整MTU大小

l2cap_sock = bluetooth.BluetoothSocket( bluetooth.L2CAP )
# connect the socket
bluetooth.set_l2cap_mtu( l2cap_sock, 65535 )

来源：https://www.cnblogs.com/-wenli/p/11646928.html