Installation and examples

Under linux installation

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

Examples official

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

Use of a Bluetooth communication module pybluez

Select the Bluetooth communication objects

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")

Inquiry service equipment

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("")

Communicate by way RFCOMM

By way of socket programming model similar to Bluetooth communication for programming

1. Server-side program

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. The client program

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()

Communicate by way L2CAP

The L2CAP RFCOMM sockets manner almost equivalent to the sockets embodiment, the only difference is the way by L2CAP, odd port and the port is between 0x1001 to 0x8FFF. The default connection may be reliably transmitted packet is 672 bytes.

1. Server-side program

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. The client program

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()

MTU size adjustment

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

refer：

An Introduction to Bluetooth Programming

Python's Bluetooth communication module pybluez study notes

python realize Bluetooth communication