main.py

import bluetooth
import sys
import time
name='DESKTOP-55TDMGV'#'BT'#需连接的设备名字
nearby_devices = bluetooth.discover_devices(lookup_names=True)
print(nearby_devices)#附近所有可连的蓝牙设备

addr=None
for device in nearby_devices:
    if name==device[1]:
        addr = device[0]
        print("device found!",name," address is: ",addr)
        break
if addr==None:
    print("device not exist")
services = bluetooth.find_service(address=addr)
print(services)
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"])	#打印蓝牙设备的各种属性

sock = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
'''sock.connect((addr, 2))
print("连接成功，端口：")'''
i=1
while i<255:
    try:
        sock.connect((addr, i))
        print("连接成功，端口：",i)
        # sock.send("12345")
        break
    except Exception as e:
        print("端口：",i,"连接失败",e)
        i=i+1							#遍历端口号，进行连接




#
# # server
# import time
# import sys
# import bluetooth
#
# uuid = "C7F94713-891E-496A-A0E7-983A0946126E"
# nearby_devices = bluetooth.discover_devices(lookup_names=True)
# print(nearby_devices)
# # uuid = "00001101-0000-1000-8000-00805f9b34fb"
# service_matches = bluetooth.find_service( uuid = uuid )
# if len(service_matches) == 0:
#     print("couldn't find the FooBar service")
#     sys.exit(0)
#
# first_match = service_matches[0]
# print(first_match)
# port = first_match["port"]
# name = first_match["name"]
# host = first_match["host"]
#
# print("connecting to \"%s\" on %s" % (name, host))
# sock=bluetooth.BluetoothSocket( bluetooth.RFCOMM )
# '''sock.connect((addr, port))
# print("连接成功")'''
# sock.connect((host, port))
# print("连接成功")
# while True:								#进入循环，不然通讯会自动关闭
# 	sock.send("12345".encode('utf-8'))
# 	sock.send("hello".encode('utf-8'))
# 	data=sock.recv(1024)				#1024为数据长度
# 	print("received:%s",data)
# 	time.sleep(5)
#
# #client