Linux 端蓝牙调试

Linux 端蓝牙调试

@(嵌入式)[BLE, ble]

毕业大半年一直从事Ble外设开发，发现linux上可以使用bluez进行蓝牙开发，更加便捷的是，有一个python模块对bluez接口进行封装，叫bluepy，给开发测试带来更多便捷。

获取 & 安装

开发平台 ubunt 14.04

$ sudo apt-get install git build-essential libglib2.0-dev
$ git clone https://github.com/IanHarvey/bluepy.git $ cd bluepy
$ python setup.py build
$ python setup.py install

个人测试脚本库mybluepy, 没怎么写过python，供参考。

使用 hcitool & gatttool

安装了bluez协议栈后提供的工具，简单操作如下。

查看蓝牙pc的设备

hcitool dev

扫描ble

hcitool lescan

设置gatttool

gatttool  -b 76:66:44:33:22:72 -I

-I : 进入交互模式

在gatttool下，

开始连接设备 ： connect

输入 ： help查看其他指令

输入characteristics 查看特征值信息，结果大概如下

handle: 0x0022, char properties: 0x1a, char value handle: 0x0023, uuid: 0000a802-0000-1000-8000-00805f9b34fb

如上， handle 0x0023 写数据， 向0x0023+1 写

0x0100

，设置监听，写0取消监听

bluepy 脚本

模块文档

提供一个简单的例子：

#!/usr/bin/python

from __future__ import print_function
import sys
import binascii
import btle
import os

ble_conn = None

class MyDelegate(btle.DefaultDelegate):

def __init__(self, conn):
btle.DefaultDelegate.__init__(self)
self.conn = conn

def handleNotification(self, cHandle, data):
data = binascii.b2a_hex(data)
print("Notification:", str(cHandle), " data ", data)

def handleDiscovery(self, dev, isNewDev, isNewData):
if isNewDev:
pass
elif isNewData:
print("\nDiscovery:", "MAC:", dev.addr, " Rssi ", str(dev.rssi))

def ble_connect(devAddr):
global ble_conn
if not devAddr is None and ble_conn is None:
ble_conn = btle.Peripheral(devAddr, btle.ADDR_TYPE_PUBLIC)
ble_conn.setDelegate(MyDelegate(ble_conn))
print("connected")

def ble_disconnect():
global ble_conn
ble_conn = None
print("disconnected")

if __name__ == '__main__':

ble_mac == "66:55:44:33:22:11"

# scan
scanner = btle.Scanner().withDelegate(MyDelegate(None))
timeout = 10.0
devices = scanner.scan(timeout)
for dev in devices:
if dev.addr == ble_mac:
print("\nDiscovery:", "MAC:", dev.addr, " Rssi ", str(dev.rssi))
for (adtype, desc, value) in dev.getScanData():
print ("  %s(0x%x) = %s" % (desc, int(adtype), value))
break

# connect
ble_connect(ble_mac)
# write , set listen
snd_content_str = """\x01\x00"""
ble_conn.writeCharacteristic(handle, snd_content_str)

# wait notification
ble_conn.waitForNotifications(2.0)

# disconnect
ble_disconnect()

参考

get start with bluez