(编辑:jimmy 日期: 2024/11/16 浏览:2)
1、bluepy 简介
bluepy 是github上一个很好的蓝牙开源项目,其地址在 LINK-1, 其主要功能是用python实现linux上BLE的接口。
This is a project to provide an API to allow access to Bluetooth Low Energy devices from Python. At present it runs on Linux only; I've mostly developed it using a Raspberry Pi, but it will also run on x86 Debian Linux.
支持python版本:The code is tested on Python 2.7 and 3.4; it should also work on 3.3.
2、安装
直接源码安装,python3加持:
sudo apt-get install git build-essential libglib2.0-dev git clone https://github.com/IanHarvey/bluepy.git cd bluepy python3 setup.py build sudo python3 setup.py install
注:不要用python2,这辈子都不会用python2!
注:进行到这一步突然惊醒我的台式机无蓝牙,遂开启我的无屏幕树莓派,用命令找其ip,并用ssh登录:
"Pi" Nmap scan report for 192.168.31.51 Host is up (0.19s latency). PORT STATE SERVICE 22/tcp open ssh MAC Address: B8:27:EB:71:33:AE (Raspberry Pi Foundation) "color: #ff0000">3、看文档,玩DEMO
bluepy 的文档地址 LINK-2
在bluepy中新建一个examples文件夹,用来存放接下来我们的测试DEMO:
3.1 scan devices demo
这里第一个DEMO是BLE设备扫描,这里用到了Scanner对象,该对象可以用来搜索BLE设备的广播包数据。在大多数情况下该对象将会扫描出周围所有可连接设备。
下面是我改造为python3的代码:
"Discovered device", dev.addr) elif isNewData: print("Received new data from", dev.addr) scanner = Scanner().withDelegate(ScanDelegate()) devices = scanner.scan(10.0) for dev in devices: print("Device %s (%s), RSSI=%d dB" % (dev.addr, dev.addrType, dev.rssi)) for (adtype, desc, value) in dev.getScanData(): print(" %s = %s" % (desc, value))
执行效果如下:
注:注意用sudo运行,更详细的接口见 LINK-3
3.2 get services
bluepy 的DEMO有点少,我又找了个专是DEMO的github项目:LINK-5
将其中的getServices.py改造下:
"Fatal, must pass device address:", sys.argv[0], "<device address="">") quit() p = Peripheral(sys.argv[1],"public") services=p.getServices() #displays all services for service in services: print(service)
其中Peripheral(sys.argv[1],"public")是用mac地址创建一个连接,由于我们上一步用scan搜索到的mac地址为public类型,因此这里第二个参数为"public",更详细的介绍见 LINK-6;
其中getServices会返回所连接设备的服务;
执行效果如下:
3.3 get characteristics
同3.2获取characteristic的代码如下:
"Fatal, must pass device address:", sys.argv[0], "<device address="">") quit() p = Peripheral(sys.argv[1],"public") chList = p.getCharacteristics() print("Handle UUID Properties") print("-------------------------------------------------------") for ch in chList: print(" 0x"+ format(ch.getHandle(),'02X') +" "+str(ch.uuid) +" " + ch.propertiesToString())
执行效果如下:
3.4 get device name
直接上代码:
"Fatal, must pass device address:", sys.argv[0], "<device address="">") quit() p = Peripheral(sys.argv[1],"public") try: ch = p.getCharacteristics(uuid=dev_name_uuid)[0] if (ch.supportsRead()): print(ch.read()) finally: p.disconnect()
运行效果如下:
小结
bluepy 是非常棒的一款蓝牙BLE工具,掌握它会为你节省比较多的时间~
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。