2

我正在使用 Python 开发一个应用程序(当前为 2.7,如有必要可以切换到 3.3),它应该:

  1. 检测蓝牙设备(指夹脉搏血氧仪,如果您有兴趣)。
  2. 与设备建立连接(受密码保护)
  3. 将设备中的数据流式传输到我的计算机
  4. 对数据进行更多(当前无关的)编程

为此,我使用 Python 的 PyBluez 库,因为它可能是我找到的与 Windows 和 Python2.7 兼容的文档最多的库(遗憾的是仍然很少)。

我对套接字编程很陌生,所以这可能是一个简单的问题。我遇到的问题是我似乎无法弄清楚如何连接到设备,因为它受密码保护。我可以毫无问题地找到它并检索它的地址,我只是不知道连接时使用哪个端口或如何输入密码。

谢谢你的帮助!

参考信息:使用的
脉搏血氧仪: http: //www.echostore.com/wireless-oximeter-cms50e.html
PyBluez 库:http ://pybluez.googlecode.com/svn/www/docs-0.7/index.html

4

2 回答 2

0

我遇到了同样的问题,我已经解决了,也许你可以试试:

  1. 制作一个名为pairtool.exe的Windows工具,它可以帮助您与命令行配对。

    dwRet = BluetoothAuthenticateDevice(NULL, NULL, &btdi, L"1234", 4);
    if(dwRet != ERROR_SUCCESS)
    {
        fprintf(stderr, "BluetoothAuthenticateDevice ret %d\n", dwRet);
        ExitProcess(2);
    }
    
  2. 蟒蛇代码:

    def connect2Btdev(devName):
    #found the device addr
    addr = inquiry(devName)
    if addr == None:
       return None
    
    #pairing with pairtool.exe
    cmd=r'%s %s' % ('pairtool.exe',addr)
    ret = os.system(cmd)
    
    if ret <> 0:
        return None
    
于 2013-08-27T07:54:03.073 回答
0

PyBlueZ 未在此处公开 Windows 蓝牙身份验证 API:https ://msdn.microsoft.com/en-us/library/windows/desktop/cc766819(v=vs.85).aspx

解决这个问题的一种方法是创建一个命令行工具并通过 Python 使用它。要为 Windows 创建命令行工具,请使用 Visual Studio 并将必要的库添加到项目链接器属性:Bthprops.lib 和 ws2_32.lib

下面是一个项目的代码,用于制作一个带有 1 个参数的命令行工具,即 MAC 地址,它使用“Just Works”配对来配对指定的设备。请参阅使用密码配对的注释代码。

#include "stdafx.h"
#include <initguid.h>
#include <winsock2.h>
#include <BluetoothAPIs.h>
#include <ws2bth.h>

BOOL WINAPI BluetoothAuthCallback(LPVOID pvParam, PBLUETOOTH_AUTHENTICATION_CALLBACK_PARAMS pAuthCallbackParams);

int _tmain(int argc, _TCHAR* argv[])
{
    SOCKADDR_BTH sa = { 0 };
    int sa_len = sizeof(sa);
    DWORD dwRet;
    BLUETOOTH_DEVICE_INFO  btdi = { 0 };
    HBLUETOOTH_AUTHENTICATION_REGISTRATION hRegHandle = 0;

    // initialize windows sockets
    WORD wVersionRequested;
    WSADATA wsaData;
    wVersionRequested = MAKEWORD(2, 0);
    if (WSAStartup(wVersionRequested, &wsaData) != 0) {
        ExitProcess(2);
    }

    // parse the specified Bluetooth address
    if (argc < 2) {
        fprintf(stderr, "usage: csbtpair <addr>\n"
            "\n  addr must be in the form (XX:XX:XX:XX:XX:XX)");
        ExitProcess(2);
    }
    if (SOCKET_ERROR == WSAStringToAddress(argv[1], AF_BTH,
        NULL, (LPSOCKADDR)&sa, &sa_len)) {
        ExitProcess(2);
    }

    // setup device info
    btdi.dwSize = sizeof(BLUETOOTH_DEVICE_INFO);
    btdi.Address.ullLong = sa.btAddr;
    btdi.ulClassofDevice = 0;
    btdi.fConnected = false;
    btdi.fRemembered = false;
    btdi.fAuthenticated = false;

    // register authentication callback. this prevents UI from showing up.
    dwRet = BluetoothRegisterForAuthenticationEx(&btdi, &hRegHandle, &BluetoothAuthCallback, NULL);
    if (dwRet != ERROR_SUCCESS)
    {
        fprintf(stderr, "BluetoothRegisterForAuthenticationEx ret %d\n", dwRet);
        ExitProcess(2);
    }

    // authenticate device (will call authentication callback)
    AUTHENTICATION_REQUIREMENTS authreqs = MITMProtectionNotRequired;
    fprintf(stderr, "BluetoothAuthReqs = %d\n", authreqs);
    dwRet = BluetoothAuthenticateDeviceEx(NULL, NULL, &btdi, NULL, authreqs);
    if (dwRet != ERROR_SUCCESS)
    {
        fprintf(stderr, "BluetoothAuthenticateDevice ret %d\n", dwRet);
        if (dwRet == ERROR_CANCELLED)
        {
            fprintf(stderr, "Cancelled");
        }
        else if (dwRet == ERROR_INVALID_PARAMETER)
        {
            fprintf(stderr, "Invalid Parameter");
        }
        else if (dwRet == ERROR_NO_MORE_ITEMS)
        {
            fprintf(stderr, "Already paired!");
        }
    }

    fprintf(stderr, "pairing finish\n");
    ExitProcess(0);
    return 0;
}

// Authentication callback
BOOL WINAPI BluetoothAuthCallback(LPVOID pvParam, PBLUETOOTH_AUTHENTICATION_CALLBACK_PARAMS pAuthCallbackParams)
{
    DWORD dwRet;

    fprintf(stderr, "BluetoothAuthCallback 0x%x\n", pAuthCallbackParams->deviceInfo.Address.ullLong);
    BLUETOOTH_AUTHENTICATE_RESPONSE AuthRes;
    AuthRes.authMethod = pAuthCallbackParams->authenticationMethod;
    fprintf(stderr, "Authmethod %d\n", AuthRes.authMethod);
    // Check to make sure we are using numeric comparison (Just Works)
    if (AuthRes.authMethod == BLUETOOTH_AUTHENTICATION_METHOD_NUMERIC_COMPARISON) 
    {
        fprintf(stderr, "Numeric Comparison supported\n");
    }
    AuthRes.bthAddressRemote = pAuthCallbackParams->deviceInfo.Address;
    AuthRes.negativeResponse = FALSE;

    // Commented out code is used for pairing using the BLUETOOTH_AUTHENTICATION_METHOD_PASSKEY method
    //memcpy_s(AuthRes.pinInfo.pin, sizeof(AuthRes.pinInfo.pin), L"1234", 0);
    //AuthRes.pinInfo.pinLength = 0;
    // Respond with numerical value for Just Works pairing
    AuthRes.numericCompInfo.NumericValue = 1;

    // Send authentication response to authenticate device
    dwRet = BluetoothSendAuthenticationResponseEx(NULL, &AuthRes);
    if (dwRet != ERROR_SUCCESS)
    {
        fprintf(stderr, "BluetoothSendAuthenticationResponseEx ret %d\n", dwRet);
        if (dwRet == ERROR_CANCELLED)
        {
            fprintf(stderr, "Bluetooth device denied passkey response or communicatino problem.\n");
        }
        else if (dwRet == E_FAIL)
        {
            fprintf(stderr, "Device returned a failure code during authentication.\n");
        }
        else if (dwRet == 1244)
        {
            fprintf(stderr, "Not authenticated\n");
        }
    }
    else
    {
        fprintf(stderr, "BluetoothAuthCallback finish\n");
    }

    return 1; // This value is ignored
}

代替自己创建这个,您可能想尝试这个预制的解决方案: http: //bluetoothinstaller.com/bluetooth-command-line-tools/ 它不适用于我的特定解决方案。

然后,您需要以管理员身份从 python 运行下载的或自定义的命令行工具。为了可靠地做到这一点,我推荐stackoverflow问题: 如何在windows上以提升的权限运行python脚本

于 2015-08-06T16:07:39.573 回答