基于Windows的蓝牙开发 C++

在Windows平台上开发蓝牙应用程序主要需要以下步骤：

1. 确保电脑上已经安装了蓝牙适配器和驱动程序。
2. 使用Windows API中的蓝牙函数进行开发。
3. 使用蓝牙SDK进行开发。

下面介绍一下使用Windows API中的蓝牙函数进行开发的步骤。

1. 引入蓝牙头文件和库文件

#include <winsock2.h>
#include <ws2bth.h>
#pragma comment(lib, "Irprops.lib")
#pragma comment(lib, "ws2_32.lib")

2. 初始化蓝牙

WSADATA wsaData;
SOCKET btSocket;
BLUETOOTH_FIND_RADIO_PARAMS m_bt_find_radio = { sizeof(BLUETOOTH_FIND_RADIO_PARAMS) };
BLUETOOTH_RADIO_INFO bt_info = { sizeof(BLUETOOTH_RADIO_INFO), 0, };
BLUETOOTH_DEVICE_SEARCH_PARAMS btSearchParams = { sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS), 1, 0, 0, 1, 1, 15, NULL };
BLUETOOTH_DEVICE_INFO btDeviceInfo = { sizeof(BLUETOOTH_DEVICE_INFO), 0, };
HANDLE hRadio;

//初始化WinSock
WSAStartup(MAKEWORD(2, 2), &wsaData);

//查找蓝牙适配器
HANDLE hFindRadio = BluetoothFindFirstRadio(&m_bt_find_radio, &hRadio);

//获取蓝牙适配器信息
BluetoothGetRadioInfo(hRadio, &bt_info);

//设置蓝牙搜索参数
btSearchParams.hRadio = hRadio;

//开启搜索
HANDLE hDeviceFind = BluetoothFindFirstDevice(&btSearchParams, &btDeviceInfo);

3. 连接蓝牙设备

SOCKADDR_BTH bt_addr = { 0 };
bt_addr.addressFamily = AF_BTH;
bt_addr.btAddr = btDeviceInfo.Address.ullLong;
bt_addr.serviceClassId = SerialPortServiceClass_UUID;

//创建蓝牙socket
btSocket = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);

//连接蓝牙设备
int connectResult = connect(btSocket, (SOCKADDR*)&bt_addr, sizeof(bt_addr));

4. 发送和接收数据

char* buffer = "Hello Bluetooth!";
int len = strlen(buffer);
int sendResult = send(btSocket, buffer, len, 0);

char recvBuffer[1024] = { 0 };
int recvResult = recv(btSocket, recvBuffer, 1024, 0);

5. 关闭蓝牙连接和WinSock

closesocket(btSocket);
BluetoothFindDeviceClose(hDeviceFind);
BluetoothFindRadioClose(hFindRadio);
WSACleanup();

上述代码仅是一个简单的蓝牙连接示例，实际应用中需要根据具体需求进行修改和完善。