基于winsock的蓝牙搜寻、通信程序
本帖最后由 VisualEleven 于 2011-01-04 11:18:45 编辑 我的电脑是客户端，远程蓝牙模块是服务端，用socket 进行通信，为什么单步调试是能过真确得到recv()值，全速运行就有问题，程序长时间没反应。
ULONG ulRetCode = 0;
int iCxnCount = 0;
SOCKET LocalSocket = INVALID_SOCKET;
SOCKADDR_BTH SockAddrBthServer = {0};
#defineCXN_TRANSFER_DATA_LENGTH100
#defineCXN_RECEIVE_DATA_LENGTH100
CHAR szSendData[CXN_TRANSFER_DATA_LENGTH] = {0};
//我定义的
CHAR szRecBuf[CXN_RECEIVE_DATA_LENGTH];
// Setting address family to AF_BTH indicates winsock2 to use Bluetooth sockets
// Port should be set to 0 if ServiceClassId is spesified.
SockAddrBthServer.addressFamily = AF_BTH;
SockAddrBthServer.btAddr = (BTH_ADDR) SelectionRemoteBtAddr;
SockAddrBthServer.serviceClassId = g_guidServiceClass;
SockAddrBthServer.port = 1;// Valid ports are 1 - 31
if ( ( LocalSocket = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM) ) == INVALID_SOCKET )
{//创建套接字
//printf("=CRITICAL= | socket() call failed. Error = [%d]\n", WSAGetLastError());
//AfxMessageBox( (LPCTSTR) WSAGetLastError(), MB_OK, 0 );
AfxMessageBox( _T("create socket for the bluetooth fialed !") );
}
// Connect the socket (pSocket) to a given remote socket represented by address (pServerAddr)
if ( connect(LocalSocket, (struct sockaddr *) &SockAddrBthServer, sizeof(SOCKADDR_BTH)) == SOCKET_ERROR )
{//连接套接字
AfxMessageBox( _T("connect socket for the bluetooth fialed !") );
}
strcpy(szSendData, "7XY");//待发送的字符命令
if ( send(LocalSocket, szSendData, 3, 0) == SOCKET_ERROR )
{//发送数据
AfxMessageBox( _T("send data for the bluetooth fialed !") );
}
#definesTIMEOUT2
#defineuTIMEOUT1000
fd_setfdRead;
timeval TimeOut;
TimeOut.tv_sec= sTIMEOUT;
TimeOut.tv_usec= uTIMEOUT;
FD_ZERO(&fdRead);
FD_SET(LocalSocket,&fdRead);
int Ret = select( 0,&fdRead, NULL, NULL,&TimeOut );
//这样select返回的时候可以根据ret的值判断时候有数据可读。ret>0可读，==0则是SOCKET_ERROR
if ( Ret > 0 )
{
if ( SOCKET_ERROR == recv(LocalSocket, szRecBuf, 1, 0) )
{
AfxMessageBox( _T("receive data for the bluetooth fialed !") );
}
else
AfxMessageBox( _T("receive data for the bluetooth success !") );
}
else if ( Ret == 0 )
{
AfxMessageBox( _T("select for the bluetooth timeout !") );
}else if ( Ret == SOCKET_ERROR )
{
AfxMessageBox( _T("select for the bluetooth fialed !") );
}
