Windows System Software -- Consulting, Training, Development -- Unique Expertise, Guaranteed Results


Before Posting...

Please check out the Community Guidelines in the Announcements and Administration Category.

More Info on Driver Writing and Debugging

The free OSR Learning Library has more than 50 articles on a wide variety of topics about writing and debugging device drivers and Minifilters. From introductory level to advanced. All the articles have been recently reviewed and updated, and are written using the clear and definitive style you've come to expect from OSR over the years.

Check out The OSR Learning Library at:

windows11+intel BT5.3 bluetooth SCO remote connect Failure

anone313anone313 Member Posts: 1

brb = (struct _BRB_SCO_OPEN_CHANNEL*) &(connection->ConnectDisconnectBrb);
devCtx->ProfileDrvInterface.BthReuseBrb((PBRB)brb, BRB_SCO_OPEN_CHANNEL_RESPONSE);

brb->Hdr.ClientContext[0]   = connectionObject;
brb->BtAddress              = ConnectParams->BtAddress;
brb->ChannelHandle          = ConnectParams->ConnectionHandle;
brb->Response               = SCO_CONNECT_RSP_RESPONSE_SUCCESS;

brb->TransmitBandwidth      = 8000;
brb->ReceiveBandwidth       = 8000;  // 64Kb/s
brb->MaxLatency = 0xFFFF;// 50;

brb->PacketType = 0x3F;// SCO_EV3;///**/devCtx->ScoPacketTypes;  SCO_HV1 | SCO_HV3

brb->ChannelFlags           = SCO_CF_LINK_SUPPRESS_PIN;
brb->CallbackFlags          = CALLBACK_DISCONNECT;
brb->Callback               = &HpSrvIndicationCallback;
brb->CallbackContext        = connectionObject;
brb->ReferenceObject        = (void*) WdfDeviceWdmGetDeviceObject(devCtx->Device);
status = SendBrbAsync(devCtx->IoTarget, connection->ConnectDisconnectRequest, (PBRB)brb, sizeof(*brb), RemoteConnectCompletion, brb);
if (!NT_SUCCESS(status))
    TraceEvents(TRACE_LEVEL_ERROR, DBG_CONNECT, "SendBrbAsync failed, Status = %X", status);

The above code can be connected normally before win11 Bluetooth 5.3, but in win11 Bluetooth 5.3 version brb->PacketType and brb->ContentFormat, no matter how you set the return value of status, the return value is always 0xC00000BB(STATUS_NOT_SUPPORTED)
Initialization uses BRB_SCO_GET_SYSTEM_INFO to obtain SCO information, and the result is:
Features = 3
MaxChannels = 2
TransferUnit = 0
PacketTypes = 3F
DataFormats = F
From the results, SCO is supported???but why does the SCO connection above always return STATUS_NOT_SUPPORTED?

Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. Sign in or register to get started.

Upcoming OSR Seminars
OSR has suspended in-person seminars due to the Covid-19 outbreak. But, don't miss your training! Attend via the internet instead!
Kernel Debugging 13-17 May 2024 Live, Online
Developing Minifilters 1-5 Apr 2024 Live, Online
Internals & Software Drivers 11-15 Mar 2024 Live, Online
Writing WDF Drivers 26 Feb - 1 Mar 2024 Live, Online