X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/e071f3897a0946c6be1e1b5e1f78eda8dcbf6fc7..ceb16ee24f1e6add5e2ad0398369c24d2d868cd8:/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c diff --git a/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c b/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c index 54291bf75..740ce6766 100644 --- a/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c +++ b/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothHCICommands.c @@ -1,21 +1,21 @@ /* LUFA Library - Copyright (C) Dean Camera, 2009. + Copyright (C) Dean Camera, 2010. dean [at] fourwalledcubicle [dot] com www.fourwalledcubicle.com */ /* - Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) - - Permission to use, copy, modify, and distribute this software - and its documentation for any purpose and without fee is hereby - granted, provided that the above copyright notice appear in all - copies and that both that the copyright notice and this - permission notice and warranty disclaimer appear in supporting - documentation, and that the name of the author not be used in - advertising or publicity pertaining to distribution of the + Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the software without specific, written prior permission. The author disclaim all warranties with regard to this @@ -28,384 +28,369 @@ this software. */ -#include "BluetoothHCICommands.h" +/* + TODO: Add local to remote device connections + */ -static Bluetooth_HCICommand_Header_t HCICommandHeader; -static Bluetooth_HCIEvent_Header_t HCIEventHeader; +#define INCLUDE_FROM_BLUETOOTHHCICOMMANDS_C +#include "BluetoothHCICommands.h" - uint8_t Bluetooth_HCIProcessingState; -static uint8_t Bluetooth_TempDeviceAddress[6]; +/** Temporary Bluetooth Device Address, for HCI responses which much include the detination address */ +static uint8_t Bluetooth_TempDeviceAddress[6]; -static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint8_t ParamLength) +/** Bluetooth HCI processing task. This task should be called repeatedly the main Bluetooth + * stack task to manage the HCI processing state. + */ +void Bluetooth_HCITask(void) { - uint8_t CommandBuffer[sizeof(HCICommandHeader) + HCICommandHeader.ParameterLength]; - - USB_ControlRequest = (USB_Request_Header_t) - { - bmRequestType: (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_DEVICE), - bRequest: 0, - wValue: 0, - wIndex: 0, - wLength: sizeof(CommandBuffer) - }; - - memset(CommandBuffer, 0x00, sizeof(CommandBuffer)); - memcpy(CommandBuffer, &HCICommandHeader, sizeof(HCICommandHeader)); - - if (ParamLength) - memcpy(&CommandBuffer[sizeof(HCICommandHeader)], Parameters, ParamLength); + BT_HCICommand_Header_t HCICommandHeader; - Pipe_SelectPipe(PIPE_CONTROLPIPE); - - return USB_Host_SendControlRequest(CommandBuffer); -} - -static bool Bluetooth_GetNextHCIEventHeader(void) -{ - Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE); - Pipe_Unfreeze(); - - if (!(Pipe_IsReadWriteAllowed())) + switch (Bluetooth_State.CurrentHCIState) { - Pipe_Freeze(); - return false; - } - - Pipe_Read_Stream_LE(&HCIEventHeader, sizeof(HCIEventHeader)); - - Pipe_Freeze(); - - return true; -} + case Bluetooth_ProcessEvents: + Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE); + Pipe_Unfreeze(); + + if (Pipe_IsReadWriteAllowed()) + { + BT_HCIEvent_Header_t HCIEventHeader; -static void Bluetooth_DiscardRemainingHCIEventParameters(void) -{ - Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE); - - Pipe_Unfreeze(); - Pipe_Discard_Stream(HCIEventHeader.ParameterLength); - Pipe_ClearIN(); - Pipe_Freeze(); -} + /* Read in the event header to fetch the event code and payload length */ + Pipe_Read_Stream_LE(&HCIEventHeader, sizeof(HCIEventHeader)); + + /* Create a temporary buffer for the event parameters */ + uint8_t EventParams[HCIEventHeader.ParameterLength]; -void Bluetooth_ProcessHCICommands(void) -{ - uint8_t ErrorCode; + /* Read in the event parameters into the temporary buffer */ + Pipe_Read_Stream_LE(&EventParams, HCIEventHeader.ParameterLength); + Pipe_ClearIN(); + + BT_HCI_DEBUG(1, "Event Received (0x%02X)", HCIEventHeader.EventCode); - switch (Bluetooth_HCIProcessingState) - { - case Bluetooth_Init: - Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE); + switch (HCIEventHeader.EventCode) + { + case EVENT_COMMAND_COMPLETE: + BT_HCI_DEBUG(1, "<< Command Complete"); + + /* Check which operation was completed in case we need to process the even parameters */ + switch (((BT_HCIEvent_CommandComplete_t*)&EventParams)->Opcode) + { + case (OGF_CTRLR_INFORMATIONAL | OCF_CTRLR_INFORMATIONAL_READBDADDR): + /* A READ BDADDR command completed, copy over the local device's BDADDR from the response */ + memcpy(Bluetooth_State.LocalBDADDR, + &((BT_HCIEvent_CommandComplete_t*)&EventParams)->ReturnParams[1], + sizeof(Bluetooth_State.LocalBDADDR)); + break; + } + + Bluetooth_State.CurrentHCIState = Bluetooth_State.NextHCIState; + break; + case EVENT_COMMAND_STATUS: + BT_HCI_DEBUG(1, "<< Command Status"); + BT_HCI_DEBUG(2, "-- Status Code: 0x%02X", (((BT_HCIEvent_CommandStatus_t*)&EventParams)->Status)); + + /* If the execution of a command failed, reset the stack */ + if (((BT_HCIEvent_CommandStatus_t*)&EventParams)->Status) + Bluetooth_State.CurrentHCIState = Bluetooth_Init; + break; + case EVENT_CONNECTION_REQUEST: + BT_HCI_DEBUG(1, "<< Connection Request"); + BT_HCI_DEBUG(2, "-- Link Type: 0x%02X", (((BT_HCIEvent_ConnectionRequest_t*)&EventParams)->LinkType)); + + /* Need to store the remote device's BT address in a temporary buffer for later use */ + memcpy(Bluetooth_TempDeviceAddress, + &((BT_HCIEvent_ConnectionRequest_t*)&EventParams)->RemoteAddress, + sizeof(Bluetooth_TempDeviceAddress)); + + bool IsACLConnection = (((BT_HCIEvent_ConnectionRequest_t*)&EventParams)->LinkType == 0x01); + + /* Only accept the connection if it is a ACL (data) connection, a device is not already connected + and the user application has indicated that the connection should be allowed */ + Bluetooth_State.CurrentHCIState = (Bluetooth_Connection.IsConnected || !(IsACLConnection) || + !(Bluetooth_ConnectionRequest(Bluetooth_TempDeviceAddress))) ? + Bluetooth_Conn_RejectConnection : Bluetooth_Conn_AcceptConnection; + + BT_HCI_DEBUG(2, "-- Connection %S", (Bluetooth_State.CurrentHCIState == Bluetooth_Conn_RejectConnection) ? + PSTR("REJECTED") : PSTR("ACCEPTED")); + + break; + case EVENT_PIN_CODE_REQUEST: + BT_HCI_DEBUG(1, "<< Pin Code Request"); + + /* Need to store the remote device's BT address in a temporary buffer for later use */ + memcpy(Bluetooth_TempDeviceAddress, + &((BT_HCIEvent_PinCodeReq_t*)&EventParams)->RemoteAddress, + sizeof(Bluetooth_TempDeviceAddress)); + + Bluetooth_State.CurrentHCIState = Bluetooth_Conn_SendPINCode; + break; + case EVENT_LINK_KEY_REQUEST: + BT_HCI_DEBUG(1, "<< Link Key Request"); + + /* Need to store the remote device's BT address in a temporary buffer for later use */ + memcpy(Bluetooth_TempDeviceAddress, + &((BT_HCIEvent_LinkKeyReq_t*)&EventParams)->RemoteAddress, + sizeof(Bluetooth_TempDeviceAddress)); + + Bluetooth_State.CurrentHCIState = Bluetooth_Conn_SendLinkKeyNAK; + break; + case EVENT_CONNECTION_COMPLETE: + BT_HCI_DEBUG(1, "<< Connection Complete"); + BT_HCI_DEBUG(2, "-- Handle: 0x%04X", ((BT_HCIEvent_ConnectionComplete_t*)&EventParams)->ConnectionHandle); + + /* Need to store the remote device's BT address in a temporary buffer for later use */ + memcpy(Bluetooth_Connection.RemoteAddress, + &((BT_HCIEvent_ConnectionComplete_t*)&EventParams)->RemoteAddress, + sizeof(Bluetooth_TempDeviceAddress)); + + /* Store the created connection handle and indicate that the connection has been established */ + Bluetooth_Connection.ConnectionHandle = ((BT_HCIEvent_ConnectionComplete_t*)&EventParams)->ConnectionHandle; + Bluetooth_Connection.IsConnected = true; + + Bluetooth_ConnectionComplete(); + break; + case EVENT_DISCONNECTION_COMPLETE: + BT_HCI_DEBUG(1, "<< Disconnection Complete"); + + /* Device disconnected, indicate connection information no longer valid */ + Bluetooth_Connection.IsConnected = false; + + Bluetooth_DisconnectionComplete(); + + Bluetooth_State.CurrentHCIState = Bluetooth_Init; + break; + } + } + + Pipe_Freeze(); + break; + case Bluetooth_Init: + BT_HCI_DEBUG(1, "# Init"); + + Bluetooth_State.IsInitialized = false; + + /* Reset the connection information structure to destroy any previous connection state */ memset(&Bluetooth_Connection, 0x00, sizeof(Bluetooth_Connection)); - - Bluetooth_HCIProcessingState = Bluetooth_Init_Reset; + + Bluetooth_State.CurrentHCIState = Bluetooth_Init_Reset; break; case Bluetooth_Init_Reset: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + BT_HCI_DEBUG(1, "# Reset"); + + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_RESET}, + OpCode: (OGF_CTRLR_BASEBAND | OCF_CTRLR_BASEBAND_RESET), ParameterLength: 0, }; - - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_Reset", NULL); - - ErrorCode = Bluetooth_SendHCICommand(NULL, 0); - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } - - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - - Bluetooth_HCIProcessingState = Bluetooth_Init_ReadBufferSize; + /* Send the command to reset the bluetooth dongle controller */ + Bluetooth_SendHCICommand(&HCICommandHeader, NULL, 0); + + Bluetooth_State.NextHCIState = Bluetooth_Init_ReadBufferSize; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_ReadBufferSize: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + BT_HCI_DEBUG(1, "# Read Buffer Size"); + + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_INFORMATIONAL, OCF: OGF_CTRLR_INFORMATIONAL_READBUFFERSIZE}, + OpCode: (OGF_CTRLR_INFORMATIONAL | OCF_CTRLR_INFORMATIONAL_READBUFFERSIZE), ParameterLength: 0, }; - - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_ReadBufferSize", NULL); - - ErrorCode = Bluetooth_SendHCICommand(NULL, 0); - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } + /* Send the command to read the bluetooth buffer size (mandatory before device sends any data) */ + Bluetooth_SendHCICommand(&HCICommandHeader, NULL, 0); - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - - Bluetooth_HCIProcessingState = Bluetooth_Init_SetEventMask; + Bluetooth_State.NextHCIState = Bluetooth_Init_GetBDADDR; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; - case Bluetooth_Init_SetEventMask: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) - { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_SET_EVENT_MASK}, - ParameterLength: 8, - }; + case Bluetooth_Init_GetBDADDR: + BT_HCI_DEBUG(1, "# Get BDADDR"); - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetEventMask", NULL); - - uint8_t EventMask[8] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}; - ErrorCode = Bluetooth_SendHCICommand(&EventMask, 8); - - BT_DEBUG("(HCI) -- Event mask: 0x%02X%02X%02X%02X%02X%02X%02X%02X", EventMask[7], EventMask[6], EventMask[5], EventMask[4], - EventMask[3], EventMask[2], EventMask[1], EventMask[0]); - do + HCICommandHeader = (BT_HCICommand_Header_t) { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } + OpCode: (OGF_CTRLR_INFORMATIONAL | OCF_CTRLR_INFORMATIONAL_READBDADDR), + ParameterLength: 0, + }; - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - + /* Send the command to retrieve the BDADDR of the inserted bluetooth dongle */ + Bluetooth_SendHCICommand(&HCICommandHeader, NULL, 0); - Bluetooth_HCIProcessingState = Bluetooth_Init_SetLocalName; + Bluetooth_State.NextHCIState = Bluetooth_Init_SetLocalName; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_SetLocalName: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + BT_HCI_DEBUG(1, "# Set Local Name"); + + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_WRITE_LOCAL_NAME}, + OpCode: (OGF_CTRLR_BASEBAND | OCF_CTRLR_BASEBAND_WRITE_LOCAL_NAME), ParameterLength: 248, }; - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetLocalName", NULL); - BT_DEBUG("(HCI) -- Name: %s", Bluetooth_DeviceConfiguration.Name); + /* Send the command to set the bluetooth dongle's name for other devices to see */ + Bluetooth_SendHCICommand(&HCICommandHeader, Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name)); - ErrorCode = Bluetooth_SendHCICommand(Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name)); - - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } - - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - - Bluetooth_HCIProcessingState = Bluetooth_Init_SetDeviceClass; + Bluetooth_State.NextHCIState = Bluetooth_Init_SetDeviceClass; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_SetDeviceClass: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + BT_HCI_DEBUG(1, "# Set Device Class"); + + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_WRITE_CLASS_OF_DEVICE}, + OpCode: (OGF_CTRLR_BASEBAND | OCF_CTRLR_BASEBAND_WRITE_CLASS_OF_DEVICE), ParameterLength: 3, }; - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetDeviceClass", NULL); - - ErrorCode = Bluetooth_SendHCICommand(&Bluetooth_DeviceConfiguration.Class, 3); - - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } - - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); + /* Send the command to set the class of the device for other devices to see */ + Bluetooth_SendHCICommand(&HCICommandHeader, &Bluetooth_DeviceConfiguration.Class, 3); - Bluetooth_HCIProcessingState = Bluetooth_Init_WriteScanEnable; + Bluetooth_State.NextHCIState = Bluetooth_Init_WriteScanEnable; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_WriteScanEnable: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + BT_HCI_DEBUG(1, "# Write Scan Enable"); + + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_WRITE_SCAN_ENABLE}, + OpCode: (OGF_CTRLR_BASEBAND | OCF_CTRLR_BASEBAND_WRITE_SCAN_ENABLE), ParameterLength: 1, }; - - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_WriteScanEnable", NULL); - uint8_t Interval = InquiryAndPageScans; - ErrorCode = Bluetooth_SendHCICommand(&Interval, 1); - - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } - - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - - Bluetooth_HCIProcessingState = Bluetooth_PrepareToProcessEvents; - break; - case Bluetooth_PrepareToProcessEvents: - BT_DEBUG("(HCI) Enter State: Bluetooth_ProcessEvents", NULL); - - Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; - break; - case Bluetooth_ProcessEvents: - if (Bluetooth_GetNextHCIEventHeader()) - { - BT_DEBUG("(HCI) Event Code: 0x%02X", HCIEventHeader.EventCode); + uint8_t Interval = BT_SCANMODE_InquiryAndPageScans; - if (HCIEventHeader.EventCode == EVENT_COMMAND_STATUS) - { - Bluetooth_HCIEvent_CommandStatus_Header_t CommandStatusHeader; - - Pipe_Read_Stream_LE(&CommandStatusHeader, sizeof(CommandStatusHeader)); - HCIEventHeader.ParameterLength -= sizeof(CommandStatusHeader); - - BT_DEBUG("(HCI) >> Command status: 0x%02X", CommandStatusHeader.CommandStatus); - - if (CommandStatusHeader.CommandStatus) - Bluetooth_HCIProcessingState = Bluetooth_Init; - } - else if (HCIEventHeader.EventCode == EVENT_CONNECTION_REQUEST) - { - Bluetooth_HCIEvent_ConnectionRequest_Header_t ConnectionRequestParams; - - Pipe_Read_Stream_LE(&ConnectionRequestParams, sizeof(ConnectionRequestParams)); - HCIEventHeader.ParameterLength -= sizeof(ConnectionRequestParams); - - BT_DEBUG("(HCI) >> Connection Request from device %02X:%02X:%02X:%02X:%02X:%02X", - ConnectionRequestParams.RemoteAddress[5], ConnectionRequestParams.RemoteAddress[4], - ConnectionRequestParams.RemoteAddress[3], ConnectionRequestParams.RemoteAddress[2], - ConnectionRequestParams.RemoteAddress[1], ConnectionRequestParams.RemoteAddress[0]); - BT_DEBUG("(HCI) -- Device Class: 0x%02X%04X", ConnectionRequestParams.ClassOfDevice_Service, - ConnectionRequestParams.ClassOfDevice_MajorMinor); - BT_DEBUG("(HCI) -- Link Type: 0x%02x", ConnectionRequestParams.LinkType); - - memcpy(Bluetooth_TempDeviceAddress, ConnectionRequestParams.RemoteAddress, - sizeof(Bluetooth_TempDeviceAddress)); - - Bluetooth_HCIProcessingState = (Bluetooth_Connection.IsConnected) ? Bluetooth_Conn_RejectConnection : - Bluetooth_Conn_AcceptConnection; - } - else if (HCIEventHeader.EventCode == EVENT_DISCONNECTION_COMPLETE) - { - BT_DEBUG("(HCI) >> Disconnection from device complete.", NULL); - Bluetooth_HCIProcessingState = Bluetooth_Init; - } - else if (HCIEventHeader.EventCode == EVENT_CONNECTION_COMPLETE) - { - Bluetooth_HCIEvent_ConnectionComplete_Header_t ConnectionCompleteParams; - - Pipe_Read_Stream_LE(&ConnectionCompleteParams, sizeof(ConnectionCompleteParams)); - HCIEventHeader.ParameterLength -= sizeof(ConnectionCompleteParams); - - BT_DEBUG("(HCI) >> Connection to device complete.", NULL); - BT_DEBUG("(HCI) -- Status: %d", ConnectionCompleteParams.Status); - BT_DEBUG("(HCI) -- Handle: %d", ConnectionCompleteParams.ConnectionHandle); - - if (ConnectionCompleteParams.Status == 0x00) - { - memcpy(Bluetooth_Connection.DeviceAddress, ConnectionCompleteParams.RemoteAddress, - sizeof(Bluetooth_Connection.DeviceAddress)); - Bluetooth_Connection.ConnectionHandle = ConnectionCompleteParams.ConnectionHandle; - Bluetooth_Connection.IsConnected = true; - } - } - else if (HCIEventHeader.EventCode == EVENT_PIN_CODE_REQUEST) - { - Pipe_Read_Stream_LE(&Bluetooth_TempDeviceAddress, sizeof(Bluetooth_TempDeviceAddress)); - HCIEventHeader.ParameterLength -= sizeof(Bluetooth_TempDeviceAddress); - - BT_DEBUG("(HCI) >> PIN code Request from device %02X:%02X:%02X:%02X:%02X:%02X", - Bluetooth_TempDeviceAddress[5], Bluetooth_TempDeviceAddress[4], Bluetooth_TempDeviceAddress[3], - Bluetooth_TempDeviceAddress[2], Bluetooth_TempDeviceAddress[1], Bluetooth_TempDeviceAddress[0]); - - Bluetooth_HCIProcessingState = Bluetooth_Conn_SendPINCode; - } - - BT_DEBUG("(HCI) -- Unread Event Param Length: %d", HCIEventHeader.ParameterLength); + /* Send the command to set the remote device scanning mode */ + Bluetooth_SendHCICommand(&HCICommandHeader, &Interval, 1); + + Bluetooth_State.NextHCIState = Bluetooth_Init_FinalizeInit; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; + break; + case Bluetooth_Init_FinalizeInit: + Bluetooth_State.IsInitialized = true; - Bluetooth_DiscardRemainingHCIEventParameters(); - } + /* Fire the user application callback to indicate that the stack is now fully initialized */ + Bluetooth_StackInitialized(); + Bluetooth_State.NextHCIState = Bluetooth_ProcessEvents; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_AcceptConnection: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + BT_HCI_DEBUG(1, "# Accept Connection"); + + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST}, - ParameterLength: sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_Params_t), + OpCode: (OGF_LINK_CONTROL | OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST), + ParameterLength: sizeof(BT_HCICommand_AcceptConnectionReq_t), }; - - BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_AcceptConnection", NULL); - Bluetooth_HCICommand_AcceptConnectionRequest_Params_t AcceptConnectionParams; - + /* Copy over the temporary BT device address saved from the Connection Request event, indicate slave + connection role */ + BT_HCICommand_AcceptConnectionReq_t AcceptConnectionParams; memcpy(AcceptConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress, - sizeof(Bluetooth_TempDeviceAddress)); + sizeof(AcceptConnectionParams.RemoteAddress)); AcceptConnectionParams.SlaveRole = true; - Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(AcceptConnectionParams)); + /* Send the command to accept the remote connection request */ + Bluetooth_SendHCICommand(&HCICommandHeader, &AcceptConnectionParams, sizeof(BT_HCICommand_AcceptConnectionReq_t)); - Bluetooth_HCIProcessingState = Bluetooth_PrepareToProcessEvents; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_RejectConnection: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + BT_HCI_DEBUG(1, "# Reject Connection"); + + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST}, - ParameterLength: sizeof(Bluetooth_HCICommand_RejectConnectionRequest_Params_t), + OpCode: (OGF_LINK_CONTROL | OCF_LINK_CONTROL_REJECT_CONNECTION_REQUEST), + ParameterLength: sizeof(BT_HCICommand_RejectConnectionReq_t), }; - - BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_RejectConnection", NULL); - - Bluetooth_HCICommand_RejectConnectionRequest_Params_t RejectConnectionParams; - memcpy(RejectConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress, - sizeof(Bluetooth_TempDeviceAddress)); - RejectConnectionParams.Reason = ERROR_LIMITED_RESOURCES; + /* Copy over the temporary BT device address saved from the Connection Request event, indicate failure + to accept the connection due to limited device resources or incorrect device address */ + BT_HCICommand_RejectConnectionReq_t RejectConnectionParams; + memcpy(RejectConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(RejectConnectionParams.RemoteAddress)); + RejectConnectionParams.Reason = Bluetooth_Connection.IsConnected ? ERROR_LIMITED_RESOURCES : ERROR_UNACCEPTABLE_BDADDR; - Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(AcceptConnectionParams)); + /* Send the command to reject the remote connection request */ + Bluetooth_SendHCICommand(&HCICommandHeader, &RejectConnectionParams, sizeof(BT_HCICommand_RejectConnectionReq_t)); - Bluetooth_HCIProcessingState = Bluetooth_PrepareToProcessEvents; + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_SendPINCode: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + BT_HCI_DEBUG(1, "# Send Pin Code"); + + HCICommandHeader = (BT_HCICommand_Header_t) { - OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_PIN_CODE_REQUEST_REPLY}, - ParameterLength: sizeof(Bluetooth_HCICommand_PinCodeResponse_Params_t), + OpCode: (OGF_LINK_CONTROL | OCF_LINK_CONTROL_PIN_CODE_REQUEST_REPLY), + ParameterLength: sizeof(BT_HCICommand_PinCodeResp_t), }; - - BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_SendPINCode", NULL); - BT_DEBUG("(HCI) -- PIN: %s", Bluetooth_DeviceConfiguration.PINCode); - Bluetooth_HCICommand_PinCodeResponse_Params_t PINCodeRequestParams; - - memcpy(PINCodeRequestParams.RemoteAddress, Bluetooth_TempDeviceAddress, - sizeof(Bluetooth_TempDeviceAddress)); + /* Copy over the temporary BT device address saved from the PIN Code Request event, copy over the + local PIN authentication code to the response */ + BT_HCICommand_PinCodeResp_t PINCodeRequestParams; + memcpy(PINCodeRequestParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(PINCodeRequestParams.RemoteAddress)); PINCodeRequestParams.PINCodeLength = strlen(Bluetooth_DeviceConfiguration.PINCode); - memcpy(PINCodeRequestParams.PINCode, Bluetooth_DeviceConfiguration.PINCode, - sizeof(Bluetooth_DeviceConfiguration.PINCode)); + memcpy(PINCodeRequestParams.PINCode, Bluetooth_DeviceConfiguration.PINCode, sizeof(PINCodeRequestParams.PINCode)); - Bluetooth_SendHCICommand(&PINCodeRequestParams, sizeof(PINCodeRequestParams)); - - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_DeviceState == DEVICE_STATE_Unattached) - return; - } + /* Send the command to transmit the device's local PIN number for authentication */ + Bluetooth_SendHCICommand(&HCICommandHeader, &PINCodeRequestParams, sizeof(BT_HCICommand_PinCodeResp_t)); + + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; + break; + case Bluetooth_Conn_SendLinkKeyNAK: + BT_HCI_DEBUG(1, "# Send Link Key NAK"); - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); + HCICommandHeader = (BT_HCICommand_Header_t) + { + OpCode: (OGF_LINK_CONTROL | OCF_LINK_CONTROL_LINK_KEY_REQUEST_NEG_REPLY), + ParameterLength: sizeof(BT_HCICommand_LinkKeyNAKResp_t), + }; + + /* Copy over the temporary BT device address saved from the Link Key Request event */ + BT_HCICommand_LinkKeyNAKResp_t LinkKeyNAKParams; + memcpy(LinkKeyNAKParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(LinkKeyNAKParams.RemoteAddress)); - Bluetooth_HCIProcessingState = Bluetooth_PrepareToProcessEvents; + /* Send the command to transmit the link key NAK to the receiver */ + Bluetooth_SendHCICommand(&HCICommandHeader, &LinkKeyNAKParams, sizeof(BT_HCICommand_LinkKeyNAKResp_t)); + + Bluetooth_State.CurrentHCIState = Bluetooth_ProcessEvents; break; } } + +/** Sends a Bluetooth HCI control command to the attached Bluetooth device. + * + * \param[in] HCICommandHeader HCI command header to send to the attached device + * \param[in] Parameters Pointer to the source of the control parameters (if any) + * \param[in] ParameterLength Length of the parameters to send in bytes + * + * \return A value from the USB_Host_SendControlErrorCodes_t enum. + */ +static uint8_t Bluetooth_SendHCICommand(const BT_HCICommand_Header_t* const HCICommandHeader, const void* Parameters, const uint16_t ParameterLength) +{ + /* Need to reserve the amount of bytes given in the header for the complete payload */ + uint8_t CommandBuffer[sizeof(BT_HCICommand_Header_t) + HCICommandHeader->ParameterLength]; + + USB_ControlRequest = (USB_Request_Header_t) + { + .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_DEVICE), + .bRequest = 0, + .wValue = 0, + .wIndex = 0, + .wLength = sizeof(CommandBuffer) + }; + + /* Copy over the HCI command header to the allocated buffer */ + memcpy(CommandBuffer, HCICommandHeader, sizeof(BT_HCICommand_Header_t)); + + /* Zero out the parameter section of the response so that all padding bytes are known to be zero */ + memset(&CommandBuffer[sizeof(BT_HCICommand_Header_t)], 0x00, HCICommandHeader->ParameterLength); + + /* Copy over the command parameters (if any) to the command buffer - note, the number of actual source parameter bytes + may differ to those in the header; any difference in length is filled with 0x00 padding bytes */ + memcpy(&CommandBuffer[sizeof(BT_HCICommand_Header_t)], Parameters, ParameterLength); + + Pipe_SelectPipe(PIPE_CONTROLPIPE); + return USB_Host_SendControlRequest(CommandBuffer); +}