X-Git-Url: http://git.linex4red.de/pub/lufa.git/blobdiff_plain/3705330dd32f54cf15842511b7657d2f321c11ad..fd96b288824caaa3ee4e5e03887f016de9df80cf:/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 ffec03157..dd2a3e5cf 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 @@ -30,14 +30,15 @@ #include "BluetoothHCICommands.h" -static Bluetooth_HCICommand_Header_t HCICommandHeader; -static Bluetooth_HCIEvent_Header_t HCIEventHeader; +static Bluetooth_HCICommand_Header_t HCICommandHeader; - uint8_t Bluetooth_HCIProcessingState; -static uint8_t Bluetooth_TempDeviceAddress[6]; + uint8_t Bluetooth_HCIProcessingState; +static uint8_t Bluetooth_HCINextState; +static uint8_t Bluetooth_TempDeviceAddress[6]; -static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint8_t ParamLength) +static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint16_t ParameterLength) { + /* Need to reserve the amount of bytes given in the header for the complete payload */ uint8_t CommandBuffer[sizeof(HCICommandHeader) + HCICommandHeader.ParameterLength]; USB_ControlRequest = (USB_Request_Header_t) @@ -48,134 +49,138 @@ static uint8_t Bluetooth_SendHCICommand(void* Parameters, uint8_t ParamLength) .wIndex = 0, .wLength = sizeof(CommandBuffer) }; - - memset(CommandBuffer, 0x00, sizeof(CommandBuffer)); + + /* Copy over the HCI command header to the allocated buffer */ memcpy(CommandBuffer, &HCICommandHeader, sizeof(HCICommandHeader)); - if (ParamLength) - memcpy(&CommandBuffer[sizeof(HCICommandHeader)], Parameters, ParamLength); + /* Zero out the parameter section of the response to ensure that any padding bytes do not expose private RAM contents */ + memset(&CommandBuffer[sizeof(HCICommandHeader)], 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(HCICommandHeader)], Parameters, ParameterLength); + Pipe_SelectPipe(PIPE_CONTROLPIPE); - return USB_Host_SendControlRequest(CommandBuffer); } -static bool Bluetooth_GetNextHCIEventHeader(void) -{ - Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE); - Pipe_Unfreeze(); - - if (!(Pipe_IsReadWriteAllowed())) - { - Pipe_Freeze(); - return false; - } - - Pipe_Read_Stream_LE(&HCIEventHeader, sizeof(HCIEventHeader)); - - Pipe_Freeze(); - - return true; -} - -static void Bluetooth_DiscardRemainingHCIEventParameters(void) -{ - Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE); - - Pipe_Unfreeze(); - Pipe_Discard_Stream(HCIEventHeader.ParameterLength); - Pipe_ClearIN(); - Pipe_Freeze(); -} - void Bluetooth_ProcessHCICommands(void) { - uint8_t ErrorCode; - switch (Bluetooth_HCIProcessingState) { - case Bluetooth_Init: + case Bluetooth_ProcessEvents: Pipe_SelectPipe(BLUETOOTH_EVENTS_PIPE); + Pipe_Unfreeze(); - memset(&Bluetooth_Connection, 0x00, sizeof(Bluetooth_Connection)); - - Bluetooth_HCIProcessingState = Bluetooth_Init_Reset; - break; - case Bluetooth_Init_Reset: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) + if (Pipe_IsReadWriteAllowed()) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_RESET}, - ParameterLength: 0, - }; - - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_Reset", NULL); - - ErrorCode = Bluetooth_SendHCICommand(NULL, 0); + Bluetooth_HCIEvent_Header_t HCIEventHeader; - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } - - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - - Bluetooth_HCIProcessingState = Bluetooth_Init_ReadBufferSize; - break; - case Bluetooth_Init_ReadBufferSize: - HCICommandHeader = (Bluetooth_HCICommand_Header_t) - { - OpCode: {OGF: OGF_CTRLR_INFORMATIONAL, OCF: OGF_CTRLR_INFORMATIONAL_READBUFFERSIZE}, - ParameterLength: 0, - }; - - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_ReadBufferSize", NULL); + /* 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]; - ErrorCode = Bluetooth_SendHCICommand(NULL, 0); + /* Read in the event parameters into the temporary buffer */ + Pipe_Read_Stream_LE(&EventParams, HCIEventHeader.ParameterLength); + Pipe_ClearIN(); - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) + BT_HCI_DEBUG("Event Code: 0x%02X", HCIEventHeader.EventCode); + + switch (HCIEventHeader.EventCode) { - if (USB_HostState == HOST_STATE_Unattached) - return; + case EVENT_COMMAND_COMPLETE: + Bluetooth_HCIProcessingState = Bluetooth_HCINextState; + + BT_HCI_DEBUG(">> Command Complete (Opcode 0x%04x)", + ((Bluetooth_HCIEvent_CommandComplete_t*)&EventParams)->Opcode); + break; + case EVENT_COMMAND_STATUS: + /* If the execution of a command failed, reset the stack */ + if (((Bluetooth_HCIEvent_CommandStatus_t*)&EventParams)->Status) + Bluetooth_HCIProcessingState = Bluetooth_Init; + + BT_HCI_DEBUG(">> Command Status: 0x%02X", + ((Bluetooth_HCIEvent_CommandStatus_t*)&EventParams)->Status); + break; + case EVENT_CONNECTION_REQUEST: + /* Need to store the remote device's BT address in a temporary buffer for later use */ + memcpy(Bluetooth_TempDeviceAddress, + &((Bluetooth_HCIEvent_ConnectionRequest_t*)&EventParams)->RemoteAddress, + sizeof(Bluetooth_TempDeviceAddress)); + + /* Only accept the connection if it is a ACL (data) connection */ + Bluetooth_HCIProcessingState = (Bluetooth_Connection.IsConnected || + (((Bluetooth_HCIEvent_ConnectionRequest_t*)&EventParams)->LinkType != 0x01)) ? + Bluetooth_Conn_RejectConnection : Bluetooth_Conn_AcceptConnection; + + BT_HCI_DEBUG(">> Connection 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]); + break; + case EVENT_PIN_CODE_REQUEST: + /* Need to store the remote device's BT address in a temporary buffer for later use */ + memcpy(Bluetooth_TempDeviceAddress, + &((Bluetooth_HCIEvent_PinCodeRequest_t*)&EventParams)->RemoteAddress, + sizeof(Bluetooth_TempDeviceAddress)); + + Bluetooth_HCIProcessingState = Bluetooth_Conn_SendPINCode; + + BT_HCI_DEBUG(">> PIN 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]); + break; + case EVENT_CONNECTION_COMPLETE: + /* Need to store the remote device's BT address in a temporary buffer for later use */ + memcpy(Bluetooth_Connection.RemoteAddress, + &((Bluetooth_HCIEvent_ConnectionComplete_t*)&EventParams)->RemoteAddress, + sizeof(Bluetooth_TempDeviceAddress)); + + /* Store the created connection handle and indicate that the connection has been established */ + Bluetooth_Connection.ConnectionHandle = ((Bluetooth_HCIEvent_ConnectionComplete_t*)&EventParams)->ConnectionHandle; + Bluetooth_Connection.IsConnected = true; + + BT_HCI_DEBUG(">> Connection Complete to Device %02X:%02X:%02X:%02X:%02X:%02X, Handle 0x%04x", + Bluetooth_Connection.RemoteAddress[5], Bluetooth_Connection.RemoteAddress[4], + Bluetooth_Connection.RemoteAddress[3], Bluetooth_Connection.RemoteAddress[2], + Bluetooth_Connection.RemoteAddress[1], Bluetooth_Connection.RemoteAddress[0], + Bluetooth_Connection.ConnectionHandle); + break; + case EVENT_DISCONNECTION_COMPLETE: + BT_HCI_DEBUG(">> Disconnection Complete", NULL); + + /* Device disconnected, indicate connection information no longer valid */ + Bluetooth_Connection.IsConnected = false; + + Bluetooth_HCIProcessingState = Bluetooth_Init; + break; } + } + + Pipe_Freeze(); + + break; + case Bluetooth_Init: + /* Reset the connection information structure to destroy any previous connection state */ + memset(&Bluetooth_Connection, 0x00, sizeof(Bluetooth_Connection)); - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - - Bluetooth_HCIProcessingState = Bluetooth_Init_SetEventMask; + Bluetooth_HCIProcessingState = Bluetooth_Init_Reset; break; - case Bluetooth_Init_SetEventMask: + case Bluetooth_Init_Reset: HCICommandHeader = (Bluetooth_HCICommand_Header_t) { - OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_SET_EVENT_MASK}, - ParameterLength: 8, + OpCode: {OGF: OGF_CTRLR_BASEBAND, OCF: OCF_CTRLR_BASEBAND_RESET}, + ParameterLength: 0, }; - - 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_HCI_DEBUG("Enter State: Bluetooth_Init_Reset", NULL); - 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 - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } - - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - - - Bluetooth_HCIProcessingState = Bluetooth_Init_SetLocalName; + /* Send the command to reset the bluetooth dongle controller */ + Bluetooth_SendHCICommand(NULL, 0); + + Bluetooth_HCINextState = Bluetooth_Init_SetLocalName; + Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_SetLocalName: HCICommandHeader = (Bluetooth_HCICommand_Header_t) @@ -184,23 +189,14 @@ void Bluetooth_ProcessHCICommands(void) ParameterLength: 248, }; - BT_DEBUG("(HCI) Enter State: Bluetooth_Init_SetLocalName", NULL); - BT_DEBUG("(HCI) -- Name: %s", Bluetooth_DeviceConfiguration.Name); + BT_HCI_DEBUG("Enter State: Bluetooth_Init_SetLocalName", NULL); + BT_HCI_DEBUG("-- Name: %s", Bluetooth_DeviceConfiguration.Name); - ErrorCode = Bluetooth_SendHCICommand(Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name)); - - do - { - while (!(Bluetooth_GetNextHCIEventHeader())) - { - if (USB_HostState == HOST_STATE_Unattached) - return; - } + /* Send the command to set the bluetooth dongle's name for other devices to see */ + Bluetooth_SendHCICommand(Bluetooth_DeviceConfiguration.Name, strlen(Bluetooth_DeviceConfiguration.Name)); - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); - - Bluetooth_HCIProcessingState = Bluetooth_Init_SetDeviceClass; + Bluetooth_HCINextState = Bluetooth_Init_SetDeviceClass; + Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_SetDeviceClass: HCICommandHeader = (Bluetooth_HCICommand_Header_t) @@ -209,22 +205,13 @@ void Bluetooth_ProcessHCICommands(void) 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; - } + BT_HCI_DEBUG("Enter State: Bluetooth_Init_SetDeviceClass", NULL); - 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(&Bluetooth_DeviceConfiguration.Class, 3); - Bluetooth_HCIProcessingState = Bluetooth_Init_WriteScanEnable; + Bluetooth_HCINextState = Bluetooth_Init_WriteScanEnable; + Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; break; case Bluetooth_Init_WriteScanEnable: HCICommandHeader = (Bluetooth_HCICommand_Header_t) @@ -233,179 +220,78 @@ void Bluetooth_ProcessHCICommands(void) 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); + BT_HCI_DEBUG("Enter State: Bluetooth_Init_WriteScanEnable", NULL); - 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); - - Bluetooth_DiscardRemainingHCIEventParameters(); - } - + /* Send the command to set the remote device scanning mode */ + Bluetooth_SendHCICommand(&Interval, 1); + + Bluetooth_HCINextState = Bluetooth_ProcessEvents; + Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_AcceptConnection: HCICommandHeader = (Bluetooth_HCICommand_Header_t) { OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST}, - ParameterLength: sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_Params_t), + ParameterLength: sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_t), }; - BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_AcceptConnection", NULL); + BT_HCI_DEBUG("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 */ + Bluetooth_HCICommand_AcceptConnectionRequest_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(&AcceptConnectionParams, sizeof(Bluetooth_HCICommand_AcceptConnectionRequest_t)); - Bluetooth_HCIProcessingState = Bluetooth_PrepareToProcessEvents; + Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_RejectConnection: HCICommandHeader = (Bluetooth_HCICommand_Header_t) { - OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_ACCEPT_CONNECTION_REQUEST}, - ParameterLength: sizeof(Bluetooth_HCICommand_RejectConnectionRequest_Params_t), + OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_REJECT_CONNECTION_REQUEST}, + ParameterLength: sizeof(Bluetooth_HCICommand_RejectConnectionRequest_t), }; - BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_RejectConnection", NULL); - - Bluetooth_HCICommand_RejectConnectionRequest_Params_t RejectConnectionParams; + BT_HCI_DEBUG("Enter State: Bluetooth_Conn_RejectConnection", NULL); - memcpy(RejectConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress, - sizeof(Bluetooth_TempDeviceAddress)); + /* Copy over the temporary BT device address saved from the Connection Request event, indicate failure + to accept the connection due to limited device resources */ + Bluetooth_HCICommand_RejectConnectionRequest_t RejectConnectionParams; + memcpy(RejectConnectionParams.RemoteAddress, Bluetooth_TempDeviceAddress, sizeof(RejectConnectionParams.RemoteAddress)); RejectConnectionParams.Reason = ERROR_LIMITED_RESOURCES; - Bluetooth_SendHCICommand(&AcceptConnectionParams, sizeof(AcceptConnectionParams)); + /* Send the command to reject the remote connection request */ + Bluetooth_SendHCICommand(&RejectConnectionParams, sizeof(Bluetooth_HCICommand_RejectConnectionRequest_t)); - Bluetooth_HCIProcessingState = Bluetooth_PrepareToProcessEvents; + Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; break; case Bluetooth_Conn_SendPINCode: HCICommandHeader = (Bluetooth_HCICommand_Header_t) { OpCode: {OGF: OGF_LINK_CONTROL, OCF: OCF_LINK_CONTROL_PIN_CODE_REQUEST_REPLY}, - ParameterLength: sizeof(Bluetooth_HCICommand_PinCodeResponse_Params_t), + ParameterLength: sizeof(Bluetooth_HCICommand_PinCodeResponse_t), }; - BT_DEBUG("(HCI) Enter State: Bluetooth_Conn_SendPINCode", NULL); - BT_DEBUG("(HCI) -- PIN: %s", Bluetooth_DeviceConfiguration.PINCode); + BT_HCI_DEBUG("Enter State: Bluetooth_Conn_SendPINCode", NULL); + BT_HCI_DEBUG("-- 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 */ + Bluetooth_HCICommand_PinCodeResponse_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_HostState == HOST_STATE_Unattached) - return; - } - - Bluetooth_DiscardRemainingHCIEventParameters(); - } while (HCIEventHeader.EventCode != EVENT_COMMAND_COMPLETE); + /* Send the command to transmit the device's local PIN number for authentication */ + Bluetooth_SendHCICommand(&PINCodeRequestParams, sizeof(Bluetooth_HCICommand_PinCodeResponse_t)); - Bluetooth_HCIProcessingState = Bluetooth_PrepareToProcessEvents; + Bluetooth_HCIProcessingState = Bluetooth_ProcessEvents; break; } }