diff options
Diffstat (limited to 'Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.c')
| -rw-r--r-- | Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.c | 809 |
1 files changed, 0 insertions, 809 deletions
diff --git a/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.c b/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.c deleted file mode 100644 index a02a66b7b..000000000 --- a/Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.c +++ /dev/null @@ -1,809 +0,0 @@ -/* - LUFA Library - Copyright (C) Dean Camera, 2012. - - dean [at] fourwalledcubicle [dot] com - www.lufa-lib.org -*/ - -/* - Copyright 2012 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 - software, including all implied warranties of merchantability - and fitness. In no event shall the author be liable for any - special, indirect or consequential damages or any damages - whatsoever resulting from loss of use, data or profits, whether - in an action of contract, negligence or other tortious action, - arising out of or in connection with the use or performance of - this software. -*/ - -/** \file - * - * Bluetooth L2CAP layer management code. This module managed the creation, - * configuration and teardown of L2CAP channels, and manages packet reception - * and sending to and from other Bluetooth devices. - */ - -/* - TODO: Make SendPacket respect receiver's MTU - TODO: Make ReceivePacket stitch together MTU fragments (?) - */ - -#define INCLUDE_FROM_BLUETOOTH_ACLPACKETS_C -#include "BluetoothACLPackets.h" - -/** Bluetooth ACL processing task. This task should be called repeatedly the main Bluetooth - * stack task to manage the ACL processing state. - */ -void Bluetooth_ACLTask(void) -{ - /* Process incoming ACL packets, if any */ - Bluetooth_ProcessIncomingACLPackets(); - - /* Check for any half-open channels, send configuration details to the remote device if found */ - for (uint8_t i = 0; i < BLUETOOTH_MAX_OPEN_CHANNELS; i++) - { - Bluetooth_Channel_t* ChannelData = &Bluetooth_Connection.Channels[i]; - - bool MustSendConfigReq = true; - - /* Check if we are in a channel state which requires a configuration request to be sent */ - switch (ChannelData->State) - { - case BT_Channel_Config_WaitConfig: - ChannelData->State = BT_Channel_Config_WaitReqResp; - break; - case BT_Channel_Config_WaitSendConfig: - ChannelData->State = BT_Channel_Config_WaitResp; - break; - default: - MustSendConfigReq = false; - break; - } - - /* Only send a configuration request if it the channel was in a state which required it */ - if (MustSendConfigReq) - { - struct - { - BT_Signal_Header_t SignalCommandHeader; - BT_Signal_ConfigurationReq_t ConfigurationRequest; - - struct - { - BT_Config_Option_Header_t Header; - uint16_t Value; - } Option_LocalMTU; - } PacketData; - - /* Fill out the Signal Command header in the response packet */ - PacketData.SignalCommandHeader.Code = BT_SIGNAL_CONFIGURATION_REQUEST; - PacketData.SignalCommandHeader.Identifier = ++Bluetooth_Connection.SignalingIdentifier; - PacketData.SignalCommandHeader.Length = sizeof(PacketData.ConfigurationRequest) + - sizeof(PacketData.Option_LocalMTU); - - /* Fill out the Configuration Request in the response packet, including local MTU information */ - PacketData.ConfigurationRequest.DestinationChannel = ChannelData->RemoteNumber; - PacketData.ConfigurationRequest.Flags = 0; - PacketData.Option_LocalMTU.Header.Type = BT_CONFIG_OPTION_MTU; - PacketData.Option_LocalMTU.Header.Length = sizeof(PacketData.Option_LocalMTU.Value); - PacketData.Option_LocalMTU.Value = ChannelData->LocalMTU; - - Bluetooth_SendPacket(&PacketData, sizeof(PacketData), NULL); - - BT_ACL_DEBUG(1, ">> L2CAP Configuration Request"); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", PacketData.ConfigurationRequest.DestinationChannel); - } - } -} - -/** Incoming ACL packet processing task. This task is called by the main ACL processing task to read in and process - * any incoming ACL packets to the device, handling signal requests as they are received or passing along channel - * data to the user application. - */ -static void Bluetooth_ProcessIncomingACLPackets(void) -{ - BT_ACL_Header_t ACLPacketHeader; - BT_DataPacket_Header_t DataHeader; - - Pipe_SelectPipe(BLUETOOTH_DATA_IN_PIPE); - Pipe_Unfreeze(); - - if (!(Pipe_IsReadWriteAllowed())) - { - Pipe_Freeze(); - return; - } - - /* Read in the received ACL packet headers when it has been discovered that a packet has been received */ - Pipe_Read_Stream_LE(&ACLPacketHeader, sizeof(ACLPacketHeader), NULL); - Pipe_Read_Stream_LE(&DataHeader, sizeof(DataHeader), NULL); - - BT_ACL_DEBUG(2, ""); - BT_ACL_DEBUG(2, "Packet Received"); - BT_ACL_DEBUG(2, "-- Connection Handle: 0x%04X", (ACLPacketHeader.ConnectionHandle & 0x0FFF)); - BT_ACL_DEBUG(2, "-- Data Length: 0x%04X", ACLPacketHeader.DataLength); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", DataHeader.DestinationChannel); - BT_ACL_DEBUG(2, "-- Payload Length: 0x%04X", DataHeader.PayloadLength); - - /* Check the packet's destination channel - signaling channel should be processed by the stack internally */ - if (DataHeader.DestinationChannel == BT_CHANNEL_SIGNALING) - { - /* Read in the Signal Command header of the incoming packet */ - BT_Signal_Header_t SignalCommandHeader; - Pipe_Read_Stream_LE(&SignalCommandHeader, sizeof(SignalCommandHeader), NULL); - - /* Dispatch to the appropriate handler function based on the Signal message code */ - switch (SignalCommandHeader.Code) - { - case BT_SIGNAL_CONNECTION_REQUEST: - Bluetooth_Signal_ConnectionReq(&SignalCommandHeader); - break; - case BT_SIGNAL_CONNECTION_RESPONSE: - Bluetooth_Signal_ConnectionResp(&SignalCommandHeader); - break; - case BT_SIGNAL_CONFIGURATION_REQUEST: - Bluetooth_Signal_ConfigurationReq(&SignalCommandHeader); - break; - case BT_SIGNAL_CONFIGURATION_RESPONSE: - Bluetooth_Signal_ConfigurationResp(&SignalCommandHeader); - break; - case BT_SIGNAL_DISCONNECTION_REQUEST: - Bluetooth_Signal_DisconnectionReq(&SignalCommandHeader); - break; - case BT_SIGNAL_DISCONNECTION_RESPONSE: - Bluetooth_Signal_DisconnectionResp(&SignalCommandHeader); - break; - case BT_SIGNAL_ECHO_REQUEST: - Bluetooth_Signal_EchoReq(&SignalCommandHeader); - break; - case BT_SIGNAL_INFORMATION_REQUEST: - Bluetooth_Signal_InformationReq(&SignalCommandHeader); - break; - case BT_SIGNAL_COMMAND_REJECT: - BT_ACL_DEBUG(1, "<< Command Reject"); - - uint16_t RejectReason; - Pipe_Read_Stream_LE(&RejectReason, sizeof(RejectReason), NULL); - Pipe_Discard_Stream(ACLPacketHeader.DataLength - sizeof(RejectReason), NULL); - Pipe_ClearIN(); - Pipe_Freeze(); - - BT_ACL_DEBUG(2, "-- Reason: %d", RejectReason); - break; - default: - BT_ACL_DEBUG(1, "<< Unknown Signaling Command 0x%02X", SignalCommandHeader.Code); - - Pipe_Discard_Stream(ACLPacketHeader.DataLength, NULL); - Pipe_ClearIN(); - Pipe_Freeze(); - break; - } - } - else - { - /* Non-signaling packet received, read in the packet contents and pass to the user application */ - uint8_t PacketData[DataHeader.PayloadLength]; - Pipe_Read_Stream_LE(PacketData, DataHeader.PayloadLength, NULL); - Pipe_ClearIN(); - Pipe_Freeze(); - - Bluetooth_PacketReceived(PacketData, DataHeader.PayloadLength, - Bluetooth_GetChannelData(DataHeader.DestinationChannel, CHANNEL_SEARCH_LOCALNUMBER)); - } -} - -/** Retrieves the channel information structure with the given local or remote channel number from the channel list. - * - * \param[in] SearchValue Value to search for in the channel structure list - * \param[in] SearchKey Key to search within the channel structure, a \c CHANNEL_SEARCH_* mask - * - * \return Pointer to the matching channel information structure in the channel table if found, NULL otherwise - */ -Bluetooth_Channel_t* Bluetooth_GetChannelData(const uint16_t SearchValue, - const uint8_t SearchKey) -{ - for (uint8_t i = 0; i < BLUETOOTH_MAX_OPEN_CHANNELS; i++) - { - Bluetooth_Channel_t* ChannelData = &Bluetooth_Connection.Channels[i]; - - /* Closed channels should be ignored as they are not considered valid data */ - if (ChannelData->State == BT_Channel_Closed) - continue; - - bool FoundMatch = false; - - /* Search the current channel for the search key to see if it matches */ - switch (SearchKey) - { - case CHANNEL_SEARCH_LOCALNUMBER: - FoundMatch = (SearchValue == ChannelData->LocalNumber); - break; - case CHANNEL_SEARCH_REMOTENUMBER: - FoundMatch = (SearchValue == ChannelData->RemoteNumber); - break; - case CHANNEL_SEARCH_PSM: - FoundMatch = (SearchValue == ChannelData->PSM); - break; - } - - if (FoundMatch) - return ChannelData; - } - - return NULL; -} - -/** Sends a packet to the remote device on the specified channel. - * - * \param[in] Data Pointer to a buffer where the data is to be sourced from - * \param[in] DataLen Length of the data to send - * \param[in] ACLChannel ACL channel information structure containing the destination channel's information, NULL - * to send to the remote device's signaling channel - * - * \return A value from the \ref BT_SendPacket_ErrorCodes_t enum - */ -uint8_t Bluetooth_SendPacket(void* Data, - const uint16_t DataLen, - Bluetooth_Channel_t* const ACLChannel) -{ - BT_ACL_Header_t ACLPacketHeader; - BT_DataPacket_Header_t DataHeader; - - /* A remote device must be connected before a packet transmission is attempted */ - if (!(Bluetooth_Connection.IsConnected)) - return BT_SENDPACKET_NotConnected; - - /* If the destination channel is not the signaling channel and it is not currently fully open, abort */ - if ((ACLChannel != NULL) && (ACLChannel->State != BT_Channel_Open)) - return BT_SENDPACKET_ChannelNotOpen; - - /* Fill out the packet's header from the remote device connection information structure */ - ACLPacketHeader.ConnectionHandle = (Bluetooth_Connection.ConnectionHandle | BT_ACL_FIRST_AUTOFLUSH); - ACLPacketHeader.DataLength = sizeof(DataHeader) + DataLen; - DataHeader.PayloadLength = DataLen; - DataHeader.DestinationChannel = (ACLChannel == NULL) ? BT_CHANNEL_SIGNALING : ACLChannel->RemoteNumber; - - Pipe_SelectPipe(BLUETOOTH_DATA_OUT_PIPE); - - Pipe_WaitUntilReady(); - Pipe_Unfreeze(); - - /* Write the packet contents to the pipe so that it can be sent to the remote device */ - Pipe_Write_Stream_LE(&ACLPacketHeader, sizeof(ACLPacketHeader), NULL); - Pipe_Write_Stream_LE(&DataHeader, sizeof(DataHeader), NULL); - Pipe_Write_Stream_LE(Data, DataLen, NULL); - Pipe_ClearOUT(); - - Pipe_Freeze(); - - BT_ACL_DEBUG(2, ""); - BT_ACL_DEBUG(2, "Packet Sent"); - BT_ACL_DEBUG(2, "-- Connection Handle: 0x%04X", (ACLPacketHeader.ConnectionHandle & 0x0FFF)); - BT_ACL_DEBUG(2, "-- Data Length: 0x%04X", ACLPacketHeader.DataLength); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", DataHeader.DestinationChannel); - BT_ACL_DEBUG(2, "-- Payload Length: 0x%04X", DataHeader.PayloadLength); - - return BT_SENDPACKET_NoError; -} - -/** Opens a Bluetooth channel to the currently connected remote device, so that data can be exchanged. - * - * \note The channel is not immediately opened when this function returns - it must undergo a two way - * connection and configuration process first as the main Bluetooth stack processing task is - * repeatedly called. The returned channel is unusable by the user application until its State - * element has progressed to the Open state. - * - * \param[in] PSM PSM of the service that the channel is to be opened for - * - * \return Pointer to the channel information structure of the opened channel, or NULL if no free channels - */ -Bluetooth_Channel_t* Bluetooth_OpenChannel(const uint16_t PSM) -{ - Bluetooth_Channel_t* ChannelData = NULL; - - /* Search through the channel information list for a free channel item */ - for (uint8_t i = 0; i < BLUETOOTH_MAX_OPEN_CHANNELS; i++) - { - if (Bluetooth_Connection.Channels[i].State == BT_Channel_Closed) - { - ChannelData = &Bluetooth_Connection.Channels[i]; - - /* Set the new channel structure's local channel number to a unique value within the connection orientated - channel address space */ - ChannelData->LocalNumber = (BT_CHANNELNUMBER_BASEOFFSET + i); - break; - } - } - - /* If no free channel item was found in the list, all channels are occupied - abort */ - if (ChannelData == NULL) - return NULL; - - /* Reset and fill out the allocated channel's information structure with defaults */ - ChannelData->RemoteNumber = 0; - ChannelData->PSM = PSM; - ChannelData->LocalMTU = MAXIMUM_CHANNEL_MTU; - ChannelData->State = BT_Channel_WaitConnectRsp; - - struct - { - BT_Signal_Header_t SignalCommandHeader; - BT_Signal_ConnectionReq_t ConnectionRequest; - } PacketData; - - /* Fill out the Signal Command header in the response packet */ - PacketData.SignalCommandHeader.Code = BT_SIGNAL_CONNECTION_REQUEST; - PacketData.SignalCommandHeader.Identifier = ++Bluetooth_Connection.SignalingIdentifier; - PacketData.SignalCommandHeader.Length = sizeof(PacketData.ConnectionRequest); - - /* Fill out the Connection Request in the response packet */ - PacketData.ConnectionRequest.PSM = PSM; - PacketData.ConnectionRequest.SourceChannel = ChannelData->LocalNumber; - - Bluetooth_SendPacket(&PacketData, sizeof(PacketData), NULL); - - BT_ACL_DEBUG(1, ">> L2CAP Connection Request"); - BT_ACL_DEBUG(2, "-- PSM 0x%04X", PacketData.ConnectionRequest.PSM); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", PacketData.ConnectionRequest.SourceChannel); - - return ChannelData; -} - -/** Closes a Bluetooth channel that is open to the currently connected remote device, so that no further data - * can be exchanged. - * - * \note The channel is not immediately closed when this function returns - it must undergo an asynchronous - * disconnection process first as the main Bluetooth stack processing task is repeatedly called. The - * returned channel is unusable by the user application upon return however the channel is not completely - * closed until its State element has progressed to the Closed state. - * - * \param[in,out] ACLChannel ACL channel information structure of the channel to close - */ -void Bluetooth_CloseChannel(Bluetooth_Channel_t* const ACLChannel) -{ - /* Don't try to close a non-existing or already closed channel */ - if ((ACLChannel == NULL) || (ACLChannel->State == BT_Channel_Closed)) - return; - - /* Set the channel's state to the start of the teardown process */ - ACLChannel->State = BT_Channel_WaitDisconnect; - - struct - { - BT_Signal_Header_t SignalCommandHeader; - BT_Signal_DisconnectionReq_t DisconnectionRequest; - } PacketData; - - /* Fill out the Signal Command header in the response packet */ - PacketData.SignalCommandHeader.Code = BT_SIGNAL_DISCONNECTION_REQUEST; - PacketData.SignalCommandHeader.Identifier = ++Bluetooth_Connection.SignalingIdentifier; - PacketData.SignalCommandHeader.Length = sizeof(PacketData.DisconnectionRequest); - - /* Fill out the Disconnection Request in the response packet */ - PacketData.DisconnectionRequest.DestinationChannel = ACLChannel->RemoteNumber; - PacketData.DisconnectionRequest.SourceChannel = ACLChannel->LocalNumber; - - Bluetooth_SendPacket(&PacketData, sizeof(PacketData), NULL); - - BT_ACL_DEBUG(1, ">> L2CAP Disconnection Request"); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", PacketData.DisconnectionRequest.DestinationChannel); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", PacketData.DisconnectionRequest.SourceChannel); -} - -/** Internal Bluetooth stack Signal Command processing routine for a Connection Request command. - * - * \param[in] SignalCommandHeader Pointer to the start of the received packet's Signal Command header - */ -static inline void Bluetooth_Signal_ConnectionReq(const BT_Signal_Header_t* const SignalCommandHeader) -{ - BT_Signal_ConnectionReq_t ConnectionRequest; - - Pipe_Read_Stream_LE(&ConnectionRequest, sizeof(ConnectionRequest), NULL); - - Pipe_ClearIN(); - Pipe_Freeze(); - - BT_ACL_DEBUG(1, "<< L2CAP Connection Request"); - BT_ACL_DEBUG(2, "-- PSM: 0x%04X", ConnectionRequest.PSM); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ConnectionRequest.SourceChannel); - - /* Try to retrieve the existing channel's information structure if it exists */ - Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConnectionRequest.SourceChannel, CHANNEL_SEARCH_REMOTENUMBER); - - /* If an existing channel item with the correct remote channel number was not found, find a free channel entry */ - if (ChannelData == NULL) - { - /* Look through the channel information list for a free entry */ - for (uint8_t i = 0; i < BLUETOOTH_MAX_OPEN_CHANNELS; i++) - { - if (Bluetooth_Connection.Channels[i].State == BT_Channel_Closed) - { - ChannelData = &Bluetooth_Connection.Channels[i]; - - /* Set the new channel structure's local channel number to a unique value within the connection orientated - channel address space */ - ChannelData->LocalNumber = (BT_CHANNELNUMBER_BASEOFFSET + i); - break; - } - } - } - - uint8_t ChannelStatus = BT_CONNECTION_REFUSED_RESOURCES; - - /* Reset the channel item contents only if a channel entry was found for it */ - if (ChannelData != NULL) - { - /* Check if the user application will allow the connection based on its PSM */ - if (Bluetooth_ChannelConnectionRequest(ConnectionRequest.PSM)) - { - ChannelData->RemoteNumber = ConnectionRequest.SourceChannel; - ChannelData->PSM = ConnectionRequest.PSM; - ChannelData->LocalMTU = MAXIMUM_CHANNEL_MTU; - ChannelData->State = BT_Channel_Config_WaitConfig; - - ChannelStatus = BT_CONNECTION_SUCCESSFUL; - } - else - { - ChannelStatus = BT_CONNECTION_REFUSED_PSM; - } - } - - struct - { - BT_Signal_Header_t SignalCommandHeader; - BT_Signal_ConnectionResp_t ConnectionResponse; - } ResponsePacket; - - /* Fill out the Signal Command header in the response packet */ - ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_CONNECTION_RESPONSE; - ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier; - ResponsePacket.SignalCommandHeader.Length = sizeof(ResponsePacket.ConnectionResponse); - - /* Fill out the Connection Response in the response packet */ - ResponsePacket.ConnectionResponse.DestinationChannel = (ChannelData != NULL) ? ChannelData->LocalNumber : 0; - ResponsePacket.ConnectionResponse.SourceChannel = (ChannelData != NULL) ? ChannelData->RemoteNumber : 0; - ResponsePacket.ConnectionResponse.Result = ChannelStatus; - ResponsePacket.ConnectionResponse.Status = 0x00; - - Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), NULL); - - BT_ACL_DEBUG(1, ">> L2CAP Connection Response"); - BT_ACL_DEBUG(2, "-- Result: 0x%02X", ResponsePacket.ConnectionResponse.Result); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", ResponsePacket.ConnectionResponse.DestinationChannel); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ResponsePacket.ConnectionResponse.SourceChannel); -} - -/** Internal Bluetooth stack Signal Command processing routine for a Connection Response command. - * - * \param[in] SignalCommandHeader Pointer to the start of the received packet's Signal Command header - */ -static inline void Bluetooth_Signal_ConnectionResp(const BT_Signal_Header_t* const SignalCommandHeader) -{ - BT_Signal_ConnectionResp_t ConnectionResponse; - - Pipe_Read_Stream_LE(&ConnectionResponse, sizeof(ConnectionResponse), NULL); - - Pipe_ClearIN(); - Pipe_Freeze(); - - BT_ACL_DEBUG(1, "<< L2CAP Connection Response"); - BT_ACL_DEBUG(2, "-- Result: 0x%02X", ConnectionResponse.Result); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ConnectionResponse.SourceChannel); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", ConnectionResponse.DestinationChannel); - - /* Search for the referenced channel in the channel information list */ - Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConnectionResponse.SourceChannel, CHANNEL_SEARCH_LOCALNUMBER); - - /* Only progress if the referenced channel data was found */ - if (ChannelData != NULL) - { - /* Set the channel structure's remote channel number to the channel allocated on the remote device */ - ChannelData->RemoteNumber = ConnectionResponse.SourceChannel; - ChannelData->State = (ConnectionResponse.Result == BT_CONNECTION_SUCCESSFUL) ? - BT_Channel_Config_WaitConfig : BT_Channel_Closed; - } -} - -/** Internal Bluetooth stack Signal Command processing routine for a Configuration Request command. - * - * \param[in] SignalCommandHeader Pointer to the start of the received packet's Signal Command header - */ -static inline void Bluetooth_Signal_ConfigurationReq(const BT_Signal_Header_t* const SignalCommandHeader) -{ - BT_Signal_ConfigurationReq_t ConfigurationRequest; - - /* Allocate a buffer large enough to hold the variable number of configuration options in the request */ - uint8_t OptionsLen = (SignalCommandHeader->Length - sizeof(ConfigurationRequest)); - uint8_t Options[OptionsLen]; - - Pipe_Read_Stream_LE(&ConfigurationRequest, sizeof(ConfigurationRequest), NULL); - Pipe_Read_Stream_LE(&Options, sizeof(Options), NULL); - - Pipe_ClearIN(); - Pipe_Freeze(); - - /* Search for the referenced channel in the channel information list */ - Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConfigurationRequest.DestinationChannel, CHANNEL_SEARCH_LOCALNUMBER); - - BT_ACL_DEBUG(1, "<< L2CAP Configuration Request"); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", ConfigurationRequest.DestinationChannel); - BT_ACL_DEBUG(2, "-- Options Len: 0x%04X", OptionsLen); - - /* Only look at the channel configuration options if a valid channel entry for the local channel number was found */ - if (ChannelData != NULL) - { - /* Iterate through each option in the configuration request to look for ones which can be processed */ - uint8_t OptionPos = 0; - while (OptionPos < OptionsLen) - { - BT_Config_Option_Header_t* OptionHeader = (BT_Config_Option_Header_t*)&Options[OptionPos]; - void* OptionData = &Options[OptionPos + sizeof(BT_Config_Option_Header_t)]; - - BT_ACL_DEBUG(2, "-- Option Type: 0x%04X", OptionHeader->Type); - BT_ACL_DEBUG(2, "-- Option Length: 0x%04X", (sizeof(BT_Config_Option_Header_t) + OptionHeader->Length)); - - /* Store the remote MTU option's value if present */ - if (OptionHeader->Type == BT_CONFIG_OPTION_MTU) - ChannelData->RemoteMTU = *((uint16_t*)OptionData); - - /* Progress to the next option in the packet */ - OptionPos += (sizeof(BT_Config_Option_Header_t) + OptionHeader->Length); - } - } - - struct - { - BT_Signal_Header_t SignalCommandHeader; - BT_Signal_ConfigurationResp_t ConfigurationResponse; - } ResponsePacket; - - /* Fill out the Signal Command header in the response packet */ - ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_CONFIGURATION_RESPONSE; - ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier; - ResponsePacket.SignalCommandHeader.Length = sizeof(ResponsePacket.ConfigurationResponse); - - /* Fill out the Configuration Response in the response packet */ - ResponsePacket.ConfigurationResponse.SourceChannel = (ChannelData != NULL) ? ChannelData->RemoteNumber : 0; - ResponsePacket.ConfigurationResponse.Flags = 0x00; - ResponsePacket.ConfigurationResponse.Result = (ChannelData != NULL) ? BT_CONFIGURATION_SUCCESSFUL : BT_CONFIGURATION_REJECTED; - - Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), NULL); - - if (ChannelData != NULL) - { - switch (ChannelData->State) - { - case BT_Channel_Config_WaitConfig: - ChannelData->State = BT_Channel_Config_WaitSendConfig; - break; - case BT_Channel_Config_WaitReqResp: - ChannelData->State = BT_Channel_Config_WaitResp; - break; - case BT_Channel_Config_WaitReq: - ChannelData->State = BT_Channel_Open; - Bluetooth_ChannelOpened(ChannelData); - break; - } - } - - BT_ACL_DEBUG(1, ">> L2CAP Configuration Response"); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ResponsePacket.ConfigurationResponse.SourceChannel); - BT_ACL_DEBUG(2, "-- Result: 0x%02X", ResponsePacket.ConfigurationResponse.Result); -} - -/** Internal Bluetooth stack Signal Command processing routine for a Configuration Response command. - * - * \param[in] SignalCommandHeader Pointer to the start of the received packet's Signal Command header - */ -static inline void Bluetooth_Signal_ConfigurationResp(const BT_Signal_Header_t* const SignalCommandHeader) -{ - BT_Signal_ConfigurationResp_t ConfigurationResponse; - - Pipe_Read_Stream_LE(&ConfigurationResponse, sizeof(ConfigurationResponse), NULL); - - Pipe_ClearIN(); - Pipe_Freeze(); - - BT_ACL_DEBUG(1, "<< L2CAP Configuration Response"); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ConfigurationResponse.SourceChannel); - BT_ACL_DEBUG(2, "-- Result: 0x%02X", ConfigurationResponse.Result); - - /* Search for the referenced channel in the channel information list */ - Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(ConfigurationResponse.SourceChannel, CHANNEL_SEARCH_REMOTENUMBER); - - /* Only update the channel's state if it was found in the channel list */ - if (ChannelData != NULL) - { - /* Check if the channel configuration completed successfully */ - if (ConfigurationResponse.Result == BT_CONFIGURATION_SUCCESSFUL) - { - switch (ChannelData->State) - { - case BT_Channel_Config_WaitReqResp: - ChannelData->State = BT_Channel_Config_WaitReq; - break; - case BT_Channel_Config_WaitResp: - ChannelData->State = BT_Channel_Open; - Bluetooth_ChannelOpened(ChannelData); - break; - } - } - else - { - /* Configuration failed - close the channel */ - ChannelData->State = BT_Channel_Closed; - } - } -} - -/** Internal Bluetooth stack Signal Command processing routine for a Disconnection Request command. - * - * \param[in] SignalCommandHeader Pointer to the start of the received packet's Signal Command header - */ -static inline void Bluetooth_Signal_DisconnectionReq(const BT_Signal_Header_t* const SignalCommandHeader) -{ - BT_Signal_DisconnectionReq_t DisconnectionRequest; - - Pipe_Read_Stream_LE(&DisconnectionRequest, sizeof(DisconnectionRequest), NULL); - - BT_ACL_DEBUG(1, "<< L2CAP Disconnection Request"); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", DisconnectionRequest.DestinationChannel); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", DisconnectionRequest.SourceChannel); - - Pipe_ClearIN(); - Pipe_Freeze(); - - /* Search for the referenced channel in the channel information list */ - Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(DisconnectionRequest.SourceChannel, CHANNEL_SEARCH_REMOTENUMBER); - - struct - { - BT_Signal_Header_t SignalCommandHeader; - BT_Signal_DisconnectionResp_t DisconnectionResponse; - } ResponsePacket; - - /* Fill out the Signal Command header in the response packet */ - ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_DISCONNECTION_RESPONSE; - ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier; - ResponsePacket.SignalCommandHeader.Length = sizeof(ResponsePacket.DisconnectionResponse); - - /* Fill out the Disconnection Response in the response packet */ - ResponsePacket.DisconnectionResponse.DestinationChannel = (ChannelData != NULL) ? ChannelData->RemoteNumber : 0; - ResponsePacket.DisconnectionResponse.SourceChannel = (ChannelData != NULL) ? ChannelData->LocalNumber : 0; - - Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), NULL); - - /* If the channel was found in the channel list, close it */ - if (ChannelData != NULL) - ChannelData->State = BT_Channel_Closed; - - BT_ACL_DEBUG(1, ">> L2CAP Disconnection Response"); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", ResponsePacket.DisconnectionResponse.SourceChannel); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", ResponsePacket.DisconnectionResponse.DestinationChannel); -} - -/** Internal Bluetooth stack Signal Command processing routine for a Disconnection Response command. - * - * \param[in] SignalCommandHeader Pointer to the start of the received packet's Signal Command header - */ -static inline void Bluetooth_Signal_DisconnectionResp(const BT_Signal_Header_t* const SignalCommandHeader) -{ - BT_Signal_DisconnectionResp_t DisconnectionResponse; - - Pipe_Read_Stream_LE(&DisconnectionResponse, sizeof(DisconnectionResponse), NULL); - - BT_ACL_DEBUG(1, "<< L2CAP Disconnection Response"); - BT_ACL_DEBUG(2, "-- Destination Channel: 0x%04X", DisconnectionResponse.DestinationChannel); - BT_ACL_DEBUG(2, "-- Source Channel: 0x%04X", DisconnectionResponse.SourceChannel); - - Pipe_ClearIN(); - Pipe_Freeze(); - - /* Search for the referenced channel in the channel information list */ - Bluetooth_Channel_t* ChannelData = Bluetooth_GetChannelData(DisconnectionResponse.SourceChannel, CHANNEL_SEARCH_REMOTENUMBER); - - /* If the channel was found in the channel list, close it */ - if (ChannelData != NULL) - ChannelData->State = BT_Channel_Closed; -} - -/** Internal Bluetooth stack Signal Command processing routine for an Echo Request command. - * - * \param[in] SignalCommandHeader Pointer to the start of the received packet's Signal Command header - */ -static inline void Bluetooth_Signal_EchoReq(const BT_Signal_Header_t* const SignalCommandHeader) -{ - BT_ACL_DEBUG(1, "<< L2CAP Echo Request"); - - Pipe_ClearIN(); - Pipe_Freeze(); - - struct - { - BT_Signal_Header_t SignalCommandHeader; - } ResponsePacket; - - /* Fill out the Signal Command header in the response packet */ - ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_ECHO_RESPONSE; - ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier; - ResponsePacket.SignalCommandHeader.Length = 0; - - Bluetooth_SendPacket(&ResponsePacket, sizeof(ResponsePacket), NULL); - - BT_ACL_DEBUG(1, ">> L2CAP Echo Response"); -} - -/** Internal Bluetooth stack Signal Command processing routine for an Information Request command. - * - * \param[in] SignalCommandHeader Pointer to the start of the received packet's Signal Command header - */ -static inline void Bluetooth_Signal_InformationReq(const BT_Signal_Header_t* const SignalCommandHeader) -{ - BT_Signal_InformationReq_t InformationRequest; - - Pipe_Read_Stream_LE(&InformationRequest, sizeof(InformationRequest), NULL); - - BT_ACL_DEBUG(1, "<< L2CAP Information Request"); - BT_ACL_DEBUG(2, "-- Info Type: 0x%04X", InformationRequest.InfoType); - - Pipe_ClearIN(); - Pipe_Freeze(); - - struct - { - BT_Signal_Header_t SignalCommandHeader; - BT_Signal_InformationResp_t InformationResponse; - - uint8_t Data[4]; - } ResponsePacket; - - uint8_t DataLen = 0; - - /* Retrieve the requested information and store it in the outgoing packet, if found */ - switch (InformationRequest.InfoType) - { - case BT_INFOREQ_MTU: - ResponsePacket.InformationResponse.Result = BT_INFORMATION_SUCCESSFUL; - DataLen = 2; - - *((uint16_t*)&ResponsePacket.Data) = MAXIMUM_CHANNEL_MTU; - break; - case BT_INFOREQ_EXTENDEDFEATURES: - ResponsePacket.InformationResponse.Result = BT_INFORMATION_SUCCESSFUL; - DataLen = 4; - - *((uint32_t*)&ResponsePacket.Data) = 0; - break; - default: - ResponsePacket.InformationResponse.Result = BT_INFORMATION_NOTSUPPORTED; - DataLen = 0; - break; - } - - /* Fill out the Signal Command header in the response packet */ - ResponsePacket.SignalCommandHeader.Code = BT_SIGNAL_INFORMATION_RESPONSE; - ResponsePacket.SignalCommandHeader.Identifier = SignalCommandHeader->Identifier; - ResponsePacket.SignalCommandHeader.Length = sizeof(ResponsePacket.InformationResponse) + DataLen; - - /* Fill out the Information Response in the response packet */ - ResponsePacket.InformationResponse.InfoType = InformationRequest.InfoType; - - Bluetooth_SendPacket(&ResponsePacket, (sizeof(ResponsePacket) - sizeof(ResponsePacket.Data) + DataLen), NULL); - - BT_ACL_DEBUG(1, ">> L2CAP Information Response"); - BT_ACL_DEBUG(2, "-- Result: 0x%02X", ResponsePacket.InformationResponse.Result); -} - |