Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothACLPackets.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 #define  INCLUDE_FROM_BLUETOOTH_ACLPACKETS_C
  32 #include "BluetoothACLPackets.h"
  33
  34 void Bluetooth_ProcessACLPackets(void)
  35 {
  36         Bluetooth_ACL_Header_t ACLPacketHeader;
  37         Bluetooth_DataPacket_Header_t DataHeader;
  38
  39         Pipe_SelectPipe(BLUETOOTH_DATA_IN_PIPE);
  40         Pipe_SetToken(PIPE_TOKEN_IN);
  41         Pipe_Unfreeze();
  42
  43         if (!(Pipe_IsReadWriteAllowed()))
  44         {
  45                 Pipe_Freeze();
  46                 return;
  47         }
  48
  49         Pipe_Read_Stream_LE(&ACLPacketHeader, sizeof(ACLPacketHeader));
  50         Pipe_Read_Stream_LE(&DataHeader, sizeof(DataHeader));
  51
  52         BT_DEBUG("(ACL) Packet Received", NULL);
  53         BT_DEBUG("(ACL) -- Connection Handle: 0x%04X", ACLPacketHeader.ConnectionHandle);
  54         BT_DEBUG("(ACL) -- Data Length: 0x%04X", ACLPacketHeader.DataLength);
  55         BT_DEBUG("(ACL) -- Destination Channel: 0x%04X", DataHeader.DestinationChannel);
  56         BT_DEBUG("(ACL) -- Payload Length: 0x%04X", DataHeader.PayloadLength);
  57
  58         if (DataHeader.DestinationChannel == BLUETOOTH_CHANNEL_SIGNALING)
  59         {
  60                 Bluetooth_SignalCommand_Header_t SignalCommandHeader;
  61                 Pipe_Read_Stream_LE(&SignalCommandHeader, sizeof(SignalCommandHeader));
  62
  63                 switch (SignalCommandHeader.Code)
  64                 {
  65                         case BLUETOOTH_SIGNAL_CONNECTION_REQUEST:
  66                                 Bluetooth_ProcessSignalPacket_ConnectionRequest(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
  67                                 break;
  68                         case BLUETOOTH_SIGNAL_CONFIGURATION_REQUEST:
  69                                 Bluetooth_ProcessSignalPacket_ConfigurationRequest(&ACLPacketHeader, &DataHeader, &SignalCommandHeader);
  70                                 break;
  71                         case BLUETOOTH_SIGNAL_INFORMATION_REQUEST:
  72                                 BT_DEBUG("(ACL) -- Information Request, Discarded", NULL);
  73
  74                                 Pipe_Discard_Stream(ACLPacketHeader.DataLength);
  75                                 Pipe_ClearIN();
  76                                 Pipe_Freeze();
  77                                 break;
  78                         default:
  79                                 BT_DEBUG("(ACL) >> Unknown Signaling Command 0x%02X", SignalCommandHeader.Code);
  80
  81                                 Pipe_Discard_Stream(ACLPacketHeader.DataLength);
  82                                 Pipe_ClearIN();
  83                                 Pipe_Freeze();
  84                                 break;
  85                 }
  86         }
  87         else
  88         {
  89                 uint8_t DataPayload[DataHeader.PayloadLength];
  90                 Pipe_Read_Stream_LE(&DataPayload, sizeof(DataPayload));
  91                 DataHeader.PayloadLength = 0;
  92
  93                 BT_DEBUG("(ACL) -- Data Payload: ", NULL);
  94                 for (uint16_t B = 0; B < sizeof(DataPayload); B++)
  95                   printf("0x%02X ", DataPayload[B]);
  96                 BT_DEBUG("", NULL);
  97
  98                 Pipe_Discard_Stream(ACLPacketHeader.DataLength);
  99                 Pipe_ClearIN();
 100                 Pipe_Freeze();
 101         }
 102 }
 103
 104 static inline void Bluetooth_ProcessSignalPacket_ConnectionRequest(Bluetooth_ACL_Header_t* ACLPacketHeader,
 105                                                                    Bluetooth_DataPacket_Header_t* DataHeader,
 106                                                                    Bluetooth_SignalCommand_Header_t* SignalCommandHeader)
 107 {
 108         Bluetooth_SignalCommand_ConnectionRequest_t ConnectionRequest;
 109
 110         Pipe_Read_Stream_LE(&ConnectionRequest, sizeof(ConnectionRequest));
 111
 112         BT_DEBUG("(ACL) >> L2CAP Connection Request", NULL);
 113         BT_DEBUG("(ACL) -- PSM: 0x%04X", ConnectionRequest.PSM);
 114         BT_DEBUG("(ACL) -- Source Channel: 0x%04X", ConnectionRequest.SourceChannel);
 115
 116         Pipe_ClearIN();
 117         Pipe_Freeze();
 118         Pipe_SelectPipe(BLUETOOTH_DATA_OUT_PIPE);
 119         Pipe_SetToken(PIPE_TOKEN_OUT);
 120         Pipe_Unfreeze();
 121
 122         Bluetooth_SignalCommand_ConnectionResponse_t ConnectionResponse;
 123
 124         ACLPacketHeader->DataLength           = sizeof(*DataHeader) + sizeof(*SignalCommandHeader) + sizeof(ConnectionResponse);
 125         DataHeader->PayloadLength             = sizeof(*SignalCommandHeader) + sizeof(ConnectionResponse);
 126         DataHeader->DestinationChannel        = BLUETOOTH_CHANNEL_SIGNALING;
 127         SignalCommandHeader->Code             = BLUETOOTH_SIGNAL_CONNECTION_RESPONSE;
 128         SignalCommandHeader->Length           = sizeof(ConnectionResponse);
 129
 130         Bluetooth_Channel_t* ChannelData      = Bluetooth_InitChannelData(ConnectionRequest.SourceChannel, ConnectionRequest.PSM);
 131
 132         ConnectionResponse.Result             = (ChannelData == NULL) ? BLUETOOTH_CONNECTION_REFUSED_RESOURCES :
 133                                                                                                                                     BLUETOOTH_CONNECTION_SUCCESSFUL;
 134         ConnectionResponse.DestinationChannel = ChannelData->LocalNumber;
 135         ConnectionResponse.SourceChannel      = ChannelData->RemoteNumber;
 136         ConnectionResponse.Status             = 0x00;
 137
 138         Pipe_Write_Stream_LE(ACLPacketHeader, sizeof(*ACLPacketHeader));
 139         Pipe_Write_Stream_LE(DataHeader, sizeof(*DataHeader));
 140         Pipe_Write_Stream_LE(SignalCommandHeader, sizeof(*SignalCommandHeader));
 141         Pipe_Write_Stream_LE(&ConnectionResponse, sizeof(ConnectionResponse));
 142
 143         Pipe_ClearOUT();
 144         Pipe_Freeze();
 145
 146         BT_DEBUG("(ACL) Packet Sent", NULL);
 147         BT_DEBUG("(ACL) -- Connection Handle: 0x%04X", ACLPacketHeader->ConnectionHandle);
 148         BT_DEBUG("(ACL) -- Data Length: 0x%04X", ACLPacketHeader->DataLength);
 149         BT_DEBUG("(ACL) -- Destination Channel: 0x%04X", DataHeader->DestinationChannel);
 150         BT_DEBUG("(ACL) -- Payload Length: 0x%04X", DataHeader->PayloadLength);
 151         BT_DEBUG("(ACL) >> L2CAP Connection Response", NULL);
 152         BT_DEBUG("(ACL) -- Source Channel: 0x%04X", ConnectionResponse.SourceChannel);
 153         BT_DEBUG("(ACL) -- Destination Channel: 0x%04X", ConnectionResponse.DestinationChannel);
 154 }
 155
 156 static inline void Bluetooth_ProcessSignalPacket_ConfigurationRequest(Bluetooth_ACL_Header_t* ACLPacketHeader,
 157                                                                       Bluetooth_DataPacket_Header_t* DataHeader,
 158                                                                       Bluetooth_SignalCommand_Header_t* SignalCommandHeader)
 159 {
 160         Bluetooth_SignalCommand_ConfigurationRequest_t ConfigurationRequest;
 161
 162         Pipe_Read_Stream_LE(&ConfigurationRequest, sizeof(ConfigurationRequest));
 163
 164         BT_DEBUG("(ACL) >> L2CAP Configuration Request", NULL);
 165         BT_DEBUG("(ACL) -- Destination Channel: 0x%04X", ConfigurationRequest.DestinationChannel);
 166
 167         Pipe_ClearIN();
 168         Pipe_Freeze();
 169         Pipe_SelectPipe(BLUETOOTH_DATA_OUT_PIPE);
 170         Pipe_SetToken(PIPE_TOKEN_OUT);
 171         Pipe_Unfreeze();
 172
 173         Bluetooth_SignalCommand_ConfigurationResponse_t ConfigurationResponse;
 174
 175         ACLPacketHeader->DataLength           = sizeof(*DataHeader) + sizeof(*SignalCommandHeader) + sizeof(ConfigurationResponse);
 176         DataHeader->PayloadLength             = sizeof(*SignalCommandHeader) + sizeof(ConfigurationResponse);
 177         DataHeader->DestinationChannel        = BLUETOOTH_CHANNEL_SIGNALING;
 178         SignalCommandHeader->Code             = BLUETOOTH_SIGNAL_CONFIGURATION_RESPONSE;
 179         SignalCommandHeader->Length           = sizeof(ConfigurationResponse);
 180
 181         Bluetooth_Channel_t* ChannelData      = Bluetooth_GetChannelData(ConfigurationRequest.DestinationChannel, CHANNEL_LOOKUP_BY_DESTINATION);
 182
 183         if (ChannelData != NULL)
 184           ChannelData->State = Channel_Open;
 185
 186          // TODO: Add channel config data to the tail of ConfigurationResponse
 187
 188         ConfigurationResponse.SourceChannel   = ChannelData->RemoteNumber;
 189         ConfigurationResponse.Flags           = 0x00;
 190         ConfigurationResponse.Result          = (ChannelData != NULL) ? BLUETOOTH_CONFIGURATION_SUCCESSFUL : BLUETOOTH_CONFIGURATION_REJECTED;
 191
 192         Pipe_Write_Stream_LE(ACLPacketHeader, sizeof(*ACLPacketHeader));
 193         Pipe_Write_Stream_LE(DataHeader, sizeof(*DataHeader));
 194         Pipe_Write_Stream_LE(SignalCommandHeader, sizeof(*SignalCommandHeader));
 195         Pipe_Write_Stream_LE(&ConfigurationResponse, sizeof(ConfigurationResponse));
 196
 197         Pipe_ClearOUT();
 198         Pipe_Freeze();
 199
 200         BT_DEBUG("(ACL) Packet Sent", NULL);
 201         BT_DEBUG("(ACL) -- Connection Handle: 0x%04X", ACLPacketHeader->ConnectionHandle);
 202         BT_DEBUG("(ACL) -- Data Length: 0x%04X", ACLPacketHeader->DataLength);
 203         BT_DEBUG("(ACL) -- Destination Channel: 0x%04X", DataHeader->DestinationChannel);
 204         BT_DEBUG("(ACL) -- Payload Length: 0x%04X", DataHeader->PayloadLength);
 205         BT_DEBUG("(ACL) >> L2CAP Configuration Response", NULL);
 206 }