Demos/Host/Incomplete/BluetoothHost/Lib/BluetoothStack.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all 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 /** \file
  32  *
  33  *  Header file for BluetoothStack.c.
  34  */
  35
  36 #ifndef _BLUETOOTH_STACK_
  37 #define _BLUETOOTH_STACK_
  38
  39         /* Includes: */
  40                 #include <LUFA/Drivers/USB/USB.h>
  41
  42                 #include "../ConfigDescriptor.h"
  43
  44         /* Macros: */
  45                 #define BLUETOOTH_MAX_OPEN_CHANNELS    6
  46
  47                 #define CHANNEL_PSM_SDP                0x0001
  48                 #define CHANNEL_PSM_UDP                0x0002
  49                 #define CHANNEL_PSM_RFCOMM             0x0003
  50                 #define CHANNEL_PSM_TCP                0x0004
  51                 #define CHANNEL_PSM_IP                 0x0009
  52                 #define CHANNEL_PSM_FTP                0x000A
  53                 #define CHANNEL_PSM_HTTP               0x000C
  54                 #define CHANNEL_PSM_UPNP               0x0010
  55                 #define CHANNEL_PSM_HIDP               0x0011
  56
  57                 #define CHANNEL_SEARCH_LOCALNUMBER     0
  58                 #define CHANNEL_SEARCH_REMOTENUMBER    1
  59                 #define CHANNEL_SEARCH_PSM             2
  60
  61                 #define MAXIMUM_CHANNEL_MTU            255
  62
  63         /* Enums: */
  64                 /** Enum for the possible states for a Bluetooth ACL channel. */
  65                 enum BT_ChannelStates_t
  66                 {
  67                         BT_Channel_Closed                = 0, /**< Channel is closed and inactive. No data may be sent or received. */
  68                         BT_Channel_WaitConnect           = 1, /**< A connection request has been received, but a response has not been sent. */
  69                         BT_Channel_WaitConnectRsp        = 2, /**< A connection request has been sent, but a response has not been received. */
  70                         BT_Channel_Config_WaitConfig     = 3, /**< Channel has been connected, but not yet configured on either end. */
  71                         BT_Channel_Config_WaitSendConfig = 4, /**< Channel configuration has been received and accepted, but not yet sent. */
  72                         BT_Channel_Config_WaitReqResp    = 5, /**< Channel configuration has been sent but not responded to, and a configuration
  73                                                                *   request from the remote end has not yet been received.
  74                                                                */
  75                         BT_Channel_Config_WaitResp       = 6, /**< Channel configuration has been sent but not accepted, but a configuration request
  76                                                                *   from the remote end has been accepted.
  77                                                                */
  78                         BT_Channel_Config_WaitReq        = 7, /**< Channel configuration has been sent and accepted, but a configuration request
  79                                                                *   from the remote end has not yet been accepted.
  80                                                                */
  81                         BT_Channel_Open                  = 8, /**< Channel is open and ready to send or receive data */
  82                         BT_Channel_WaitDisconnect        = 9, /**< A disconnection request has been sent, but not yet acknowledged. */
  83                 };
  84
  85                 /** Enum for the possible error codes returned by the \ref Bluetooth_SendPacket() function. */
  86                 enum BT_SendPacket_ErrorCodes_t
  87                 {
  88                         BT_SENDPACKET_NoError            = 0, /**< The packet was sent successfully. */
  89                         BT_SENDPACKET_NotConnected       = 1, /**< The Bluetooth stack is not currently connected to a remote device. */
  90                         BT_SENDPACKET_ChannelNotOpen     = 2, /**< The given channel is not currently in the Open state. */
  91                 };
  92
  93         /* Type Defines: */
  94                 /** Type define for a Bluetooth ACL channel information structure. This structure contains all the relevant
  95                  *  information on an ACL channel for data transmission and reception by the stack.
  96                  */
  97                 typedef struct
  98                 {
  99                         uint8_t  State; /**< Current channel state, a value from the \ref BT_ChannelStates_t enum. */
 100                         uint16_t LocalNumber; /**< Local channel number on the device. */
 101                         uint16_t RemoteNumber; /**< Remote channel number on the connected device. */
 102                         uint16_t PSM; /**< Protocol used on the channel. */
 103                         uint16_t LocalMTU; /**< MTU of data sent from the connected device to the local device. */
 104                         uint16_t RemoteMTU; /**< MTU of data sent from the local device to the connected device. */
 105                 } Bluetooth_Channel_t;
 106
 107                 /** Type define for a Bluetooth device connection information structure. This structure contains all the
 108                  *  information needed to maintain a connection to a remote Bluetooth device via the Bluetooth stack.
 109                  */
 110                 typedef struct
 111                 {
 112                         bool                IsConnected; /**< Indicates if the stack is currently connected to a remote device - if this value is
 113                                                           *   false, the remaining elements are invalid.
 114                                                                                           */
 115                         uint16_t            ConnectionHandle; /**< Connection handle to the remote device, used internally in the stack. */
 116                         uint8_t             RemoteAddress[6]; /**< Bluetooth device address of the attached remote device. */
 117                         Bluetooth_Channel_t Channels[BLUETOOTH_MAX_OPEN_CHANNELS]; /**< Channel information structures for the connection. */
 118                         uint8_t             SignalingIdentifier; /**< Next Signaling Channel unique command sequence identifier. */
 119                 } Bluetooth_Connection_t;
 120
 121                 /** Local Bluetooth device information structure, for the defining of local device characteristics for the Bluetooth stack. */
 122                 typedef struct
 123                 {
 124                         uint32_t Class; /**< Class of the local device, a mask of \c DEVICE_CLASS_* masks. */
 125                         char     PINCode[16]; /**< Pin code required to send or receive in order to authenticate with a remote device. */
 126                         char     Name[]; /**< Name of the local Bluetooth device, up to 248 characters. */
 127                 } Bluetooth_Device_t;
 128
 129                 /** Bluetooth stack state information structure, for the containment of the Bluetooth stack state. The values in
 130                  *  this structure are set by the Bluetooth stack internally, and should all be treated as read only by the user
 131                  *  application.
 132                  */
 133                 typedef struct
 134                 {
 135                         uint8_t CurrentHCIState; /**< Current HCI state machine state. */
 136                         uint8_t NextHCIState; /**< Next HCI state machine state to progress to once the currently issued command completes. */
 137                         bool    IsInitialized; /**< Indicates if the Bluetooth stack is currently initialized and ready for connections
 138                                                 *   to or from a remote Bluetooth device.
 139                                                 */
 140                         uint8_t LocalBDADDR[6]; /**< Local Bluetooth adapter's BDADDR, valid when the stack is fully initialized. */
 141                 } Bluetooth_Stack_State_t;
 142
 143         /* Includes: */
 144                 #include "BluetoothHCICommands.h"
 145                 #include "BluetoothACLPackets.h"
 146
 147         /* Function Prototypes: */
 148                 void Bluetooth_Stack_Init(void);
 149                 void Bluetooth_Stack_USBTask(void);
 150
 151                 void                 Bluetooth_StackInitialized(void);
 152                 bool                 Bluetooth_ConnectionRequest(const uint8_t* RemoteAddress);
 153                 void                 Bluetooth_ConnectionComplete(void);
 154                 void                 Bluetooth_DisconnectionComplete(void);
 155                 bool                 Bluetooth_ChannelConnectionRequest(const uint16_t PSM);
 156                 void                 Bluetooth_PacketReceived(void* Data, uint16_t DataLen,
 157                                                               Bluetooth_Channel_t* const ACLChannel);
 158                 void                 Bluetooth_ChannelOpened(Bluetooth_Channel_t* const ACLChannel);
 159
 160                 Bluetooth_Channel_t* Bluetooth_GetChannelData(const uint16_t SearchValue,
 161                                                               const uint8_t SearchKey);
 162                 Bluetooth_Channel_t* Bluetooth_OpenChannel(const uint16_t PSM);
 163                 void                 Bluetooth_CloseChannel(Bluetooth_Channel_t* const ACLChannel);
 164                 uint8_t              Bluetooth_SendPacket(void* Data,
 165                                                           uint16_t DataLen,
 166                                                           Bluetooth_Channel_t* const ACLChannel);
 167
 168         /* External Variables: */
 169                 extern Bluetooth_Device_t      Bluetooth_DeviceConfiguration;
 170                 extern Bluetooth_Connection_t  Bluetooth_Connection;
 171                 extern Bluetooth_Stack_State_t Bluetooth_State;
 172
 173 #endif
 174