Diff: hci.h

Revision:

0:7b556109fd46

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hci.h	Fri Dec 23 04:33:33 2011 +0000
@@ -0,0 +1,258 @@
+/*
+Copyright (c) 2010 Peter Barrett
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef HCI_H_INCLUDED
+#define HCI_H_INCLUDED
+
+#include "Socket.h"
+
+#pragma pack(1)
+
+#define ERR_HCI_DEVICE_NOT_FOUND -300
+
+class HCI;
+class HCITransport;
+class BTDevice;
+
+typedef struct
+{
+    u8  addr[6];
+} BD_ADDR;
+
+typedef struct
+{
+    BD_ADDR bdaddr;
+    u8  pscan_rep_mode;
+    u8  pscan_period_mode;
+    u8  pscan_mode;
+    u8  dev_class[3];
+    u16 clock_offset;
+} inquiry_info;
+
+typedef struct
+{
+    BD_ADDR bdaddr;
+    u8  dev_class[3];
+    u8  link_type;   
+} request_info;
+
+typedef struct
+{
+    u8  status;
+    u16 handle;
+    BD_ADDR bdaddr;
+    u8  link_type;
+    u8  encr_mode;
+} connection_info;
+
+//  Address struct for creating L2CAP sockets
+typedef struct {
+    SocketAddrHdr hdr;
+    BD_ADDR bdaddr;
+    u16 psm;
+} L2CAPAddr;
+
+#pragma pack(4)
+
+class BTDevice;
+typedef struct
+{
+    public:
+    SocketInternal si;
+    BTDevice* btdevice;
+    u16 scid;
+    u16 dcid;
+} L2CAPSocket;
+
+#define MAX_HCL_NAME_LENGTH 20  // TODO - BTDevice wants to be a multiple of 4
+#define MAX_PORTS 3
+
+//  BTDevice encapsulates individual device state
+//  It provides L2CAP layer sockets
+
+class BTDevice : public SocketHandler
+{
+    public:
+    HCITransport* _transport;
+    inquiry_info  _info;
+    u16 _handle;     // acl connection handle
+    u8  _state;      // connection state
+    u8  _txid;
+    char   _name[MAX_HCL_NAME_LENGTH];
+
+    void Init();
+
+    BD_ADDR* GetAddress() { return &_info.bdaddr; }
+
+    //  Called from HCI
+    void ACLRecv(const BD_ADDR* addr, const u8* data, int len);
+
+    // SocketHandler
+    virtual int Open(SocketInternal* sock, SocketAddrHdr* addr);
+    virtual int Send(SocketInternal* sock, const u8* data, int len);
+    virtual int Close(SocketInternal* sock);
+    // added by Bart Janssens
+    virtual int Create(SocketInternal* sock, SocketAddrHdr* addr);
+    virtual int Accept(SocketInternal* sock, SocketAddrHdr* addr);
+
+private:
+    L2CAPSocket* SCIDToSocket(int scid);
+    int Send(const u8* data, int len);
+    int Send(u8 c, u8 id, u16* params, int count);
+    int Connect(int scid, int psm);
+    int Disconnect(int scid, int dcid);
+    int ConfigureRequest(int dcid);
+    int ConfigureResponse(u8 rxid, int dcid);
+    int DisconnectResponse(u8 rxid, int scid, int dcid);
+    // added by Bart Janssens
+    int AcceptResponse(u8 rxid, int scid, int dcid);
+    int RefuseResponse(u8 rxid);
+    //
+    void Control(const BD_ADDR* addr, const u8* data, int len);
+};
+
+enum HCI_CALLBACK_EVENT
+{
+    CALLBACK_NONE,
+    CALLBACK_READY,
+    CALLBACK_INQUIRY_RESULT,
+    CALLBACK_INQUIRY_DONE,
+    CALLBACK_REMOTE_NAME,
+    CALLBACK_CONNECTION_COMPLETE,
+    CALLBACK_CONNECTION_FAILED
+};
+
+//  L2CAP Protocol/Service Multiplexor (PSM) values
+
+#define L2CAP_PSM_ANY                   0x0000  /* Any/Invalid PSM */
+#define L2CAP_PSM_SDP                   0x0001  /* Service Discovery Protocol */
+#define L2CAP_PSM_RFCOMM                0x0003  /* RFCOMM protocol */
+#define L2CAP_PSM_TCP                   0x0005  /* Telephony Control Protocol */
+#define L2CAP_PSM_TCS                   0x0007  /* TCS cordless */
+#define L2CAP_PSM_BNEP                  0x000f  /* Bluetooth Network Encapsulation Protocol*/
+#define L2CAP_PSM_HID_CNTL              0x0011  /* HID Control */
+#define L2CAP_PSM_HID_INTR              0x0013  /* HID Interrupt */
+#define L2CAP_PSM_ESDP                  0x0015  /* Extended Service Discovery Profile */
+#define L2CAP_PSM_AVCTP                 0x0017  /* Audio/Visual Control Transport Protocol */
+#define L2CAP_PSM_AVDTP                 0x0019  /* Audio/Visual Distribution */
+
+/* Connection response results */
+#define L2CAP_CONN_SUCCESS 0x0000
+#define L2CAP_CONN_PND 0x0001
+#define L2CAP_CONN_REF_PSM 0x0002
+#define L2CAP_CONN_REF_SEC 0x0003
+#define L2CAP_CONN_REF_RES 0x0004
+#define L2CAP_CONN_CFG_TO 0x0005 /* Implementation specific result */
+
+
+
+//  Callback from inquiry
+typedef int (*HCICallback)(HCI* hci, HCI_CALLBACK_EVENT evt, const u8* data, int len);
+
+#define MAX_BTDEVICES 8
+
+class HCITransport;
+class HCI : public SocketHandler
+{
+    HCITransport* _transport;
+    HCICallback _callback;
+    BD_ADDR  _localAddr;
+
+    BTDevice _devices[MAX_BTDEVICES];
+    int _deviceCount;
+
+    int _acl_mtu;
+    int _acl_max_pkt;
+    int _sco_mtu;
+    int _sco_max_pkt;
+
+    int _state;
+
+    public:
+
+    //  Open a local adapter
+    int Open(HCITransport* transport, HCICallback callback);
+
+    //  Return list of discovered addreses
+    int GetDevices(BTDevice** devices, int maxDevices);
+
+    //  Lookup a device by address or handle
+    BTDevice* Find(const BD_ADDR* addr);
+    BTDevice* Find(int handle);
+
+    //  Disconnect from a remote device
+    int Disconnect(const BD_ADDR* addr);
+    int DisconnectAll();
+
+    //  see what devies are in the system
+    int Inquiry(int duration = 10);
+    
+    // added by Bart Janssens
+    int WriteScanEnable();
+    
+    int AcceptConnection(const BD_ADDR* addr);
+
+    //  get a name, delivered in callback
+    int RemoteNameRequest(const BD_ADDR* addr);
+
+    //  Connect to a remote device
+    int CreateConnection(const BD_ADDR* remoteAddr);
+
+    bool Busy();
+
+    //  called from transport
+    void HCIRecv(const u8* data, int len);
+
+    //  called from transport
+    void ACLRecv(const u8* data, int len);
+
+    //  SocketHandler methods for maintaining L2CAP sockets
+    virtual int Open(SocketInternal* sock, SocketAddrHdr* addr);
+    virtual int Send(SocketInternal* sock, const u8* data, int len);
+    virtual int Close(SocketInternal* sock);
+    // added by Bart Janssens
+    virtual int Create(SocketInternal* sock, SocketAddrHdr* addr);
+    virtual int Accept(SocketInternal* sock, SocketAddrHdr* addr);
+
+    private:
+    void    InquiryResult(const inquiry_info* info);
+    void    RemoteName(const BD_ADDR* addr, const char* name);
+    void    ConnectComplete(const connection_info* info);
+    void    ConnectRequest(const request_info* info);
+    void    DisconnectComplete(int handle);
+    int     SendCmd(int cmd, const u8* params = 0, int len = 0);
+    void    OnCommandComplete(int cmd, const u8* data, int len);
+    void    Callback(HCI_CALLBACK_EVENT c, const u8* data, int len);
+    int     PinCodeReply(const u8* data);
+};
+
+class HCITransport
+{
+protected:
+    HCI* _target;
+public:
+    void Set(HCI* target) { _target = target; };
+    virtual void HCISend(const u8* data, int len) = 0;
+    virtual void ACLSend(const u8* data, int len) = 0;
+};
+
+#endif