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Code to control a Traxster robot using a Wimote and Android app
Fork of BlueUSB by
Diff: hci.h
- Revision:
- 0:606b230e5b4a
diff -r 000000000000 -r 606b230e5b4a hci.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hci.h Sat Apr 10 00:30:24 2010 +0000 @@ -0,0 +1,224 @@ +/* +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 +{ + 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 + +// 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 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); + +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); + void Control(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 */ + +// 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); + + // 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); + + private: + void InquiryResult(const inquiry_info* info); + void RemoteName(const BD_ADDR* addr, const char* name); + void ConnectComplete(const connection_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