/* Copyright (C) 2014 Kristian Lauszus, TKJ Electronics. All rights reserved. This software may be distributed and modified under the terms of the GNU General Public License version 2 (GPL2) as published by the Free Software Foundation and appearing in the file GPL2.TXT included in the packaging of this file. Please note that GPL2 Section 2[b] requires that all works based on this software must also be made publicly available under the terms of the GPL2 ("Copyleft"). Contact information ------------------- Kristian Lauszus, TKJ Electronics Web : http://www.tkjelectronics.com e-mail : kristianl@tkjelectronics.com */ #ifndef _sppbase_h_ #define _sppbase_h_ #include "BTD.h" /* Used for SDP */ #define SDP_SERVICE_SEARCH_ATTRIBUTE_REQUEST_PDU 0x06 // See the RFCOMM specs #define SDP_SERVICE_SEARCH_ATTRIBUTE_RESPONSE_PDU 0x07 // See the RFCOMM specs #define SDP_SERVICE_SEARCH_REQUEST_PDU 0x02 #define SDP_SERVICE_SEARCH_RESPONSE_PDU 0x03 #define SERIALPORT_UUID 0x1101 // See http://www.bluetooth.org/Technical/AssignedNumbers/service_discovery.htm #define L2CAP_UUID 0x0100 /* Used for RFCOMM */ #define RFCOMM_SABM 0x2F #define RFCOMM_UA 0x63 #define RFCOMM_UIH 0xEF #define RFCOMM_DM 0x0F #define RFCOMM_DISC 0x43 #define extendAddress 0x01 // Always 1 // Multiplexer message types #define BT_RFCOMM_PN_CMD 0x83 #define BT_RFCOMM_PN_RSP 0x81 #define BT_RFCOMM_MSC_CMD 0xE3 #define BT_RFCOMM_MSC_RSP 0xE1 #define BT_RFCOMM_RPN_CMD 0x93 #define BT_RFCOMM_RPN_RSP 0x91 /* #define BT_RFCOMM_TEST_CMD 0x23 #define BT_RFCOMM_TEST_RSP 0x21 #define BT_RFCOMM_FCON_CMD 0xA3 #define BT_RFCOMM_FCON_RSP 0xA1 #define BT_RFCOMM_FCOFF_CMD 0x63 #define BT_RFCOMM_FCOFF_RSP 0x61 #define BT_RFCOMM_RLS_CMD 0x53 #define BT_RFCOMM_RLS_RSP 0x51 #define BT_RFCOMM_NSC_RSP 0x11 */ /* * CRC (reversed crc) lookup table as calculated by the table generator in ETSI TS 101 369 V6.3.0. */ const uint8_t rfcomm_crc_table[256] PROGMEM = {/* reversed, 8-bit, poly=0x07 */ 0x00, 0x91, 0xE3, 0x72, 0x07, 0x96, 0xE4, 0x75, 0x0E, 0x9F, 0xED, 0x7C, 0x09, 0x98, 0xEA, 0x7B, 0x1C, 0x8D, 0xFF, 0x6E, 0x1B, 0x8A, 0xF8, 0x69, 0x12, 0x83, 0xF1, 0x60, 0x15, 0x84, 0xF6, 0x67, 0x38, 0xA9, 0xDB, 0x4A, 0x3F, 0xAE, 0xDC, 0x4D, 0x36, 0xA7, 0xD5, 0x44, 0x31, 0xA0, 0xD2, 0x43, 0x24, 0xB5, 0xC7, 0x56, 0x23, 0xB2, 0xC0, 0x51, 0x2A, 0xBB, 0xC9, 0x58, 0x2D, 0xBC, 0xCE, 0x5F, 0x70, 0xE1, 0x93, 0x02, 0x77, 0xE6, 0x94, 0x05, 0x7E, 0xEF, 0x9D, 0x0C, 0x79, 0xE8, 0x9A, 0x0B, 0x6C, 0xFD, 0x8F, 0x1E, 0x6B, 0xFA, 0x88, 0x19, 0x62, 0xF3, 0x81, 0x10, 0x65, 0xF4, 0x86, 0x17, 0x48, 0xD9, 0xAB, 0x3A, 0x4F, 0xDE, 0xAC, 0x3D, 0x46, 0xD7, 0xA5, 0x34, 0x41, 0xD0, 0xA2, 0x33, 0x54, 0xC5, 0xB7, 0x26, 0x53, 0xC2, 0xB0, 0x21, 0x5A, 0xCB, 0xB9, 0x28, 0x5D, 0xCC, 0xBE, 0x2F, 0xE0, 0x71, 0x03, 0x92, 0xE7, 0x76, 0x04, 0x95, 0xEE, 0x7F, 0x0D, 0x9C, 0xE9, 0x78, 0x0A, 0x9B, 0xFC, 0x6D, 0x1F, 0x8E, 0xFB, 0x6A, 0x18, 0x89, 0xF2, 0x63, 0x11, 0x80, 0xF5, 0x64, 0x16, 0x87, 0xD8, 0x49, 0x3B, 0xAA, 0xDF, 0x4E, 0x3C, 0xAD, 0xD6, 0x47, 0x35, 0xA4, 0xD1, 0x40, 0x32, 0xA3, 0xC4, 0x55, 0x27, 0xB6, 0xC3, 0x52, 0x20, 0xB1, 0xCA, 0x5B, 0x29, 0xB8, 0xCD, 0x5C, 0x2E, 0xBF, 0x90, 0x01, 0x73, 0xE2, 0x97, 0x06, 0x74, 0xE5, 0x9E, 0x0F, 0x7D, 0xEC, 0x99, 0x08, 0x7A, 0xEB, 0x8C, 0x1D, 0x6F, 0xFE, 0x8B, 0x1A, 0x68, 0xF9, 0x82, 0x13, 0x61, 0xF0, 0x85, 0x14, 0x66, 0xF7, 0xA8, 0x39, 0x4B, 0xDA, 0xAF, 0x3E, 0x4C, 0xDD, 0xA6, 0x37, 0x45, 0xD4, 0xA1, 0x30, 0x42, 0xD3, 0xB4, 0x25, 0x57, 0xC6, 0xB3, 0x22, 0x50, 0xC1, 0xBA, 0x2B, 0x59, 0xC8, 0xBD, 0x2C, 0x5E, 0xCF }; /** * This BluetoothService class implements the Serial Port Protocol (SPP). * It inherits the Arduino Stream class. This allows it to use all the standard Arduino print and stream functions. */ class SPPBase : public BluetoothService, public Stream { public: /** * Constructor for the SPPBase class. * @param p Pointer to BTD class instance. */ SPPBase(BTD *p); /** * Used to provide Boolean tests for the class. * @return Return true if SPP communication is connected. */ operator bool() { return connected; }; /** Variable used to indicate if the connection is established. */ bool connected; /** @name Serial port profile (SPP) Print functions */ /** * Get number of bytes waiting to be read. * @return Return the number of bytes ready to be read. */ virtual int available(void); /** Send out all bytes in the buffer. */ virtual void flush(void); /** * Used to read the next value in the buffer without advancing to the next one. * @return Return the byte. Will return -1 if no bytes are available. */ virtual int peek(void); /** * Used to read the buffer. * @return Return the byte. Will return -1 if no bytes are available. */ virtual int read(void); #if defined(ARDUINO) && ARDUINO >=100 /** * Writes the byte to send to a buffer. The message is send when either send() or after Usb.Task() is called. * @param data The byte to write. * @return Return the number of bytes written. */ virtual size_t write(uint8_t data); /** * Writes the bytes to send to a buffer. The message is send when either send() or after Usb.Task() is called. * @param data The data array to send. * @param size Size of the data. * @return Return the number of bytes written. */ virtual size_t write(const uint8_t* data, size_t size); /** Pull in write(const char *str) from Print */ using Print::write; #else /** * Writes the byte to send to a buffer. The message is send when either send() or after Usb.Task() is called. * @param data The byte to write. */ virtual void write(uint8_t data); /** * Writes the bytes to send to a buffer. The message is send when either send() or after Usb.Task() is called. * @param data The data array to send. * @param size Size of the data. */ virtual void write(const uint8_t* data, size_t size); #endif /** Discard all the bytes in the buffer. */ void discard(void); /** * This will send all the bytes in the buffer. * This is called whenever Usb.Task() is called, * but can also be called via this function. */ void send(void); /**@}*/ protected: /** @name BluetoothService implementation */ /** * Used to pass acldata to the services. * @param ACLData Incoming acldata. */ virtual void ACLData(uint8_t *ACLData) = 0; /** Used to establish the connection automatically. */ virtual void Run() = 0; /** Use this to reset the service. */ virtual void Reset() = 0; /** Used this to disconnect the virtual serial port. */ virtual void disconnect(); /**@}*/ /* Pointer to Bluetooth dongle library instance */ BTD *pBtd; /* Set true when a channel is created */ bool SDPConnected; bool RFCOMMConnected; uint16_t hci_handle; // The HCI Handle for the connection /* Variables used by L2CAP state machines */ uint8_t l2cap_sdp_state; uint8_t l2cap_rfcomm_state; uint8_t l2capoutbuf[BULK_MAXPKTSIZE]; // General purpose buffer for l2cap out data uint8_t rfcommbuf[10]; // Buffer for RFCOMM Commands /* L2CAP Channels */ uint8_t sdp_scid[2]; // L2CAP source CID for SDP uint8_t sdp_dcid[2]; // 0x0050 uint8_t rfcomm_scid[2]; // L2CAP source CID for RFCOMM uint8_t rfcomm_dcid[2]; // 0x0051 uint8_t identifier; // Identifier for command /* RFCOMM Variables */ uint8_t rfcommChannel; uint8_t rfcommChannelConnection; // This is the channel the SPP channel will be running at uint8_t rfcommDirection; uint8_t rfcommCommandResponse; uint8_t rfcommChannelType; uint8_t rfcommPfBit; bool creditSent; uint8_t rfcommDataBuffer[100]; // Create a 100 sized buffer for incoming data uint8_t sppOutputBuffer[100]; // Create a 100 sized buffer for outgoing SPP data uint8_t sppIndex; uint8_t rfcommAvailable; uint8_t bytesRead; // Counter to see when it's time to send more credit virtual void SDP_Command(uint8_t *data, uint8_t nbytes) = 0; // Used for SDP commands /* RFCOMM Commands */ virtual void RFCOMM_Command(uint8_t *data, uint8_t nbytes) = 0; // Used for RFCOMM commands void sendRfcomm(uint8_t channel, uint8_t direction, uint8_t CR, uint8_t channelType, uint8_t pfBit, uint8_t *data, uint8_t length); void sendRfcommCredit(uint8_t channel, uint8_t direction, uint8_t CR, uint8_t channelType, uint8_t pfBit, uint8_t credit); uint8_t calcFcs(uint8_t *data); bool checkFcs(uint8_t *data, uint8_t fcs); uint8_t crc(uint8_t *data); }; #endif