226 lines
8.2 KiB
C++
226 lines
8.2 KiB
C++
/* Copyright (C) 2012 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 _spp_h_
|
|
#define _spp_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 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
|
|
*/
|
|
|
|
/**
|
|
* 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 SPP : public BluetoothService, public Stream {
|
|
public:
|
|
/**
|
|
* Constructor for the SPP class.
|
|
* @param p Pointer to BTD class instance.
|
|
* @param name Set the name to BTD#btdName. If argument is omitted, then "Arduino" will be used.
|
|
* @param pin Write the pin to BTD#btdPin. If argument is omitted, then "0000" will be used.
|
|
*/
|
|
SPP(BTD *p, const char *name = "Arduino", const char *pin = "0000");
|
|
|
|
/** @name BluetoothService implementation */
|
|
/** Used this to disconnect the virtual serial port. */
|
|
void disconnect();
|
|
/**@}*/
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
int available(void);
|
|
|
|
/** Send out all bytes in the buffer. */
|
|
void flush(void) {
|
|
send();
|
|
};
|
|
/**
|
|
* 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.
|
|
*/
|
|
int peek(void);
|
|
/**
|
|
* Used to read the buffer.
|
|
* @return Return the byte. Will return -1 if no bytes are available.
|
|
*/
|
|
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.
|
|
*/
|
|
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.
|
|
*/
|
|
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.
|
|
*/
|
|
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.
|
|
*/
|
|
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.
|
|
*/
|
|
void ACLData(uint8_t* ACLData);
|
|
/** Used to establish the connection automatically. */
|
|
void Run();
|
|
/** Use this to reset the service. */
|
|
void Reset();
|
|
/**
|
|
* Called when a device is successfully initialized.
|
|
* Use attachOnInit(void (*funcOnInit)(void)) to call your own function.
|
|
* This is useful for instance if you want to set the LEDs in a specific way.
|
|
*/
|
|
void onInit();
|
|
/**@}*/
|
|
|
|
private:
|
|
/* Set true when a channel is created */
|
|
bool SDPConnected;
|
|
bool RFCOMMConnected;
|
|
|
|
/* 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
|
|
|
|
/* 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;
|
|
|
|
uint32_t timer;
|
|
bool waitForLastCommand;
|
|
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;
|
|
|
|
bool firstMessage; // Used to see if it's the first SDP request received
|
|
uint8_t bytesRead; // Counter to see when it's time to send more credit
|
|
|
|
/* State machines */
|
|
void SDP_task(); // SDP state machine
|
|
void RFCOMM_task(); // RFCOMM state machine
|
|
|
|
/* SDP Commands */
|
|
void SDP_Command(uint8_t *data, uint8_t nbytes);
|
|
void serviceNotSupported(uint8_t transactionIDHigh, uint8_t transactionIDLow);
|
|
void serialPortResponse1(uint8_t transactionIDHigh, uint8_t transactionIDLow);
|
|
void serialPortResponse2(uint8_t transactionIDHigh, uint8_t transactionIDLow);
|
|
void l2capResponse1(uint8_t transactionIDHigh, uint8_t transactionIDLow);
|
|
void l2capResponse2(uint8_t transactionIDHigh, uint8_t transactionIDLow);
|
|
|
|
/* RFCOMM Commands */
|
|
void RFCOMM_Command(uint8_t *data, uint8_t nbytes);
|
|
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
|