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/*
This file is part of the GSM3 communications library for Arduino
-- Multi-transport communications platform
-- Fully asynchronous
-- Includes code for the Arduino-Telefonica GSM/GPRS Shield V1
-- Voice calls
-- SMS
-- TCP/IP connections
-- HTTP basic clients
This library has been developed by Telef�nica Digital - PDI -
- Physical Internet Lab, as part as its collaboration with
Arduino and the Open Hardware Community.
September-December 2012
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
The latest version of this library can always be found at
https://github.com/BlueVia/Official-Arduino
*/
#ifndef __GSM3_SOFTSERIAL__
#define __GSM3_SOFTSERIAL__
// An adaptation of NewSoftSerial for Modem Shields
// Assumes directly that Serial is attached to Pins 2 and 3, not inverse
// We are implementing it because NewSoftSerial does not deal correctly with floods
// of data
#include "GSM3CircularBuffer.h"
#include <avr/pgmspace.h>
/*
#define _COMSTATUS_ANSWERRECEIVED_ 0x100
#define _COMSTATUS_SMSRECEIVED_ 0x80
#define _COMSTATUS_CALLRECEIVED_ 0x40
// PLEASE, when accessing the sockets use "for" and >> (bitwise operator)
#define _COMSTATUS_SOCKET6RECEIVED_ 0x20
#define _COMSTATUS_SOCKET5RECEIVED_ 0x10
#define _COMSTATUS_SOCKET4RECEIVED_ 0x08
#define _COMSTATUS_SOCKET3RECEIVED_ 0x04
#define _COMSTATUS_SOCKET2RECEIVED_ 0x02
#define _COMSTATUS_SOCKET1RECEIVED_ 0x01
#define __CALLTABLEMASK__ 0x3
*/
class GSM3SoftSerialMgr
{
public:
/** Manages soft serial message
@param from Initial byte
@param to Final byte
*/
virtual void manageMsg(byte from, byte to);
};
// This class manages software serial communications
// Changing it so it doesn't know about modems or whatever
class GSM3SoftSerial : public GSM3CircularBufferManager
{
private:
uint8_t _receiveBitMask;
volatile uint8_t *_receivePortRegister;
uint8_t _transmitBitMask;
volatile uint8_t *_transmitPortRegister;
static GSM3SoftSerial* _activeObject;
GSM3SoftSerialMgr* mgr;
uint16_t _rx_delay_centering;
uint16_t _rx_delay_intrabit;
uint16_t _rx_delay_stopbit;
uint16_t _tx_delay;
uint8_t _flags;
/** Write in tx_pin
@param pin_state Pin state
*/
void tx_pin_write(uint8_t pin_state);
/** Set transmission
*/
void setTX();
/** Set receiver
*/
void setRX();
/** Receive
*/
void recv();
/** Read from rx_pin
@return receive bit mask
*/
uint8_t rx_pin_read();
void setComsReceived();
/** Write a character in serial connection, final action after escaping
@param c Character
@return 1 if succesful, 0 if transmission delay = 0
*/
virtual size_t finalWrite(uint8_t);
/** Decide, attending to escapes, if the received character should we
kept, forgotten, or changed
@param c Character, may be changed
@return 1 if shall be kept, 0 if forgotten
*/
bool keepThisChar(uint8_t* c);
// Checks the buffer for well-known events.
//bool recognizeUnsolicitedEvent(byte oldTail);
public:
/** Tuned delay in microcontroller
@param delay Time to delay
*/
static /*inline */void tunedDelay(uint16_t delay);
GSM3CircularBuffer cb; // Circular buffer
/** Register serial manager
@param manager Serial manager
*/
inline void registerMgr(GSM3SoftSerialMgr* manager){mgr=manager;};
/** If there is spaceAvailable in the buffer, lets send a XON
*/
void spaceAvailable();
/** Write a character in serial connection
@param c Character
@return 1 if succesful, 0 if transmission delay = 0
*/
virtual size_t write(uint8_t);
/** Constructor */
GSM3SoftSerial();
/** Establish serial connection
@param speed Baudrate
@return
*/
int begin(long speed);
/** Manage interruptions
*/
static inline void handle_interrupt();
/** Close serial connection
*/
void close();
};
#endif
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