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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 Telefónica 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
*/
#include <GSM3ShieldV1VoiceProvider.h>
#include <Arduino.h>
GSM3ShieldV1VoiceProvider::GSM3ShieldV1VoiceProvider()
{
phonelength=0;
theGSM3MobileVoiceProvider=this;
}
void GSM3ShieldV1VoiceProvider::initialize()
{
theGSM3ShieldV1ModemCore.registerUMProvider(this);
}
//Voice Call main function.
int GSM3ShieldV1VoiceProvider::voiceCall(const char* to)
{
theGSM3ShieldV1ModemCore.genericCommand_rq(PSTR("ATD"),false);
theGSM3ShieldV1ModemCore.print(to);
theGSM3ShieldV1ModemCore.print(";\r");
setvoiceCallStatus(CALLING);
return 1;
}
//Retrieve calling number main function.
int GSM3ShieldV1VoiceProvider::retrieveCallingNumber (char* buffer, int bufsize)
{
theGSM3ShieldV1ModemCore.setPhoneNumber(buffer);
phonelength = bufsize;
theGSM3ShieldV1ModemCore.setCommandError(0);
theGSM3ShieldV1ModemCore.setCommandCounter(1);
theGSM3ShieldV1ModemCore.openCommand(this,RETRIEVECALLINGNUMBER);
retrieveCallingNumberContinue();
return theGSM3ShieldV1ModemCore.getCommandError();
}
//Retrieve calling number Continue function.
void GSM3ShieldV1VoiceProvider::retrieveCallingNumberContinue()
{
// 1: AT+CLCC
// 2: Receive +CLCC: 1,1,4,0,0,"num",129,""
// This implementation really does not care much if the modem aswers trash to CMGL
bool resp;
//int msglength_aux;
switch (theGSM3ShieldV1ModemCore.getCommandCounter()) {
case 1:
theGSM3ShieldV1ModemCore.genericCommand_rq(PSTR("AT+CLCC"));
theGSM3ShieldV1ModemCore.setCommandCounter(2);
break;
case 2:
if(parseCLCC(theGSM3ShieldV1ModemCore.getPhoneNumber(), phonelength))
{
theGSM3ShieldV1ModemCore.closeCommand(1);
}
break;
}
}
//CLCC parse.
bool GSM3ShieldV1VoiceProvider::parseCLCC(char* number, int nlength)
{
theGSM3ShieldV1ModemCore.theBuffer().extractSubstring("+CLCC: 1,1,4,0,0,\"","\"", number, nlength);
theGSM3ShieldV1ModemCore.theBuffer().flush();
return true;
}
//Answer Call main function.
int GSM3ShieldV1VoiceProvider::answerCall()
{
theGSM3ShieldV1ModemCore.setCommandError(0);
theGSM3ShieldV1ModemCore.setCommandCounter(1);
theGSM3ShieldV1ModemCore.openCommand(this,ANSWERCALL);
answerCallContinue();
return theGSM3ShieldV1ModemCore.getCommandError();
}
//Answer Call continue function.
void GSM3ShieldV1VoiceProvider::answerCallContinue()
{
// 1: ATA
// 2: Waiting for OK
// This implementation really does not care much if the modem aswers trash to CMGL
bool resp;
switch (theGSM3ShieldV1ModemCore.getCommandCounter()) {
case 1:
// ATA ;
theGSM3ShieldV1ModemCore.genericCommand_rq(PSTR("ATA"));
theGSM3ShieldV1ModemCore.setCommandCounter(2);
break;
case 2:
if(theGSM3ShieldV1ModemCore.genericParse_rsp(resp))
{
setvoiceCallStatus(TALKING);
if (resp) theGSM3ShieldV1ModemCore.closeCommand(1);
else theGSM3ShieldV1ModemCore.closeCommand(3);
}
break;
}
}
//Hang Call main function.
int GSM3ShieldV1VoiceProvider::hangCall()
{
theGSM3ShieldV1ModemCore.setCommandError(0);
theGSM3ShieldV1ModemCore.setCommandCounter(1);
theGSM3ShieldV1ModemCore.openCommand(this,HANGCALL);
hangCallContinue();
return theGSM3ShieldV1ModemCore.getCommandError();
}
//Hang Call continue function.
void GSM3ShieldV1VoiceProvider::hangCallContinue()
{
// 1: ATH
// 2: Waiting for OK
bool resp;
switch (theGSM3ShieldV1ModemCore.getCommandCounter()) {
case 1:
//ATH
theGSM3ShieldV1ModemCore.genericCommand_rq(PSTR("ATH"));
theGSM3ShieldV1ModemCore.setCommandCounter(2);
break;
case 2:
if(theGSM3ShieldV1ModemCore.genericParse_rsp(resp))
{
setvoiceCallStatus(IDLE_CALL);
if (resp) theGSM3ShieldV1ModemCore.closeCommand(1);
else theGSM3ShieldV1ModemCore.closeCommand(3);
}
break;
}
}
//Response management.
void GSM3ShieldV1VoiceProvider::manageResponse(byte from, byte to)
{
switch(theGSM3ShieldV1ModemCore.getOngoingCommand())
{
case ANSWERCALL:
answerCallContinue();
break;
case HANGCALL:
hangCallContinue();
break;
case RETRIEVECALLINGNUMBER:
retrieveCallingNumberContinue();
break;
}
}
//URC recognize.
bool GSM3ShieldV1VoiceProvider::recognizeUnsolicitedEvent(byte oldTail)
{
int nlength;
char auxLocate [15];
//RING.
prepareAuxLocate(PSTR("RING"), auxLocate);
if(theGSM3ShieldV1ModemCore.theBuffer().locate(auxLocate))
{
// RING
setvoiceCallStatus(RECEIVINGCALL);
theGSM3ShieldV1ModemCore.theBuffer().flush();
return true;
}
//CALL ACEPTED.
prepareAuxLocate(PSTR("+COLP:"), auxLocate);
if(theGSM3ShieldV1ModemCore.theBuffer().locate(auxLocate))
{
//DEBUG
//Serial.println("Call Accepted.");
setvoiceCallStatus(TALKING);
theGSM3ShieldV1ModemCore.theBuffer().flush();
return true;
}
//NO CARRIER.
prepareAuxLocate(PSTR("NO CARRIER"), auxLocate);
if(theGSM3ShieldV1ModemCore.theBuffer().locate(auxLocate))
{
//DEBUG
//Serial.println("NO CARRIER received.");
setvoiceCallStatus(IDLE_CALL);
theGSM3ShieldV1ModemCore.theBuffer().flush();
return true;
}
//BUSY.
prepareAuxLocate(PSTR("BUSY"), auxLocate);
if(theGSM3ShieldV1ModemCore.theBuffer().locate(auxLocate))
{
//DEBUG
//Serial.println("BUSY received.");
setvoiceCallStatus(IDLE_CALL);
theGSM3ShieldV1ModemCore.theBuffer().flush();
return true;
}
//CALL RECEPTION.
prepareAuxLocate(PSTR("+CLIP:"), auxLocate);
if(theGSM3ShieldV1ModemCore.theBuffer().locate(auxLocate))
{
theGSM3ShieldV1ModemCore.theBuffer().flush();
setvoiceCallStatus(RECEIVINGCALL);
return true;
}
return false;
}