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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 Telefnica 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 <GSM3VoiceCallService.h>
#include <Arduino.h>
#include <GSM3ShieldV1VoiceProvider.h>
GSM3ShieldV1VoiceProvider theShieldV1VoiceProvider;
// While there is only a shield (ShieldV1) we will include it by default
#define GSM3VOICECALLSERVICE_SYNCH 0x01 // 1: synchronous 0: asynchronous
#define __TOUT__ 10000
GSM3VoiceCallService::GSM3VoiceCallService(bool synch)
{
if(synch)
flags |= GSM3VOICECALLSERVICE_SYNCH;
theGSM3MobileVoiceProvider->initialize();
}
GSM3_voiceCall_st GSM3VoiceCallService::getvoiceCallStatus()
{
if(theGSM3MobileVoiceProvider==0)
return IDLE_CALL;
return theGSM3MobileVoiceProvider->getvoiceCallStatus();
}
int GSM3VoiceCallService::ready()
{
if(theGSM3MobileVoiceProvider==0)
return 0;
return theGSM3MobileVoiceProvider->ready();
}
int GSM3VoiceCallService::voiceCall(const char* to, unsigned long timeout)
{
if(theGSM3MobileVoiceProvider==0)
return 0;
if(flags & GSM3VOICECALLSERVICE_SYNCH )
{
theGSM3MobileVoiceProvider->voiceCall(to);
unsigned long m;
m=millis();
// Wait an answer for timeout
while(((millis()-m)< timeout )&&(getvoiceCallStatus()==CALLING))
delay(100);
if(getvoiceCallStatus()==TALKING)
return 1;
else
return 0;
}
else
{
return theGSM3MobileVoiceProvider->voiceCall(to);
}
}
int GSM3VoiceCallService::answerCall()
{
if(theGSM3MobileVoiceProvider==0)
return 0;
return waitForAnswerIfNeeded(theGSM3MobileVoiceProvider->answerCall());
}
int GSM3VoiceCallService::hangCall()
{
if(theGSM3MobileVoiceProvider==0)
return 0;
return waitForAnswerIfNeeded(theGSM3MobileVoiceProvider->hangCall());
}
int GSM3VoiceCallService::retrieveCallingNumber(char* buffer, int bufsize)
{
if(theGSM3MobileVoiceProvider==0)
return 0;
return waitForAnswerIfNeeded(theGSM3MobileVoiceProvider->retrieveCallingNumber(buffer, bufsize));
}
int GSM3VoiceCallService::waitForAnswerIfNeeded(int returnvalue)
{
// If synchronous
if(flags & GSM3VOICECALLSERVICE_SYNCH )
{
unsigned long m;
m=millis();
// Wait for __TOUT__
while(((millis()-m)< __TOUT__ )&&(ready()==0))
delay(100);
// If everything was OK, return 1
// else (timeout or error codes) return 0;
if(ready()==1)
return 1;
else
return 0;
}
// If not synchronous just kick ahead the coming result
return ready();
}
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