1 | /*
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2 | This file is part of the GSM3 communications library for Arduino
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3 | -- Multi-transport communications platform
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4 | -- Fully asynchronous
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5 | -- Includes code for the Arduino-Telefonica GSM/GPRS Shield V1
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6 | -- Voice calls
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7 | -- SMS
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8 | -- TCP/IP connections
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9 | -- HTTP basic clients
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10 |
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11 | This library has been developed by Telefónica Digital - PDI -
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12 | - Physical Internet Lab, as part as its collaboration with
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13 | Arduino and the Open Hardware Community.
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14 |
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15 | September-December 2012
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16 |
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17 | This library is free software; you can redistribute it and/or
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18 | modify it under the terms of the GNU Lesser General Public
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19 | License as published by the Free Software Foundation; either
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20 | version 2.1 of the License, or (at your option) any later version.
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21 |
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22 | This library is distributed in the hope that it will be useful,
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23 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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24 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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25 | Lesser General Public License for more details.
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26 |
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27 | You should have received a copy of the GNU Lesser General Public
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28 | License along with this library; if not, write to the Free Software
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29 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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30 |
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31 | The latest version of this library can always be found at
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32 | https://github.com/BlueVia/Official-Arduino
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33 | */
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34 | #include <GSM3VoiceCallService.h>
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35 | #include <Arduino.h>
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36 |
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37 | #include <GSM3ShieldV1VoiceProvider.h>
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38 | GSM3ShieldV1VoiceProvider theShieldV1VoiceProvider;
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39 |
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40 | // While there is only a shield (ShieldV1) we will include it by default
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41 |
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42 | #define GSM3VOICECALLSERVICE_SYNCH 0x01 // 1: synchronous 0: asynchronous
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43 | #define __TOUT__ 10000
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44 |
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45 |
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46 |
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47 |
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48 | GSM3VoiceCallService::GSM3VoiceCallService(bool synch)
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49 | {
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50 | GSM3ShieldV1VoiceProvider theShieldV1VoiceProvider; //needed to avoid hard fault in M0
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51 | if(synch)
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52 | flags |= GSM3VOICECALLSERVICE_SYNCH;
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53 | theGSM3MobileVoiceProvider->initialize();
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54 | }
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55 |
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56 | GSM3_voiceCall_st GSM3VoiceCallService::getvoiceCallStatus()
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57 | {
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58 | if(theGSM3MobileVoiceProvider==0)
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59 | return IDLE_CALL;
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60 | theShieldV1VoiceProvider.recognizeUnsolicitedEvent(1) ;
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61 | return theGSM3MobileVoiceProvider->getvoiceCallStatus();
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62 | }
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63 |
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64 | int GSM3VoiceCallService::ready()
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65 | {
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66 | if(theGSM3MobileVoiceProvider==0)
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67 | return 0;
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68 |
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69 | return theGSM3MobileVoiceProvider->ready();
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70 | }
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71 |
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72 | int GSM3VoiceCallService::voiceCall(const char* to, unsigned long timeout)
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73 | {
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74 | if(theGSM3MobileVoiceProvider==0){
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75 | return 0;
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76 | }
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77 |
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78 | if(flags & GSM3VOICECALLSERVICE_SYNCH )
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79 | {
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80 | theGSM3MobileVoiceProvider->voiceCall(to);
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81 | unsigned long m;
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82 | m=millis();
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83 | // Wait an answer for timeout
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84 | while(((millis()-m)< timeout )&&(getvoiceCallStatus()==CALLING)){
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85 | delay(100);
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86 | }
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87 | if(getvoiceCallStatus()==TALKING)
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88 | return 1;
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89 | else
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90 | return 0;
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91 | }
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92 | else
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93 | {
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94 | return theGSM3MobileVoiceProvider->voiceCall(to);
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95 | }
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96 |
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97 | }
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98 |
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99 | int GSM3VoiceCallService::answerCall()
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100 | {
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101 | if(theGSM3MobileVoiceProvider==0)
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102 | return 0;
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103 |
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104 | return waitForAnswerIfNeeded(theGSM3MobileVoiceProvider->answerCall());
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105 | }
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106 |
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107 | int GSM3VoiceCallService::hangCall()
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108 | {
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109 | if(theGSM3MobileVoiceProvider==0)
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110 | return 0;
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111 |
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112 | return waitForAnswerIfNeeded(theGSM3MobileVoiceProvider->hangCall());
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113 | }
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114 |
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115 | int GSM3VoiceCallService::retrieveCallingNumber(char* buffer, int bufsize)
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116 | {
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117 | if(theGSM3MobileVoiceProvider==0)
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118 | return 0;
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119 |
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120 | return waitForAnswerIfNeeded(theGSM3MobileVoiceProvider->retrieveCallingNumber(buffer, bufsize));
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121 | }
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122 |
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123 | int GSM3VoiceCallService::waitForAnswerIfNeeded(int returnvalue)
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124 | {
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125 | // If synchronous
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126 | if(flags & GSM3VOICECALLSERVICE_SYNCH )
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127 | {
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128 | unsigned long m;
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129 | m=millis();
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130 | // Wait for __TOUT__
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131 | while(((millis()-m)< __TOUT__ )&&(ready()==0))
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132 | delay(100);
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133 | // If everything was OK, return 1
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134 | // else (timeout or error codes) return 0;
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135 | if(ready()==1)
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136 | return 1;
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137 | else
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138 | return 0;
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139 | }
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140 | // If not synchronous just kick ahead the coming result
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141 | return ready();
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142 | }
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143 |
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144 |
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145 |
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146 |
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