Receive Voice Call

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1GSM gsmAccess;
2
3GSMVoiceCall vcs;

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1char numtel[20];

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1void setup(){
2
3  Serial.begin(9600);
4
5  Serial.println("Receive Voice Call");

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1boolean notConnected = true;

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1while(notConnected)
2
3  {
4
5    if(gsmAccess.begin(PINNUMBER)==GSM_READY)
6
7      notConnected = false;
8
9    else
10
11    {
12
13      Serial.println("Not connected");
14
15      delay(1000);
16
17    }
18
19  }

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1Serial.println("GSM initialized.");
2
3  Serial.println("Awaiting call.");
4}

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1void loop()
2{
3
4  switch (vcs.getvoiceCallStatus())
5
6  {

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1case IDLE_CALL:
2
3      break;

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1case RECEIVINGCALL:
2
3      Serial.println("RECEIVING CALL");
4
5      vcs.retrieveCallingNumber(numtel, 20);
6
7      Serial.print("Number:");
8
9      Serial.println(numtel);
10
11      vcs.answerCall();
12
13      break;

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1case TALKING:
2
3      Serial.println("TALKING. Enter line to interrupt.");
4
5      while(Serial.read()!='\n')
6
7        delay(100);
8
9      vcs.hangCall();
10
11      Serial.println("HANG. Waiting Call.");
12
13      break;
14
15  }

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1delay(1000);
2}

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1/*
2
3 Receive Voice Call
4
5 This sketch, for the Arduino GSM shield, receives voice calls,
6
7 displays the calling number, waits a few seconds then hangs up.
8
9 Circuit:
10
11 * GSM shield
12
13 * Voice circuit. Refer to to the GSM shield getting started guide
14
15   at http://www.arduino.cc/en/Guide/ArduinoGSMShield#toc11
16
17 * SIM card that can accept voice calls
18
19 With no voice circuit the call will connect, but will not send or receive sound
20
21 created Mar 2012
22
23 by Javier Zorzano
24
25 This example is in the public domain.
26
27 http://www.arduino.cc/en/Tutorial/GSMExamplesReceiveVoiceCall
28
29 */
30
31// Include the GSM library
32#include <GSM.h>
33
34// PIN Number
35#define PINNUMBER ""
36
37// initialize the library instance
38
39GSM gsmAccess;
40
41GSMVoiceCall vcs;
42
43// Array to hold the number for the incoming call
44char numtel[20];
45
46void setup() {
47
48  // initialize serial communications and wait for port to open:
49
50  Serial.begin(9600);
51
52  while (!Serial) {
53
54    ; // wait for serial port to connect. Needed for native USB port only
55
56  }
57
58  Serial.println("Receive Voice Call");
59
60  // connection state
61
62  bool notConnected = true;
63
64  // Start GSM shield
65
66  // If your SIM has PIN, pass it as a parameter of begin() in quotes
67
68  while (notConnected) {
69
70    if (gsmAccess.begin(PINNUMBER) == GSM_READY) {
71
72      notConnected = false;
73
74    } else {
75
76      Serial.println("Not connected");
77
78      delay(1000);
79
80    }
81
82  }
83
84  // This makes sure the modem correctly reports incoming events
85
86  vcs.hangCall();
87
88  Serial.println("Waiting for a call");
89}
90
91void loop() {
92
93  // Check the status of the voice call
94
95  switch (vcs.getvoiceCallStatus()) {
96
97    case IDLE_CALL: // Nothing is happening
98
99      break;
100
101    case RECEIVINGCALL: // Yes! Someone is calling us
102
103      Serial.println("RECEIVING CALL");
104
105      // Retrieve the calling number
106
107      vcs.retrieveCallingNumber(numtel, 20);
108
109      // Print the calling number
110
111      Serial.print("Number:");
112
113      Serial.println(numtel);
114
115      // Answer the call, establish the call
116
117      vcs.answerCall();
118
119      break;
120
121    case TALKING:  // In this case the call would be established
122
123      Serial.println("TALKING. Press enter to hang up.");
124
125      while (Serial.read() != '\n') {
126
127        delay(100);
128
129      }
130
131      vcs.hangCall();
132
133      Serial.println("Hanging up and waiting for the next call.");
134
135      break;
136
137  }
138
139  delay(1000);
140}