[175] | 1 | /*
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| 2 | Receive Voice Call
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| 3 |
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| 4 | This sketch, for the Arduino GSM shield, receives voice calls,
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| 5 | displays the calling number, waits a few seconds then hangs up.
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| 6 |
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| 7 | Circuit:
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| 8 | * GSM shield
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| 9 | * Voice circuit. Refer to to the GSM shield getting started guide
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| 10 | at http://arduino.cc/en/Guide/ArduinoGSMShield#toc11
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| 11 | * SIM card that can accept voice calls
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| 12 |
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| 13 | ATTENTION: to work correctly with M0/M0 pro you have to connect pin 2 to pin 4 of the shield
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| 14 |
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| 15 | With no voice circuit the call will connect, but will not send or receive sound
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| 16 |
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| 17 | created Mar 2012
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| 18 | by Javier Zorzano
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| 19 |
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| 20 | This example is in the public domain.
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| 21 |
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| 22 |
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| 23 | Added Arduino GSM Shield 2 features
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| 24 | modified Feb 2016
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| 25 | by Arduino.org team (http://arduino.org)
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| 26 |
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| 27 | */
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| 28 |
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| 29 | // Include the GSM library
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| 30 | #include <GSM.h>
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| 31 |
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| 32 | // PIN Number
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| 33 | #define PINNUMBER ""
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| 34 |
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| 35 | // initialize the library instance
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| 36 | GSM gsmAccess;
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| 37 | GSM2 gsmAccessV2;
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| 38 | GSMVoiceCall vcs;
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| 39 |
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| 40 | #define number_len 20 // define incoming call number lenght
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| 41 |
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| 42 | // Array to hold the number for the incoming call
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| 43 | char number[number_len];
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| 44 |
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| 45 | void setup()
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| 46 | {
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| 47 | // initialize serial communications and wait for port to open:
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| 48 | SerialUSB.begin(9600);
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| 49 | while (!SerialUSB) {
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| 50 | ; // wait for serial port to connect. Needed for Leonardo only
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| 51 | }
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| 52 |
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| 53 | SerialUSB.println("Receive Voice Call");
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| 54 |
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| 55 | // connection state
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| 56 | boolean notConnected = true;
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| 57 |
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| 58 | // Start GSM shield
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| 59 | // If your SIM has PIN, pass it as a parameter of begin() in quotes
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| 60 | while (notConnected)
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| 61 | {
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| 62 | if (gsmAccess.begin(PINNUMBER) == GSM_READY)
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| 63 | notConnected = false;
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| 64 | else
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| 65 | {
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| 66 | SerialUSB.println("Not connected");
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| 67 | delay(1000);
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| 68 | }
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| 69 | }
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| 70 |
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| 71 | // This makes sure the modem correctly reports incoming events
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| 72 | vcs.hangCall();
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| 73 | gsmAccessV2.muteControl(0); //not allowed by the module
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| 74 | gsmAccessV2.CommandEcho(1); // set echo
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| 75 | gsmAccessV2.speakerMode(1); //set speaker mode
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| 76 | gsmAccessV2.speakerLoudness(3); //set speaker loudness
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| 77 | gsmAccessV2.swapAudioChannel(1); //set audio channel
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| 78 | gsmAccessV2.microphoneGainLevel(1,13); //set microphone gain level
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| 79 | gsmAccessV2.ringerSoundLevel(20); //set ring sound level
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| 80 | gsmAccessV2.alertSoundMode(0); //set alert sound mode (sound)
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| 81 | gsmAccessV2.loudSpeakerVolumeLevel(20); //set loudspeaker volume level
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| 82 |
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| 83 | SerialUSB.println("Waiting for a call");
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| 84 | }
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| 85 |
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| 86 | void loop()
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| 87 | {
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| 88 | // Check the status of the voice call
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| 89 | switch (vcs.getvoiceCallStatus())
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| 90 | {
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| 91 | case IDLE_CALL: // Nothing is happening
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| 92 |
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| 93 | break;
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| 94 |
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| 95 | case RECEIVINGCALL: // Yes! Someone is calling us
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| 96 |
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| 97 | SerialUSB.println("RECEIVING CALL");
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| 98 |
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| 99 |
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| 100 | // Retrieve the calling number
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| 101 | vcs.retrieveCallingNumber(number, number_len);
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| 102 |
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| 103 | // Print the calling number
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| 104 | SerialUSB.print("Number:");
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| 105 | SerialUSB.println(number);
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| 106 | SerialUSB.println("Press a to answer");
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| 107 | while(SerialUSB.read() !='a');
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| 108 | // Answer the call, establish the call
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| 109 | vcs.answerCall();
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| 110 | break;
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| 111 |
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| 112 | case TALKING: // In this case the call would be established
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| 113 |
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| 114 | SerialUSB.println("TALKING. Press h to hang up.");
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| 115 | while (SerialUSB.read() != 'h')
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| 116 | delay(100);
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| 117 | vcs.hangCall();
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| 118 | SerialUSB.println("Hanging up and waiting for the next call.");
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| 119 | break;
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| 120 | }
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| 121 | delay(1000);
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| 122 | }
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| 123 |
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| 124 |
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