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1 | /*
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2 |
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3 | This example tests to see if the modem of the
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4 | GSM shield is working correctly. You do not need
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5 | a SIM card for this example.
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6 |
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7 | Circuit:
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8 | * GSM shield attached
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9 |
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10 | Created 12 Jun 2012
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11 | by David del Peral
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12 | modified 21 Nov 2012
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13 | by Tom Igoe
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14 |
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15 | http://arduino.cc/en/Tutorial/GSMToolsTestModem
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16 |
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17 | This sample code is part of the public domain
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18 |
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19 | */
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20 |
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21 | // libraries
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22 | #include <GSM.h>
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23 |
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24 | // modem verification object
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25 | GSMModem modem;
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26 |
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27 | // IMEI variable
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28 | String IMEI = "";
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29 |
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30 | void setup()
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31 | {
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32 | // initialize serial communications and wait for port to open:
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33 | Serial.begin(9600);
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34 | while (!Serial) {
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35 | ; // wait for serial port to connect. Needed for Leonardo only
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36 | }
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37 |
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38 | // start modem test (reset and check response)
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39 | Serial.print("Starting modem test...");
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40 | if (modem.begin())
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41 | Serial.println("modem.begin() succeeded");
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42 | else
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43 | Serial.println("ERROR, no modem answer.");
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44 | }
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45 |
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46 | void loop()
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47 | {
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48 | // get modem IMEI
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49 | Serial.print("Checking IMEI...");
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50 | IMEI = modem.getIMEI();
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51 |
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52 | // check IMEI response
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53 | if (IMEI != NULL)
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54 | {
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55 | // show IMEI in serial monitor
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56 | Serial.println("Modem's IMEI: " + IMEI);
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57 | // reset modem to check booting:
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58 | Serial.print("Resetting modem...");
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59 | modem.begin();
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60 | // get and check IMEI one more time
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61 | if (modem.getIMEI() != NULL)
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62 | {
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63 | Serial.println("Modem is functoning properly");
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64 | }
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65 | else
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66 | {
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67 | Serial.println("Error: getIMEI() failed after modem.begin()");
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68 | }
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69 | }
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70 | else
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71 | {
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72 | Serial.println("Error: Could not get IMEI");
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73 | }
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74 | // do nothing:
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75 | while (true);
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76 | }
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77 |
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