| /* | |
| This example tests to see if the modem of the | |
| GSM shield is working correctly. You do not need | |
| a SIM card for this example. | |
| Circuit: | |
| * GSM shield attached | |
| Created 12 Jun 2012 | |
| by David del Peral | |
| modified 21 Nov 2012 | |
| by Tom Igoe | |
| http://www.arduino.cc/en/Tutorial/GSMToolsTestModem | |
| This sample code is part of the public domain | |
| */ | |
| // libraries | |
| // modem verification object | |
| GSMModem modem; | |
| // IMEI variable | |
| String IMEI = ""; | |
| void setup() { | |
| // initialize serial communications and wait for port to open: | |
| Serial.begin(9600); | |
| while (!Serial) { | |
| ; // wait for serial port to connect. Needed for Leonardo only | |
| } | |
| // start modem test (reset and check response) | |
| Serial.print("Starting modem test..."); | |
| if (modem.begin()) { | |
| Serial.println("modem.begin() succeeded"); | |
| } else { | |
| Serial.println("ERROR, no modem answer."); | |
| } | |
| } | |
| void loop() { | |
| // get modem IMEI | |
| Serial.print("Checking IMEI..."); | |
| IMEI = modem.getIMEI(); | |
| // check IMEI response | |
| if (IMEI != NULL) { | |
| // show IMEI in serial monitor | |
| Serial.println("Modem's IMEI: " + IMEI); | |
| // reset modem to check booting: | |
| Serial.print("Resetting modem..."); | |
| modem.begin(); | |
| // get and check IMEI one more time | |
| if (modem.getIMEI() != NULL) { | |
| Serial.println("Modem is functoning properly"); | |
| } else { | |
| Serial.println("Error: getIMEI() failed after modem.begin()"); | |
| } | |
| } else { | |
| Serial.println("Error: Could not get IMEI"); | |
| } | |
| // do nothing: | |
| while (true); | |
| } | |