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