Hi
I am having trouble getting my new gsm shield to work on my mega adk. I am using the standard gsm library to use the demo gsm sketches and it is using the sim card that came with the shield. I ma getting nothing out of the serial monitor except the very first printouts saying that the system his running. For example if I upload the gsm scanner i get the message saying that the scanner is starting but I get nothing else output. I am using a power supply for the mega ( 9v) and the led that light up are the on and then the status one comes on and net flashes for a bit then all seems to go quiet.
Code as follows. I have added an extra function that is supposed to copy the imei of the modem but nothing happens except the output below appears.
/*
GSM Scan Networks
This example prints out the IMEI number of the modem,
then checks to see if it's connected to a carrier. If so,
it prints the phone number associated with the card.
Then it scans for nearby networks and prints out their signal strengths.
Circuit:
* GSM shield
* SIM card
Created 8 Mar 2012
by Tom Igoe, implemented by Javier Carazo
Modified 4 Feb 2013
by Scott Fitzgerald
http://arduino.cc/en/Tutorial/GSMToolsGsmScanNetworks
This example code is part of the public domain
*/
// libraries
#include <GSM.h>
// PIN Number
#define PINNUMBER ""
// initialize the library instance
GSM gsmAccess; // include a 'true' parameter to enable debugging
GSMScanner scannerNetworks;
GSMModem modemTest;
// Save data variables
String IMEI = "";
// serial monitor result messages
String errortext = "ERROR";
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
}
Serial.println("GSM networks scanner");
test();
scannerNetworks.begin();
// connection state
boolean notConnected = true;
// Start GSM shield
// If your SIM has PIN, pass it as a parameter of begin() in quotes
while(notConnected)
{
if(gsmAccess.begin(PINNUMBER)==GSM_READY)
notConnected = false;
else
{
Serial.println("Not connected");
delay(1000);
}
}
// get modem parameters
// IMEI, modem unique identifier
Serial.print("Modem IMEI: ");
IMEI = modemTest.getIMEI();
IMEI.replace("\n","");
if(IMEI != NULL)
Serial.println(IMEI);
}
void loop()
{
// scan for existing networks, displays a list of networks
Serial.println("Scanning available networks. May take some seconds.");
Serial.println(scannerNetworks.readNetworks());
// currently connected carrier
Serial.print("Current carrier: ");
Serial.println(scannerNetworks.getCurrentCarrier());
// returns strength and ber
// signal strength in 0-31 scale. 31 means power > 51dBm
// BER is the Bit Error Rate. 0-7 scale. 99=not detectable
Serial.print("Signal Strength: ");
Serial.print(scannerNetworks.getSignalStrength());
Serial.println(" [0-31]");
}
void test(){
Serial.print("Modem IMEI: ");
IMEI = modemTest.getIMEI();
IMEI.replace("\n","");
if(IMEI != NULL)
Serial.println(IMEI);
}
OUTPUT:
=======
GSM networks scanner
Modem IMEI:
