Arduino Uno + GSM Shield + StarHub Sim Card : Intro

2013101701.c

// import the GSM Library
#include <GSM.h>

// define PIN Number
#define PINNUMBER ""

// initialize the library instance
GSM gsmAccess( true ) ; // true with debug enabled
GSMScanner scannerNetworks ;
GSMModem modemTest ;

// save data variables
String IMEI = "862170010105474" ;

// serial monitor result messages 
String errorText = "ERROR" ;

void setup() {
  
  // initialize serial communications
  Serial.begin( 9600 ) ;
  Serial.println( "GSM networks scanner" ) ;
  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
  Serial.print( "Modem IMEI : " ) ;
  IMEI = modemTest.getIMEI() ;
  IMEI.replace( "\n" , "" ) ;
  if ( IMEI != NULL ) {
    Serial.println( IMEI ) ;
  }
  
  // currently connected carrier
  Serial.print( "Current carrier: " ) ;
  Serial.println( scannerNetworks.getCurrentCarrier() ) ;
  
  // return strength and ber
  // signal strength in 0-31 scale, 31 means power > 51 dBm
  // ber is the bit error rate, 0-7 scale, 99 ~ not detectable
  Serial.print( "Signal strength: " ) ;
  Serial.println( scannerNetworks.getSignalStrength() ) ;

}

void loop() {
  
}