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/*
This example enables you to change or remove the PIN number of
a SIM card inserted into a GSM shield.
Circuit:
* GSM shield
* SIM card
Created 12 Jun 2012
by David del Peral
This example code is part of the public domain
http://arduino.cc/en/Tutorial/GSMToolsPinManagement
*/
// libraries
#include <GSM.h>
// pin manager object
GSMPIN PINManager;
// save input in serial by user
String user_input = "";
// authenticated with PIN code
boolean auth = false;
// serial monitor result messages
String oktext = "OK";
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("Change PIN example\n");
PINManager.begin();
// check if the SIM have pin lock
while(!auth){
int pin_query = PINManager.isPIN();
if(pin_query == 1)
{
// if SIM is locked, enter PIN code
Serial.print("Enter PIN code: ");
user_input = readSerial();
// check PIN code
if(PINManager.checkPIN(user_input) == 0)
{
auth = true;
PINManager.setPINUsed(true);
Serial.println(oktext);
}
else
{
// if PIN code was incorrected
Serial.println("Incorrect PIN. Remember that you have 3 opportunities.");
}
}
else if(pin_query == -1)
{
// PIN code is locked, user must enter PUK code
Serial.println("PIN locked. Enter PUK code: ");
String puk = readSerial();
Serial.print("Now, enter a new PIN code: ");
user_input = readSerial();
// check PUK code
if(PINManager.checkPUK(puk, user_input) == 0)
{
auth = true;
PINManager.setPINUsed(true);
Serial.println(oktext);
}
else
{
// if PUK o the new PIN are incorrect
Serial.println("Incorrect PUK or invalid new PIN. Try again!.");
}
}
else if(pin_query == -2)
{
// the worst case, PIN and PUK are locked
Serial.println("PIN & PUK locked. Use PIN2/PUK2 in a mobile phone.");
while(true);
}
else
{
// SIM does not requires authetication
Serial.println("No pin necessary.");
auth = true;
}
}
// start GSM shield
Serial.print("Checking register in GSM network...");
if(PINManager.checkReg() == 0)
Serial.println(oktext);
// if you are connect by roaming
else if(PINManager.checkReg() == 1)
Serial.println("ROAMING " + oktext);
else
{
// error connection
Serial.println(errortext);
while(true);
}
}
void loop()
{
// Function loop implements pin management user menu
// Only if you SIM use pin lock, you can change PIN code
// user_op variables save user option
Serial.println("Choose an option:\n1 - On/Off PIN.");
if(PINManager.getPINUsed())
Serial.println("2 - Change PIN.");
String user_op = readSerial();
if(user_op == "1")
{
Serial.println("Enter your PIN code:");
user_input = readSerial();
// activate/deactivate PIN lock
PINManager.switchPIN(user_input);
}
else if(user_op == "2" & PINManager.getPINUsed())
{
Serial.println("Enter your actual PIN code:");
String oldPIN = readSerial();
Serial.println("Now, enter your new PIN code:");
String newPIN = readSerial();
// change PIN
PINManager.changePIN(oldPIN, newPIN);
}
else
{
Serial.println("Incorrect option. Try again!.");
}
delay(1000);
}
/*
Read input serial
*/
String readSerial()
{
String text = "";
while(1)
{
while (Serial.available() > 0)
{
char inChar = Serial.read();
if (inChar == '\n')
{
return text;
}
if(inChar!='\r')
text += inChar;
}
}
}
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