GSMBegin

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GSM : GSM class

begin()

Description

Connects to the GSM network identified on the SIM card.

Syntax

gsm.begin()
gsm.begin(pin)
gsm.begin(pin, restart)
gsm.begin(pin, restart, sync)

Parameters

pin : character array with the PIN to access a SIM card (default = 0)
restart : boolean, determines whether to restart modem or not (default= true)
sync : boolean, synchronous (true, default) or asynchronous (false) mode

Returns

char : 0 if asynchronous. If synchronous, returns status : ERROR, IDLE, CONNECTING, GSM_READY, GPRS_READY, TRANSPARENT_CONNECTED

Example

#include <GSM.h>
#define PINNUMBER "
GSM gsm;
// include a 'true' parameter for debug enabled
void
setup
(
)
{

  // initialize serial communications

  Serial.begin
(
9600
)
;
  // 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
(gsm.begin
(PINNUMBER)
==GSM_READY)

      notConnected =
false
;

    else

    {

      Serial.println
(
"Not connected"
)
;

      delay
(
1000
)
;

    }

  }
  Serial.println
(
"GSM initialized"
)
;


}
void
loop
(
)


{
// once connected do something interesting
}