Kirim SMS *gsm shield

// LINE: bambangSud twitter: @bambangSud WA: +62811234123
SoftwareSerial XbeeSerial = SoftwareSerial(2, 3);
SoftwareSerial gsm(10, 11);

String inchar;
char c;

int ledPin = 8;
int kirimSMS=0;// flag

void setup() {
gsm.begin(19200); //gsm baudrate
Serial.begin(9600); //connection to host computer
Serial.println("Sistem deteksi posisi berjalan...");
XbeeSerial.begin(19200); //connection to Xbee shield
pinMode(ledPin, OUTPUT);
}

void loop()
{

bacasms();
if(kirimSMS==1){ // hanya kirim SMS jika ....
	SendSMS();
}


}
//--------------------------------------------------------------------------------------------------------------------
void SendSMS()
{
Serial.println ("Send SMS started!");
gsm.print("AT+CMGF=1\r"); //Because we want to send the SMS in text mode
delay(100);
gsm.println("AT + CMGS = \"+6282137736098\""); //This number will recieve the text message
delay(100);
char pesan[160];
readSerial(pesan);
gsm.println(pesan); //SMSTEXT = constant
delay(100);
gsm.println((char)26); //the ASCII code of the ctrl+z is 26
delay(100);
gsm.println();
Serial.println ("Send SMS finished!");
}

int readSerial(char result[])
{
int i = 0;
while(1)
{
while (XbeeSerial.available() > 0)
{
char inChar = XbeeSerial.read();
if (inChar == '\n')
{
result[i] = '\0';
XbeeSerial.flush();
return 0;
}
if(inChar!='\r')
{
result[i] = inChar;
i++;
}
if(inChar ==',')
{
result[i] = inChar;
result[i] = '\n';
i++;
}
}
}
}

void bacasms()
{
if(gsm.available() >0)
{
c = gsm.read();
inchar+=c;
if(inchar.indexOf("get")>0)
{
digitalWrite(ledPin, HIGH);
kirimSMS=1;
}
else if (inchar.indexOf("get")>0)
{
digitalWrite(ledPin, LOW);
kirimSMS=0; // supaya tidak kirim SMS
}


}
}