Javascript GSM with mass callbacks for Espruino

gistfile1.js

var cmd="";
var global_response=0;
var answer="OK";




//Function handles data coming in from Serial.
Serial4.on('data',function (data) {
  if(cmd.indexOf(answer) > 0){
    console.log(cmd);
    cmd="";
    global_response=1;
  }
  else
  {
    cmd+=data;
  }
});


//Function handles sending AT commands to GSM device.
function Send_Command(command,time,caller){
  var AT =  setInterval(function (f) { Serial4.write(command); }, time);
  var timey = setInterval(function(){
    if(global_response==1){
      clearInterval(AT);
      global_response=0;
      clearInterval(timey);
      caller();
    }
  },300);
}


//Start the GSM Module
function Start_Gsm() {
  answer="OK";
  console.log("GSM Starting..");
  pinMode(C0,"output");
  digitalPulse(C0,1,2000);
  Send_Command("AT\r\n",500,function(){Set_SMS_Mode();
                                       });
}

function Stop_GSM() {
  pinMode(C0,"output");
  digitalPulse(C0,1,2000);
   console.log("GSM Stopped...");
}

//Set the SMS Mode
function Set_SMS_Mode() {
  answer="OK";
  console.log("Setting SMS Mode..");
  Send_Command("AT+CMGF=1\r\n",1000,function(){Set_SMS_Number();});
}


//Set the SMS number to send text message to
function Set_SMS_Number() {
  answer=">";
  console.log("Setting Phone Number.."); 
  Send_Command('AT+CMGS=\"INSERT A NUMBER HERE IN 44 for uk format\"\r',1000,function(){Send_SMS();});
}


//Send the text message
function Send_SMS(){
  console.log("Send Message");
  answer="OK";
  Send_Command("testing\x1A\r",3000,function(){Stop_GSM();});
}


//Set up the Serial port for the GSM
Serial4.setup(9600,{rx:C11,tx:C10});
Start_Gsm();