#include <SoftwareSerial.h>
//#include <stdlib.h>
#define DELA 1200  // Time between message sends.
SoftwareSerial RFID(2, 3); // RX and TX
const int ledPin = 13;
int i;

void setup()
{
  RFID.begin(9600);    // start serial to RFID reader
  Serial.begin(9600);  // start serial to PC
     pinMode(ledPin, OUTPUT); // Initialize pin as output.
}

void loop()
{
  if (RFID.available() > 0)
  {
     i = RFID.read();
     Serial.print(i, DEC);
     Serial.print(" ");
        if ( Serial.available() )
   { light(Serial.read() - '0'); } // How many positions past ASCII 0?
   delay (DELA);
  }
}

void light(int n) {
  for (int i = 0; i < n; i++)
  {
  digitalWrite(ledPin, HIGH);   // Turn the LED on.
  delay(DSHORT);
  digitalWrite(ledPin, LOW);   // Turn the LED off.
  delay(DSHORT);               // Wait.
  }
}