Execute ISR to blink LED 3 times using TC1 interrupt (MLP=Do Nothing) (ISR=Blink Built In LED 3 times after 1 second interval)

Execute ISR to blink LED 3 times using TC1 interrupt (MLP=Do Nothing) (ISR=Blink Built In LED 3 times after 1 second interval)

#include <Arduino.h>
void setup()
{
    pinMode(13,OUTPUT);
    digitalWrite(13,LOW);


TCCR1A=0x00; /// Timer 1 normal mode
TCCR1B=0x00; ///Timer 1 off


TCNT1=0xC2F7; /// Timer 1 preset value

bitWrite(SREG,7,1); /// Enable global interrupt
bitWrite(TIMSK1,0,1); /// Enable TIMER1_OVF interrupt

bitWrite(TIFR1,2,1); /// TOV1 Clear

TCCR1B=0x05; /// Timer 1 ON

}

ISR(TIMER1_OVF_vect)
{
interrupts(); ///Enable Global Interrupt again at ISR

TCCR1B=0x00; /// Timer 1 off
TCNT1=0xC2F7; ///Preset value for 1 second

    for (int i=0;i<=2;i++)
    {
        digitalWrite(13,LOW);
        delay(500);
        digitalWrite(13,HIGH);
        delay(500);
        digitalWrite(13,LOW);
    }

bitWrite(TIFR1,2,1); /// TOV1 Clear
TCCR1B=0x05; /// Timer 1 ON
}


void loop()

{


}