PIC12629/675 Sleep Mode wake and blink led

/*
 * File:   led_sleep_pic12f675.c
 * Author: Yogesh Shende
 * Created on April 11, 2021, 11:46 AM
 */


// PIC12F675 Configuration Bit Settings
// 'C' source line config statements
// CONFIG
#pragma config FOSC = INTRCIO   // Oscillator Selection bits (INTOSC oscillator: I/O function on GP4/OSC2/CLKOUT pin, I/O function on GP5/OSC1/CLKIN)
#pragma config WDTE = OFF        // Watchdog Timer Enable bit (WDT enabled)
#pragma config PWRTE = OFF       // Power-Up Timer Enable bit (PWRT enabled)
#pragma config MCLRE = OFF      // GP3/MCLR pin function select (GP3/MCLR pin function is digital I/O, MCLR internally tied to VDD)
#pragma config BOREN = OFF       // Brown-out Detect Enable bit (BOD enabled)
#pragma config CP = OFF         // Code Protection bit (Program Memory code protection is disabled)
#pragma config CPD = OFF        // Data Code Protection bit (Data memory code protection is disabled)

// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.

#include <xc.h>
#include <stdint.h>
#include<stdlib.h>


#define l1  GP0   // LED1
#define l2  GP1   // LED2
//#define sw  GP2   // sw1
#define l3  GP4   // LED4
#define l4  GP5   // LED5
#define sw  GP3   // switch 1 
#define _XTAL_FREQ 4000000
unsigned char count=0,i;
volatile unsigned int flag=0;
void ledloop1(void);
void ledloop2(void);
void ledloop3(void);


void main(void)
   {
    ANSEL  = 0x00;       // Set ports as digital I/O, not analog input
    ADCON0 = 0x00;         // Shut off the A/D Converter
    CMCON  = 0x07;         // Shut off the Comparator
    VRCON  = 0x00;         // Shut off the Voltage Reference
    TRISIO = 0b11001000;       // GP3 input, rest all output
    GPIO = 0x00;       // Make all pins 0
    WPU=0; //WEAK PULL-UP REGISTER 0
    //INTCONbits.INTF=0;    /* Clear INT0 interrupt flag */
    //INTCONbits.INTE=0;    /* Enable INTOIF interrupt */
    INTCONbits.GIE=1;        /* Enable global interrupt */
    INTCONbits.GPIE=1;
    IOC3=1; //INTERRUPT-ON-CHANGE GPIO REGISTER on GP3 pin 
   while(1)
   {
       {
       if(sw==0&&flag==0) //Power On and  Switch is release   SW=0 - need blink led and sleep  -  -if(sw==0&&GPIF==0)
         {
           __delay_ms(5);
       
           while(sw==0&&GPIF==0)
           {
           flag=0;
           }
       }
       else if (sw==1&&flag==0&&GPIF==1) // Power on and ( 1st )switch pressed  SW=1 - LED blink and sleep ())
           {__delay_ms(5);
               while(sw==1&&flag==0&&GPIF==1)
               {
               flag=1;
               }
           }
       else if (sw==1&&flag==1&&GPIF==1) // Switch Sw=1 (2nd time ) Led blink continue  
           {__delay_ms(5);
           while(sw==1&&flag==1&&GPIF==1)
           {
              
               flag=2;
           }
           }
       else if(sw==0&&flag==2)// 2nd switch sw=0 led blink and sleep
           {
               __delay_ms(5);
               if(flag==2)
               { 
                  flag=0;
                    }
                }
           }
       
    switch (flag)
    {
        case 0: // 1st step if switch sw=0 or sw=1 led blink and sleep 
        {    
         ledloop1();    
          __delay_ms(10);
          GPIF=0;
          SLEEP();
        }
        break;
        case 1: //2nd step if switch sw=0 or sw=1 led blink and sleep 
        {
          ledloop3();
          __delay_ms(10);
           GPIF=0;
           SLEEP();
        }
        break;
        case 2: //3rd step if sw pressed 2nd time the operation run continue until sw=0
            if(sw)
               {
                 l3=1; // Led 3 Continue on until we release sw=0;
                    for (count=0; count<10; count++)
                     {
                         ledloop2();
                         __delay_ms(50);    // delay for flash
                         
                     }
                 }
            break;
        }
    }
}   
   

    
void ledloop1(void)
{
    for(i=0;i<10;i++)
    {
    l1=~l1;
    __delay_ms(60);
    }
}
void ledloop2(void)
{
    while(1)
    {
  for(i=0;i<10;i++)
    {
    l2=~l2;
    __delay_ms(60);
    }
}
}
void ledloop3(void)
{
    for(i=0;i<10;i++)
    {
    l4=~l4;
    __delay_ms(60);
    }
}