PIC gone hang when connected to a current sensor

int measure(unsigned char channel)  	//fn to measure current sensor o/p
{ 
	int tmp1=0;
	ADCON0=channel;
	__delay_ms(10);
	GO=1;
	while(GO);
	tmp1=ADRESH<<8|ADRESL;
	return(tmp1);
}

void display(unsigned int b)            //to display adc result in serial window
{	int arr[4]={0,0,0,0},i=0;
	while(b!=0)
	{	arr[i++]=b%10;
		b=b/10;
	}
	for(i=3;i>=0;i--)
	{	TXREG=arr[i]+'0';
		while(TRMT==0);
	}
	TXREG='\r';
	while(TRMT==0);
	__delay_ms(200);
}


void interrupt isr()                    //isr for taking units which is connected to RB0 of PIC
{
	 if(INTF)
 	 {
	 	 INTF=0;
	  	count++;
		  
	  	eeprom_write(0,count&0x00ff);
		eeprom_write(1,((count>>8)&0x00ff));
		  
	  	if(count>5) 
		{
			unit++; count=0;
	  		eeprom_write(2,unit&0x00ff);
			eeprom_write(3,((unit>>8)&0x00ff));
		}
		status=1;
	}
}