Chaser lights

This simple routine creates chaser lights using a PIC12f683 microcontroller.

/*
 * File:   ChaserMain.c
 * Author: hmikelson
 *
 * Created on April 26, 2016, 12:49 PM
 * Chaser Lights ON GPIO 0,1,2,4,5
 */

#if defined(__XC)
    #include         /* XC8 General Include File */
#elif defined(HI_TECH_C)
    #include        /* HiTech General Include File */
#endif

#include        /* For uint8_t definition */
#include       /* For true/false definition */

#pragma config MCLRE=OFF,CP=OFF,WDTE=OFF,FOSC=INTOSCIO
#define _XTAL_FREQ 8000000

void init()
{
    //Configure GPIO Port
    ANSEL =  0b00000000;  //Configure all GPIO pins as digital
    TRISIO = 0b110001000;  //Set GP# 1=inputs and 0=outputs
    OPTION_REGbits.nGPPU = 0;
    WPU = 0b00000000;     //Enable weak pullups=1
    //Configuer AD Convertor
    ADCON0 = 0x00;        //AD disabled
    ADRESH = 0x00;        //Init the AD Register
    //Configure Comparator
    CMCON0 = 0xFF;   // Comparator is turned off
    CMCON1 = 0x00;   // Comparator is turned off
    //Interrupt configuration
    INTCON = 0x00;   //Disable all interrupts
}

void main()
{
 init();
 GPIO = 0b00000000;
 while(1)
  {
   //Chaser Lights
     GPIO = 0b00000001;
     __delay_ms(100);
     GPIO = 0b00000010;
     __delay_ms(100);
     GPIO = 0b00000100;
     __delay_ms(100);
     GPIO = 0b00010000;
     __delay_ms(100);
     GPIO = 0b00100000;
     __delay_ms(100);
 }
}