//GPIO (DIO)
#define RCGGPIO  *((volatile unsigned long *)(0x400FE608))
#define GPIODEN  *((volatile unsigned long *)(0x4002551C))
#define GPIOAFSEL *((volatile unsigned long *)(0x40025420))
#define GPIODIR *((volatile unsigned long *)(0x40025400))
#define GPIODATA *((volatile unsigned long *)(0x400253fc))
#define GPIOLOCK *((volatile unsigned long *)(0x40025520))
#define GPIOCR *((volatile unsigned long *)(0x40025524))
#define GPIOPUR *((volatile unsigned long *)(0x40025510))

//Timer (GPT)
#define RCGCTIMER *((volatile unsigned long *)(0x400FE604))
#define GPTMCTL *((volatile unsigned long *)(0x4003000C))
#define GPTMCFG *((volatile unsigned long *)(0x40030000))
#define GPTMTAMR *((volatile unsigned long *)(0x40030004))
#define GPTMTAILR *((volatile unsigned long *)(0x40030028))
#define GPTMRIS *((volatile unsigned long *)(0x4003001C))
#define GPTMICR *((volatile unsigned long *)(0x40030024))

//BitWise
#define check_bit(b,p) \
(b &(1<<p))>>p
//1&(b>>p);
#define set_bit(b,p) \
b = b|(1<<p);
#define clear_bit(b,p) \
b = b&~(1<<p);

int main()
{

  /*RCGGPIO=0x20;
  GPIODEN=0x02;
  GPIOAFSEL=0x0;
  GPIODIR=0x02;
  GPIODATA=0x02;*/

 //DIO
  RCGGPIO=0x20;
  GPIOLOCK=0x4C4F434B;
  GPIOCR=0x01;
  GPIOAFSEL=0x00;
  GPIODEN=0x1F;
  GPIOPUR=0x11;
  GPIODIR=0x0E;

 //GPT
  RCGCTIMER=0x01;
  GPTMCTL=0x00;
  GPTMCFG=0x00;
  GPTMTAMR=0x02;
  //GPTMTAILR=16000000; //second
   GPTMTAILR=10000000;
  GPTMCTL=0x01;

  char flag=0;
  while(1)
  {

  if (check_bit(GPTMRIS,0)==1&&flag==0) //green
  {
    GPIODATA=0x08;
    GPTMICR=0x01;
    flag++;


  }
  else if (check_bit(GPTMRIS,0)==1&&flag==1) //blue
  {
    GPIODATA=0x04;
    GPTMICR=0x01;
    flag++;
  }
  else if (check_bit(GPTMRIS,0)==1&&flag==2) //red
  {
    GPIODATA=0x02;
    GPTMICR=0x01;
    flag++;
  }
  else if (check_bit(GPTMRIS,0)==1&&flag==3) //red blue (magenta)
  {
    GPIODATA=0x06;
    GPTMICR=0x01;
    flag++;
  }
  else if (check_bit(GPTMRIS,0)==1&&flag==4) //red green (yellow)
  {
    GPIODATA=0x0A;
    GPTMICR=0x01;
    flag++;
  }
  else if (check_bit(GPTMRIS,0)==1&&flag==5) //green blue (cyan)
  {
    GPIODATA=0x0C;
    GPTMICR=0x01;
    flag++;
  }
  else if (check_bit(GPTMRIS,0)==1&&flag==6) //green blue red (white)
  {
    GPIODATA=0x0E;
    GPTMICR=0x01;
    flag=0;
  }
  }
}