#include "lm3s9b92.h"

int main()
{
  unsigned long ulValue;
  unsigned long ulLoop;
  ulValue = SYSCTL_RCC_R & ~(0x00400800);
  SYSCTL_RCC_R = ulValue | 0x00000800;
  ulValue = SYSCTL_RCC_R & ~(0x000027F0);
  SYSCTL_RCC_R = ulValue | 0x00000540;
  ulValue = SYSCTL_RCC_R & ~(0x07C00000);
  SYSCTL_RCC_R = ulValue | 0x01C00000;
  for(ulLoop = 32768; ulLoop > 0; ulLoop--)
  {
    ulValue = SYSCTL_RIS_R & 0x0040;
    if(ulValue){ break;  }
  }
 
  ulValue = SYSCTL_RCC_R & ~(0x00000800);
  SYSCTL_RCC_R = ulValue | 0x00000000;
  ulValue = SYSCTL_RCGC2_R & ~(0x102);
  SYSCTL_RCGC2_R = ulValue | 0x102; 
  __asm(" nop ");
  __asm(" nop ");
  __asm(" nop ");
  ulValue = GPIO_PORTB_AFSEL_R & ~(0x01);
  GPIO_PORTB_AFSEL_R = ulValue | 0x01;
  ulValue = GPIO_PORTJ_AFSEL_R & ~(0x01);
  GPIO_PORTJ_AFSEL_R = ulValue | 0x00;
  ulValue = GPIO_PORTB_PCTL_R & ~(0x0F);
  GPIO_PORTB_PCTL_R = ulValue | 0x01;
  ulValue = GPIO_PORTB_DEN_R & ~(0x01);
  GPIO_PORTB_DEN_R = ulValue | 0x01;
  ulValue = GPIO_PORTJ_DEN_R & ~(0x01);
  GPIO_PORTJ_DEN_R = ulValue | 0x01;
  ulValue = GPIO_PORTJ_DIR_R & ~(0x01);
  GPIO_PORTJ_DIR_R = ulValue | 0x01;
  ulValue = GPIO_PORTJ_DATA_R & ~(0x01);
  GPIO_PORTJ_DATA_R = ulValue | 0x00;
  ulValue = SYSCTL_RCGC1_R & ~(0x10000);
  SYSCTL_RCGC1_R = ulValue | 0x10000;
  __asm(" nop ");
  __asm(" nop ");
  __asm(" nop ");
  ulValue = TIMER0_CTL_R & ~(0x01);
  TIMER0_CTL_R = ulValue | 0x00;
  ulValue = TIMER0_CFG_R & ~(0x07);
  TIMER0_CFG_R = ulValue | 0x00;
  ulValue = TIMER0_TAMR_R & ~(0xFF);
  TIMER0_TAMR_R = ulValue | 0x02;
  ulValue = TIMER0_TAILR_R & ~(0xFFFFFFFF);
  TIMER0_TAILR_R = ulValue | 0x2FAF080;
  ulValue = TIMER0_CTL_R & ~(0x01);
  TIMER0_CTL_R = ulValue | 0x01;
  while(1)
  {
    ulValue = TIMER0_RIS_R & 0x01;
    if(ulValue)
      {
        ulValue = GPIO_PORTJ_DATA_R &= ~(0x01);
        GPIO_PORTJ_DATA_R = ulValue | 0x00;
        for(ulLoop = 0; ulLoop < 350000; ulLoop++);
        ulValue = GPIO_PORTJ_DATA_R & ~(0x01);
        GPIO_PORTJ_DATA_R = ulValue | 0x01;
        ulValue = TIMER0_ICR_R & ~(0x01);
        TIMER0_ICR_R = ulValue | 0x01;
      }
  } //end while
} //end main