/* This function will init pit for system ticks  */
static void rt_hw_timer_init()
/* This function will init pit for system ticks  */
static void rt_hw_timer_init()
{
    hw_timer0_init();
    rt_hw_interrupt_install(INT_TIMER0, rt_systick_handler, RT_NULL, "SysTick");
    rt_hw_interrupt_umask(INT_TIMER0);
}