示例#1
0
void SystemInit()
{    
  init_system_clock();		/* SystemCoreClock will be set here */
  
  /* SysTick is defined in core_cm0.h */
  SysTick->LOAD = (SystemCoreClock/1000UL*(unsigned long)SYS_TICK_PERIOD_IN_MS) - 1;
  SysTick->VAL = 0;
  SysTick->CTRL = 7;   /* enable, generate interrupt (SysTick_Handler), do not divide by 2 */
}
示例#2
0
文件: kernel.c 项目: raywill/maray
void osmain( void )
{
	int i;
	int j=0;
	char nb[10];
	
	char tmbuf[30];
	
	
	/* ini screen first,so that we can output info as early as possible */
	init_tty();	/*	initialize the screen*/	
   	kprintf( "TTY initialized\n" );
	
	/* init both physical and virtual memory */
	init_mm();
   	kprintf( "Memory manager initialized\n" );		  	
	
	init_irq();	/*initialize irq,with all interrupte disabled.*/
   	kprintf( "IRQ initialized\n" );
   
	kprintf("\nHello\n");
	install_syscall();
	
	init_all_tasks();

	init_kb();	/* set keyboard IRQ,and enable it */
	kprintf( "\nKeyboard initialized\n" );
 
	init_timer(); /* initialize time, enable timer irq */
	/* init_system_clock(&real_tm); */
	kprintf( "\nTimer initialized\n");
	init_system_clock(&start_tm);
	kprintf("\nSystem start time is \n");
	kprintf(timetostr(&start_tm, tmbuf));

	kprintf("\nStarting first process....\n");
	
	start_first_process();

	kprintf( "\nNow I am doing a loop ,waiting for interrupt :)\n" );
	
	while(1);
	halt();
}
示例#3
0
void system_init(void)
{
    SCB_EnableICache();
    SCB_EnableDCache();

    DBG_INIT();

    init_system_clock();

    HAL_Init();

    BSP_SDRAM_Init();
    BSP_LED_Init(LED1);
    BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);

    MX_FATFS_Init();

    FRESULT res = f_mount(&ctx.fs, SD_Path, 0);
    ASSERT_WARN(res == FR_OK);

    gui_init();
}
示例#4
0
文件: timer.c 项目: raywill/maray
void enable_timer()
{
	init_system_clock(&real_tm);
	enable_irq(TIMER_IRQ);
	timefly = last_timefly = 0;
}