testwdtc.nc

tinyos2.0版本驱动

module TestWDTC 
{	
  uses interface Boot;
  uses interface Leds;
  uses interface Timer<TMilli> as Timer;
    //uses interface StdControl as TimerControl;
    //uses interface HPLWdtC;
  uses interface StdControl as WDTControl;
  uses interface WDT;
}

implementation 
{  
  enum
  {
	mode = WDTTEST,
  };
    
  uint8_t firstTime;
  
  event void Boot.booted()
  {
	firstTime = 1;
    call WDTControl.start();
    call Leds.led0On();//red on
    call Leds.led1On();//green on
    if (mode == 1 || mode ==2) 
	{
	  call Timer.startPeriodic(3000);
	}
	if(mode == 0) 
	{
	  call Timer.startPeriodic(3000);//HW WDT is 1S, it's better start Timer at periodic >1000ms @lzm
	}
  }
  
    task void crashMote()//和变量一样，task也要先声明定义再使用 @lzm
	{
	  call Leds.led2On();
	  
	  while (1) 
	  {
    	cli(); 
    	
    	WDTCSR |= (1<<WDE) | (0<<WDIE);
    	
  	    wdt_enable(0); 
  	    
  	    while (1) 
  	    { 
  		   __asm__ __volatile__("nop" "\n\t" ::);
  	    } 
  	    
  	    //仅cli,wdtcsr,__asm,:亮，灭
  	    //仅wdt_enable,：亮，不灭
  	    //全部,:闪，灭，不能重启
  	    //mica2，注释while时led2亮，2s后灭；不注释时马上就灭，可见不注释时在mica和imote上的动作一样，但是可以重启。
	  }
	  
    }
  
  event void Timer.fired()
  {
    call Leds.led1Toggle();//green Toggle
    //call WDT.start(5000);    
    
    if (firstTime) 
	{
	  firstTime = 0;
	  call WDT.start(1000);
	} 
	 else 
	{
	  call WDT.reset();
	}
	
	 if (mode == 2) 
	{
	  post crashMote();
	}
	
	
		//call WDTControl.stop();
  }



//mode0：节点启动，led0,1点亮，timer周期3s，timer fired时led1toggle，WDT设为5s，
//mode1: 节点启动，led0,1点亮，timer 7s后启动一次，led1toggle，再过5s节点reset，
//mode2: 节点启动，led0,1点亮，timer周期3s，timer fired时led1toggle，crashmote, led2点亮，5s后节点reset
//timer > WDT的情况

}