watchdog.c

meg16 的所有功能实例

/****************************************Copyright (c)**************************************************
**                               ADEmbed Development Co.,LTD.                                    
**                                 http://www.adembed.com
**--------------File Info-------------------------------------------------------------------------------
** File name:			watchdog.c
** Last modified Date:  2008-12-13
** Last Version:		1.0
** Descriptions:		watchdog Test.
** 
**------------------------------------------------------------------------------------------------------
** Created by:			junbolu
** Created date:		2008-12-13
** Version:				1.0
** Descriptions:		
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**
**------------------------------------------------------------------------------------------------------
**ICC-AVR application builder : 2008-12-13
**Target : M16
**Crystal: 7.3728Mhz

**WDP2 WDP1 WDP0 看门狗振荡器周期   VCC = 3.0V 时典型的溢出周期 VCC = 5.0V 时典型的溢出周期
**0    0    0    16K (16,384)       17.1 ms                     16.3 ms
**0    0    1    32K (32,768)       34.3 ms                     32.5 ms
**0    1    0    64K (65,536)       68.5 ms                     65 ms
**0    1    1    128K (131,072)     0.14 s                      0.13 s
**1    0    0    256K (262,144)     0.27 s                      0.26 s
**1    0    1    512K (524,288)     0.55 s                      0.52 s
**1    1    0    1,024K (1,048,576) 1.1 s                       1.0 s
**1    1    1    2,048K (2,097,152) 2.2 s                       2.1 s
*******************************************************************************************************/
#include <iom16v.h>
#include <macros.h>

void main(void)
 {
 WDTCR|=(1<<WDP1)|(1<<WDP2)|(1<<WDE);        //看门狗定时器预分频器设置
 WDTCR|=(1<<WDP0);							 //使能看门狗
 
 while(1)
     {
	 _WDR();								 //喂狗
	 }
 }