【STM8S】 窗口看门狗

.h文件如下：

#ifndef __WWDG_H

#define __WWDG_H

#include "stm8s.h"

void Delay(); 

void WWDG_Configuration(void) ;

void Refresh_WWDG_Window(void);

#endif

.c文件如下：

#include "wwdg.h"

#include "stm8s_wwdg.h"

#define CounterInit 0x7f

#define window      0x77

void Delay()   //延迟函数

{

    int i,j;

        for(i=0;i<100;i++)

      {

    for(j=0;j<1000;j++);

          }

}

void WWDG_Configuration(void) 

{

    /* WWDG Configuration */

    /* Watchdog Window= 0x7F step to 0x3F step

    = (0x7F-0x3F) * 1 step

    = 64 * 1 step

    = 64 * (12288/2Mhz)

    = 393.216ms

    */

    /* Allowed Window = (0x7F-window) * 1 step

    = (0x7F-0x77) * 1 step

    = 7 * 1 step 

    = 7 * (12288/2Mhz) 

    = 43.008ms 

    */

    /* So the non allowed window starts from 0.0ms to 43.008ms

    and the alowed window starts from 43.008ms to 393.216ms */

    WWDG_Init(CounterInit,window);

}

void Refresh_WWDG_Window(void)//喂狗

{

  u8 CounterValue;

  CounterValue = (u8)(WWDG_GetCounter() & 0x7F);

  if(CounterValue < window)

  {

    WWDG_SetCounter(CounterInit);

  }

}