WDT看门狗模块(C51)

#include

#include"WDT.h"

void wdt_disable(void)

{

WDT=0x00;

}

void wdt_reset(void)

{

WDT|=(1<<4);

}

void wdt_enable(uchar timer)

{

WDT|=(1<<5);

if((timer>=0)&&(timer<=7))

{

switch(timer)

{

case 0:break;

case 1:WDT|=(1<<0);break;

case 2:WDT|=(1<<1);break;

case 3:WDT|=(1<<1)|(1<<0);break;

case 4:WDT|=(1<<2);break;

case 5:WDT|=(1<<2)|(1<<0);break;

case 6:WDT|=(1<<2)|(1<<1);break;

case 7:WDT|=(1<<2)|(1<<1)|(1<<0);break; }

}

}

#ifndef _WDT_H_

#define _WDT_H_

#include

#define uchar unsigned char

#define uint unsigned int

#define WDT_39ms 0

#define WDT_79ms 1

#define WDT_157ms 2

#define WDT_315ms 3

#define WDT_629ms 4

#define WDT_1ms 5

#define WDT_3s 6

#define WDT_5s 7

sfr WDT=0xe1;

void wdt_enable(uchar timer); void wdt_disable(void);

void wdt_reset(void);

#endif