wait.c

在飞思卡尔MC9S08GB60单片机环境下实现了无线监控

#include <hidef.h>
#include "device_header.h"
#include "wait.h"
#include "main.h"

#define BUS_SPEED 4000000 /* Hz */
#define CONST (BUS_SPEED / 1000 /*ms*/ / 8 /* loop cycles*/ )
void Wait1ms(void){
   asm {  
     PSHX
     PSHH
     LDHX #CONST
     loop:
     AIX #-1  ;2 cycles
     CPHX #0  ;3 cycles
     BNE loop ;3 cycles              
     PULH
     PULX
   }     
}


void DelayMS(UINT16 time)
{
    UINT16 i = 0;
    for(;time>0;time--) 
    {
        Wait1ms();
        i++;
        if(i==500)
         {
            i=0;
            Feed_HardDog();//喂硬狗
         }
    }
}

void DelayS(UINT8 time)
{	 
    UINT8 i,j;
    for(;time>0;time--) 
    {
       for(j=0;j<4;j++)
       { 
        for(i=0;i<250;i++) 
        {          
          Wait1ms();
        }
       }
    }
}