delay.c

来自「PLL的资料文档,包括资料」· C语言 代码 · 共 82 行

/*C**************************************************************************
* NAME:         scheduler.c
*----------------------------------------------------------------------------
* Copyright (c) 2006 Atmel.
*----------------------------------------------------------------------------
* RELEASE:      C51 Sample      
* REVISION:     1.00     
*----------------------------------------------------------------------------
*
*****************************************************************************/
#include "system\reg51.h"
#include "system\compiler.h"
#include "system\config.h"
#include "scheduler.h"                      /* scheduler definition */

/*F**************************************************************************
* NAME: DelayX1ms
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*----------------------------------------------------------------------------
* PURPOSE: 
*   Keyboard task
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void DelayX1ms(Byte count)
{
	Byte i,j;

	for(i=0;i<count;i++)
		for(j=0;j<120;j++)
			;
}

/*F**************************************************************************
* NAME: DelayX1ms
*----------------------------------------------------------------------------
* PARAMS:
*
* return:
*----------------------------------------------------------------------------
* PURPOSE: 
*   Keyboard task
*----------------------------------------------------------------------------
* EXAMPLE:
*----------------------------------------------------------------------------
* NOTE:
*----------------------------------------------------------------------------
* REQUIREMENTS:
*****************************************************************************/
void DelayX10ms(Byte count)
{
	Byte i,j,k;

	for(i=0;i<count;i++)
		for(j=0;j<10;j++)
			for(k=0;k<120;k++)
				;
}

/*
// ***********************************************************************
// Function    : Delay100us
// Description : delay 100 us each time is called
//		 can be modified for different CPU speed
// ***********************************************************************
#pragma NOAREGS
void Delay100us(void)
{
    BYTE data c;
#ifdef CPU_40M
    c = 56;		       // T~=100uS  for 40.5MHZ CPU
#else
#endif
    while (c-- != 0);
}  */