eeprom._c

meg16 的所有功能实例

/****************************************Copyright (c)**************************************************
**                               ADEmbed Development Co.,LTD.                                    
**                                 http://www.adembed.com
**--------------File Info-------------------------------------------------------------------------------
** File name:			EEPROM.c
** Last modified Date:  2008-12-13
** Last Version:		1.0
** Descriptions:		IC inside EEPROM write and read 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
**PA0~PA7口接LED的段码
**PB0~PB3口接LED的位选
**描述：这是一个LED数码管测试程序。采用共阴LED数码管，动态显示固定数字2009。
**      没有一点多余的代码，清晰明了。
**
**涉及知识点：
**          DO输出
**          for 循环的应用
**          数组的简单应用
*******************************************************************************************************/
#include <iom16v.h>
#include <macros.h>
#include "define.h"
#include "EEPROM.h"


void main(void)
{
 EEPROM_write(0x01,0x66);          //在地址0x01写入0x66
 EEPROM_read(0x01);				   //读取地址0x01的数据
 while(1);
}

//=======================================================================
void EEPROM_write(uint16 address,uint8 data)
{
 SREG&=~0x80;
 while(EECR&(1<<EEWE))
  {
  }
 EEAR=address;
 EEDR=data;
 EECR|=(1<<EEMWE);
 EECR|=(1<<EEWE);
 SREG|=0x80;
}

//=======================================================================
uint8 EEPROM_read(uint16 address)
{
 SREG&=~0x80;
 while(EECR&(1<<EEWE))
  {
  }
 EEAR=address;
 EECR|=(1<<EERE);
 SREG|=0x80;
 return EEDR;
}