flash.h

在MSP430下操作IC卡以及FLASH以及ADS1242

/*
* copyright (c) 兰州瑞德高科技有限公司电专项目组
* all rights reserved.

* 文件名称: flash.c
* 摘    要: flash的读写操作函数

* 当前版本: v1.0
* 作    者: 杨晓卫
* 完成日期: 2004.7.29
*/
#ifndef FLASH_H
#define FLASH_H

#include <msp430x14x.h>
#include "predef.h"

float *segAPoint;
uchar *segBPoint;

void SegAWrite(float sp1,float sp2,float sp3,float sp4);
float SegARead(int addr);

void SegBWrite(uchar *buf,uchar len);
int SegBRead(int addr,uchar *buf,uchar len);

void SegAWrite(float sp1,float sp2,float sp3,float sp4)
{

segAPoint=(float *)0x1080;

FCTL1=FWKEY+ERASE;
FCTL3=FWKEY;

*segAPoint=0;

FCTL1=FWKEY+WRT;

*segAPoint++=0x1234;
*segAPoint++=sp1;
*segAPoint++=sp2;
*segAPoint++=sp3;
*segAPoint++=sp4;

FCTL1=FWKEY;
FCTL3=FWKEY+LOCK;
}

float SegARead(int addr)
{
  segAPoint=(float *)addr;
  return (*segAPoint);
}

void SegBWrite(uchar *buf,uchar len)
{
  int i;
  
  segBPoint=(uchar *)0x1000;
  
  FCTL1=FWKEY+ERASE;
  FCTL3=FWKEY;
  
  *segBPoint=0;

  FCTL1=FWKEY+WRT;

  for(i=0;i<len;i++)
  {
  *segBPoint++=*buf++;
  }
    
  FCTL1=FWKEY;
  FCTL3=FWKEY+LOCK;
}

int SegBRead(int addr,uchar *buf,uchar len)
{
 int i;
 segBPoint=(uchar *)addr ;
 for(i=0;i<len;i++)
 {
 *buf++=*segBPoint++;
 }
 
 return 1;
}

#endif