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標(biāo)題: eeprom的讀寫 [打印本頁]

作者: llliiixxx 時間: 2018-7-27 19:12
標(biāo)題: eeprom的讀寫
#include  "reg51.h"
#include  "intrins.h"
#include  "stdio.h"
typedef unsigned char BYTE;
typedef unsigned int WORD;

# define char unsigned char
#define int unsigned int
sfr WDT_CONTR=0xc1;
sfr IAP_DATA=0xC2;
sfr IAP_ADDRH=0xC3;
sfr IAP_ADDRL=0xC4;
sfr IAP_CMD=0xC5;
sfr IAP_TRIG=0xC6;
sfr IAP_CONTR=0xC7;
sfr AUXR=0x8E;
sfr T2H=0xD6;
sfr T2L=0xD7;

#define  CMD_IDLE 0
#define  CMD_READ 1
#define  CMD_PROGRAM 2
#define  CMD_ERASE 3
#define  ENABLE_IAP 0x83
#define  IAP_ADDRESS 0x0400
sbit  ssa=P3^6;
/*
sbit  sa=P0^0;
sbit  sb=P0^1;
sbit  sc=P0^2;
sbit  sd=P0^3;
sbit  se=P0^4;
sbit  sf=P0^5;
sbit  sg=P0^6;
sbit  sh=P0^7;
sbit  s1=P1^0;
sbit  s2=P1^1;
sbit  s3=P1^2;
sbit  s4=P1^3;
sbit  s5=P1^4;

   */
char dat,ia,ib,ka,kb,kc,ja,jb,jc,jd,cj,dj;
int  Addr,i,nn,oo,pp;
unsigned long mm,ma,je,jf,fn,ff0;
float tt0, t0pl,tnpl,tn;
char data  dis[8]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
char  dis_7[17]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0x0F8,0x80,0x90,0x88,0x83,0xA7,0xA1,0x86,0x8E,0xFF};
char  scan_con[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
char data  sd[5]={0x00,0x00,0x00,0x00,0x00};
char data  hd[9]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};

void IapIdle()
{
   IAP_CONTR=0;
   IAP_CMD=0;
   IAP_TRIG=0;
   IAP_ADDRH=0x80;
   IAP_ADDRL=0;
}

BYTE  IapReadByte(Addr)    //讀一字節(jié)
  {

IAP_CONTR=ENABLE_IAP;
IAP_CMD=CMD_READ;
IAP_ADDRL=Addr;
IAP_ADDRH=Addr>>8;
IAP_TRIG=0x5a;
IAP_TRIG=0xa5;
_nop_();
dat=IAP_DATA;
IapIdle();
return dat;
  }
void IapProgramByte( Addr, dat) //寫一字節(jié)

{
   IAP_CONTR=ENABLE_IAP;
   IAP_CMD=CMD_PROGRAM;
   IAP_ADDRL=Addr;
IAP_ADDRH=Addr>>8;
IAP_DATA=dat;
IAP_TRIG=0x5a;
IAP_TRIG=0xa5;
_nop_();
IapIdle();
}
void IapEraseSector(Addr) //扇區(qū)擦除
{
   IAP_CONTR=ENABLE_IAP;
   IAP_CMD=CMD_ERASE;
   IAP_ADDRL=Addr;
IAP_ADDRH=Addr>>8;
IAP_TRIG=0x5a;
IAP_TRIG=0xa5;
_nop_();
IapIdle();

}

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