e2prom.c

KEILC RTX51tiny开发的程序

#include <STDIO.H>
#include <STC12C5410AD.H>

#define cmd_E2PROM_Standby 0x00           //E2PROM待机模式 
#define cmd_E2PROM_Read 0x01          //读取E2PROM数据 
#define cmd_E2PROM_Write 0x02       //对E2PROM进行写操作 
#define cmd_E2PROM_Erase 0x03       //对E2PROM扇区进行擦除 
#define con_ISP_Enable 0x8C    //E2PROM控制寄存器使能常数(根据晶振进行设置) 
#define con_ISP_Disable 0x00    //E2PROM控制寄存器关闭常数 



//函数声明 
void E2PROM_Close();   //关闭E2PROM 
unsigned char E2PROM_Read(unsigned char E2addrH,unsigned char E2addrL);  //读E2PROM 
void E2PROM_Write(unsigned char E2addrH,unsigned char E2addrL,unsigned char E2Data);  //写E2PROM 
void E2PROM_Erase(unsigned char E2addrH,unsigned char E2addrL);     //擦除扇区 

//关闭E2PROM 
void E2PROM_Close()
{
  ISP_CONTR=con_ISP_Disable;
}
//读E2PROM 
unsigned char E2PROM_Read(unsigned char E2addrH,unsigned char E2addrL)
{
  ISP_CONTR=con_ISP_Enable;	   
  ISP_CMD=cmd_E2PROM_Read; 
  ISP_ADDRH=E2addrH;
  ISP_ADDRL=E2addrL;
  ISP_TRIG=0x46;
  ISP_TRIG=0xB9;
  return(ISP_DATA);
}


//写E2PROM 
void E2PROM_Write(unsigned char E2addrH,unsigned char E2addrL,unsigned char E2Data)
{
  ISP_CONTR=con_ISP_Enable;	   
  ISP_CMD=cmd_E2PROM_Write; 
  ISP_DATA=E2Data;
  ISP_ADDRH=E2addrH;
  ISP_ADDRL=E2addrL;
  ISP_TRIG=0x46;
  ISP_TRIG=0xB9;
}


//擦除扇区 
void E2PROM_Erase(unsigned char E2addrH,unsigned char E2addrL)
{
  ISP_CONTR=con_ISP_Enable;	   
  ISP_CMD=cmd_E2PROM_Erase; 
  ISP_ADDRH=E2addrH;
  ISP_ADDRL=E2addrL;
  ISP_TRIG=0x46;
  ISP_TRIG=0xB9;
}


/*void main()
{
  E2PROM_Erase(0x28,0x00);
  E2PROM_Write(0x28,0x00,0x00);
  E2PROM_Write(0x28,0x01,0x01);  
  E2PROM_Write(0x28,0x01,0x02);
  E2PROM_Close();
  while(1)
   {;};
 } */