STC89C51RC_EEPROM header file

/*****File  Function :  STC89C51RC_EEPROM Read and Write *****/
/*****Program Author :  ZhengWen(ClimberWin)                       *****/
/*****Compile Date   :  2008/2                                                  *****/
/*****Edition Info   :  V1.0                                                        *****/
/*****Amend   Date   :                                                            *****/
/*****************************************************************************/
#ifndef __STC89C51RC_EEPROM_CLIMBERWIN__
#define __STC89C51RC_EEPROM_CLIMBERWIN__
#define uchar unsigned char
#define uint  unsigned int          
#include
/*******************************************************/

/*****STC89C51RC special function register definition********/
sfr isp_wdt = 0xE1;
sfr isp_data = 0xE2;
sfr isp_addrh = 0xE3;
sfr isp_addrl = 0xE4;
sfr isp_cmd = 0xE5;
sfr isp_trig = 0xE6;
sfr isp_contr = 0xE7;
/*********************************************/

/***************STC89CXX_EEPROM sector erase program****************************/
void STC89CXX_EEPROM_Erase(unsigned char t_addr)
{
    isp_addrh = t_addr; //It is not necessary that any byte in the sector is the sector address, no need for the first address, the MCU will handle it by itself
    isp_addrl = 0;
    EA = 0; //Disable interrupt
    isp_contr = 0x81;      
    isp_cmd = 3; //Sector erase, to make a byte empty, must erase 1 sector
    isp_trig = 0x46; //First send 0x46 and then send 0xb9 ISP/IAP trigger register, this is required every time
    isp_trig = 0xb9; //After sending 0xb9, ISP/IAP is immediately triggered to start
    _nop_(); _nop_
    ();
    isp_contr = 0;   
    isp_cmd = 0;
    isp_trig = 0;
    isp_addrh = 0;
    isp_addrl = 0;
    EA = 1; // Enable interrupt
}
/***************************************************/

/***************STC89CXX_EEPROM byte write program*****************************/
void STC89CXX_EEPROM_Char_Write(unsigned char Write_addr_h,unsigned char Write_addr_l ,unsigned char Write_da ta)
{
      
        isp_da ta = Write_da ta;
        isp_addrh = Write_addr_h; //Send address high bit
        isp_addrl = Write_addr_l; //Address low bit
        EA = 0; /* Disable interrupt*/
        isp_contr = 0x81;      
        isp_cmd = 2; //Send sector command
        isp_trig = 0x46;
        isp_trig = 0xb9;
        _nop_();
        _nop_();
        isp_contr = 0;              
        isp_cmd = 0;
        isp_trig = 0;
        isp_addrh = 0;
        isp_addrl = 0;        
        EA = 1; /* Enable interrupt*/
   
}
/******************************************************************/

/***************STC89CXX_EEPROM字节读程序*************************/
STC89CXX_EEPROM_Char_Read(unsigned char Read_addr_h,unsigned char Read_addr_l)
{
  
        unsigned char Read_isp_data;

        isp_addrh = Read_addr_h; //Send address high byte
        isp_addrl = Read_addr_l; //Send address low byte (starting from 0 to num-1)
        EA = 0; /* Disable interrupt*/
        isp_contr = 0x81; /*20M, is 0x80 orl 1 */
        isp_cmd = 1; // 1 means byte read
        isp_trig = 0x46; //Send 0x46 first and then 0xb9 ISP/IAP trigger register, this is required every time
        isp_trig = 0xb9; //After sending 0xb9, ISP/IAP is immediately triggered to start
        _nop_(); //No instruction
        _nop_(); //No instruction
        isp_contr = 0; //Disable ISP/IAP operation
        isp_cmd = 0; //Remove ISP/IAP command
        isp_trig = 0; //Prevent ISP/IAP Command false trigger
        isp_addrh = 0; //The address points to the non-EEPROM address area to prevent false operation
        isp_addrl = 0;        
        EA = 1; /* Open interrupt*/
        Read_isp_da ta=isp_da ta;
        return(Read_isp_da ta);
   
} 
/**************************************************************/

/*******************************************************************************/

#endif