stc_eeprom.h

这是本自己写的一个关于STC12C5412AD的IAP测试程序源码

/************************************************************/
/*********     STC_EERPOM.H C51 Lite Driver     *************/
/**********     Written By CUST---20081117   ****************/
/************************************************************/
/*
sfr ISP_DATA  = 0xE2;
sfr ISP_ADDRH = 0xE3;
sfr ISP_ADDRL = 0xE4;
sfr ISP_CMD   = 0xE5;
sfr ISP_TRIG  = 0xE6;
sfr ISP_CONTR = 0xE7;
*/
//-----------------------------------------------------------------
#define ENABLE_ISP 0x82  //<20MHz
//-----------------------------------------------------------------
#define DATA_FLASH_START_ADDRESS  0x2E00  //STC12C5412AD 第24扇区 
//-----------------------------------------------------------------
//-----------------------------------------------------------------
void Sector_Erase(void);
unsigned char Byte_Read(unsigned int address);
void Byte_Program(unsigned int address,unsigned char ch);
//------------------------------------------------------------------
//------------------------------------------------------
void Sector_Erase(void)
{
	unsigned int address;

	ISP_CONTR=ENABLE_ISP; 
	ISP_CMD=0x03;             
	//--------------------------
	address=DATA_FLASH_START_ADDRESS;
	ISP_ADDRH=(unsigned char)(address>>8);   
	ISP_ADDRL=(unsigned char)(address);    
	
	EA=0;
	
	ISP_TRIG=0x46;  
	ISP_TRIG=0xB9;
	
	EA=1;

	ISP_CONTR=0;
	ISP_CMD=0;
	ISP_TRIG=0;
}
//------------------------------------------------------
unsigned char Byte_Read(unsigned int address)
{
	unsigned char data ch;
	    
	ISP_CONTR=ENABLE_ISP;
	ISP_CMD=0x01; 
	//--------------------------
	address=DATA_FLASH_START_ADDRESS+address;
	ISP_ADDRH=(unsigned char)(address>>8);     
	ISP_ADDRL=(unsigned char)(address);      
	
	EA=0;
	
	ISP_TRIG=0x46;    
	ISP_TRIG=0xB9;
	
	ch=ISP_DATA;   
	EA=1;

	ISP_CONTR=0;
	ISP_CMD=0;
	ISP_TRIG=0;

	return ch;
}
//------------------------------------------------------
void Byte_Program(unsigned int address,unsigned char ch)
{   
	//Sector_Erase(address);
	
	ISP_CONTR=ENABLE_ISP;   
	ISP_CMD=0x02;             
	//--------------------------
	address = DATA_FLASH_START_ADDRESS+address;
	ISP_ADDRH=(unsigned char)(address>>8);    
	ISP_ADDRL=(unsigned char)(address);      
	
	ISP_DATA=ch;
	
	EA=0;
	
	ISP_TRIG=0x46;     
	ISP_TRIG=0xB9;
	 
	EA=1;
	
	ISP_CONTR=0;
	ISP_CMD=0;
	ISP_TRIG=0; 
}
//---------------------------------------------------------------------
//------------------End of STC_EERPOM.H--------------------------------