at45db642.txt

AT45DB642的程序．． ．SPI查询方式

//---------------SPIInit();
//---------------SPI初始化---------------
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//*************************************************************************************************************
uint32 SPIInit( void )
{
    S0SPCR = 0x00;
	PINSEL0 &= 0xFFFF00FF;
    PINSEL0 |= 0x00001500;			  //引脚定义．．．
    IOSET = AT45DB_CS;

    /* Setting SPI0 clock, for Atmel SEEPROM, SPI clock should be no more 
    than 3Mhz on 4.5V~5.5V, no more than 2.1Mhz on 2.7V~5.5V */
    S0SPCCR = 0x8;					 //速度．．．
//#if INTERRUPT_MODE
//  if ( install_irq( SPI0_INT, (void *)SPI0Handler ) == FALSE )
//    {
//	return (FALSE);
//    }
    /* 8 bit, CPOL=CPHA=0, master mode, MSB first, interrupt enabled */
 //   S0SPCR = SPI0_SPIE | SPI0_MSTR;
//#else
    S0SPCR = SPI0_MSTR;			 //用查询方式 ．．．
//#endif
    return( TRUE );
}

//*************************************************************************************************************
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//---------------Buffer1_To_Write_AT45 (uint16 u16_page);．．．．－－－u16_page为主存的页地址．－－－－－－
//---------------SPI，转缓存1写入主存页中---------------
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//*************************************************************************************************************

void	Buffer1_To_Write_AT45 (uint16 u16_page)
{
//	uint16	u16_cnt;
  IOCLR = AT45DB_CS;
  IOCLR = AT45DB_CS;  
  S0SPDR = 0x83;
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_page>>5);
  while(0 == (S0SPSR&0x80));
  S0SPDR = ( (uint8)(u16_page))<<3;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  IOSET = AT45DB_CS;    
  IOSET = AT45DB_CS;
  while(!(IOPIN&Rdy_busy));
}
//*************************************************************************************************************
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//---Write_Buffer1_AT45();．－－－u16_address为缓存1的起始地址，u16_Counter为要写入的字节数．store_data写入数据的起始字节地址．．．．
//---------------SPI，写缓存1---------------
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//************************************************************************************************************* 
void	Write_Buffer1_AT45 (uint16 u16_address,uint16 u16_Counter,uint8 *store_data)
{
	uint16	u16_cnt;
  IOCLR = AT45DB_CS;
   IOCLR = AT45DB_CS; 
  S0SPDR = 0x84;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_address>>8);
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_address);
  while(0 == (S0SPSR&0x80));
    
  for(u16_cnt=0;u16_cnt<u16_Counter;u16_cnt++)
  {
    S0SPDR = *(store_data+u16_cnt);
    while(0 == (S0SPSR&0x80));
  }
   IOSET = AT45DB_CS; 
  IOSET = AT45DB_CS;
  while(!(IOPIN&Rdy_busy));
}
 
//*************************************************************************************************************
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//---Main_to_Buffer1_AT45();．－－－u16_page为主存的页地址．．．．
//---------------SPI，主存页的内容转到缓存1中---------------
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//************************************************************************************************************* 
void	Main_to_Buffer1_AT45(uint16 u16_page)
{
//	IOSET =  Light2;
	IOCLR = AT45DB_CS;
	IOCLR = AT45DB_CS;  
	S0SPDR = 0x53;
	while(0 == (S0SPSR&0x80));
	S0SPDR = (uint8)(u16_page>>5);
	while(0 == (S0SPSR&0x80));
	S0SPDR = ( (uint8)(u16_page))<<3;
	while(0 == (S0SPSR&0x80));
	S0SPDR = 0x00;
	while(0 == (S0SPSR&0x80));
 

	while(!(IOPIN&Rdy_busy));
    IOSET = AT45DB_CS;
    IOSET = AT45DB_CS;
//	IOCLR =  Light2;
}
//------------------------------------------------------


/*

//-------------------页写-----------------------
void	Write_AT45 (uint16 u16_page,uint8 *store_data)
{
	uint16	u16_cnt;
  IOCLR = AT45DB_CS;
  
  S0SPDR = 0x82;
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_page>>5);
  while(0 == (S0SPSR&0x80));
  S0SPDR = ( (uint8)(u16_page))<<3;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
    
  for(u16_cnt=0;u16_cnt<1056;u16_cnt++)
  {
    S0SPDR = *(store_data+u16_cnt);
    while(0 == (S0SPSR&0x80));
  }
  
  IOSET = AT45DB_CS;
  while(!(IOPIN&Rdy_busy));
}
 							  */
//***************************************************

/*
void	Read_AT45 (void)
{
	uint16	u16_cnt;
  
  IOCLR = AT45DB_CS;
  S0SPDR  = 0xd2;
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_page>>5);
  while(0 == (S0SPSR&0x80));
  S0SPDR = ((uint8)(u16_page))<<3;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  
  for(u16_cnt=0;u16_cnt<1056;u16_cnt++)
  {
    S0SPDR = 0x00;
    while(0 == (S0SPSR&0x80));
    DIS_FOR_IIC[u16_cnt] = S0SPDR;
  }
  IOSET = AT45DB_CS;
}
								*/
//---------------------------------------
//*************************************************************************************************************
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//---Reda_AT45_Continue();．－－－u16_page为主存的页地址．u16_address要读的数据的起始地址．u16_cnt要读的字节数．Store_temp存放数据的起始位置．
//---------------SPI，直接读主存的任意地址数据．．---------------Reda_AT45_Continue　MUST BE ＇Read_AT45_Continu＇haha．．．．
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//************************************************************************************************************* 
void	Reda_AT45_Continue(uint16 u16_page,uint16 u16_address,uint16 u16_cnt,uint8 *Store_temp)
{
	uint16 i;
	if(COMMUNICATE)	  //字库通讯显示．．．．．．．．
	{
		COMMUNICATING();
	}
	IOCLR = AT45DB_CS;
//	IOCLR = AT45DB_CS;
	S0SPDR  = 0xe8;
	while(0 == (S0SPSR&0x80));

	S0SPDR = (uint8)(u16_page>>5);
	while(0 == (S0SPSR&0x80));

	S0SPDR = (( (uint8)(u16_page))<<3)|( (uint8)(u16_address>>8));
	while(0 == (S0SPSR&0x80));

  	S0SPDR = (uint8)(u16_address);
	while(0 == (S0SPSR&0x80));	

	S0SPDR = 0x00;;
	while(0 == (S0SPSR&0x80));;

  	S0SPDR = 0x00;
  	while(0 == (S0SPSR&0x80));

  	S0SPDR = 0x00;
  	while(0 == (S0SPSR&0x80));

  	S0SPDR = 0x00;
  	while(0 == (S0SPSR&0x80));

  	for(i=0;i<u16_cnt;i++)
  	{
		S0SPDR = 0x00;
		while(0 == (S0SPSR&0x80));
		*(Store_temp+i) = S0SPDR;
	}
//	IOSET = AT45DB_CS;
	IOSET = AT45DB_CS;
	while(!(IOPIN&Rdy_busy));
}
	
//*************************************************************************************************************
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//---------------Buffer２_To_Write_AT45 (uint16 u16_page);．．．．－－－u16_page为主存的页地址．－－－－－－
//---------------SPI，转缓存2写入主存页中---------------
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//*************************************************************************************************************
void	Buffer2_To_Write_AT45 (uint16 u16_page)
{
  IOCLR = AT45DB_CS;
    IOCLR = AT45DB_CS;

  S0SPDR = 0x86;
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_page>>5);
  while(0 == (S0SPSR&0x80));
  S0SPDR = ( (uint8)(u16_page))<<3;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  IOSET = AT45DB_CS;    
  IOSET = AT45DB_CS;
  while(!(IOPIN&Rdy_busy));
}
//*************************************************************************************************************
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//---Write_Buffer1_AT45();．－－－u16_address为缓存1的起始地址，u16_Counter为要写入的字节数．store_data写入数据的起始字节地址．．．．
//---------------SPI，写缓存1---------------
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//************************************************************************************************************* 
void	Write_Buffer2_AT45 (uint16 u16_address,uint16 u16_Counter,uint8 *store_data)
{
	uint16	u16_cnt;
  IOCLR = AT45DB_CS;
    IOCLR = AT45DB_CS;

  S0SPDR = 0x87;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_address>>8);
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_address);
  while(0 == (S0SPSR&0x80));
    
  for(u16_cnt=0;u16_cnt<u16_Counter;u16_cnt++)
  {
    S0SPDR = *(store_data+u16_cnt);
    while(0 == (S0SPSR&0x80));
  }
  IOSET = AT45DB_CS;
  
  IOSET = AT45DB_CS;
  while(!(IOPIN&Rdy_busy));
}
 
//*************************************************************************************************************
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//---Main_to_Buffer1_AT45();．－－－u16_page为主存的页地址．．．．
//---------------SPI，主存页的内容转到缓存1中---------------
//－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
//************************************************************************************************************* 
void	Main_to_Buffer2_AT45(uint16 u16_page)
{

  IOCLR = AT45DB_CS;
   IOCLR = AT45DB_CS;
 
  S0SPDR = 0x55;
  while(0 == (S0SPSR&0x80));
  S0SPDR = (uint8)(u16_page>>5);
  while(0 == (S0SPSR&0x80));
  S0SPDR = ( (uint8)(u16_page))<<3;
  while(0 == (S0SPSR&0x80));
  S0SPDR = 0x00;
  while(0 == (S0SPSR&0x80));
  IOSET = AT45DB_CS;
    
  IOSET = AT45DB_CS;
  while(!(IOPIN&Rdy_busy));
}