Exemple #1
0
void SST25_WriteFlash2(u32 addr, u8 *readbuff, u16 length)
{
	u32 i = 0;
		
	Write_CMD();
	Write_EN();	
	Select_Flash();    
	SPI_Flash_SendByte(0xad);
	SPI_Flash_SendByte((addr&0xffffff)>>16);
	SPI_Flash_SendByte((addr&0xffff)>>8);
	SPI_Flash_SendByte(addr&0xff);
	SPI_Flash_SendByte(readbuff[0]);
	SPI_Flash_SendByte(readbuff[1]);
	NotSelect_Flash();
	i = 2;
	
	while (i < length)
	{
		Select_Flash();
		SPI_Flash_SendByte(0xad);
		SPI_Flash_SendByte(readbuff[i++]);
		SPI_Flash_SendByte(readbuff[i++]);
		NotSelect_Flash();
	}

	Write_DIS();	
	
	Select_Flash();	
	
	Busy_Test();
}
Exemple #2
0
void FlashPageWrite(u16 page,u8 *Data)		//写一整页,页范围0-4095
{
	unsigned int i;
	FlashWaitBusy();
	Select_Flash();
	SPI_Flash_SendByte(BUFFER_2_WRITE);
	SPI_Flash_SendByte(0x00);
	SPI_Flash_SendByte(0x00);
	SPI_Flash_SendByte(0x00);
	for (i = 0;i < 528; i++)
	{
		SPI_Flash_SendByte(Data[i]);
	}
	NotSelect_Flash();
		
	if ( page < 4096)
	{
		Select_Flash();
		SPI_Flash_SendByte(B2_TO_MM_PAGE_PROG_WITH_ERASE);
		SPI_Flash_SendByte((u8)(page>>6));
		SPI_Flash_SendByte((u8)(page<<2));
		SPI_Flash_SendByte(0x00);
		NotSelect_Flash();
		FlashWaitBusy();
	}	
Exemple #3
0
void Write_CMD(void)
{	
	Select_Flash();  			// SPI CS 使能
	SPI_Flash_SendByte(0x50);
	NotSelect_Flash(); 			// SPI CS 禁用
	
	Select_Flash();				// SPI CS 使能
	SPI_Flash_SendByte(0x01);
	SPI_Flash_SendByte(0x00); 
	NotSelect_Flash();			// SPI CS 禁用
	Busy_Test();				// 忙检测
}
Exemple #4
0
void Write_DIS(void)
{
	Select_Flash();  			// SPI CS 使能
	SPI_Flash_SendByte(0x04);	// 写禁止指令
	NotSelect_Flash();			// SPI CS 禁用
	Busy_Test();				// 忙检测
}	
Exemple #5
0
void FlashReadID(u8 *Data)
{
	u8 i;
	Select_Flash();	
  	SPI_Flash_SendByte(0x9F);
  	for(i = 0; i < 4; i++)
  	{
  		Data[i] = SPI_Flash_ReadByte();
  	}
  	NotSelect_Flash();	
}
Exemple #6
0
void FlashPageEarse(u16 page)
{	
	FlashWaitBusy();	
	Select_Flash();
	SPI_Flash_SendByte(PAGE_ERASE);
	SPI_Flash_SendByte((u8)(page >> 6));
	SPI_Flash_SendByte((u8)(page << 2));
	SPI_Flash_SendByte(Dummy_Byte);
	//|-23-|-22-|21|20|19|18|17|16|15|14|13|12|11|10|9|8|7|6|5|4|3|2|1|0|
	//|2个无关位|------------12位页地址-------------|----10个无关位-----|
	NotSelect_Flash();	
}
Exemple #7
0
void Page_Clr(u32 a1)
{
	Write_CMD();
	Write_EN();     
	Select_Flash();	  
	SPI_Flash_SendByte(0x20);
	SPI_Flash_SendByte((a1&0xffffff)>>16);        
	SPI_Flash_SendByte((a1&0xffff)>>8);          
	SPI_Flash_SendByte(a1&0xff);            
	NotSelect_Flash();
	Busy_Test();
}
Exemple #8
0
void FlashReadID(void)
{
	Select_Flash();	
	
	SPI_Flash_SendByte(0x90);
	SPI_Flash_SendByte(0x00);
	SPI_Flash_SendByte(0x00);
	SPI_Flash_SendByte(0x00);
	fac_id = SPI_Flash_ReadByte();	// BFH: 工程码SST
	dev_id = SPI_Flash_ReadByte();	// 41H: 器件型号SST25VF016B     
	
	NotSelect_Flash();	
}
Exemple #9
0
u8 Read_CMD(void)
{
	u8 busy;
	
	Select_Flash();
	
	SPI_Flash_SendByte(0x05);
	busy = SPI_Flash_ReadByte();
	
	NotSelect_Flash();

	return (busy);
}
Exemple #10
0
void SST25_WriteFlash(u32 addr, u8 *readbuff, u16 length)
{
	u32 i = 0, a2;
	
 	Page_Clr(addr);	// 删除页		  
	
	Write_CMD();
	Write_EN();	
	Select_Flash();    
	SPI_Flash_SendByte(0xad);
	SPI_Flash_SendByte((addr&0xffffff)>>16);
	SPI_Flash_SendByte((addr&0xffff)>>8);
	SPI_Flash_SendByte(addr&0xff);
	SPI_Flash_SendByte(readbuff[0]);
	SPI_Flash_SendByte(readbuff[1]);
	NotSelect_Flash();
	i = 2;
	
	while (i < length)
	{
		a2 = 120;
		while (a2 > 0) 
			a2--;

		Select_Flash();
		SPI_Flash_SendByte(0xad);
		SPI_Flash_SendByte(readbuff[i++]);
		SPI_Flash_SendByte(readbuff[i++]);
		NotSelect_Flash();
	}

	a2 = 100;
	while (a2 > 0) 
		a2--;
	
	Write_DIS();	
	Select_Flash();	
	Busy_Test();
}
Exemple #11
0
void FlashPageRead(u16 page,u8 *Data)
{
	u16 i;	
	FlashWaitBusy();
	Select_Flash();
	SPI_Flash_SendByte(PAGE_READ);
	SPI_Flash_SendByte((u8)(page >> 6));
  SPI_Flash_SendByte((u8)(page << 2));
  SPI_Flash_SendByte(0x00);//3个字节
  SPI_Flash_SendByte(0x00);
  SPI_Flash_SendByte(0x00);
  SPI_Flash_SendByte(0x00);
  SPI_Flash_SendByte(0x00);
  for (i = 0;i < 528; i++)
	{
		Data[i] = SPI_Flash_ReadByte();
	}
	NotSelect_Flash();	
}
Exemple #12
0
void SST25_ReadFlash(u32 addr, u8 *readbuff, u16 length)
{
	u32 i = 0; 
	
	Select_Flash();
	
	SPI_Flash_SendByte(0x0b);
	SPI_Flash_SendByte((addr&0xffffff)>>16);
	SPI_Flash_SendByte((addr&0xffff)>>8);
	SPI_Flash_SendByte(addr&0xff);
	SPI_Flash_SendByte(0);
	
	while (i < length)
	{	
		readbuff[i] = SPI_Flash_ReadByte();
		i++;
	}
	
	NotSelect_Flash();	 	
}
Exemple #13
0
/*******************************************************************************
* Function Name  : SPI_FLASH_Init
* Description    : Initializes the peripherals used by the SPI FLASH driver.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void SPI_Flash_Init(void)
{
  SPI_InitTypeDef  SPI_InitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;
   
  /* Enable SPI1 GPIOB clocks */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1 ,ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
  /* Configure SPI1 pins: SCK, MISO and MOSI */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Configure PA.12 as Output push-pull, used as Flash Chip select */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Deselect the FLASH: Chip Select high */
  NotSelect_Flash();

  /* SPI1 configuration */ 
  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  SPI_Init(SPI1, &SPI_InitStructure);
  
  /* Enable SPI1  */
  SPI_Cmd(SPI1, ENABLE);   
}
Exemple #14
0
void Write_EN(void)
{
	Select_Flash();				// SPI CS 使能
	SPI_Flash_SendByte(0x06);	// 写使能指令
	NotSelect_Flash();			// SPI CS 禁用
}
Exemple #15
0
void SST25_Init(void)
{
	MYSPI_Init();
	
	NotSelect_Flash();	
}