/******************************************************************************************
*函数名：SPI_FLASH_PageWrite()
* 参数：uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite 数据指针，写入地址，写入的个数
* 返回值：void
* 功能：SPIFLASH页写入数据函数，外部调用
*********************************************************************************************/
void SPI_FLASH_PageWrite(uint8_t *pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite)
{
/*使能写入*/
SPI_FLASH_WriteEnable();
/*使能片选*/
SPI_FLASH_CS_LOW();
/* 发送页写入指令*/
SSP0_SendByte(W25X_PageProgram);
/*发送高8位数据地址*/
SSP0_SendByte((WriteAddr & 0xFF0000) >> 16);
/*发送中8位数据地址*/
SSP0_SendByte((WriteAddr & 0xFF00) >> 8);
/*发送低8位数据地址*/
SSP0_SendByte(WriteAddr & 0xFF);
/*检测写入的数据是否超出页的容量大小*/
if (NumByteToWrite > SPI_FLASH_PerWritePageSize)
{
NumByteToWrite = SPI_FLASH_PerWritePageSize;
}
/*循环写入数据*/
while (NumByteToWrite--)
{
/*发送数据*/
SSP0_SendByte(*pBuffer);
/* 指针移到下一个写入数据 */
pBuffer++;
}
/*失能片选*/
SPI_FLASH_CS_HIGH();
/* 等待写完成*/
SPI_FLASH_WaitForWriteEnd();
}
/**
* @brief Writes more than one byte to the FLASH with a single WRITE
* cycle(Page WRITE sequence). The number of byte can't exceed
* the FLASH page size.
* @param pBuffer : pointer to the buffer containing the data to be
* written to the FLASH.
* @param WriteAddr : FLASH's internal address to write to.
* @param NumByteToWrite : number of bytes to write to the FLASH,
* must be equal or less than "SPI_FLASH_PageSize" value.
* @retval : None
*/
void SPI_FLASH_PageWrite(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite)
{
/* Enable the write access to the FLASH */
SPI_FLASH_WriteEnable();
/* Select the FLASH: Chip Select low */
SPI_FLASH_CS_LOW();
/* Send "Write to Memory " instruction */
SPI_FLASH_SendByte(WRITE);
/* Send WriteAddr high nibble address byte to write to */
SPI_FLASH_SendByte((WriteAddr & 0xFF0000) >> 16);
/* Send WriteAddr medium nibble address byte to write to */
SPI_FLASH_SendByte((WriteAddr & 0xFF00) >> 8);
/* Send WriteAddr low nibble address byte to write to */
SPI_FLASH_SendByte(WriteAddr & 0xFF);
/* while there is data to be written on the FLASH */
while (NumByteToWrite--)
{
/* Send the current byte */
SPI_FLASH_SendByte(*pBuffer);
/* Point on the next byte to be written */
pBuffer++;
}
/* Deselect the FLASH: Chip Select high */
SPI_FLASH_CS_HIGH();
/* Wait the end of Flash writing */
SPI_FLASH_WaitForWriteEnd();
}
uint8_t SPI_FLASH_ReadStatus(uint8_t Status)
{
uint8_t FLASH_Status;
SPI_FLASH_WriteEnable();
SPI_FLASH_CS_LOW();
SPI_FLASH_SendByte(Status);
FLASH_Status = SPI_FLASH_GetByte();
SPI_FLASH_CS_HIGH();
//SPI_FLASH_WriteDisable();
return FLASH_Status;
}
/*******************************************************************************
SPI_FLASH_PageErase : Erases the specified FLASH Page.
*******************************************************************************/
void SPI_FLASH_PageErase(u32 PageAddr)
{
SPI_FLASH_WriteEnable();
SPI_FLASH_CS_LOW();
SPI_FLASH_SendByte(PE);
SPI_FLASH_SendByte((PageAddr & 0xFF0000) >> 16); //Send high address byte
SPI_FLASH_SendByte((PageAddr & 0xFF00) >> 8); //Send medium address byte
SPI_FLASH_SendByte(PageAddr & 0xFF); //Send low address byte
SPI_FLASH_CS_HIGH();
SPI_FLASH_WaitForWriteEnd(); // Wait the end of Flash writing
}
/******************************************************************************************
*函数名：SPI_FLASH_BulkErase()
* 参数：void
* 返回值：void
* 功能：SPIFLASH整片擦除函数，外部调用
*********************************************************************************************/
void SPI_FLASH_BulkErase(void)
{
/*使能写入*/
SPI_FLASH_WriteEnable();
/* 使能片选 */
SPI_FLASH_CS_LOW();
/*发送整片擦除指令*/
SSP0_SendByte(W25X_ChipErase);
/*失能片选*/
SPI_FLASH_CS_HIGH();
/* 等待写完成*/
SPI_FLASH_WaitForWriteEnd();
}
//SPI在一页(0~65535)内写入少于256个字节的数据
//在指定地址开始写入最大256字节的数据
//pBuffer:数据存储区
//WriteAddr:开始写入的地址(24bit)
//NumByteToWrite:要写入的字节数(最大256),该数不应该超过该页的剩余字节数!!!
void SPI_Flash_Write_Page(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite)
{
u16 i;
SPI_FLASH_WriteEnable(); //SET WEL
SPI_FLASH_CS_LOW(); //使能器件
SPI_FLASH_SendByte(W25X_PageProgram); //发送写页命令
SPI_FLASH_SendByte((u8)((WriteAddr)>>16)); //发送24bit地址
SPI_FLASH_SendByte((u8)((WriteAddr)>>8));
SPI_FLASH_SendByte((u8)WriteAddr);
for(i=0;i<NumByteToWrite;i++)SPI_FLASH_SendByte(pBuffer[i]);//循环写数
SPI_FLASH_CS_HIGH();
//取消片选
SPI_FLASH_WaitForWriteEnd(); //等待写入结束
}
void SPI_FLASH_WriteStatus(uint16_t wStatus)
{
SPI_FLASH_WriteEnable();
SPI_FLASH_CS_LOW();
//SPI_FLASH_WriteEnable();
//Spi_Soft_Delay(5);
SPI_FLASH_SendByte(WRSR);
SPI_FLASH_SendByte(wStatus & 0xff);
SPI_FLASH_SendByte(wStatus>>8);
SPI_FLASH_CS_HIGH();
SPI_FLASH_WaitForWriteEnd();
}
/**
* @brief Erases the entire FLASH.
* @param None
* @retval : None
*/
void SPI_FLASH_BulkErase(void)
{
/* Send write enable instruction */
SPI_FLASH_WriteEnable();
/* Bulk Erase */
/* Select the FLASH: Chip Select low */
SPI_FLASH_CS_LOW();
/* Send Bulk Erase instruction */
SPI_FLASH_SendByte(BE);
/* Deselect the FLASH: Chip Select high */
SPI_FLASH_CS_HIGH();
/* Wait the end of Flash writing */
SPI_FLASH_WaitForWriteEnd();
}
void SPI_FLASH_PageWrite(u8* pBuffer, u32 WriteAddr)
{
u16 Lenght = 0x100;
SPI_FLASH_WriteEnable();
SPI_FLASH_CS_LOW();
SPI_FLASH_SendByte(PW);
SPI_FLASH_SendByte((WriteAddr & 0xFF0000) >> 16);
SPI_FLASH_SendByte((WriteAddr & 0xFF00) >> 8);
SPI_FLASH_SendByte(WriteAddr & 0xFF);
while(Lenght--) { // while there is data to be written on the FLASH
SPI_FLASH_SendByte(*pBuffer);
pBuffer++;
}
SPI_FLASH_CS_HIGH();
SPI_FLASH_WaitForWriteEnd();
}
/******************************************************************************************
*函数名：SPI_FLASH_SectorErase()
* 参数：uint32_t SectorAddr 块地址
* 返回值：void
* 功能：SPIFLASH扇区擦除函数，外部调用
*********************************************************************************************/
void SPI_FLASH_SectorErase(uint32_t SectorAddr)
{
/*发送写数据使能指令*/
SPI_FLASH_WriteEnable();
/*等待数据写完，保证写操作是空闲的*/
SPI_FLASH_WaitForWriteEnd();
/* 使能片选 */
SPI_FLASH_CS_LOW();
/*发送扇区擦除指令*/
SSP0_SendByte(W25X_SectorErase);
/*发送块地址高8位*/
SSP0_SendByte((SectorAddr & 0xFF0000) >> 16);
/*发送块地址中8位*/
SSP0_SendByte((SectorAddr & 0xFF00) >> 8);
/*发送块地址低8位*/
SSP0_SendByte(SectorAddr & 0xFF);
/*失能片选*/
SPI_FLASH_CS_HIGH();
/* 等待写完毕*/
SPI_FLASH_WaitForWriteEnd();
}
/*******************************************************************************
* Function Name : SPI_FLASH_SectorErase
* Description : Erases the specified FLASH sector.
* Input : SectorAddr: address of the sector to erase.
* Output : None
* Return : None
*******************************************************************************/
void SPI_FLASH_SectorErase(u32 SectorAddr)
{
/* Send write enable instruction */
SPI_FLASH_WriteEnable();
SPI_FLASH_WaitForWriteEnd();
/* Sector Erase */
/* Select the FLASH: Chip Select low */
SPI_FLASH_CS_LOW();
/* Send Sector Erase instruction */
SPI_FLASH_SendByte(W25X_SectorErase);
/* Send SectorAddr high nibble address byte */
SPI_FLASH_SendByte((SectorAddr & 0xFF0000) >> 16);
/* Send SectorAddr medium nibble address byte */
SPI_FLASH_SendByte((SectorAddr & 0xFF00) >> 8);
/* Send SectorAddr low nibble address byte */
SPI_FLASH_SendByte(SectorAddr & 0xFF);
/* Deselect the FLASH: Chip Select high */
SPI_FLASH_CS_HIGH();
/* Wait the end of Flash writing */
SPI_FLASH_WaitForWriteEnd();
}
/*******************************************************************************
SPI_FLASH_PageWrite :
SPI FLASH 的2~16页被定义成参数区
*******************************************************************************/
void Param_PageWrite(u8* pBuffer, u8 PageNum)
{
u16 Lenght;
u32 WriteAddr;
Lenght = 0x100;
WriteAddr = 0x200 * (1 + PageNum);
// SPI_FLASH_PageErase(WriteAddr);
SPI_FLASH_WriteEnable();
SPI_FLASH_CS_LOW();
SPI_FLASH_SendByte(PW);
SPI_FLASH_SendByte((WriteAddr & 0xFF0000) >> 16);
SPI_FLASH_SendByte((WriteAddr & 0xFF00) >> 8);
SPI_FLASH_SendByte(WriteAddr & 0xFF);
while(Lenght--) { // while there is data to be written on the FLASH
SPI_FLASH_SendByte(*pBuffer);
pBuffer++;
}
SPI_FLASH_CS_HIGH();
SPI_FLASH_WaitForWriteEnd();
}
/*******************************************************************************
* Function Name : SPI_FLASH_PageWrite
* Description : Writes more than one byte to the FLASH with a single WRITE
* cycle(Page WRITE sequence). The number of byte can't exceed
* the FLASH page size.
* Input : - pBuffer : pointer to the buffer containing the data to be
* written to the FLASH.
* - WriteAddr : FLASH's internal address to write to.
* - NumByteToWrite : number of bytes to write to the FLASH,
* must be equal or less than "SPI_FLASH_PageSize" value.
* Output : None
* Return : None
*******************************************************************************/
void SPI_FLASH_PageWrite(u8* pBuffer, u32 WriteAddr, u16 NumByteToWrite)
{
/* Enable the write access to the FLASH */
SPI_FLASH_WriteEnable();
/* Select the FLASH: Chip Select low */
SPI_FLASH_CS_LOW();
/* Send "Write to Memory " instruction */
SPI_FLASH_SendByte(W25X_PageProgram);
/* Send WriteAddr high nibble address byte to write to */
SPI_FLASH_SendByte((WriteAddr & 0xFF0000) >> 16);
/* Send WriteAddr medium nibble address byte to write to */
SPI_FLASH_SendByte((WriteAddr & 0xFF00) >> 8);
/* Send WriteAddr low nibble address byte to write to */
SPI_FLASH_SendByte(WriteAddr & 0xFF);
if(NumByteToWrite > SPI_FLASH_PerWritePageSize)
{
NumByteToWrite = SPI_FLASH_PerWritePageSize;
//printf("\n\r Err: SPI_FLASH_PageWrite too large!");
}
/* while there is data to be written on the FLASH */
while (NumByteToWrite--)
{
/* Send the current byte */
SPI_FLASH_SendByte(*pBuffer);
/* Point on the next byte to be written */
pBuffer++;
}
/* Deselect the FLASH: Chip Select high */
SPI_FLASH_CS_HIGH();
/* Wait the end of Flash writing */
SPI_FLASH_WaitForWriteEnd();
}