//擦除整个芯片
//整片擦除时间:
//W25X16:25s
//W25X32:40s
//W25X64:40s
//等待时间超长...
void SPI_Flash_Erase_Chip(void)
{
SPI_FLASH_Write_Enable(); //SET WEL
SPI_Flash_Wait_Busy();
SPI_FLASH_CS=0; //使能器件
SPIx_ReadWriteByte(W25X_ChipErase); //发送片擦除命令
SPI_FLASH_CS=1; //取消片选
SPI_Flash_Wait_Busy(); //等待芯片擦除结束
}
/**
*名称：SPI_Flash_Erase_Chip
*输入：无
*输出：无
*返回：无
*功能：擦除整个芯片整片擦除时间:
W25X16:25s
W25X32:40s
W25X64:40s
等待时间超长...
*说明：擦除时间来源于手册，有待验证
**/
void SPI_Flash_Erase_Chip(void)
{
SPI_FLASH_Write_Enable(); //SET WEL
SPI_Flash_Wait_Busy();
W25Q16_CS_LOW(); //使能器件
SPIx_ReadWriteByte(W25X_ChipErase); //发送片擦除命令
W25Q16_CS_HIGH(); //取消片选
SPI_Flash_Wait_Busy(); //等待芯片擦除结束
}
//擦除一个扇区
//Dst_Addr:扇区地址 0~511 for w25x16
//擦除一个山区的最少时间:150ms
void SPI_Flash_Erase_Sector(u32 Dst_Addr)
{
Dst_Addr*=4096;
SPI_FLASH_Write_Enable(); //SET WEL
SPI_Flash_Wait_Busy();
SPI_FLASH_CS=0; //使能器件
SPIx_ReadWriteByte(W25X_SectorErase); //发送扇区擦除指令
SPIx_ReadWriteByte((u8)((Dst_Addr)>>16)); //发送24bit地址
SPIx_ReadWriteByte((u8)((Dst_Addr)>>8));
SPIx_ReadWriteByte((u8)Dst_Addr);
SPI_FLASH_CS=1; //取消片选
SPI_Flash_Wait_Busy(); //等待擦除完成
}
//擦除一个扇区
//Dst_Addr:扇区地址 根据实际容量设置
//擦除一个山区的最少时间:150ms
void SPI_Flash_Erase_Sector(u32 Dst_Addr)
{
//监视falsh擦除情况,测试用
printf("fe:%x\r\n",Dst_Addr);
Dst_Addr*=4096;
SPI_FLASH_Write_Enable(); //SET WEL
SPI_Flash_Wait_Busy();
SPI_FLASH_CS=0; //使能器件
SPI2_ReadWriteByte(W25X_SectorErase); //发送扇区擦除指令
SPI2_ReadWriteByte((u8)((Dst_Addr)>>16)); //发送24bit地址
SPI2_ReadWriteByte((u8)((Dst_Addr)>>8));
SPI2_ReadWriteByte((u8)Dst_Addr);
SPI_FLASH_CS=1; //取消片选
SPI_Flash_Wait_Busy(); //等待擦除完成
}
//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_Write_Enable(); //SET WEL
SPI_FLASH_CS=0; //使能器件
SPIx_ReadWriteByte(W25X_PageProgram); //发送写页命令
SPIx_ReadWriteByte((u8)((WriteAddr)>>16)); //发送24bit地址
SPIx_ReadWriteByte((u8)((WriteAddr)>>8));
SPIx_ReadWriteByte((u8)WriteAddr);
for(i=0;i<NumByteToWrite;i++)SPIx_ReadWriteByte(pBuffer[i]);//循环写数
SPI_FLASH_CS=1; //取消片选
SPI_Flash_Wait_Busy(); //等待写入结束
}