//WriteAddr:开始写入的地址(24bit)

//NumByteToWrite:要写入的字节数(最大65535)

u8 W25QXX_BUFFER[4096];

void W25QXX_Write(u8* pBuffer,u32 WriteAddr,u16 NumByteToWrite)

{

u32 secpos;  //定义要擦除的删区

u32 secoff;

u32 secremain;

u32 i;

u8 * W25QXX_BUF;

W25QXX_BUF=W25QXX_BUFFER;

secpos=WriteAddr/4096*16*2;//扇区地址

secoff=WriteAddr%4096*16*2;//在扇区内的偏移

secremain=4096*16*2-secoff;//扇区剩余空间大小

printf("ad:%X,nb:%X\r\n",WriteAddr,NumByteToWrite);//测试用

if(NumByteToWrite<=secremain)secremain=NumByteToWrite;//不大于4096个字节

while(1)

{

W25QXX_Read(W25QXX_BUF,secpos*4096*16*2,4096*16*2);//读出整个扇区的内容

for(i=0;i

{

if(W25QXX_BUF[secoff+i]!=0XFF)break;//需要擦除

}

if(i

{

W25QXX_Erase_Sector(secpos);