W25Q64跨页操作

原：读W25Q64数据就可以跨页读 

void W25Q64_ReadData(uint32_t Address, uint8_t *DataArray, uint32_t Count)
{
    MySPI_Start();
    MySPI_SwapByte(0x03);
    MySPI_SwapByte(Address>>16);
    MySPI_SwapByte(Address>>8);
    MySPI_SwapByte(Address);
    for(uint64_t i =0;i<Count;i++)
    {
        DataArray[i] = MySPI_SwapByte(0x00);
    }
    MySPI_Stop(); 
}

原：W25Q64页编程只能写一页，超过该页尾的内容会在该页头上继续写，一次不能超过256个字节

void W25Q64_PageProgram(uint32_t Address, uint8_t *DataArray, uint32_t Count)
{
    W25Q64_WriteEnable();	
    MySPI_Start();								
	MySPI_SwapByte(0x02);
    MySPI_SwapByte(Address>>16);
    MySPI_SwapByte(Address>>8);
    MySPI_SwapByte(Address);
    for(uint16_t i=0;i<Count;i++)
    {
        MySPI_SwapByte(DataArray[i]);
    }
    MySPI_Stop(); 
   
    W25Q64_WaitBusy();
}

改：在原页编程的基础上判断是否需要跨页写，需要跨页写就通过不断写完一页就加地址（地址偏移）和数据偏移续上页编程（不断地从新的地址进行原页编程）实现多字节跨页写的功能

void W25Q64_xPageProgram(uint32_t address,uint8_t* DataArray,uint16_t Count)
{
    uint16_t remain;
    uint8_t span = (address%256)+Count -256;//是否跨页
    
    if(span>1)//跨页
    {   
        while(Count>0)//通过剩下要写的字节数判断是否继续循环
        {
            remain = 256 - (address%256);//当前地址在当页可以写入的字节数
            if(Count>=remain)//写一页或刚好写完一页结束页编程
            {
                
                W25Q64_PageProgram(address,DataArray,remain);             
                address = address + remain; //新页头的地址
                DataArray = DataArray + remain;       //数组索引偏移
                Count = Count - remain;     //剩下要写的字节数
            }
            else //最后的
            {
                W25Q64_PageProgram(address,DataArray,Count);
                Count = Count-Count;//结束页编程
            }
            
        }
    
    }
    else //不需要跨页
    {
        W25Q64_PageProgram(address,DataArray,Count);//原页编程
    }

}