W25Q64如何再次格式化

qujian55 · 发表于 2014-10-3 09:32:44

例子上原来是格式化成6M，格式化好了之后，我想改成2M 现在将黄色部分改为2048*2后读出了还是6M，如何将其再次格式化为2M

#define SD_CARD 0
#define EX_FLASH 1

#define FLASH_SECTOR_SIZE 512

u16 FLASH_SECTOR_COUNT=2048*2;//原来为2048*6
#define FLASH_BLOCK_SIZE 8

DSTATUS disk_initialize (
BYTE drv /* Physical drive nmuber (0..) */
)
{
u8 res=0;
switch(drv)
{
case SD_CARD:
res = SD_Initialize();//SD_Initialize() //if SD initlize err run the fellow code (because SD initlize err can case the spi un_work)
if(res)
{
SD_SPI_SpeedLow();
SD_SPI_ReadWriteByte(0xff);
SD_SPI_SpeedHigh();
}
break;
case EX_FLASH:
SPI_Flash_Init();
if(SPI_FLASH_TYPE==W25Q64)FLASH_SECTOR_COUNT=2048*2;//W25Q64//原来为2048*6
else FLASH_SECTOR_COUNT=2048*2;
break;
default:
res=1;
}
if(res)return STA_NOINIT;
else return 0; //ok
}