STM32Flash读写

static int hal_readSector(uint32 sec, uint32 *pdata)
{
    uint32 saddr;
    int i;
    saddr = (defStartSector+sec)*defSectorSize;
    for(i=0;i<(defSectorSize/4);i++)
    {
        pdata[i] = *((uint32*)saddr);
        saddr+=4;
    }
    return defSectorSize;
}
static int hal_writeSector(uint32 sec, uint32 *pdata)
{
    FLASH_Status ret;
    uint32 saddr;
    int i;
    saddr = (defStartSector+sec)*defSectorSize;
    FLASH_ClearFlag(FLASH_FLAG_BSY|FLASH_FLAG_EOP|FLASH_FLAG_PGERR|FLASH_FLAG_WRPRTERR);
    FLASH_Unlock();
    FLASH->ACR&=~(1<<10);//FLASH disable code fetch
    ret = FLASH_ErasePage(saddr);
    if(ret==FLASH_COMPLETE)
    {
        FLASH_ClearFlag(FLASH_FLAG_BSY|FLASH_FLAG_EOP|FLASH_FLAG_PGERR|FLASH_FLAG_WRPRTERR);
        for(i=0;i<(defSectorSize/4);i++)
        {
            ret = FLASH_ProgramWord(saddr,pdata[i]);
            if(ret!=FLASH_COMPLETE)
                break;
            saddr+=4;
        }
    }
    FLASH->ACR|=1<<10;        //FLASH enable code fetch
    FLASH_Lock();    //??FLASH???????
    return defSectorSize;
}