STM32+ESP8266+AIR202/302远程升级方案-程序优化2-如果判断Flash需要擦除再擦除Flash,提高Flash使用寿命

            FlashStatus = FLASH_COMPLETE;
            for(j=0;j<STM_SECTOR_SIZE;j+=2)//ÅжϲÁ³ý
            {
              if(STMFLASH_ReadHalfWord(secpos*STM_SECTOR_SIZE+STM32_FLASH_BASE+j)!=0XFFFF)
                {
                  FlashStatus = FLASH_ErasePage(secpos*STM_SECTOR_SIZE+STM32_FLASH_BASE);//²Á³ýÕâ¸öÉÈÇø
                    break;
                }
            }