【IAP】STM32不同容量大小芯片页大小不一致，擦除需注意

今天升级完发现跳转不了，然后用JLINK读取发现APP区域前1K也就是0X400的空间是空的，而后面的都能和正常APP大小对应，所以看是哪里多擦了一块

FLASH_Status CAN_BOOT_ErasePage(uint32_t StartPageAddr,uint32_t EndPageAddr)
{
  uint32_t i;
  FLASH_Status FLASHStatus = FLASH_COMPLETE;

  FLASH_Unlock();
  FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);	

  for(i = StartPageAddr;i <= EndPageAddr;i += PAGE_SIZE){
    FLASHStatus = FLASH_ErasePage(i);
    if(FLASHStatus!=FLASH_COMPLETE){
      FLASH_Lock();
      return	FLASHStatus;	
    }
  }
  FLASH_Lock();
  return FLASHStatus;
}

#if defined (STM32F10X_MD) || defined (STM32F10X_MD_VL)
 #define PAGE_SIZE                         (0x400)    /* 1 Kbyte */
 #define FLASH_SIZE                        (0x20000)  /* 128 KBytes */
#elif defined STM32F10X_CL
 #define PAGE_SIZE                         (0x800)    /* 2 Kbytes */
 #define FLASH_SIZE                        (0x40000)  /* 256 KBytes */
#elif defined STM32F10X_HD
 #define PAGE_SIZE                         (0x800)    /* 2 Kbytes */
 #define FLASH_SIZE                        (0x80000)  /* 512 KBytes */
#elif defined STM32F10X_XL
 #define PAGE_SIZE                         (0x800)    /* 2 Kbytes */
 #define FLASH_SIZE                        (0x100000) /* 1 MByte */
#else 
 #error "Please select first the STM32 device to be used (in stm32f10x.h)"    
#endif  

结果发现芯片与前芯片不一样，之前页大小是1KB，现在是2KB，而自定义的校验空间只有1KB,所以擦校验空间FLASH多擦了1KB,于是扩大校验地址到2KB，APP区域后移1KB就好了