stm32f051单片机从iap跳转app中断响应异常

#define APPLICATION_ADDRESS     (uint32_t)0x08003000

/* Private macro -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

#if   (defined ( __CC_ARM ))

  __IO uint32_t VectorTable[48] __attribute__((at(0x20000000)));

#elif (defined (__ICCARM__))

#pragma location = 0x20000000

  __no_init __IO uint32_t VectorTable[48];

#elif defined   (  __GNUC__  )

  __IO uint32_t VectorTable[48] __attribute__((section(".RAMVectorTable")));

#elif defined ( __TASKING__ )

  __IO uint32_t VectorTable[48] __at(0x20000000);

#endif

void IAP_Set()

{

        uint32_t i = 0;

        for(i = 0; i < 48; i++)

  {

    VectorTable[i] = *(__IO uint32_t*)(APPLICATION_ADDRESS + (i<<2));

  }



  /* Enable the SYSCFG peripheral clock*/

  //RCC_APB2PeriphResetCmd(RCC_APB2Periph_SYSCFG, ENABLE); 

        RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);

  /* Remap SRAM at 0x00000000 */

  SYSCFG_MemoryRemapConfig(SYSCFG_MemoryRemap_SRAM); 

}

void Delay(__IO uint32_t nTime)

{ 

  TimingDelay = nTime;



  while(TimingDelay != 0);

}

void TimingDelay_Decrement(void)

{

  if (TimingDelay != 0x00)

  { 

    TimingDelay--;

  }

}

int main(void)

{

//        LED_Init();

//        USART_Configuration();

//        //ÉèÖÃÖжÏÏòÁ¿±íµÄλÖÃÔÚ 0x3000

//        SystemInit();

  IAP_Set();

        SystemInit();

        LED_Init();

        USART_Configuration();

        if (SysTick_Config(SystemCoreClock / 1000))

  { 

    /* Capture error */ 

    while (1);

  }

        

        while(1)

        {

                LED_Open();//´ò¿ªledµÆ

                Delay(500);

                UART_send_byte(0x31);

                LED_Close();//¹ØµôledµÆ

    Delay(500);                

                UART_send_byte(0x33);

        }

}