BootLoader：

main里调用函数跳转到APP地址0x8003000

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1. typedef  void (*pFunction)(void);

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1. #define ApplicationAddress    0x8003000

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1. void UserAppStart(void)
   
2. {
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3.           if (((*(__IO uint32_t*)ApplicationAddress) & 0x2FFE0000 ) == 0x20000000)
   
4.     {
   
5.       /* Jump to user application */
   
6.       JumpAddress = *(__IO uint32_t*) (ApplicationAddress + 4);
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7.       Jump_To_Application = (pFunction) JumpAddress;
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8.       /* Initialize user application's Stack Pointer */
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9.       __set_MSP(*(__IO uint32_t*) ApplicationAddress);
   
10.       Jump_To_Application();
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11.     }
    
12. }

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APP：

4 I, L2 R% ]7 M$ b. w- F; E/ Emain 函数添加

1. #define APPLICATION_ADDRESS     ((uint32_t)0x08003000)
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2. #if   (defined ( __CC_ARM ))
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3.   __IO uint32_t VectorTable[48] __attribute__((at(0x20000000)));
   
4. #elif (defined (__ICCARM__))
   
5. #pragma location = 0x20000000
   
6.   __no_init __IO uint32_t VectorTable[48];
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7. #elif defined   (  __GNUC__  )
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8.   __IO uint32_t VectorTable[48] __attribute__((section(".RAMVectorTable")));
   
9. #elif defined ( __TASKING__ )
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10.   __IO uint32_t VectorTable[48] __at(0x20000000);
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11. #endif

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1.   /* USER CODE BEGIN 1 */
   
2.         uint32_t i = 0;

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1.   /* Relocate by software the vector table to the internal SRAM at 0x20000000 ***/  
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2.         
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3.   /* Copy the vector table from the Flash (mapped at the base of the application
   
4.      load address 0x08003000) to the base address of the SRAM at 0x20000000. */
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5. 
   
6.   for(i = 0; i < 48; i++)
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7.   {
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8.     VectorTable<i> = *(__IO uint32_t*)(APPLICATION_ADDRESS + (i<<2));</i>
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9.   }
   
10.         // Enable the SYSCFG peripheral clock
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11.   __HAL_RCC_SYSCFG_CLK_ENABLE();
    
12.   // Remap SRAM at 0x00000000

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1.   __HAL_SYSCFG_REMAPMEMORY_SRAM();

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$ _! v# C8 `+ |, B7 ?! O# e在Keil下设置IROM1：start 0x8003000 IRAM1：Start 0x200000C0

. P9 A% e9 E0 R+ t% b  b* ^6 kstm32f0 没有中断偏移寄存器，所以将中断向量表读取到RAM中，然后重映射到RAM地址.