1.在项目文件夹 新建 RAM.ini 
---------------------------------------------------------------- 
FUNC void Setup (void) { 

  SP = _RDWORD(0x20000000);          // 堆栈指针 
  PC = _RDWORD(0x20000004);          // PC 
  _WDWORD(0xE000ED08, 0x20000000);   // 中断向量偏移地址 
} 

LOAD ./basic.axf INCREMENTAL      // Download，.axf 根据自己的文件名和目录修改 

Setup();                             // 调用Setup(); 

g, main                             //跳转到main 

----------------------------------------------------------------------copy 以上。 

2.把程序起始地址改成RAM的起始地址。 

#ifdef  VECT_TAB_RAM  
  /* Set the Vector Table base location at 0x20000000 */ 
  NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0); 
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */ 
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);   
#endif