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The D2 domain ram can't be operated

Lyu.1
Senior

Hi,Master
MCU: stm32h743ii

Question:
The scatter file is as follows: The stack and some global variables are allocated in RW_D2SRAM. After the program starts and during the handling of scatter file loading in its __main, it is found that both the stack push operation and the initialization of global variables are ineffective. The memory corresponding to RW_D2SRAM remains 0 all the time and cannot be modified. What is the reason for this? Is it necessary to enable a certain clock switch?

LR_IROM1 0x08000000 0x00200000  {    ; load region size_region
  ER_IROM1 0x08000000 0x00200000  {  ; load address = execution address
   *.o (RESET, +First)
   *(InRoot$$Sections)
   *(_drv_set_)
   .ANY (+RO)
   .ANY (+XO)
  }
  
  RW_ITCM 0x00000000 0x00010000  {  ; RW data
   *.o(fast.lv)
  }
  
  RW_IRAM2 0x24000000 0x00080000  {  ; RW data
   .ANY (+RW +ZI)
  }
  
  RW_DTCM 0x20000000 0x00020000  {  ; RW data
   *(dtcm_data)
  }
  
  RW_D2SRAM 0x30000000 0x00048000  {  ; RW data
   .ANY (+RW +ZI)
  }
  
  RW_D3SRAM 0x38000000 0x00010000  {  ; RW data
   *(d3_data)
  }
}

 

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