Place Image and Font Ressources in external Flash with Keil

Question

Hello,

in my Project i want to place all Bitmap and Font Ressources into the external Flash.

My board is STM32F429 - Evalboard

Answer 1

Hi,

- add the required driver/bsp files for the external flash to you project
  and add the needed init code

- add an explicit scatter file to you project (project options, Linker) and
  add a NOR FLASH section:
  e. g.
  LR_NOR 0x60000000 0x01000000 {   
  ER_NOR 0x60000000 0x01000000 {
  Application.o(+RO-DATA)
  }
  }

- add all the object files that contain Bitmap and Font Resources
  to this ER_NOR section (as for 'Application.o' in the example above)

- if no suitable external flash loader is available in Keil MDK, use
  STM32 Link Utility for programming the external flash device

Best Regards,
Martin

Comments

Hi,

I follow the steps above you provide, and compile a success.the  explicit scatter file is follow

But I don't know how to use  STM32 Link Utility.Can you say about the detailed steps

 

; *************************************************************
; *** Scatter-Loading Description File generated by uVision ***
; *************************************************************

LR_IROM1 0x08000000 0x00100000  {    ; load region size_region
  ER_IROM1 0x08000000 0x00100000  {  ; load address = execution address
   *.o (RESET, +First)
   *(InRoot$$Sections)
   .ANY (+RO)
  }
  RW_IRAM1 0x20000000 0x00030000  {  ; RW data
   .ANY (+RW +ZI)
  }
}

LR_NOR x60000000 0 x01000000 {
ER_NOR x60000000 0 x01000000 {
Application.o(+ RO-DATA)
}
}

 

 

 

---

Hi,

Open the GUI version of STM32 Link Utility
External Loader -> Add External Loader -> select 'M29W128GL_STM324x9I-EVAL'
Open your hex file to program
Target -> Program...

Alternatively you can also use the new STM tool "STM32CubeProgrammer"

BTW.
In scatter file there should not be some space in the size parameter (0 x01000000 -> 0x01000000)

 

Best Regards,
Martin

---

you say In scatter file there should not be some space in the size parameter (0 x01000000 -> 0x01000000)。

But you said above

- add an explicit scatter file to you project (project options, Linker) and
  add a NOR FLASH section:
  e. g.
  LR_NOR 0x60000000 0x01000000 {   
  ER_NOR 0x60000000 0x01000000 {
  Application.o(+RO-DATA)
  }
  }

---

I also want to know the data can save to the nand flash, if you can how to download.Like STM32 Link the Utility does not support.

---

Could you please repeat you question more detailed?

---

I am using the board is stm32f429-discovery  (Before think that stm32f429-EVAL)

I use the download tool is STM32 ST-LINK Utility v4.2.0 

first

Open the GUI version of STM32 Link Utility
External Loader -> Add External Loader -> select 'M29W128GL_STM324x9I-EVAL'

Link to success, but I found that if the 0x08000000 write data is ok, but I will write data 0x60000000 errors
:Error occured during memory writing.

 

 

I estimate whether the memory can be written, external flash write。

---

In contrast to stm32f429-EVAL the stm32f429 discovery board does not contain external NOR flash.