stm32l152: bootloader firmware flashing crash using page program flash

Posted on May 22, 2012 at 15:58

Hello,

my bootloader reflash routine works properly using FLASH_FastProgramWord(). To speed-up the procedure I tried using the faster Page Program FLASH_If_Write() function but most of of the times I get crashes. Can anyone help me?

Hereafter my routine:

int32_t ImageCopy(void)

{

  uint32_t NumPag, SizeLastPage, i, j;

  uint32_t flashdestination;

  /* Initialize flashdestination variable */

  flashdestination = APPLICATION_ADDRESS;

  // check image size

  if (FIRMWARE_SIZE > FIRMWARE_FLASH_MAX_SIZE) return -2;

 

  /* erase user application area */

  FLASH_If_Erase(APPLICATION_ADDRESS);

  // read external flash data 

  NumPag = FIRMWARE_SIZE / 1024;

  SizeLastPage = FIRMWARE_SIZE % 1024;

  uint32_t ramsource;

  for (i = 0; i < NumPag; i++)

    {

      ramsource = (uint32_t)tab_1024;

      // read 1024 bytes from external FLASH into tab_1024 buffer

      ExternalFlashRead(ADD_DOWNLOAD_IMAGE_START+i*1024, tab_1024, 1024);

      //  page program

      if (FLASH_If_Write(&flashdestination, (uint32_t*)ramsource ,256)) return -2;

       

    }

  if (SizeLastPage)

    {

      ramsource = (uint32_t)tab_1024;

      ExternalFlashRead(ADD_DOWNLOAD_IMAGE_START+NumPag*1024, tab_1024, SizeLastPage);

      if (FLASH_If_Write(&flashdestination, (uint32_t*)ramsource ,SizeLastPage/4)) return -2;

    }

 

 

  return 0;

}