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usb host bootloader

Hi all
I have problem with usb host boot loader , if the button is pressed the bootloader reads the binary code from the usb stick and writes this own at application memory from 0x8008000
after debugging it seems this is ok .

if the button is not pressed , the bootloader should jump at the application , but it does not do , it stucks in the default handler .

in the application code I set the target ROM1 start 0x800800
and I defined VECT_TAB_OFFSET to 0x800

but no way it doesnt not work . my bootloader code depends on the code of the discovery kit of
stm32f407 from ST, my MCU is stm32f407.
Could you guide me to solve it problem please ?

Regards
S. Sami

Parents

0 sami sami over 12 years ago in reply to Thorsten de Buhr

Thank you Thorsten de Buhr

But could you explain your code please ?

here is my bootloader code and how can arrange it to work with yours .


int main(void)
{
  /* STM32 evalboard user initialization */
  BSP_Init();

  /* Flash unlock */
  FLASH_If_FlashUnlock();

  /* Test if User button on the Discovery kit is pressed */
  //if (STM_EVAL_PBGetState(BUTTON_USER) == Bit_RESET)
        if(GPIO_ReadInputDataBit(GPIOE, GPIO_Pin_0)==1)//
  {
    /* Check Vector Table: Test if user code is programmed starting from address
       "APPLICATION_ADDRESS" */

    if (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0x2FFE0000 ) == 0x20000000)
    {
      /* Jump to user application */
      JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);

      Jump_To_Application = (pFunction) JumpAddress;
      /* Initialize user application's Stack Pointer */
      __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
      Jump_To_Application();
    }
  }

  /* Init Host Library */
  USBH_Init(&USB_OTG_Core, USB_OTG_FS_CORE_ID, &USB_Host, &USBH_MSC_cb, &USR_Callbacks);

  while (1)
  {
    /* Host Task handler */
    USBH_Process(&USB_OTG_Core, &USB_Host);
  }
}

Regards
S.Sami

Reply

0 sami sami over 12 years ago in reply to Thorsten de Buhr

Thank you Thorsten de Buhr

But could you explain your code please ?

here is my bootloader code and how can arrange it to work with yours .


int main(void)
{
  /* STM32 evalboard user initialization */
  BSP_Init();

  /* Flash unlock */
  FLASH_If_FlashUnlock();

  /* Test if User button on the Discovery kit is pressed */
  //if (STM_EVAL_PBGetState(BUTTON_USER) == Bit_RESET)
        if(GPIO_ReadInputDataBit(GPIOE, GPIO_Pin_0)==1)//
  {
    /* Check Vector Table: Test if user code is programmed starting from address
       "APPLICATION_ADDRESS" */

    if (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0x2FFE0000 ) == 0x20000000)
    {
      /* Jump to user application */
      JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);

      Jump_To_Application = (pFunction) JumpAddress;
      /* Initialize user application's Stack Pointer */
      __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
      Jump_To_Application();
    }
  }

  /* Init Host Library */
  USBH_Init(&USB_OTG_Core, USB_OTG_FS_CORE_ID, &USB_Host, &USBH_MSC_cb, &USR_Callbacks);

  while (1)
  {
    /* Host Task handler */
    USBH_Process(&USB_OTG_Core, &USB_Host);
  }
}

Regards
S.Sami

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