Hardfault on IAP jump to APP

[cable gu]

Hi guys,

I have use the stm32f105 to do a job on the IAP jump tp APP, and normally it works fine, but latest day, I have to disable the USB code on the APP code, then use the flash download demonstrator to download the APP, it runs OK, and then re-power on the device, APP run into hard fault at once.

And I have print the CFSR=0x8200, HFSR=0x40000000, BFAR=0x5548535f(this value seems not right). I can not use BFAR to find the error place. So any one could give some suggestion?

[u_2man]

Hi..

Try to de-init RCC and SysTick before jump to application

  HAL_RCC_DeInit();

  SysTick->CTRL =0;

  SysTick ->LOAD =0;

  SysTick->VAL=0;

  JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);

  JumpToApplication = (pFunction) JumpAddress;

  /* Initialize user application's Stack Pointer */

  //SCB->VTOR = APPLICATION_ADDRESS;

  __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);

  JumpToApplication();

Usman

[cable gu]

Hi Usman,

Thanks for giving the suggestion, and it still goes into the hard fault, and the test code as below:

if (((*(__IO uint32_t*)ApplicationAddress) & 0x2FFE0000 ) == 0x20000000)

{

//__disable_interrupt();

__set_PRIMASK(1);

HAL_RCC_DeInit();

  SysTick->CTRL =0;

  SysTick ->LOAD =0;

SysTick->VAL=0;

//HAL_DeInit();

/* Move the 4 bytes to APP address */

JumpAddress = *(__IO uint32_t*) (ApplicationAddress + 4);

/* Point to the APP entry address */

Jump_To_Application = (pFunction) JumpAddress;

/* Reset the top of the stack point address */

__set_MSP(*(__IO uint32_t*) ApplicationAddress);

/* Jump to the reset function */

Jump_To_Application();

}

and now, I think the IAP code does not recycle the source, and the main in IAP is below:

int main(void)

{

HAL_Init();

/* Configure the system clock */

SystemClock_Config();

/* Initialize all configured peripherals */

MX_GPIO_Init();

JumpToApp();

/* Infinite loop */

/* USER CODE BEGIN WHILE */

while (1)

{

/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */

}

/* USER CODE END 3 */

}

Maybe there is still some interrupt running?

[u_2man]

Have you shift the interrupt vector on your application code?

[cable gu]

Yes, I did the shift. And normally, the IAP and APP runs OK. This hard fault appear just when I disable the USB host function in APP. So it confused me.

/* #define VECT_TAB_SRAM */

#define VECT_TAB_OFFSET 0x00006000U /*!< Vector Table base offset field. 

[Tesla DeLorean]

Looks to be loading a pointer with the content of an ASCII string.

​

Really should be looking at LR and PC values and understanding the specific code that is faulting. Look at .MAP file or listing file.​

[cable gu]

Yes, I think so. Just disable the USB function and the code size reduced, so the map changed, this may related with the problem. And I am looking at the assemble code now, I hope there will be find something.

[Tesla DeLorean]

Make sure you have a couple of KB for the stack

[cable gu]

Not GNU tools.

You said that the statics not initialized means there is static variable or function?