STM32CubeIDE 1.7, MCU package L4 Series 1.17 : VTOR is not initialized

[MFred.2]

In file generated by CubeMx when creating a new project, the SystemInit function does not set the register of the interrupt vector table (SCB-> VTOR) !!!

The default value is zero, which causes a crash on the first interrupt trigger, i.e. the code loops to an address 0x1FFFxxxx (system memory)

1. freshly generated code

/**

 * @brief Setup the microcontroller system.

 * @retval None

 */

void SystemInit(void)

{

#if defined(USER_VECT_TAB_ADDRESS)

 /* Configure the Vector Table location -------------------------------------*/

 SCB->VTOR = VECT_TAB_BASE_ADDRESS | VECT_TAB_OFFSET;

#endif

 /* FPU settings ------------------------------------------------------------*/

#if (__FPU_PRESENT == 1) && (__FPU_USED == 1)

 SCB->CPACR |= ((3UL << 20U)|(3UL << 22U)); /* set CP10 and CP11 Full Access */

#endif

 /* Reset the RCC clock configuration to the default reset state ------------*/

...

code of the previous version of the package

/**

 * @brief Setup the microcontroller system.

 * @param None

 * @retval None

 */

void SystemInit(void)

{

 /* FPU settings ------------------------------------------------------------*/

 #if (__FPU_PRESENT == 1) && (__FPU_USED == 1)

   SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); /* set CP10 and CP11 Full Access */

 #endif

 /* Reset the RCC clock configuration to the default reset state ------------*/

 /* Set MSION bit */

 RCC->CR |= RCC_CR_MSION;

 /* Reset CFGR register */

 RCC->CFGR = 0x00000000U;

 /* Reset HSEON, CSSON , HSION, and PLLON bits */

 RCC->CR &= 0xEAF6FFFFU;

 /* Reset PLLCFGR register */

 RCC->PLLCFGR = 0x00001000U;

 /* Reset HSEBYP bit */

 RCC->CR &= 0xFFFBFFFFU;

 /* Disable all interrupts */

 RCC->CIER = 0x00000000U;

 /* Configure the Vector Table location add offset address ------------------*/

#ifdef VECT_TAB_SRAM

 SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM */

#else

 SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */

#endif

}

why this register is no longer set with the default flash memory address ?

Thanks for your help

[Nitin]

Hello Imen.D,

I think “There is a change request which is deployed on all STM32 series:” is not true for STM32U5xx(STM32U585 to be precise) series. Neither USER_VECT_TAB_ADDRESS nor VECT_TAB_BASE_ADDRESS is defined in the package.

Below is the setup details:

1. Device is STM32U585.
2. ST provided BL is being used in the project.
3. This Project is TFM enabled.
4. Application is using threadX in non-secure zone.
5. There is no debugging possible with BL code(as of now in this setup, I tried but not able to put breakpoints in Appli Secure/Non secure code but application is crashing.

My problem seems as same as below screenshot and link.

https://community.st.com/t5/stm32-mcus-products/systick-handler-void-not-getting-called-with-stm32l431cbt6/td-p/615661

I have spent enough time on this and now got completely blank. Looking out for immediate support from #ST #STM32U5 #SysTick

As I am relatively new to the bootloaders, any help will be much appreciated.

Also, I have 5 system_stm32u5xx.c files in my project. Which are for Secure Appli, Non secure Appli, Secure loader, Non secure loader and SBSFU projects. And I am not sure which file I should work on, I believ it is either Secure Appli or Non secure Appli.

[OSpil.1]

Same on STM32L051. Weird change which makes vanilla CubeMX projects not working.
Spent few hours until found this thread.

[marcopiovesan9]

Hello,

on STM32F723 i noted that VTOR has an hw default value different than FLASH_BASE.

SysTick interrupt works.

If I Uncomment then the VTOR has value FLASH_BASE

SysTick interrupt also works 

I am confused.

Can you point me on a complete doc about VTOR ?

The PM0253 tell me that VTOR value at reset is Unknown (Table 50).  Does exist another documentation for VTOR reset value?

Thank you 

Marco