STM32 Bootloader Vector table relocation problem which is linked with CubeMX version

[BBİNG.11]

Hello All,

I need to start the flash program from 0x08020000 origin. I have updated the linker file with that value as you can see at below.

/* Memories definition */
MEMORY
{
  RAM    (xrw)    : ORIGIN = 0x20000000,   LENGTH = 64K
  FLASH    (rx)    : ORIGIN = 0x8020000,   LENGTH = 128K //previous one was 256K
}

Indeed, I have updated the vector table register which is VTOR from system_stm32f4xx.c. You can see the SystemInit function at below.

/*!< Uncomment the following line if you need to relocate your vector Table in
     Internal SRAM. */
/* #define VECT_TAB_SRAM */
#define VECT_TAB_OFFSET 0x00 /*!< Vector Table base offset field. //0x00
                                   This value must be a multiple of 0x200. */
/******************************************************************************/
 
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 HSION bit */
    RCC->CR |= (uint32_t)0x00000001;
 
    /* Reset CFGR register */
    RCC->CFGR = 0x00000000;
 
    /* Reset HSEON, CSSON and PLLON bits */
    RCC->CR &= (uint32_t)0xFEF6FFFF;
 
    /* Reset PLLCFGR register */
    RCC->PLLCFGR = 0x24003010;
 
    /* Reset HSEBYP bit */
    RCC->CR &= (uint32_t)0xFFFBFFFF;
 
    /* Disable all interrupts */
    RCC->CIR = 0x00000000;
 
#if defined (DATA_IN_ExtSRAM) || defined (DATA_IN_ExtSDRAM)
  SystemInit_ExtMemCtl(); 
#endif /* DATA_IN_ExtSRAM || DATA_IN_ExtSDRAM */
 
  /* 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 = 0x08020000UL | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH */
#endif
}

When I configure and compile this project with STM32CubeMX version 5.0.0, everything works fine. However, when I configure and compile this project with STM32CubeMX version 6.1.1, I receive independent watchdog timer reset. What would be the source of problem? It costs my 2-3 days approximately. How can i solve the problem? Thanks in advance.

[BBİNG.11]

I have researched on the internet, but I can not find anything about the issue. Could you please help me about the problem? What may be root cause of the problem?

Here is the RCC configuration:

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
 
  /** Configure the main internal regulator output voltage
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = 8;
  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLM = 8;
  RCC_OscInitStruct.PLL.PLLN = 84;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
  PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
}

Thanks in advance.

[BBİNG.11]

I have detected the error source. But, I don't understand why I receive such an error. Do you have any idea?

/*-------------------------------- PLL Configuration -----------------------*/
if((RCC_OscInitStruct->PLL.PLLState) == RCC_PLL_OFF)
      {
        return HAL_ERROR;
      }
      else
      {
        /* Do not return HAL_ERROR if request repeats the current configuration */
        pll_config = RCC->PLLCFGR;
        if((READ_BIT(pll_config, RCC_PLLCFGR_PLLSRC) != RCC_OscInitStruct->PLL.PLLSource) ||
           (READ_BIT(pll_config, RCC_PLLCFGR_PLLM) != RCC_OscInitStruct->PLL.PLLM) ||
           (READ_BIT(pll_config, RCC_PLLCFGR_PLLN) != RCC_OscInitStruct->PLL.PLLN) ||
           (READ_BIT(pll_config, RCC_PLLCFGR_PLLP) != RCC_OscInitStruct->PLL.PLLP) ||
           (READ_BIT(pll_config, RCC_PLLCFGR_PLLQ) != RCC_OscInitStruct->PLL.PLLQ))
        {
          return HAL_ERROR;   // <- HAL_ERROR is returned.
        }
 

in stm32f4xx_hal.rcc.c, HAL_ERROR is returned. There is a problem about PLL configuration as far as I understand. These registers don't get along with compared values. Could you please help me?

Thanks in advance.

[Tesla DeLorean]

Probably because your loader has already started and is running from the PLL, but with different parameters.

You can't change the PLL settings on-the-fly, you need to switch to a different source first.

Better to set the appropriate clocks in the loader, and then not do-over in the application.