I am working on STM32L431RCT6 microcontroller. Similar changes tried on STM32L053C8T6 also.
Using custom hardware for product development and hardware is validated.
I facing issue, bootloader not jumping to application. Instead it's creating hardfault: HardFault_Handler() after JumpToApplication().
Please let me know what can be made OR what's missing to switch to application successfully.
Here is sample code provided for reference.
Bootloader and Application code changes:
1. Linker file *.ld changes:
MEMORY
{
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 48K
RAM2 (xrw) : ORIGIN = 0x10000000, LENGTH = 16K
FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 16K
}
2. Bootloader jump application code
#define ADDRESS_START_APP 0x08004000U
#define BOOTLOADER_WAIT_TIME 5000
typedef void (*pFunction)(void);
pFunction JumpToApplication;
uint32_t* pAddrApp = NULL;
uint32_t* pAddrStack = NULL;
void SwitchToApplication(void)
{
pAddrApp = ADDRESS_START_APP + 0x4U;
pAddrStack = ADDRESS_START_APP;
JumpToApplication = (pFunction) *pAddrApp;
HAL_RCC_DeInit();
HAL_DeInit();
/* reset all interrupts to default */
__disable_irq();
SysTick->CTRL = 0;
SysTick->LOAD = 0;
SysTick->VAL = 0;
__set_MSP(*pAddrStack);
JumpToApplication();
}
Application Firmware changes:
1. Linker file *.ld changes:
MEMORY
{
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 48K
RAM2 (xrw) : ORIGIN = 0x10000000, LENGTH = 16K
FLASH (rx) : ORIGIN = 0x8004000, LENGTH = 240K
}
2. system_stm32l4xx.c changes
#define USER_VECT_TAB_ADDRESS
#if defined(USER_VECT_TAB_ADDRESS)
/*!< Uncomment the following line if you need to relocate your vector Table
in Sram else user remap will be done in Flash. */
/* #define VECT_TAB_SRAM */
#if defined(VECT_TAB_SRAM)
#define VECT_TAB_BASE_ADDRESS SRAM1_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
#else
#define VECT_TAB_BASE_ADDRESS FLASH_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#define VECT_TAB_OFFSET 0x00004000U /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
#endif /* VECT_TAB_SRAM */
#endif /* USER_VECT_TAB_ADDRESS */
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
}
3. main.c
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_11);
HAL_Delay(1000);
}
Thank you.
