Address jump function

[NandhakumarGanesan]

Hi,

 in my project I am try to jump 0x8002000 address . but I am facing some failure,

typedef void (*FunctionPointer)(void);

// Example function to jump to another address

void jumpToAddress(uint32_t * address) {

//address =0x800029c;

    // Define a function pointer with the address

    FunctionPointer jumpFunction = (FunctionPointer)address;

    //void (*jumpFunction)(void) = (void (*)(void))address;

    // Disable interrupts if needed

       __disable_irq();

       // Set the program counter (PC) to the new address

       SCB->VTOR = address;

       // Execute an instruction to ensure that the jump takes effect

       __DSB();

       __ISB();

       // Re-enable interrupts if needed

       __enable_irq();

    // Call the function via the function pointer

    jumpFunction();

}

this is my address jump function .

int main(void)
{
/* USER CODE BEGIN 1 */

/* USER CODE END 1 */

/* MCU Configuration--------------------------------------------------------*/

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();

/* USER CODE BEGIN Init */

/* USER CODE END Init */

/* Configure the system clock */
SystemClock_Config();

/* USER CODE BEGIN SysInit */

/* USER CODE END SysInit */

/* Initialize all configured peripherals */
MX_GPIO_Init();
/* USER CODE BEGIN 2 */
//myFunction();
jumpToAddress(0x8002000);

/* USER CODE END 2 */

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}

this is my main function.

this image is my .map file for my project.

I am try to jump 0x8002000 address my project  shown ,

this output. so kindly help to me.

thanks

[Tesla DeLorean · Accepted solution]

Vector tables need to be on 512-byte boundaries.

They are tables of addresses, not code.

Thr function pointer needs to be odd, per how the CMx processor indicates 16-bit Thumb code.

Have a working/reporting HardFault_Handler so you know it got there.

Learn to use the debugger so you can step the code and understand behaviour and failure.

[NandhakumarGanesan]

thanks for your response.

I am a beginner for ARM  Based controller. So kindly  explain for this address jumping process or kindly give sample code for this process or kindly share document for this process.

[NandhakumarGanesan]

hi,

I am try below  mentioned method in way Hardfaulthandler error is happend.

kindly help to me. I am struggling  past 4 days .