MCU: STM32F767ZI-NUCLEO
STM32CubeIDE Version 1.19.0
Hello Everyone!
We are trying to make the MCU enter DFU mode through firmware (without connecting BOOT0 and VDD). DFU mode works well, but we do not know how to determine USBD_DFU_APP_DEFAULT_ADD and USBD_DFU_APP_MASK (0x2FFE0000) in order to exit DFU mode in the following code(Line 37 in the code always fails.).
typedef void (*pFunction)(void);
pFunction JumpToApplication;
uint32_t JumpAddress;
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();
MX_USB_DEVICE_Init();
/* USER CODE BEGIN 2 */
if(HAL_GPIO_ReadPin(DFU_Button_GPIO_Port, DFU_Button_Pin) == GPIO_PIN_RESET)
{
uint32_t temp = *(__IO uint32_t*)USBD_DFU_APP_DEFAULT_ADD;
if(((*(__IO uint32_t*)USBD_DFU_APP_DEFAULT_ADD) & USBD_DFU_APP_MASK ) == USBD_DFU_APP_MASK )
{
/* Jump to user application */
JumpAddress = *(__IO uint32_t*) (USBD_DFU_APP_DEFAULT_ADD + 4);
JumpToApplication = (pFunction) JumpAddress;
/* Initialize user application's Stack Pointer */
__set_MSP(*(__IO uint32_t*) USBD_DFU_APP_DEFAULT_ADD);
JumpToApplication();
}
}
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}1. USBD_DFU_APP_DEFAULT_ADD
We try to set USBD_DFU_APP_DEFAULT_ADD to 0x08010000 based on the following information.
(1).Build Analyzer
(2).Flash Mapping
//-------------------------------------------------------------------------------------------------------
2.USBD_DFU_APP_MASK
We tried to find some information and found two different values: 0x2FFE0000 and 0x2FFC0000. I do not know how to choose between them to make the function work.
We will be grateful for any help you can provide.
