STM32 擦除内部 FLASH 时间过长导致 IWDG 复位

int main(void)

{

/* USER CODE BEGIN 1 */

uint32_t beginTick =0,endTick =0;

uint32_t curSysTick=0,endSysTick =0;

/* USER CODE END 1 */

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

/* Reset of all peripherals, Initializes the Flash interface and the Systick. */

HAL_Init();

/* Configure the system clock */

SystemClock_Config();

/* Initialize all configured peripherals */

MX_GPIO_Init();

MX_IWDG_Init();

/* USER CODE BEGIN 2 */

if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST) != RESET) //如果是看门狗复位

{

/* Clear reset flags */

HAL_GPIO_WritePin(GPIOB,GPIO_PIN_7,GPIO_PIN_SET);

__HAL_RCC_CLEAR_RESET_FLAGS();

Error_Handler();

}

HAL_FLASH_Unlock();

/* Fill EraseInit structure*/

EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;

EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;

EraseInitStruct.Sector = FLASH_SECTOR_8;

EraseInitStruct.NbSectors = 1;

// if(HAL_FLASHEx_Erase(&EraseInitStruct, &SECTORError) != HAL_OK)

// {

// Error_Handler();

// }

beginTick =HAL_GetTick();

HAL_GPIO_WritePin(GPIOC,GPIO_PIN_8,GPIO_PIN_SET);

curSysTick =SysTick->VAL;

if(HAL_FLASHEx_Erase_IT(&EraseInitStruct)!= HAL_OK) //擦除 sector8

{

Error_Handler();

}

endSysTick =SysTick->VAL; // curSysTick, endSysTick 保存着 SysTick 寄存器的值

HAL_GPIO_WritePin(GPIOC,GPIO_PIN_8,GPIO_PIN_RESET); //PC8 波形表示擦除 FLASH 的时间间隔

endTick =HAL_GetTick(); // beginTick, endTick 保存着全局变量 Tick 的值

g_TickCount =endTick -beginTick; //变量 Tick 的时间差

HAL_IWDG_Refresh(&hiwdg);

/* USER CODE END 2 */

/* Infinite loop */

/* USER CODE BEGIN WHILE */

while (1)

{

/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */

if (HAL_IWDG_Refresh(&hiwdg) != HAL_OK)

{

/* Refresh Error */

Error_Handler();

}

HAL_Delay(10);

}

/* USER CODE END 3 */

}

void HAL_SYSTICK_Callback(void)

{

HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_11);//用 PA11 来检测 SysTick 波形

}