274 lines
7.2 KiB
C
274 lines
7.2 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file IWDG/IWDG_WindowMode/Src/main.c
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* @author MCD Application Team
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* @brief This sample code shows how to use the IWDG HAL API
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* to update at regular period the IWDG counter and how to simulate a
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* software fault generating an MCU IWDG reset on expiry of a
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* programmed time period.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2020 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/* Private includes ----------------------------------------------------------*/
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/* USER CODE BEGIN Includes */
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/* USER CODE END Includes */
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/* Private typedef -----------------------------------------------------------*/
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/* USER CODE BEGIN PTD */
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/* USER CODE END PTD */
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/* Private define ------------------------------------------------------------*/
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/* USER CODE BEGIN PD */
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#define IWDG_WINDOW 800; /* 400 ms */
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#define IWDG_RELOAD 1561; /* 762 ms */
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/* USER CODE END PD */
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/* Private macro -------------------------------------------------------------*/
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/* USER CODE BEGIN PM */
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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IWDG_HandleTypeDef hiwdg;
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/* USER CODE BEGIN PV */
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uint32_t IwdgStatus = 0;
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/* In while loop, time to wait before refresh */
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uint32_t WaitingDelay = 0;
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void MX_IWDG_Init(void);
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/* USER CODE BEGIN PFP */
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/* MCU Configuration--------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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HAL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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/* Configure LED1 and LED3 */
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BSP_LED_Init(LED1);
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BSP_LED_Init(LED3);
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/*##-1- Check if the system has resumed from IWDG reset ####################*/
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if (__HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST) != 0x00u)
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{
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/* IWDGRST flag set: Turn LED1 on and set IwdgStatus */
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IwdgStatus = 1;
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BSP_LED_On(LED1);
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/* Insert 4s delay */
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HAL_Delay(4000);
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/* Prior to clear IWDGRST flag: Turn LED1 off */
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BSP_LED_Off(LED1);
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}
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/* Clear reset flags anyway */
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__HAL_RCC_CLEAR_RESET_FLAGS();
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IwdgStatus = 0;
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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MX_IWDG_Init();
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/* USER CODE BEGIN 2 */
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/* Configure User push-button (B1) */
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BSP_PB_Init(BUTTON_SW1, BUTTON_MODE_EXTI);
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/* Initial delay will be 450 ms in order to be inside the window */
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WaitingDelay = 450;
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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while (1)
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{
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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/* Toggle LED1 */
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BSP_LED_Toggle(LED1);
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HAL_Delay(WaitingDelay);
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/* Refresh IWDG: reload counter */
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if(HAL_IWDG_Refresh(&hiwdg) != HAL_OK)
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{
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/* Refresh Error */
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Error_Handler();
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}
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}
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/* USER CODE END 3 */
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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/** Configure the main internal regulator output voltage
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*/
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_MSI;
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RCC_OscInitStruct.MSIState = RCC_MSI_ON;
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RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_11;
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RCC_OscInitStruct.LSIDiv = RCC_LSI_DIV1;
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RCC_OscInitStruct.LSIState = RCC_LSI_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK3|RCC_CLOCKTYPE_HCLK
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|RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
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|RCC_CLOCKTYPE_PCLK2;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.AHBCLK3Divider = RCC_SYSCLK_DIV1;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
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{
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Error_Handler();
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}
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}
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/**
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* @brief IWDG Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_IWDG_Init(void)
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{
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/* USER CODE BEGIN IWDG_Init 0 */
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/* USER CODE END IWDG_Init 0 */
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/* USER CODE BEGIN IWDG_Init 1 */
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/* USER CODE END IWDG_Init 1 */
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hiwdg.Instance = IWDG;
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hiwdg.Init.Prescaler = IWDG_PRESCALER_16;
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hiwdg.Init.Window = IWDG_WINDOW;
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hiwdg.Init.Reload = IWDG_RELOAD;
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if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN IWDG_Init 2 */
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/* USER CODE END IWDG_Init 2 */
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}
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/* USER CODE BEGIN 4 */
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/**
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* @brief EXTI line detection callback to decrease waiting delay. That will make
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refresh being outside window value.
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* @param GPIO_Pin: Specifies the port pin connected to corresponding EXTI line.
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* @retval None
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*/
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void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
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{
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if(GPIO_Pin == BUTTON_SW1_PIN)
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{
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/* waiting 200 ms to be above window value on next refresh */
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WaitingDelay = 200;
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}
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}
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @retval None
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*/
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void Error_Handler(void)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* Turn LED3 on */
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BSP_LED_On(LED3);
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IwdgStatus = 0xE;
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/* Infinite loop */
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while(1)
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{
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}
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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