Add watch dog timer

firmware/Src/init.c

@@ -90,6 +90,7 @@ void init(void)
   MX_GPIO_Init();
   MX_ADC_Init();
   MX_USB_DEVICE_Init();
+  MX_IWDG_Init();
   /* USER CODE BEGIN 2 */
 
   /* USER CODE END 2 */
@@ -107,10 +108,12 @@ void SystemClock_Config(void)
 
   /** Initializes the CPU, AHB and APB busses clocks
   */
-  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI14|RCC_OSCILLATORTYPE_HSI48;
+  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI14|RCC_OSCILLATORTYPE_HSI48
+                              |RCC_OSCILLATORTYPE_LSI;
   RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
   RCC_OscInitStruct.HSI14State = RCC_HSI14_ON;
   RCC_OscInitStruct.HSI14CalibrationValue = 16;
+  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {

firmware/Src/iwdg.c

@@ -0,0 +1,48 @@
+/**
+  ******************************************************************************
+  * File Name          : IWDG.c
+  * Description        : This file provides code for the configuration
+  *                      of the IWDG instances.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under Ultimate Liberty license
+  * SLA0044, the "License"; You may not use this file except in compliance with
+  * the License. You may obtain a copy of the License at:
+  *                             www.st.com/SLA0044
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "iwdg.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+IWDG_HandleTypeDef hiwdg;
+
+/* IWDG init function */
+void MX_IWDG_Init(void)
+{
+
+  hiwdg.Instance = IWDG;
+  hiwdg.Init.Prescaler = IWDG_PRESCALER_4;
+  hiwdg.Init.Window = 4095;
+  hiwdg.Init.Reload = 4095;
+  if (HAL_IWDG_Init(&hiwdg) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/