text: /* USER CODE BEGIN Header */
  /**
    ******************************************************************************
    * @file           : main.c
    * @brief          : Main program body
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
    * All rights reserved.</center></h2>
    *
    * This software component is licensed by ST under BSD 3-Clause license,
    * the "License"; You may not use this file except in compliance with the
    * License. You may obtain a copy of the License at:
    *                        opensource.org/licenses/BSD-3-Clause
    *
    ******************************************************************************
    */
  /* USER CODE END Header */
  
  /* Includes ------------------------------------------------------------------*/
  #include "main.h"
  #include "adc.h"
  #include "dma.h"
  #include "i2c.h"
  #include "rtc.h"
  #include "spi.h"
  #include "usart.h"
  #include "gpio.h"
  
  /* Private includes ----------------------------------------------------------*/
  /* USER CODE BEGIN Includes */
  #include <limits.h>
  #include <stdarg.h>
  #include <stdio.h>
  
  /* USER CODE END Includes */
  
  /* Private typedef -----------------------------------------------------------*/
  /* USER CODE BEGIN PTD */
  
  /* USER CODE END PTD */
  
  /* Private define ------------------------------------------------------------*/
  /* USER CODE BEGIN PD */
  /* USER CODE END PD */
  
  /* Private macro -------------------------------------------------------------*/
  /* USER CODE BEGIN PM */
  
  /* USER CODE END PM */
  
  /* Private variables ---------------------------------------------------------*/
  
  /* USER CODE BEGIN PV */
  
  /* USER CODE END PV */
  
  /* Private function prototypes -----------------------------------------------*/
  void SystemClock_Config(void);
  /* USER CODE BEGIN PFP */
  
  /* USER CODE END PFP */
  
  /* Private user code ---------------------------------------------------------*/
  /* USER CODE BEGIN 0 */
  #pragma clang diagnostic push
  #pragma ide diagnostic ignored "bugprone-reserved-identifier"
  __unused int _write(__unused int handle, char *data, int size )
  {
      HAL_UART_Transmit(&huart2, (uint8_t*)data, size, size);
      return size;
  }
  #pragma clang diagnostic pop
  
  void reportError(const char *format, ...) {
      va_list(args);
      va_start(args, format);
      vprintf(format, args);
      va_end(args);
      MX_GPIO_Init();
      MX_USART2_UART_Init();
  #pragma clang diagnostic push
  #pragma ide diagnostic ignored "EndlessLoop"
      for (int i = 0; i < 100; i++) {
          HAL_GPIO_TogglePin(LD3_GPIO_Port, LD3_Pin);
          //Interrupts might be disabled, let's use delay loop instead of delay functions
          for (long long j = 0; j < 300000; ++j) {
              __NOP();
          }
      }
      HAL_NVIC_SystemReset();
      while (1);
  #pragma clang diagnostic pop
  }
  
  void halError(const char * funcName, const HAL_StatusTypeDef status) {
      if (status != HAL_OK) {
          reportError("Function: %s; HAL reported: %d\r\n", funcName, status);
      }
  }
  /**
    * @brief  This function provides delay in milliseconds, optimized for energy consumption using Sleep mode
    *
    * @param  Delay specifies the delay time length, in milliseconds.
    * @retval None
    */
  void HAL_Delay(uint32_t Delay)
  {
    uint32_t tickstart = HAL_GetTick();
    uint32_t wait = Delay;
  
    /* Add freq to guarantee minimum wait */
    if (wait < HAL_MAX_DELAY)
    {
      wait += (uint32_t)(uwTickFreq);
    }
  
    while((HAL_GetTick() - tickstart) < wait)
    {
      __WFI();
    }
  }
  
  
  /* USER CODE END 0 */
  
  /**
    * @brief  The application entry point.
    * @retval int
    */
  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_DMA_Init();
    MX_RTC_Init();
    MX_USART2_UART_Init();
    MX_I2C1_Init();
    MX_SPI1_Init();
    MX_ADC1_Init();
    /* USER CODE BEGIN 2 */
    __HAL_RCC_HSI48_DISABLE();
    __HAL_RCC_LSI_DISABLE();
    __HAL_RCC_HSI_DISABLE();
    /* USER CODE END 2 */
  
    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    if (HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 1800, RTC_WAKEUPCLOCK_CK_SPRE_16BITS) != HAL_OK)
    {
      Error_Handler();
    }
    cppMain(); //Infinite loop is implemented in C++ part
      /* USER CODE END WHILE */
  
      /* USER CODE BEGIN 3 */
    /* USER CODE END 3 */
  }
  
  /**
    * @brief System Clock Configuration
    * @retval None
    */
  void SystemClock_Config(void)
  {
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
    RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  
    /** Configure LSE Drive Capability 
    */
    HAL_PWR_EnableBkUpAccess();
    __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);
    /** Initializes the CPU, AHB and APB busses clocks 
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE|RCC_OSCILLATORTYPE_MSI;
    RCC_OscInitStruct.LSEState = RCC_LSE_ON;
    RCC_OscInitStruct.MSIState = RCC_MSI_ON;
    RCC_OscInitStruct.MSICalibrationValue = 0;
    RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_9;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
      Error_Handler();
    }
    /** Initializes the CPU, AHB and APB busses clocks 
    */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                                |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
    {
      Error_Handler();
    }
    PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_USART2
                                |RCC_PERIPHCLK_I2C1|RCC_PERIPHCLK_ADC;
    PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_SYSCLK;
    PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_SYSCLK;
    PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_SYSCLK;
    PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
    {
      Error_Handler();
    }
    /** Configure the main internal regulator output voltage 
    */
    if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE2) != HAL_OK)
    {
      Error_Handler();
    }
    /** Enable MSI Auto calibration 
    */
    HAL_RCCEx_EnableMSIPLLMode();
  }
  
  /* USER CODE BEGIN 4 */
  
  /* USER CODE END 4 */
  
  /**
    * @brief  This function is executed in case of error occurrence.
    * @retval None
    */
  void Error_Handler(void)
  {
    /* USER CODE BEGIN Error_Handler_Debug */
    reportError(__FUNCTION__ );
    /* USER CODE END Error_Handler_Debug */
  }
  
  #ifdef  USE_FULL_ASSERT
  /**
    * @brief  Reports the name of the source file and the source line number
    *         where the assert_param error has occurred.
    * @param  file: pointer to the source file name
    * @param  line: assert_param error line source number
    * @retval None
    */
  void assert_failed(uint8_t *file, uint32_t line)
  { 
    /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
       tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */
  }
  #endif /* USE_FULL_ASSERT */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  