text: /* USER CODE BEGIN Header */
  /**
    ******************************************************************************
    * @file           : main.c
    * @brief          : Main program body
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2021 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 "cmsis_os.h"
  #include "usb_otg.h"
  #include "gpio.h"
  
  /* Private includes ----------------------------------------------------------*/
  /* USER CODE BEGIN Includes */
  #include "usb_device.h"
  #include "usbd_cdc_acm_if.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);
  void MX_FREERTOS_Init(void);
  /* USER CODE BEGIN PFP */
  
  /* USER CODE END PFP */
  
  /* Private user code ---------------------------------------------------------*/
  /* USER CODE BEGIN 0 */
  
  int _write(int file, char *ptr, int len) {
      CDC_Transmit(0, (uint8_t *)ptr, len);
      return len;
  }
  
  /* 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_USB_OTG_FS_PCD_Init();
    /* USER CODE BEGIN 2 */
    MX_USB_DEVICE_Init();
    /* USER CODE END 2 */
  
    /* Init scheduler */
    osKernelInitialize();  /* Call init function for freertos objects (in freertos.c) */
    MX_FREERTOS_Init();
    /* Start scheduler */
    osKernelStart();
  
    /* We should never get here as control is now taken by the scheduler */
    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
  
    uint32_t now = 0, last_blink = 0;
  
    while (1)
    {
  
  	  now = HAL_GetTick();
  
  	  if (now - last_blink >= 500) {
  		  HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
  
  		  last_blink = now;
  	  }
  
      /* 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};
  
    /** Configure the main internal regulator output voltage
    */
    __HAL_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
    /** Initializes the RCC Oscillators according to the specified parameters
    * in the RCC_OscInitTypeDef structure.
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
    RCC_OscInitStruct.HSEState = RCC_HSE_ON;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLM = 25;
    RCC_OscInitStruct.PLL.PLLN = 192;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
    RCC_OscInitStruct.PLL.PLLQ = 4;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
      Error_Handler();
    }
    /** Initializes the CPU, AHB and APB buses clocks
    */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                                |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK)
    {
      Error_Handler();
    }
  }
  
  /* USER CODE BEGIN 4 */
  
  /* USER CODE END 4 */
  
  /**
    * @brief  Period elapsed callback in non blocking mode
    * @note   This function is called  when TIM11 interrupt took place, inside
    * HAL_TIM_IRQHandler(). It makes a direct call to HAL_IncTick() to increment
    * a global variable "uwTick" used as application time base.
    * @param  htim : TIM handle
    * @retval None
    */
  void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
  {
    /* USER CODE BEGIN Callback 0 */
  
    /* USER CODE END Callback 0 */
    if (htim->Instance == TIM11) {
      HAL_IncTick();
    }
    /* USER CODE BEGIN Callback 1 */
  
    /* USER CODE END Callback 1 */
  }
  
  /**
    * @brief  This function is executed in case of error occurrence.
    * @retval None
    */
  void Error_Handler(void)
  {
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
    __disable_irq();
    while (1)
    {
    }
    /* 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,
       ex: 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****/
  