text: /**
   ******************************************************************************
   * @file    usart.c
   * @brief   This file provides code for the configuration
   *          of the USART instances.
   ******************************************************************************
   * @attention
   *
   * <h2><center>&copy; Copyright (c) 2021 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 "usart.h"
  
  /* USER CODE BEGIN 0 */
  
  /* USER CODE END 0 */
  
  UART_HandleTypeDef huart1;
  DMA_HandleTypeDef hdma_usart1_rx;
  DMA_HandleTypeDef hdma_usart1_tx;
  
  /* USART1 init function */
  
  void MX_USART1_UART_Init(void) {
  
    /* USER CODE BEGIN USART1_Init 0 */
  
    /* USER CODE END USART1_Init 0 */
  
    /* USER CODE BEGIN USART1_Init 1 */
  
    /* USER CODE END USART1_Init 1 */
    huart1.Instance = USART1;
    huart1.Init.BaudRate = 115200;
    huart1.Init.WordLength = UART_WORDLENGTH_8B;
    huart1.Init.StopBits = UART_STOPBITS_1;
    huart1.Init.Parity = UART_PARITY_NONE;
    huart1.Init.Mode = UART_MODE_TX_RX;
    huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart1.Init.OverSampling = UART_OVERSAMPLING_16;
    if (HAL_UART_Init(&huart1) != HAL_OK) {
      Error_Handler();
    }
    /* USER CODE BEGIN USART1_Init 2 */
  
    /* USER CODE END USART1_Init 2 */
  
  }
  
  void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle) {
  
    GPIO_InitTypeDef GPIO_InitStruct = { 0 };
    if (uartHandle->Instance == USART1) {
      /* USER CODE BEGIN USART1_MspInit 0 */
  
      /* USER CODE END USART1_MspInit 0 */
      /* USART1 clock enable */
      __HAL_RCC_USART1_CLK_ENABLE();
  
      __HAL_RCC_GPIOA_CLK_ENABLE();
      /**USART1 GPIO Configuration
       PA9     ------> USART1_TX
       PA10     ------> USART1_RX
       */
      GPIO_InitStruct.Pin = HM10_TX_Pin | HM10_RX_Pin;
      GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
      GPIO_InitStruct.Pull = GPIO_NOPULL;
      GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
      GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
      HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  
      /* USART1 DMA Init */
      /* USART1_RX Init */
      hdma_usart1_rx.Instance = DMA2_Stream2;
      hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4;
      hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
      hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
      hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
      hdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
      hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
      hdma_usart1_rx.Init.Mode = DMA_CIRCULAR;
      hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW;
      hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
      if (HAL_DMA_Init(&hdma_usart1_rx) != HAL_OK) {
        Error_Handler();
      }
  
      __HAL_LINKDMA(uartHandle, hdmarx, hdma_usart1_rx);
  
      /* USART1_TX Init */
      hdma_usart1_tx.Instance = DMA2_Stream7;
      hdma_usart1_tx.Init.Channel = DMA_CHANNEL_4;
      hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
      hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
      hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE;
      hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
      hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
      hdma_usart1_tx.Init.Mode = DMA_NORMAL;
      hdma_usart1_tx.Init.Priority = DMA_PRIORITY_LOW;
      hdma_usart1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
      if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK) {
        Error_Handler();
      }
  
      __HAL_LINKDMA(uartHandle, hdmatx, hdma_usart1_tx);
  
      /* USART1 interrupt Init */
      HAL_NVIC_SetPriority(USART1_IRQn, 5, 0);
      HAL_NVIC_EnableIRQ(USART1_IRQn);
      /* USER CODE BEGIN USART1_MspInit 1 */
  
      /* USER CODE END USART1_MspInit 1 */
    }
  }
  
  void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle) {
  
    if (uartHandle->Instance == USART1) {
      /* USER CODE BEGIN USART1_MspDeInit 0 */
  
      /* USER CODE END USART1_MspDeInit 0 */
      /* Peripheral clock disable */
      __HAL_RCC_USART1_CLK_DISABLE();
  
      /**USART1 GPIO Configuration
       PA9     ------> USART1_TX
       PA10     ------> USART1_RX
       */
      HAL_GPIO_DeInit(GPIOA, HM10_TX_Pin | HM10_RX_Pin);
  
      /* USART1 DMA DeInit */
      HAL_DMA_DeInit(uartHandle->hdmarx);
      HAL_DMA_DeInit(uartHandle->hdmatx);
  
      /* USART1 interrupt Deinit */
      HAL_NVIC_DisableIRQ(USART1_IRQn);
      /* USER CODE BEGIN USART1_MspDeInit 1 */
  
      /* USER CODE END USART1_MspDeInit 1 */
    }
  }
  
  /* USER CODE BEGIN 1 */
  
  /* USER CODE END 1 */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  