text: /**
   ******************************************************************************
   * @file    stm32f0xx_hal_uart.c
   * @author  MCD Application Team
   * @brief   UART HAL module driver.
   *          This file provides firmware functions to manage the following
   *          functionalities of the Universal Asynchronous Receiver Transmitter (UART) peripheral:
   *           + Initialization and de-initialization functions
   *           + IO operation functions
   *           + Peripheral Control functions
   *           + Peripheral State and Errors functions
   *
   * @verbatim
   * ===============================================================================
   ##### How to use this driver #####
   #####===============================================================================
   #####[..]
   #####The UART HAL driver can be used as follows:
   #####
   #####(#) Declare a UART_HandleTypeDef handle structure (eg. UART_HandleTypeDef huart).
   #####(#) Initialize the UART low level resources by implementing the HAL_UART_MspInit() API:
   #####  (++) Enable the USARTx interface clock.
   #####  (++) UART pins configuration:
   #####      (+++) Enable the clock for the UART GPIOs.
   #####      (+++) Configure these UART pins as alternate function pull-up.
   #####  (++) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
   #####       and HAL_UART_Receive_IT() APIs):
   #####      (+++) Configure the USARTx interrupt priority.
   #####      (+++) Enable the NVIC USART IRQ handle.
   #####  (++) UART interrupts handling:
   #####        -@@-  The specific UART interrupts (Transmission complete interrupt,
   #####          RXNE interrupt and Error Interrupts) are managed using the macros
   #####          __HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit and receive processes.
   #####  (++) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
   #####       and HAL_UART_Receive_DMA() APIs):
   #####      (+++) Declare a DMA handle structure for the Tx/Rx channel.
   #####      (+++) Enable the DMAx interface clock.
   #####      (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters.
   #####      (+++) Configure the DMA Tx/Rx channel.
   #####      (+++) Associate the initialized DMA handle to the UART DMA Tx/Rx handle.
   #####      (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.
   #####
   #####(#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
   #####  flow control and Mode (Receiver/Transmitter) in the huart handle Init structure.
   #####
   #####(#) If required, program UART advanced features (TX/RX pins swap, auto Baud rate detection,...)
   #####  in the huart handle AdvancedInit structure.
   #####
   #####(#) For the UART asynchronous mode, initialize the UART registers by calling
   #####  the HAL_UART_Init() API.
   #####
   #####(#) For the UART Half duplex mode, initialize the UART registers by calling
   #####  the HAL_HalfDuplex_Init() API.
   #####
   #####(#) For the UART Multiprocessor mode, initialize the UART registers
   #####  by calling the HAL_MultiProcessor_Init() API.
   #####
   #####(#) For the UART RS485 Driver Enabled mode, initialize the UART registers
   #####  by calling the HAL_RS485Ex_Init() API.
   #####
   #####[..]
   #####(@) These APIs(HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_MultiProcessor_Init(),
   #####  also configure the low level Hardware GPIO, CLOCK, CORTEX...etc) by
   #####  calling the customized HAL_UART_MspInit() API.
   #####
   #####[..]
   #####[..] Three operation modes are available within this driver :
   #####
   *** Polling mode IO operation ***
   *** =================================
   *** [..]
   ***   (+) Send an amount of data in blocking mode using HAL_UART_Transmit()
   ***   (+) Receive an amount of data in blocking mode using HAL_UART_Receive()
   ***
   *** Interrupt mode IO operation ***
   *** ===================================
   *** [..]
   ***   (+) Send an amount of data in non blocking mode using HAL_UART_Transmit_IT()
   ***   (+) At transmission end of half transfer HAL_UART_TxHalfCpltCallback is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_TxHalfCpltCallback
   ***   (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_TxCpltCallback
   ***   (+) Receive an amount of data in non blocking mode using HAL_UART_Receive_IT()
   ***   (+) At reception end of half transfer HAL_UART_RxHalfCpltCallback is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_RxHalfCpltCallback
   ***   (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_RxCpltCallback
   ***   (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_ErrorCallback
   ***
   *** DMA mode IO operation ***
   *** ==============================
   *** [..]
   ***   (+) Send an amount of data in non blocking mode (DMA) using HAL_UART_Transmit_DMA()
   ***   (+) At transmission end of half transfer HAL_UART_TxHalfCpltCallback is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_TxHalfCpltCallback
   ***   (+) At transmission end of transfer HAL_UART_TxCpltCallback is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_TxCpltCallback
   ***   (+) Receive an amount of data in non blocking mode (DMA) using HAL_UART_Receive_DMA()
   ***   (+) At reception end of half transfer HAL_UART_RxHalfCpltCallback is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_RxHalfCpltCallback
   ***   (+) At reception end of transfer HAL_UART_RxCpltCallback is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_RxCpltCallback
   ***   (+) In case of transfer Error, HAL_UART_ErrorCallback() function is executed and user can
   ***        add his own code by customization of function pointer HAL_UART_ErrorCallback
   ***   (+) Pause the DMA Transfer using HAL_UART_DMAPause()
   ***   (+) Resume the DMA Transfer using HAL_UART_DMAResume()
   ***   (+) Stop the DMA Transfer using HAL_UART_DMAStop()
   ***
   *** UART HAL driver macros list ***
   *** =============================================
   *** [..]
   ***   Below the list of most used macros in UART HAL driver.
   ***
   ***  (+) __HAL_UART_ENABLE: Enable the UART peripheral
   ***  (+) __HAL_UART_DISABLE: Disable the UART peripheral
   ***  (+) __HAL_UART_GET_FLAG : Check whether the specified UART flag is set or not
   ***  (+) __HAL_UART_CLEAR_FLAG : Clear the specified UART pending flag
   ***  (+) __HAL_UART_ENABLE_IT: Enable the specified UART interrupt
   ***  (+) __HAL_UART_DISABLE_IT: Disable the specified UART interrupt
   ***
   *** [..]
   ***   (@) You can refer to the UART HAL driver header file for more useful macros
   ***
   ***@endverbatim
   ******************************************************************************
   * @attention
   *
   * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
   *
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
   *   1. Redistributions of source code must retain the above copyright notice,
   *      this list of conditions and the following disclaimer.
   *   2. Redistributions in binary form must reproduce the above copyright notice,
   *      this list of conditions and the following disclaimer in the documentation
   *      and/or other materials provided with the distribution.
   *   3. Neither the name of STMicroelectronics nor the names of its contributors
   *      may be used to endorse or promote products derived from this software
   *      without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   ******************************************************************************
   */
  
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f0xx_hal.h"
  
  /** @addtogroup STM32F0xx_HAL_Driver
   * @{
   */
  
  /** @defgroup UART UART
   * @brief HAL UART module driver
   * @{
   */
  
  #ifdef HAL_UART_MODULE_ENABLED
  
  /* Private typedef -----------------------------------------------------------*/
  /* Private define ------------------------------------------------------------*/
  
  /** @defgroup UART_Private_Constants UART Private Constants
   * @{
   */
  # define UART_CR1_FIELDS \
      ((uint32_t) (USART_CR1_M | USART_CR1_PCE | USART_CR1_PS   \
            | USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8)) /*!< UART or USART CR1 fields of parameters set by UART_SetConfig API */
  
  /**
   * @}
   */
  
  /* Private macros ------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private function prototypes -----------------------------------------------*/
  
  /** @addtogroup UART_Private_Functions
   * @{
   */
  static void UART_EndTxTransfer(UART_HandleTypeDef *huart);
  static void UART_EndRxTransfer(UART_HandleTypeDef *huart);
  static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
  static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
  static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
  static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
  static void UART_DMAError(DMA_HandleTypeDef *hdma);
  static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
  static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
  static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
  static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
  static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
  HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
  HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
  HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
  
  /**
   * @}
   */
  
  /* Exported functions --------------------------------------------------------*/
  
  /** @defgroup UART_Exported_Functions UART Exported Functions
   * @{
   */
  
  /** @defgroup UART_Exported_Functions_Group1 Initialization and de-initialization functions
   *  @brief    Initialization and Configuration functions
   *
   * @verbatim
   * ===============================================================================
   ##### Initialization and Configuration functions #####
   #####===============================================================================
   #####[..]
   #####This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
   #####in asynchronous mode.
   #####(+) For the asynchronous mode the parameters below can be configured:
   #####  (++) Baud Rate
   #####  (++) Word Length
   #####  (++) Stop Bit
   #####  (++) Parity
   #####  (++) Hardware flow control
   #####  (++) Receiver/transmitter modes
   #####  (++) Over Sampling Method
   #####  (++) One-Bit Sampling Method
   #####(+) For the asynchronous mode, the following advanced features can be configured as well:
   #####  (++) TX and/or RX pin level inversion
   #####  (++) data logical level inversion
   #####  (++) RX and TX pins swap
   #####  (++) RX overrun detection disabling
   #####  (++) DMA disabling on RX error
   #####  (++) MSB first on communication line
   #####  (++) auto Baud rate detection
   #####[..]
   #####The HAL_UART_Init(), HAL_HalfDuplex_Init() and HAL_MultiProcessor_Init()
   #####API follow respectively the UART asynchronous, UART Half duplex and multiprocessor mode
   #####configuration procedures (details for the procedures are available in reference manual).
   #####
   #####@endverbatim
   * @{
   */
  
  /*
   * Additional Table:  If the parity is enabled, then the MSB bit of the data written
   *                   in the data register is transmitted but is changed by the parity bit.
   *                   According to device capability (support or not of 7-bit word length),
   *                   frame length is either defined by the M bit (8-bits or 9-bits)
   *                   or by the M1 and M0 bits (7-bit, 8-bit or 9-bit).
   *                   Possible UART frame formats are as listed in the following table:
   *
   *    Table 1. UART frame format.
   * +-----------------------------------------------------------------------+
   |       M bit       |  PCE bit  |             UART frame                |
   ||-------------------|-----------|---------------------------------------|
   |         0         |     0     |    | SB |    8-bit data   | STB |     |
   ||-------------------|-----------|---------------------------------------|
   |         0         |     1     |    | SB | 7-bit data | PB | STB |     |
   ||-------------------|-----------|---------------------------------------|
   |         1         |     0     |    | SB |    9-bit data   | STB |     |
   ||-------------------|-----------|---------------------------------------|
   |         1         |     1     |    | SB | 8-bit data | PB | STB |     |
   |+-----------------------------------------------------------------------+
   |  M1 bit |  M0 bit |  PCE bit  |             UART frame                |
   ||---------|---------|-----------|---------------------------------------|
   |    0    |    0    |     0     |    | SB |    8 bit data   | STB |     |
   ||---------|---------|-----------|---------------------------------------|
   |    0    |    0    |     1     |    | SB | 7 bit data | PB | STB |     |
   ||---------|---------|-----------|---------------------------------------|
   |    0    |    1    |     0     |    | SB |    9 bit data   | STB |     |
   ||---------|---------|-----------|---------------------------------------|
   |    0    |    1    |     1     |    | SB | 8 bit data | PB | STB |     |
   ||---------|---------|-----------|---------------------------------------|
   |    1    |    0    |     0     |    | SB |    7 bit data   | STB |     |
   ||---------|---------|-----------|---------------------------------------|
   |    1    |    0    |     1     |    | SB | 6 bit data | PB | STB |     |
   |+-----------------------------------------------------------------------+
   |
   */
  
  /**
   * @brief Initialize the UART mode according to the specified
   *        parameters in the UART_InitTypeDef and initialize the associated handle.
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
  {
      /* Check the UART handle allocation */
      if (huart == NULL)
      {
          return HAL_ERROR;
      }
  
      if (huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
      {
          /* Check the parameters */
          assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
      }
      else
      {
          /* Check the parameters */
          assert_param(IS_UART_INSTANCE(huart->Instance));
      }
  
      if (huart->gState == HAL_UART_STATE_RESET)
      {
          /* Allocate lock resource and initialize it */
          huart->Lock = HAL_UNLOCKED;
  
          /* Init the low level hardware : GPIO, CLOCK */
          HAL_UART_MspInit(huart);
      }
  
      huart->gState = HAL_UART_STATE_BUSY;
  
      /* Disable the Peripheral */
      __HAL_UART_DISABLE(huart);
  
      /* Set the UART Communication parameters */
      if (UART_SetConfig(huart) == HAL_ERROR)
      {
          return HAL_ERROR;
      }
  
      if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
      {
          UART_AdvFeatureConfig(huart);
      }
  
      /* In asynchronous mode, the following bits must be kept cleared:
       * - LINEN (if LIN is supported) and CLKEN bits in the USART_CR2 register,
       * - SCEN (if Smartcard is supported), HDSEL and IREN (if IrDA is supported)  bits in the USART_CR3 register. */
      # if defined(USART_CR2_LINEN)
      CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
      # else
      CLEAR_BIT(huart->Instance->CR2, USART_CR2_CLKEN);
      # endif
      # if defined(USART_CR3_SCEN)
      #  if defined(USART_CR3_IREN)
      CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
      #  else
      CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL));
      #  endif
      # else
      #  if defined(USART_CR3_IREN)
      CLEAR_BIT(huart->Instance->CR3, (USART_CR3_HDSEL | USART_CR3_IREN));
      #  else
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_HDSEL);
      #  endif
      # endif /* if defined(USART_CR3_SCEN) */
  
      /* Enable the Peripheral */
      __HAL_UART_ENABLE(huart);
  
      /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
      return (UART_CheckIdleState(huart));
  } /* HAL_UART_Init */
  
  /**
   * @brief Initialize the half-duplex mode according to the specified
   *        parameters in the UART_InitTypeDef and creates the associated handle.
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
  {
      /* Check the UART handle allocation */
      if (huart == NULL)
      {
          return HAL_ERROR;
      }
  
      /* Check UART instance */
      assert_param(IS_UART_HALFDUPLEX_INSTANCE(huart->Instance));
  
      if (huart->gState == HAL_UART_STATE_RESET)
      {
          /* Allocate lock resource and initialize it */
          huart->Lock = HAL_UNLOCKED;
  
          /* Init the low level hardware : GPIO, CLOCK */
          HAL_UART_MspInit(huart);
      }
  
      huart->gState = HAL_UART_STATE_BUSY;
  
      /* Disable the Peripheral */
      __HAL_UART_DISABLE(huart);
  
      /* Set the UART Communication parameters */
      if (UART_SetConfig(huart) == HAL_ERROR)
      {
          return HAL_ERROR;
      }
  
      if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
      {
          UART_AdvFeatureConfig(huart);
      }
  
      /* In half-duplex mode, the following bits must be kept cleared:
       * - LINEN (if LIN is supported) and CLKEN bits in the USART_CR2 register,
       * - SCEN (if Smartcard is supported), and IREN (if IrDA is supported)  bits in the USART_CR3 register. */
      # if defined(USART_CR2_LINEN)
      CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
      # else
      CLEAR_BIT(huart->Instance->CR2, USART_CR2_CLKEN);
      # endif
      # if defined(USART_CR3_SCEN)
      #  if defined(USART_CR3_IREN)
      CLEAR_BIT(huart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN));
      #  else
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_SCEN);
      #  endif
      # else
      #  if defined(USART_CR3_IREN)
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_IREN);
      #  endif
      # endif
  
      /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
      SET_BIT(huart->Instance->CR3, USART_CR3_HDSEL);
  
      /* Enable the Peripheral */
      __HAL_UART_ENABLE(huart);
  
      /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
      return (UART_CheckIdleState(huart));
  } /* HAL_HalfDuplex_Init */
  
  /**
   * @brief Initialize the multiprocessor mode according to the specified
   *        parameters in the UART_InitTypeDef and initialize the associated handle.
   * @param huart UART handle.
   * @param Address UART node address (4-, 6-, 7- or 8-bit long).
   * @param WakeUpMethod specifies the UART wakeup method.
   *        This parameter can be one of the following values:
   *          @arg @ref UART_WAKEUPMETHOD_IDLELINE WakeUp by an idle line detection
   *          @arg @ref UART_WAKEUPMETHOD_ADDRESSMARK WakeUp by an address mark
   * @note  If the user resorts to idle line detection wake up, the Address parameter
   *        is useless and ignored by the initialization function.
   * @note  If the user resorts to address mark wake up, the address length detection
   *        is configured by default to 4 bits only. For the UART to be able to
   *        manage 6-, 7- or 8-bit long addresses detection, the API
   *        HAL_MultiProcessorEx_AddressLength_Set() must be called after
   *        HAL_MultiProcessor_Init().
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
  {
      /* Check the UART handle allocation */
      if (huart == NULL)
      {
          return HAL_ERROR;
      }
  
      /* Check the wake up method parameter */
      assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
  
      if (huart->gState == HAL_UART_STATE_RESET)
      {
          /* Allocate lock resource and initialize it */
          huart->Lock = HAL_UNLOCKED;
  
          /* Init the low level hardware : GPIO, CLOCK */
          HAL_UART_MspInit(huart);
      }
  
      huart->gState = HAL_UART_STATE_BUSY;
  
      /* Disable the Peripheral */
      __HAL_UART_DISABLE(huart);
  
      /* Set the UART Communication parameters */
      if (UART_SetConfig(huart) == HAL_ERROR)
      {
          return HAL_ERROR;
      }
  
      if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
      {
          UART_AdvFeatureConfig(huart);
      }
  
      /* In multiprocessor mode, the following bits must be kept cleared:
       * - LINEN (if LIN is supported) and CLKEN bits in the USART_CR2 register,
       * - SCEN (if Smartcard is supported), HDSEL and IREN (if IrDA is supported) bits in the USART_CR3 register. */
      # if defined(USART_CR2_LINEN)
      CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
      # else
      CLEAR_BIT(huart->Instance->CR2, USART_CR2_CLKEN);
      # endif
      # if defined(USART_CR3_SCEN)
      #  if defined(USART_CR3_IREN)
      CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
      #  else
      CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL));
      #  endif
      # else
      #  if defined(USART_CR3_IREN)
      CLEAR_BIT(huart->Instance->CR3, (USART_CR3_HDSEL | USART_CR3_IREN));
      #  else
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_HDSEL);
      #  endif
      # endif /* if defined(USART_CR3_SCEN) */
  
      if (WakeUpMethod == UART_WAKEUPMETHOD_ADDRESSMARK)
      {
          /* If address mark wake up method is chosen, set the USART address node */
          MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, ((uint32_t) Address << UART_CR2_ADDRESS_LSB_POS));
      }
  
      /* Set the wake up method by setting the WAKE bit in the CR1 register */
      MODIFY_REG(huart->Instance->CR1, USART_CR1_WAKE, WakeUpMethod);
  
      /* Enable the Peripheral */
      __HAL_UART_ENABLE(huart);
  
      /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
      return (UART_CheckIdleState(huart));
  } /* HAL_MultiProcessor_Init */
  
  /**
   * @brief DeInitialize the UART peripheral.
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
  {
      /* Check the UART handle allocation */
      if (huart == NULL)
      {
          return HAL_ERROR;
      }
  
      /* Check the parameters */
      assert_param(IS_UART_INSTANCE(huart->Instance));
  
      huart->gState = HAL_UART_STATE_BUSY;
  
      /* Disable the Peripheral */
      __HAL_UART_DISABLE(huart);
  
      huart->Instance->CR1 = 0x0U;
      huart->Instance->CR2 = 0x0U;
      huart->Instance->CR3 = 0x0U;
  
      /* DeInit the low level hardware */
      HAL_UART_MspDeInit(huart);
  
      huart->ErrorCode = HAL_UART_ERROR_NONE;
      huart->gState    = HAL_UART_STATE_RESET;
      huart->RxState   = HAL_UART_STATE_RESET;
  
      /* Process Unlock */
      __HAL_UNLOCK(huart);
  
      return HAL_OK;
  }
  
  /**
   * @brief Initialize the UART MSP.
   * @param huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE : This function should not be modified, when the callback is needed,
       *        the HAL_UART_MspInit can be implemented in the user file
       */
  }
  
  /**
   * @brief DeInitialize the UART MSP.
   * @param huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE : This function should not be modified, when the callback is needed,
       *        the HAL_UART_MspDeInit can be implemented in the user file
       */
  }
  
  /**
   * @}
   */
  
  /** @defgroup UART_Exported_Functions_Group2 IO operation functions
   * @brief UART Transmit/Receive functions
   *
   * @verbatim
   * ===============================================================================
   ##### IO operation functions #####
   #####===============================================================================
   #####This subsection provides a set of functions allowing to manage the UART asynchronous
   #####and Half duplex data transfers.
   #####
   #####(#) There are two mode of transfer:
   ##### (++) Blocking mode: The communication is performed in polling mode.
   #####     The HAL status of all data processing is returned by the same function
   #####     after finishing transfer.
   ##### (++) Non-Blocking mode: The communication is performed using Interrupts
   #####     or DMA, These API's return the HAL status.
   #####     The end of the data processing will be indicated through the
   #####     dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
   #####     using DMA mode.
   #####     The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
   #####     will be executed respectively at the end of the transmit or Receive process
   #####     The HAL_UART_ErrorCallback()user callback will be executed when a communication error is detected
   #####
   #####(#) Blocking mode API's are :
   #####  (++) HAL_UART_Transmit()
   #####  (++) HAL_UART_Receive()
   #####
   #####(#) Non-Blocking mode API's with Interrupt are :
   #####  (++) HAL_UART_Transmit_IT()
   #####  (++) HAL_UART_Receive_IT()
   #####  (++) HAL_UART_IRQHandler()
   #####
   #####(#) Non-Blocking mode API's with DMA are :
   #####  (++) HAL_UART_Transmit_DMA()
   #####  (++) HAL_UART_Receive_DMA()
   #####  (++) HAL_UART_DMAPause()
   #####  (++) HAL_UART_DMAResume()
   #####  (++) HAL_UART_DMAStop()
   #####
   #####(#) A set of Transfer Complete Callbacks are provided in Non_Blocking mode:
   #####  (++) HAL_UART_TxHalfCpltCallback()
   #####  (++) HAL_UART_TxCpltCallback()
   #####  (++) HAL_UART_RxHalfCpltCallback()
   #####  (++) HAL_UART_RxCpltCallback()
   #####  (++) HAL_UART_ErrorCallback()
   #####
   #####(#) Non-Blocking mode transfers could be aborted using Abort API's :
   #####  (++) HAL_UART_Abort()
   #####  (++) HAL_UART_AbortTransmit()
   #####  (++) HAL_UART_AbortReceive()
   #####  (++) HAL_UART_Abort_IT()
   #####  (++) HAL_UART_AbortTransmit_IT()
   #####  (++) HAL_UART_AbortReceive_IT()
   #####
   #####(#) For Abort services based on interrupts (HAL_UART_Abortxxx_IT), a set of Abort Complete Callbacks are provided:
   #####  (++) HAL_UART_AbortCpltCallback()
   #####  (++) HAL_UART_AbortTransmitCpltCallback()
   #####  (++) HAL_UART_AbortReceiveCpltCallback()
   #####
   #####(#) In Non-Blocking mode transfers, possible errors are split into 2 categories.
   #####  Errors are handled as follows :
   #####  (++) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is
   #####       to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception .
   #####       Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type,
   #####       and HAL_UART_ErrorCallback() user callback is executed. Transfer is kept ongoing on UART side.
   #####       If user wants to abort it, Abort services should be called by user.
   #####  (++) Error is considered as Blocking : Transfer could not be completed properly and is aborted.
   #####       This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode.
   #####       Error code is set to allow user to identify error type, and HAL_UART_ErrorCallback() user callback is executed.
   #####
   #####-@- In the Half duplex communication, it is forbidden to run the transmit
   #####  and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX can't be useful.
   #####
   #####@endverbatim
   * @{
   */
  
  /**
   * @brief Send an amount of data in blocking mode.
   * @param huart UART handle.
   * @param pData Pointer to data buffer.
   * @param Size Amount of data to be sent.
   * @param Timeout Timeout duration.
   * @note   When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
   *         address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
   *         (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
   *         use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
  {
      uint16_t *tmp;
      uint32_t tickstart = 0U;
  
      /* Check that a Tx process is not already ongoing */
      if (huart->gState == HAL_UART_STATE_READY)
      {
          if ((pData == NULL ) || (Size == 0U))
          {
              return HAL_ERROR;
          }
  
          /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
           * should be aligned on a u16 frontier, as data to be filled into TDR will be
           * handled through a u16 cast. */
          if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
          {
              if ((((uint32_t) pData) & 1U) != 0U)
              {
                  return HAL_ERROR;
              }
          }
  
          /* Process Locked */
          __HAL_LOCK(huart);
  
          huart->ErrorCode = HAL_UART_ERROR_NONE;
          huart->gState    = HAL_UART_STATE_BUSY_TX;
  
          /* Init tickstart for timeout managment*/
          tickstart = HAL_GetTick();
  
          huart->TxXferSize  = Size;
          huart->TxXferCount = Size;
          while (huart->TxXferCount > 0)
          {
              huart->TxXferCount--;
              if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
              {
                  return HAL_TIMEOUT;
              }
              if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
              {
                  tmp = (uint16_t *) pData;
                  huart->Instance->TDR = (*tmp & (uint16_t) 0x01FFU);
                  pData += 2;
              }
              else
              {
                  huart->Instance->TDR = (*pData++ & (uint8_t) 0xFFU);
              }
          }
          if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
          {
              return HAL_TIMEOUT;
          }
  
          /* At end of Tx process, restore huart->gState to Ready */
          huart->gState = HAL_UART_STATE_READY;
  
          /* Process Unlocked */
          __HAL_UNLOCK(huart);
  
          return HAL_OK;
      }
      else
      {
          return HAL_BUSY;
      }
  } /* HAL_UART_Transmit */
  
  /**
   * @brief Receive an amount of data in blocking mode.
   * @param huart UART handle.
   * @param pData pointer to data buffer.
   * @param Size amount of data to be received.
   * @param Timeout Timeout duration.
   * @note   When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
   *         address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
   *         (as received data will be handled using u16 pointer cast). Depending on compilation chain,
   *         use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
  {
      uint16_t *tmp;
      uint16_t uhMask;
      uint32_t tickstart = 0;
  
      /* Check that a Rx process is not already ongoing */
      if (huart->RxState == HAL_UART_STATE_READY)
      {
          if ((pData == NULL ) || (Size == 0U))
          {
              return HAL_ERROR;
          }
  
          /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
           * should be aligned on a u16 frontier, as data to be received from RDR will be
           * handled through a u16 cast. */
          if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
          {
              if ((((uint32_t) pData) & 1U) != 0U)
              {
                  return HAL_ERROR;
              }
          }
  
          /* Process Locked */
          __HAL_LOCK(huart);
  
          huart->ErrorCode = HAL_UART_ERROR_NONE;
          huart->RxState   = HAL_UART_STATE_BUSY_RX;
  
          /* Init tickstart for timeout managment*/
          tickstart = HAL_GetTick();
  
          huart->RxXferSize  = Size;
          huart->RxXferCount = Size;
  
          /* Computation of UART mask to apply to RDR register */
          UART_MASK_COMPUTATION(huart);
          uhMask = huart->Mask;
  
          /* as long as data have to be received */
          while (huart->RxXferCount > 0U)
          {
              huart->RxXferCount--;
              if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
              {
                  return HAL_TIMEOUT;
              }
              if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
              {
                  tmp    = (uint16_t *) pData;
                  *tmp   = (uint16_t) (huart->Instance->RDR & uhMask);
                  pData += 2U;
              }
              else
              {
                  *pData++ = (uint8_t) (huart->Instance->RDR & (uint8_t) uhMask);
              }
          }
  
          /* At end of Rx process, restore huart->RxState to Ready */
          huart->RxState = HAL_UART_STATE_READY;
  
          /* Process Unlocked */
          __HAL_UNLOCK(huart);
  
          return HAL_OK;
      }
      else
      {
          return HAL_BUSY;
      }
  } /* HAL_UART_Receive */
  
  /**
   * @brief Send an amount of data in interrupt mode.
   * @param huart UART handle.
   * @param pData pointer to data buffer.
   * @param Size amount of data to be sent.
   * @note   When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
   *         address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
   *         (as sent data will be handled using u16 pointer cast). Depending on compilation chain,
   *         use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
  {
      /* Check that a Tx process is not already ongoing */
      if (huart->gState == HAL_UART_STATE_READY)
      {
          if ((pData == NULL ) || (Size == 0U))
          {
              return HAL_ERROR;
          }
  
          /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
           * should be aligned on a u16 frontier, as data to be filled into TDR will be
           * handled through a u16 cast. */
          if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
          {
              if ((((uint32_t) pData) & 1U) != 0U)
              {
                  return HAL_ERROR;
              }
          }
  
          /* Process Locked */
          __HAL_LOCK(huart);
  
          huart->pTxBuffPtr  = pData;
          huart->TxXferSize  = Size;
          huart->TxXferCount = Size;
  
          huart->ErrorCode = HAL_UART_ERROR_NONE;
          huart->gState    = HAL_UART_STATE_BUSY_TX;
  
          /* Process Unlocked */
          __HAL_UNLOCK(huart);
  
          /* Enable the UART Transmit Data Register Empty Interrupt */
          SET_BIT(huart->Instance->CR1, USART_CR1_TXEIE);
  
          return HAL_OK;
      }
      else
      {
          return HAL_BUSY;
      }
  } /* HAL_UART_Transmit_IT */
  
  /**
   * @brief Receive an amount of data in interrupt mode.
   * @param huart UART handle.
   * @param pData pointer to data buffer.
   * @param Size amount of data to be received.
   * @note   When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
   *         address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
   *         (as received data will be handled using u16 pointer cast). Depending on compilation chain,
   *         use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
  {
      /* Check that a Rx process is not already ongoing */
      if (huart->RxState == HAL_UART_STATE_READY)
      {
          if ((pData == NULL ) || (Size == 0U))
          {
              return HAL_ERROR;
          }
  
          /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
           * should be aligned on a u16 frontier, as data to be received from RDR will be
           * handled through a u16 cast. */
          if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
          {
              if ((((uint32_t) pData) & 1U) != 0U)
              {
                  return HAL_ERROR;
              }
          }
  
          /* Process Locked */
          __HAL_LOCK(huart);
  
          huart->pRxBuffPtr  = pData;
          huart->RxXferSize  = Size;
          huart->RxXferCount = Size;
  
          /* Computation of UART mask to apply to RDR register */
          UART_MASK_COMPUTATION(huart);
  
          huart->ErrorCode = HAL_UART_ERROR_NONE;
          huart->RxState   = HAL_UART_STATE_BUSY_RX;
  
          /* Process Unlocked */
          __HAL_UNLOCK(huart);
  
          /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
          SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
          /* Enable the UART Parity Error and Data Register not empty Interrupts */
          SET_BIT(huart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
  
          return HAL_OK;
      }
      else
      {
          return HAL_BUSY;
      }
  } /* HAL_UART_Receive_IT */
  
  /**
   * @brief Send an amount of data in DMA mode.
   * @param huart UART handle.
   * @param pData pointer to data buffer.
   * @param Size amount of data to be sent.
   * @note   When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
   *         address of user data buffer containing data to be sent, should be aligned on a half word frontier (16 bits)
   *         (as sent data will be handled by DMA from halfword frontier). Depending on compilation chain,
   *         use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
  {
      /* Check that a Tx process is not already ongoing */
      if (huart->gState == HAL_UART_STATE_READY)
      {
          if ((pData == NULL ) || (Size == 0U))
          {
              return HAL_ERROR;
          }
  
          /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
           * should be aligned on a u16 frontier, as data copy into TDR will be
           * handled by DMA from a u16 frontier. */
          if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
          {
              if ((((uint32_t) pData) & 1U) != 0U)
              {
                  return HAL_ERROR;
              }
          }
  
          /* Process Locked */
          __HAL_LOCK(huart);
  
          huart->pTxBuffPtr  = pData;
          huart->TxXferSize  = Size;
          huart->TxXferCount = Size;
  
          huart->ErrorCode = HAL_UART_ERROR_NONE;
          huart->gState    = HAL_UART_STATE_BUSY_TX;
  
          /* Set the UART DMA transfer complete callback */
          huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
  
          /* Set the UART DMA Half transfer complete callback */
          huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
  
          /* Set the DMA error callback */
          huart->hdmatx->XferErrorCallback = UART_DMAError;
  
          /* Set the DMA abort callback */
          huart->hdmatx->XferAbortCallback = NULL;
  
          /* Enable the UART transmit DMA channel */
          HAL_DMA_Start_IT(huart->hdmatx, (uint32_t) huart->pTxBuffPtr, (uint32_t) &huart->Instance->TDR, Size);
  
          /* Clear the TC flag in the ICR register */
          __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
  
          /* Process Unlocked */
          __HAL_UNLOCK(huart);
  
          /* Enable the DMA transfer for transmit request by setting the DMAT bit
           * in the UART CR3 register */
          SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  
          return HAL_OK;
      }
      else
      {
          return HAL_BUSY;
      }
  } /* HAL_UART_Transmit_DMA */
  
  /**
   * @brief Receive an amount of data in DMA mode.
   * @param huart UART handle.
   * @param pData pointer to data buffer.
   * @param Size amount of data to be received.
   * @note   When UART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
   *         address of user data buffer for storing data to be received, should be aligned on a half word frontier (16 bits)
   *         (as received data will be handled by DMA from halfword frontier). Depending on compilation chain,
   *         use of specific alignment compilation directives or pragmas might be required to ensure proper alignment for pData.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
  {
      /* Check that a Rx process is not already ongoing */
      if (huart->RxState == HAL_UART_STATE_READY)
      {
          if ((pData == NULL ) || (Size == 0U))
          {
              return HAL_ERROR;
          }
  
          /* In case of 9bits/No Parity transfer, pData buffer provided as input paramter
           * should be aligned on a u16 frontier, as data copy from RDR will be
           * handled by DMA from a u16 frontier. */
          if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
          {
              if ((((uint32_t) pData) & 1U) != 0U)
              {
                  return HAL_ERROR;
              }
          }
  
          /* Process Locked */
          __HAL_LOCK(huart);
  
          huart->pRxBuffPtr = pData;
          huart->RxXferSize = Size;
  
          huart->ErrorCode = HAL_UART_ERROR_NONE;
          huart->RxState   = HAL_UART_STATE_BUSY_RX;
  
          /* Set the UART DMA transfer complete callback */
          huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
  
          /* Set the UART DMA Half transfer complete callback */
          huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
  
          /* Set the DMA error callback */
          huart->hdmarx->XferErrorCallback = UART_DMAError;
  
          /* Set the DMA abort callback */
          huart->hdmarx->XferAbortCallback = NULL;
  
          /* Enable the DMA channel */
          HAL_DMA_Start_IT(huart->hdmarx, (uint32_t) &huart->Instance->RDR, (uint32_t) huart->pRxBuffPtr, Size);
  
          /* Process Unlocked */
          __HAL_UNLOCK(huart);
  
          /* Enable the UART Parity Error Interrupt */
          SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
  
          /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
          SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
          /* Enable the DMA transfer for the receiver request by setting the DMAR bit
           * in the UART CR3 register */
          SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  
          return HAL_OK;
      }
      else
      {
          return HAL_BUSY;
      }
  } /* HAL_UART_Receive_DMA */
  
  /**
   * @brief Pause the DMA Transfer.
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
  {
      /* Process Locked */
      __HAL_LOCK(huart);
  
      if ((huart->gState == HAL_UART_STATE_BUSY_TX) &&
        (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)))
      {
          /* Disable the UART DMA Tx request */
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
      }
      if ((huart->RxState == HAL_UART_STATE_BUSY_RX) &&
        (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)))
      {
          /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
          CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
          /* Disable the UART DMA Rx request */
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
      }
  
      /* Process Unlocked */
      __HAL_UNLOCK(huart);
  
      return HAL_OK;
  }
  
  /**
   * @brief Resume the DMA Transfer.
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
  {
      /* Process Locked */
      __HAL_LOCK(huart);
  
      if (huart->gState == HAL_UART_STATE_BUSY_TX)
      {
          /* Enable the UART DMA Tx request */
          SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
      }
      if (huart->RxState == HAL_UART_STATE_BUSY_RX)
      {
          /* Clear the Overrun flag before resuming the Rx transfer */
          __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
  
          /* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */
          SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
          SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
          /* Enable the UART DMA Rx request */
          SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
      }
  
      /* Process Unlocked */
      __HAL_UNLOCK(huart);
  
      return HAL_OK;
  }
  
  /**
   * @brief Stop the DMA Transfer.
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
  {
      /* The Lock is not implemented on this API to allow the user application
       * to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback() /
       * HAL_UART_TxHalfCpltCallback / HAL_UART_RxHalfCpltCallback:
       * indeed, when HAL_DMA_Abort() API is called, the DMA TX/RX Transfer or Half Transfer complete
       * interrupt is generated if the DMA transfer interruption occurs at the middle or at the end of
       * the stream and the corresponding call back is executed. */
  
      /* Stop UART DMA Tx request if ongoing */
      if ((huart->gState == HAL_UART_STATE_BUSY_TX) &&
        (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  
          /* Abort the UART DMA Tx channel */
          if (huart->hdmatx != NULL)
          {
              HAL_DMA_Abort(huart->hdmatx);
          }
  
          UART_EndTxTransfer(huart);
      }
  
      /* Stop UART DMA Rx request if ongoing */
      if ((huart->RxState == HAL_UART_STATE_BUSY_RX) &&
        (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  
          /* Abort the UART DMA Rx channel */
          if (huart->hdmarx != NULL)
          {
              HAL_DMA_Abort(huart->hdmarx);
          }
  
          UART_EndRxTransfer(huart);
      }
  
      return HAL_OK;
  } /* HAL_UART_DMAStop */
  
  /**
   * @brief  Abort ongoing transfers (blocking mode).
   * @param  huart UART handle.
   * @note   This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
   *         This procedure performs following operations :
   *           - Disable UART Interrupts (Tx and Rx)
   *           - Disable the DMA transfer in the peripheral register (if enabled)
   *           - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
   *           - Set handle State to READY
   * @note   This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Abort(UART_HandleTypeDef *huart)
  {
      /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
      /* Disable the UART DMA Tx request if enabled */
      if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  
          /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
          if (huart->hdmatx != NULL)
          {
              /* Set the UART DMA Abort callback to Null.
               * No call back execution at end of DMA abort procedure */
              huart->hdmatx->XferAbortCallback = NULL;
  
              HAL_DMA_Abort(huart->hdmatx);
          }
      }
  
      /* Disable the UART DMA Rx request if enabled */
      if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  
          /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
          if (huart->hdmarx != NULL)
          {
              /* Set the UART DMA Abort callback to Null.
               * No call back execution at end of DMA abort procedure */
              huart->hdmarx->XferAbortCallback = NULL;
  
              HAL_DMA_Abort(huart->hdmarx);
          }
      }
  
      /* Reset Tx and Rx transfer counters */
      huart->TxXferCount = 0U;
      huart->RxXferCount = 0U;
  
      /* Clear the Error flags in the ICR register */
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
  
      /* Restore huart->gState and huart->RxState to Ready */
      huart->gState  = HAL_UART_STATE_READY;
      huart->RxState = HAL_UART_STATE_READY;
  
      /* Reset Handle ErrorCode to No Error */
      huart->ErrorCode = HAL_UART_ERROR_NONE;
  
      return HAL_OK;
  } /* HAL_UART_Abort */
  
  /**
   * @brief  Abort ongoing Transmit transfer (blocking mode).
   * @param  huart UART handle.
   * @note   This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
   *         This procedure performs following operations :
   *           - Disable UART Interrupts (Tx)
   *           - Disable the DMA transfer in the peripheral register (if enabled)
   *           - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
   *           - Set handle State to READY
   * @note   This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_AbortTransmit(UART_HandleTypeDef *huart)
  {
      /* Disable TXEIE and TCIE interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
  
      /* Disable the UART DMA Tx request if enabled */
      if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  
          /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
          if (huart->hdmatx != NULL)
          {
              /* Set the UART DMA Abort callback to Null.
               * No call back execution at end of DMA abort procedure */
              huart->hdmatx->XferAbortCallback = NULL;
  
              HAL_DMA_Abort(huart->hdmatx);
          }
      }
  
      /* Reset Tx transfer counter */
      huart->TxXferCount = 0U;
  
      /* Restore huart->gState to Ready */
      huart->gState = HAL_UART_STATE_READY;
  
      return HAL_OK;
  }
  
  /**
   * @brief  Abort ongoing Receive transfer (blocking mode).
   * @param  huart UART handle.
   * @note   This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
   *         This procedure performs following operations :
   *           - Disable UART Interrupts (Rx)
   *           - Disable the DMA transfer in the peripheral register (if enabled)
   *           - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode)
   *           - Set handle State to READY
   * @note   This procedure is executed in blocking mode : when exiting function, Abort is considered as completed.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_AbortReceive(UART_HandleTypeDef *huart)
  {
      /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
      /* Disable the UART DMA Rx request if enabled */
      if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  
          /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
          if (huart->hdmarx != NULL)
          {
              /* Set the UART DMA Abort callback to Null.
               * No call back execution at end of DMA abort procedure */
              huart->hdmarx->XferAbortCallback = NULL;
  
              HAL_DMA_Abort(huart->hdmarx);
          }
      }
  
      /* Reset Rx transfer counter */
      huart->RxXferCount = 0U;
  
      /* Clear the Error flags in the ICR register */
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
  
      /* Restore huart->RxState to Ready */
      huart->RxState = HAL_UART_STATE_READY;
  
      return HAL_OK;
  }
  
  /**
   * @brief  Abort ongoing transfers (Interrupt mode).
   * @param  huart UART handle.
   * @note   This procedure could be used for aborting any ongoing transfer started in Interrupt or DMA mode.
   *         This procedure performs following operations :
   *           - Disable UART Interrupts (Tx and Rx)
   *           - Disable the DMA transfer in the peripheral register (if enabled)
   *           - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
   *           - Set handle State to READY
   *           - At abort completion, call user abort complete callback
   * @note   This procedure is executed in Interrupt mode, meaning that abort procedure could be
   *         considered as completed only when user abort complete callback is executed (not when exiting function).
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_Abort_IT(UART_HandleTypeDef *huart)
  {
      uint32_t abortcplt = 1U;
  
      /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
      /* If DMA Tx and/or DMA Rx Handles are associated to UART Handle, DMA Abort complete callbacks should be initialised
       * before any call to DMA Abort functions */
      /* DMA Tx Handle is valid */
      if (huart->hdmatx != NULL)
      {
          /* Set DMA Abort Complete callback if UART DMA Tx request if enabled.
           * Otherwise, set it to NULL */
          if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
          {
              huart->hdmatx->XferAbortCallback = UART_DMATxAbortCallback;
          }
          else
          {
              huart->hdmatx->XferAbortCallback = NULL;
          }
      }
      /* DMA Rx Handle is valid */
      if (huart->hdmarx != NULL)
      {
          /* Set DMA Abort Complete callback if UART DMA Rx request if enabled.
           * Otherwise, set it to NULL */
          if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
          {
              huart->hdmarx->XferAbortCallback = UART_DMARxAbortCallback;
          }
          else
          {
              huart->hdmarx->XferAbortCallback = NULL;
          }
      }
  
      /* Disable the UART DMA Tx request if enabled */
      if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
      {
          /* Disable DMA Tx at UART level */
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  
          /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
          if (huart->hdmatx != NULL)
          {
              /* UART Tx DMA Abort callback has already been initialised :
               * will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
  
              /* Abort DMA TX */
              if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
              {
                  huart->hdmatx->XferAbortCallback = NULL;
              }
              else
              {
                  abortcplt = 0U;
              }
          }
      }
  
      /* Disable the UART DMA Rx request if enabled */
      if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  
          /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
          if (huart->hdmarx != NULL)
          {
              /* UART Rx DMA Abort callback has already been initialised :
               * will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
  
              /* Abort DMA RX */
              if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
              {
                  huart->hdmarx->XferAbortCallback = NULL;
                  abortcplt = 1U;
              }
              else
              {
                  abortcplt = 0U;
              }
          }
      }
  
      /* if no DMA abort complete callback execution is required => call user Abort Complete callback */
      if (abortcplt == 1U)
      {
          /* Reset Tx and Rx transfer counters */
          huart->TxXferCount = 0U;
          huart->RxXferCount = 0U;
  
          /* Reset errorCode */
          huart->ErrorCode = HAL_UART_ERROR_NONE;
  
          /* Clear the Error flags in the ICR register */
          __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
  
          /* Restore huart->gState and huart->RxState to Ready */
          huart->gState  = HAL_UART_STATE_READY;
          huart->RxState = HAL_UART_STATE_READY;
  
          /* As no DMA to be aborted, call directly user Abort complete callback */
          HAL_UART_AbortCpltCallback(huart);
      }
  
      return HAL_OK;
  } /* HAL_UART_Abort_IT */
  
  /**
   * @brief  Abort ongoing Transmit transfer (Interrupt mode).
   * @param  huart UART handle.
   * @note   This procedure could be used for aborting any ongoing Tx transfer started in Interrupt or DMA mode.
   *         This procedure performs following operations :
   *           - Disable UART Interrupts (Tx)
   *           - Disable the DMA transfer in the peripheral register (if enabled)
   *           - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
   *           - Set handle State to READY
   *           - At abort completion, call user abort complete callback
   * @note   This procedure is executed in Interrupt mode, meaning that abort procedure could be
   *         considered as completed only when user abort complete callback is executed (not when exiting function).
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_AbortTransmit_IT(UART_HandleTypeDef *huart)
  {
      /* Disable TXEIE and TCIE interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
  
      /* Disable the UART DMA Tx request if enabled */
      if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  
          /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
          if (huart->hdmatx != NULL)
          {
              /* Set the UART DMA Abort callback :
               * will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
              huart->hdmatx->XferAbortCallback = UART_DMATxOnlyAbortCallback;
  
              /* Abort DMA TX */
              if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
              {
                  /* Call Directly huart->hdmatx->XferAbortCallback function in case of error */
                  huart->hdmatx->XferAbortCallback(huart->hdmatx);
              }
          }
          else
          {
              /* Reset Tx transfer counter */
              huart->TxXferCount = 0U;
  
              /* Restore huart->gState to Ready */
              huart->gState = HAL_UART_STATE_READY;
  
              /* As no DMA to be aborted, call directly user Abort complete callback */
              HAL_UART_AbortTransmitCpltCallback(huart);
          }
      }
      else
      {
          /* Reset Tx transfer counter */
          huart->TxXferCount = 0U;
  
          /* Restore huart->gState to Ready */
          huart->gState = HAL_UART_STATE_READY;
  
          /* As no DMA to be aborted, call directly user Abort complete callback */
          HAL_UART_AbortTransmitCpltCallback(huart);
      }
  
      return HAL_OK;
  } /* HAL_UART_AbortTransmit_IT */
  
  /**
   * @brief  Abort ongoing Receive transfer (Interrupt mode).
   * @param  huart UART handle.
   * @note   This procedure could be used for aborting any ongoing Rx transfer started in Interrupt or DMA mode.
   *         This procedure performs following operations :
   *           - Disable UART Interrupts (Rx)
   *           - Disable the DMA transfer in the peripheral register (if enabled)
   *           - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode)
   *           - Set handle State to READY
   *           - At abort completion, call user abort complete callback
   * @note   This procedure is executed in Interrupt mode, meaning that abort procedure could be
   *         considered as completed only when user abort complete callback is executed (not when exiting function).
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_UART_AbortReceive_IT(UART_HandleTypeDef *huart)
  {
      /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
      /* Disable the UART DMA Rx request if enabled */
      if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
      {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  
          /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
          if (huart->hdmarx != NULL)
          {
              /* Set the UART DMA Abort callback :
               * will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
              huart->hdmarx->XferAbortCallback = UART_DMARxOnlyAbortCallback;
  
              /* Abort DMA RX */
              if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
              {
                  /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
                  huart->hdmarx->XferAbortCallback(huart->hdmarx);
              }
          }
          else
          {
              /* Reset Rx transfer counter */
              huart->RxXferCount = 0U;
  
              /* Clear the Error flags in the ICR register */
              __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
  
              /* Restore huart->RxState to Ready */
              huart->RxState = HAL_UART_STATE_READY;
  
              /* As no DMA to be aborted, call directly user Abort complete callback */
              HAL_UART_AbortReceiveCpltCallback(huart);
          }
      }
      else
      {
          /* Reset Rx transfer counter */
          huart->RxXferCount = 0U;
  
          /* Clear the Error flags in the ICR register */
          __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
  
          /* Restore huart->RxState to Ready */
          huart->RxState = HAL_UART_STATE_READY;
  
          /* As no DMA to be aborted, call directly user Abort complete callback */
          HAL_UART_AbortReceiveCpltCallback(huart);
      }
  
      return HAL_OK;
  } /* HAL_UART_AbortReceive_IT */
  
  /**
   * @brief Handle UART interrupt request.
   * @param huart UART handle.
   * @retval None
   */
  void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
  {
      uint32_t isrflags = READ_REG(huart->Instance->ISR);
      uint32_t cr1its   = READ_REG(huart->Instance->CR1);
      uint32_t cr3its;
      uint32_t errorflags;
  
      /* If no error occurs */
      errorflags = (isrflags & (uint32_t) (USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE));
      if (errorflags == RESET)
      {
          /* UART in mode Receiver ---------------------------------------------------*/
          if (((isrflags & USART_ISR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
          {
              UART_Receive_IT(huart);
              return;
          }
      }
  
      /* If some errors occur */
      cr3its = READ_REG(huart->Instance->CR3);
      if (   (errorflags != RESET) &&
        (   ((cr3its & USART_CR3_EIE) != RESET) ||
            ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)) )
      {
          /* UART parity error interrupt occurred -------------------------------------*/
          if (((isrflags & USART_ISR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
          {
              __HAL_UART_CLEAR_IT(huart, UART_CLEAR_PEF);
  
              huart->ErrorCode |= HAL_UART_ERROR_PE;
          }
  
          /* UART frame error interrupt occurred --------------------------------------*/
          if (((isrflags & USART_ISR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
          {
              __HAL_UART_CLEAR_IT(huart, UART_CLEAR_FEF);
  
              huart->ErrorCode |= HAL_UART_ERROR_FE;
          }
  
          /* UART noise error interrupt occurred --------------------------------------*/
          if (((isrflags & USART_ISR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
          {
              __HAL_UART_CLEAR_IT(huart, UART_CLEAR_NEF);
  
              huart->ErrorCode |= HAL_UART_ERROR_NE;
          }
  
          /* UART Over-Run interrupt occurred -----------------------------------------*/
          if (((isrflags & USART_ISR_ORE) != RESET) &&
            (((cr1its & USART_CR1_RXNEIE) != RESET) || ((cr3its & USART_CR3_EIE) != RESET)))
          {
              __HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
  
              huart->ErrorCode |= HAL_UART_ERROR_ORE;
          }
  
          /* Call UART Error Call back function if need be --------------------------*/
          if (huart->ErrorCode != HAL_UART_ERROR_NONE)
          {
              /* UART in mode Receiver ---------------------------------------------------*/
              if (((isrflags & USART_ISR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
              {
                  UART_Receive_IT(huart);
              }
  
              /* If Overrun error occurs, or if any error occurs in DMA mode reception,
               * consider error as blocking */
              if (((huart->ErrorCode & HAL_UART_ERROR_ORE) != RESET) ||
                (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)))
              {
                  /* Blocking error : transfer is aborted
                   * Set the UART state ready to be able to start again the process,
                   * Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
                  UART_EndRxTransfer(huart);
  
                  /* Disable the UART DMA Rx request if enabled */
                  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
                  {
                      CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  
                      /* Abort the UART DMA Rx channel */
                      if (huart->hdmarx != NULL)
                      {
                          /* Set the UART DMA Abort callback :
                           * will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */
                          huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;
  
                          /* Abort DMA RX */
                          if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
                          {
                              /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
                              huart->hdmarx->XferAbortCallback(huart->hdmarx);
                          }
                      }
                      else
                      {
                          /* Call user error callback */
                          HAL_UART_ErrorCallback(huart);
                      }
                  }
                  else
                  {
                      /* Call user error callback */
                      HAL_UART_ErrorCallback(huart);
                  }
              }
              else
              {
                  /* Non Blocking error : transfer could go on.
                   * Error is notified to user through user error callback */
                  HAL_UART_ErrorCallback(huart);
                  huart->ErrorCode = HAL_UART_ERROR_NONE;
              }
          }
          return;
      } /* End if some error occurs */
  
      # if !defined(STM32F030x6) && !defined(STM32F030x8) && !defined(STM32F070xB) && !defined(STM32F070x6) && !defined(STM32F030xC)
      /* UART wakeup from Stop mode interrupt occurred ---------------------------*/
      if (((isrflags & USART_ISR_WUF) != RESET) && ((cr3its & USART_CR3_WUFIE) != RESET))
      {
          __HAL_UART_CLEAR_IT(huart, UART_CLEAR_WUF);
          /* Set the UART state ready to be able to start again the process */
          huart->gState  = HAL_UART_STATE_READY;
          huart->RxState = HAL_UART_STATE_READY;
          HAL_UARTEx_WakeupCallback(huart);
          return;
      }
      # endif /* !defined(STM32F030x6) && !defined(STM32F030x8)&& !defined(STM32F070xB)&& !defined(STM32F070x6)&& !defined(STM32F030xC) */
  
      /* UART in mode Transmitter ------------------------------------------------*/
      if (((isrflags & USART_ISR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
      {
          UART_Transmit_IT(huart);
          return;
      }
  
      /* UART in mode Transmitter (transmission end) -----------------------------*/
      if (((isrflags & USART_ISR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
      {
          UART_EndTransmit_IT(huart);
          return;
      }
  } /* HAL_UART_IRQHandler */
  
  /**
   * @brief Tx Transfer completed callback.
   * @param huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE : This function should not be modified, when the callback is needed,
       *        the HAL_UART_TxCpltCallback can be implemented in the user file.
       */
  }
  
  /**
   * @brief  Tx Half Transfer completed callback.
   * @param  huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE: This function should not be modified, when the callback is needed,
       *       the HAL_UART_TxHalfCpltCallback can be implemented in the user file.
       */
  }
  
  /**
   * @brief Rx Transfer completed callback.
   * @param huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE : This function should not be modified, when the callback is needed,
       *        the HAL_UART_RxCpltCallback can be implemented in the user file.
       */
  }
  
  /**
   * @brief  Rx Half Transfer completed callback.
   * @param  huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE: This function should not be modified, when the callback is needed,
       *       the HAL_UART_RxHalfCpltCallback can be implemented in the user file.
       */
  }
  
  /**
   * @brief UART error callback.
   * @param huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE : This function should not be modified, when the callback is needed,
       *        the HAL_UART_ErrorCallback can be implemented in the user file.
       */
  }
  
  /**
   * @brief  UART Abort Complete callback.
   * @param  huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_AbortCpltCallback(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE : This function should not be modified, when the callback is needed,
       *        the HAL_UART_AbortCpltCallback can be implemented in the user file.
       */
  }
  
  /**
   * @brief  UART Abort Complete callback.
   * @param  huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_AbortTransmitCpltCallback(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE : This function should not be modified, when the callback is needed,
       *        the HAL_UART_AbortTransmitCpltCallback can be implemented in the user file.
       */
  }
  
  /**
   * @brief  UART Abort Receive Complete callback.
   * @param  huart UART handle.
   * @retval None
   */
  __weak void HAL_UART_AbortReceiveCpltCallback(UART_HandleTypeDef *huart)
  {
      /* Prevent unused argument(s) compilation warning */
      UNUSED(huart);
  
      /* NOTE : This function should not be modified, when the callback is needed,
       *        the HAL_UART_AbortReceiveCpltCallback can be implemented in the user file.
       */
  }
  
  /**
   * @}
   */
  
  /** @defgroup UART_Exported_Functions_Group3 Peripheral Control functions
   *  @brief   UART control functions
   *
   * @verbatim
   * ===============================================================================
   ##### Peripheral Control functions #####
   #####===============================================================================
   #####[..]
   #####This subsection provides a set of functions allowing to control the UART.
   #####(+) HAL_MultiProcessor_EnableMuteMode() API enables mute mode
   #####(+) HAL_MultiProcessor_DisableMuteMode() API disables mute mode
   #####(+) HAL_MultiProcessor_EnterMuteMode() API enters mute mode
   #####(+) HAL_HalfDuplex_EnableTransmitter() API disables receiver and enables transmitter
   #####(+) HAL_HalfDuplex_EnableReceiver() API disables transmitter and enables receiver
   #####@endverbatim
   * @{
   */
  
  /**
   * @brief Enable UART in mute mode (does not mean UART enters mute mode;
   * to enter mute mode, HAL_MultiProcessor_EnterMuteMode() API must be called).
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_MultiProcessor_EnableMuteMode(UART_HandleTypeDef *huart)
  {
      /* Process Locked */
      __HAL_LOCK(huart);
  
      huart->gState = HAL_UART_STATE_BUSY;
  
      /* Enable USART mute mode by setting the MME bit in the CR1 register */
      SET_BIT(huart->Instance->CR1, USART_CR1_MME);
  
      huart->gState = HAL_UART_STATE_READY;
  
      return (UART_CheckIdleState(huart));
  }
  
  /**
   * @brief  Disable UART mute mode (does not mean the UART actually exits mute mode
   *         as it may not have been in mute mode at this very moment).
   * @param  huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_MultiProcessor_DisableMuteMode(UART_HandleTypeDef *huart)
  {
      /* Process Locked */
      __HAL_LOCK(huart);
  
      huart->gState = HAL_UART_STATE_BUSY;
  
      /* Disable USART mute mode by clearing the MME bit in the CR1 register */
      CLEAR_BIT(huart->Instance->CR1, USART_CR1_MME);
  
      huart->gState = HAL_UART_STATE_READY;
  
      return (UART_CheckIdleState(huart));
  }
  
  /**
   * @brief Enter UART mute mode (means UART actually enters mute mode).
   * @note  To exit from mute mode, HAL_MultiProcessor_DisableMuteMode() API must be called.
   * @param huart UART handle.
   * @retval None
   */
  void HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
  {
      __HAL_UART_SEND_REQ(huart, UART_MUTE_MODE_REQUEST);
  }
  
  /**
   * @brief  Enable the UART transmitter and disable the UART receiver.
   * @param  huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
  {
      /* Process Locked */
      __HAL_LOCK(huart);
      huart->gState = HAL_UART_STATE_BUSY;
  
      /* Clear TE and RE bits */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
      /* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
      SET_BIT(huart->Instance->CR1, USART_CR1_TE);
  
      huart->gState = HAL_UART_STATE_READY;
  
      /* Process Unlocked */
      __HAL_UNLOCK(huart);
  
      return HAL_OK;
  }
  
  /**
   * @brief  Enable the UART receiver and disable the UART transmitter.
   * @param  huart UART handle.
   * @retval HAL status.
   */
  HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
  {
      /* Process Locked */
      __HAL_LOCK(huart);
      huart->gState = HAL_UART_STATE_BUSY;
  
      /* Clear TE and RE bits */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
      /* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
      SET_BIT(huart->Instance->CR1, USART_CR1_RE);
  
      huart->gState = HAL_UART_STATE_READY;
      /* Process Unlocked */
      __HAL_UNLOCK(huart);
  
      return HAL_OK;
  }
  
  /**
   * @}
   */
  
  /** @defgroup UART_Exported_Functions_Group4 Peripheral State and Error functions
   *  @brief   UART Peripheral State functions
   *
   * @verbatim
   * ==============================================================================
   ##### Peripheral State and Error functions #####
   #####==============================================================================
   #####[..]
   #####This subsection provides functions allowing to :
   #####(+) Return the UART handle state.
   #####(+) Return the UART handle error code
   #####
   #####@endverbatim
   * @{
   */
  
  /**
   * @brief  Return the UART handle state.
   * @param  huart Pointer to a UART_HandleTypeDef structure that contains
   *               the configuration information for the specified UART.
   * @retval HAL state
   */
  HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
  {
      uint32_t temp1 = 0x00U, temp2 = 0x00U;
      temp1 = huart->gState;
      temp2 = huart->RxState;
  
      return (HAL_UART_StateTypeDef) (temp1 | temp2);
  }
  
  /**
   * @brief  Return the UART handle error code.
   * @param  huart Pointer to a UART_HandleTypeDef structure that contains
   *               the configuration information for the specified UART.
   * @retval UART Error Code
   */
  uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
  {
      return huart->ErrorCode;
  }
  
  /**
   * @}
   */
  
  /**
   * @}
   */
  
  /** @defgroup UART_Private_Functions UART Private Functions
   * @{
   */
  
  /**
   * @brief Configure the UART peripheral.
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef UART_SetConfig(UART_HandleTypeDef *huart)
  {
      uint32_t tmpreg = 0x00000000U;
      UART_ClockSourceTypeDef clocksource = UART_CLOCKSOURCE_UNDEFINED;
      uint16_t brrtemp      = 0x0000U;
      uint16_t usartdiv     = 0x0000U;
      HAL_StatusTypeDef ret = HAL_OK;
  
      /* Check the parameters */
      assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
      assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
      assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
      assert_param(IS_UART_PARITY(huart->Init.Parity));
      assert_param(IS_UART_MODE(huart->Init.Mode));
      assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
      assert_param(IS_UART_ONE_BIT_SAMPLE(huart->Init.OneBitSampling));
      assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
  
  
      /*-------------------------- USART CR1 Configuration -----------------------*/
  
      /* Clear M, PCE, PS, TE, RE and OVER8 bits and configure
       *  the UART Word Length, Parity, Mode and oversampling:
       *  set the M bits according to huart->Init.WordLength value
       *  set PCE and PS bits according to huart->Init.Parity value
       *  set TE and RE bits according to huart->Init.Mode value
       *  set OVER8 bit according to huart->Init.OverSampling value */
      tmpreg = (uint32_t) huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling;
      MODIFY_REG(huart->Instance->CR1, UART_CR1_FIELDS, tmpreg);
  
      /*-------------------------- USART CR2 Configuration -----------------------*/
  
      /* Configure the UART Stop Bits: Set STOP[13:12] bits according
       * to huart->Init.StopBits value */
      MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
  
      /*-------------------------- USART CR3 Configuration -----------------------*/
  
      /* Configure
       * - UART HardWare Flow Control: set CTSE and RTSE bits according
       *   to huart->Init.HwFlowCtl value
       * - one-bit sampling method versus three samples' majority rule according
       *   to huart->Init.OneBitSampling */
      tmpreg = (uint32_t) huart->Init.HwFlowCtl | huart->Init.OneBitSampling;
      MODIFY_REG(huart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE | USART_CR3_ONEBIT), tmpreg);
  
      /*-------------------------- USART BRR Configuration -----------------------*/
      UART_GETCLOCKSOURCE(huart, clocksource);
  
      /* Check UART Over Sampling to set Baud Rate Register */
      if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
      {
          switch (clocksource)
          {
              case UART_CLOCKSOURCE_PCLK1:
                  usartdiv = (uint16_t) (UART_DIV_SAMPLING8(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
                  break;
              case UART_CLOCKSOURCE_HSI:
                  usartdiv = (uint16_t) (UART_DIV_SAMPLING8(HSI_VALUE, huart->Init.BaudRate));
                  break;
              case UART_CLOCKSOURCE_SYSCLK:
                  usartdiv = (uint16_t) (UART_DIV_SAMPLING8(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
                  break;
              case UART_CLOCKSOURCE_LSE:
                  usartdiv = (uint16_t) (UART_DIV_SAMPLING8(LSE_VALUE, huart->Init.BaudRate));
                  break;
              case UART_CLOCKSOURCE_UNDEFINED:
              default:
                  ret = HAL_ERROR;
                  break;
          }
  
          brrtemp  = usartdiv & 0xFFF0U;
          brrtemp |= (uint16_t) ((usartdiv & (uint16_t) 0x000FU) >> 1U);
          huart->Instance->BRR = brrtemp;
      }
      else
      {
          switch (clocksource)
          {
              case UART_CLOCKSOURCE_PCLK1:
                  huart->Instance->BRR = (uint16_t) (UART_DIV_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
                  break;
              case UART_CLOCKSOURCE_HSI:
                  huart->Instance->BRR = (uint16_t) (UART_DIV_SAMPLING16(HSI_VALUE, huart->Init.BaudRate));
                  break;
              case UART_CLOCKSOURCE_SYSCLK:
                  huart->Instance->BRR = (uint16_t) (UART_DIV_SAMPLING16(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
                  break;
              case UART_CLOCKSOURCE_LSE:
                  huart->Instance->BRR = (uint16_t) (UART_DIV_SAMPLING16(LSE_VALUE, huart->Init.BaudRate));
                  break;
              case UART_CLOCKSOURCE_UNDEFINED:
              default:
                  ret = HAL_ERROR;
                  break;
          }
      }
  
      return ret;
  } /* UART_SetConfig */
  
  /**
   * @brief Configure the UART peripheral advanced features.
   * @param huart UART handle.
   * @retval None
   */
  void UART_AdvFeatureConfig(UART_HandleTypeDef *huart)
  {
      /* Check whether the set of advanced features to configure is properly set */
      assert_param(IS_UART_ADVFEATURE_INIT(huart->AdvancedInit.AdvFeatureInit));
  
      /* if required, configure TX pin active level inversion */
      if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_TXINVERT_INIT))
      {
          assert_param(IS_UART_ADVFEATURE_TXINV(huart->AdvancedInit.TxPinLevelInvert));
          MODIFY_REG(huart->Instance->CR2, USART_CR2_TXINV, huart->AdvancedInit.TxPinLevelInvert);
      }
  
      /* if required, configure RX pin active level inversion */
      if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXINVERT_INIT))
      {
          assert_param(IS_UART_ADVFEATURE_RXINV(huart->AdvancedInit.RxPinLevelInvert));
          MODIFY_REG(huart->Instance->CR2, USART_CR2_RXINV, huart->AdvancedInit.RxPinLevelInvert);
      }
  
      /* if required, configure data inversion */
      if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DATAINVERT_INIT))
      {
          assert_param(IS_UART_ADVFEATURE_DATAINV(huart->AdvancedInit.DataInvert));
          MODIFY_REG(huart->Instance->CR2, USART_CR2_DATAINV, huart->AdvancedInit.DataInvert);
      }
  
      /* if required, configure RX/TX pins swap */
      if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_SWAP_INIT))
      {
          assert_param(IS_UART_ADVFEATURE_SWAP(huart->AdvancedInit.Swap));
          MODIFY_REG(huart->Instance->CR2, USART_CR2_SWAP, huart->AdvancedInit.Swap);
      }
  
      /* if required, configure RX overrun detection disabling */
      if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXOVERRUNDISABLE_INIT))
      {
          assert_param(IS_UART_OVERRUN(huart->AdvancedInit.OverrunDisable));
          MODIFY_REG(huart->Instance->CR3, USART_CR3_OVRDIS, huart->AdvancedInit.OverrunDisable);
      }
  
      /* if required, configure DMA disabling on reception error */
      if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DMADISABLEONERROR_INIT))
      {
          assert_param(IS_UART_ADVFEATURE_DMAONRXERROR(huart->AdvancedInit.DMADisableonRxError));
          MODIFY_REG(huart->Instance->CR3, USART_CR3_DDRE, huart->AdvancedInit.DMADisableonRxError);
      }
  
      /* if required, configure auto Baud rate detection scheme */
      if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_AUTOBAUDRATE_INIT))
      {
          assert_param(IS_USART_AUTOBAUDRATE_DETECTION_INSTANCE(huart->Instance));
          assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATE(huart->AdvancedInit.AutoBaudRateEnable));
          MODIFY_REG(huart->Instance->CR2, USART_CR2_ABREN, huart->AdvancedInit.AutoBaudRateEnable);
          /* set auto Baudrate detection parameters if detection is enabled */
          if (huart->AdvancedInit.AutoBaudRateEnable == UART_ADVFEATURE_AUTOBAUDRATE_ENABLE)
          {
              assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATEMODE(huart->AdvancedInit.AutoBaudRateMode));
              MODIFY_REG(huart->Instance->CR2, USART_CR2_ABRMODE, huart->AdvancedInit.AutoBaudRateMode);
          }
      }
  
      /* if required, configure MSB first on communication line */
      if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_MSBFIRST_INIT))
      {
          assert_param(IS_UART_ADVFEATURE_MSBFIRST(huart->AdvancedInit.MSBFirst));
          MODIFY_REG(huart->Instance->CR2, USART_CR2_MSBFIRST, huart->AdvancedInit.MSBFirst);
      }
  } /* UART_AdvFeatureConfig */
  
  /**
   * @brief Check the UART Idle State.
   * @param huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef UART_CheckIdleState(UART_HandleTypeDef *huart)
  {
      # if !defined(STM32F030x6) && !defined(STM32F030x8) && !defined(STM32F070xB) && !defined(STM32F070x6) && !defined(STM32F030xC)
      uint32_t tickstart = 0U;
      # endif /* !defined(STM32F030x6) && !defined(STM32F030x8)&& !defined(STM32F070xB)&& !defined(STM32F070x6)&& !defined(STM32F030xC) */
  
      /* Initialize the UART ErrorCode */
      huart->ErrorCode = HAL_UART_ERROR_NONE;
  
      # if !defined(STM32F030x6) && !defined(STM32F030x8) && !defined(STM32F070xB) && !defined(STM32F070x6) && !defined(STM32F030xC)
      /* Init tickstart for timeout managment*/
      tickstart = HAL_GetTick();
  
      /* TEACK and REACK bits in ISR are checked only when available (not available on all F0 devices).
       * Bits are defined for some specific devices, and are available only for UART instances supporting WakeUp from Stop Mode feature.
       */
      if (IS_UART_WAKEUP_FROMSTOP_INSTANCE(huart->Instance))
      {
          /* Check if the Transmitter is enabled */
          if ((huart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
          {
              /* Wait until TEACK flag is set */
              if (UART_WaitOnFlagUntilTimeout(huart, USART_ISR_TEACK, RESET, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
              {
                  /* Timeout occurred */
                  return HAL_TIMEOUT;
              }
          }
  
          /* Check if the Receiver is enabled */
          if ((huart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
          {
              /* Wait until REACK flag is set */
              if (UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
              {
                  /* Timeout occurred */
                  return HAL_TIMEOUT;
              }
          }
      }
      # endif /* !defined(STM32F030x6) && !defined(STM32F030x8)&& !defined(STM32F070xB)&& !defined(STM32F070x6)&& !defined(STM32F030xC) */
  
      /* Initialize the UART State */
      huart->gState  = HAL_UART_STATE_READY;
      huart->RxState = HAL_UART_STATE_READY;
  
      /* Process Unlocked */
      __HAL_UNLOCK(huart);
  
      return HAL_OK;
  } /* UART_CheckIdleState */
  
  /**
   * @brief  Handle UART Communication Timeout.
   * @param  huart UART handle.
   * @param  Flag Specifies the UART flag to check
   * @param  Status Flag status (SET or RESET)
   * @param  Tickstart Tick start value
   * @param  Timeout Timeout duration
   * @retval HAL status
   */
  HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)
  {
      /* Wait until flag is set */
      while ((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status)
      {
          /* Check for the Timeout */
          if (Timeout != HAL_MAX_DELAY)
          {
              if ((Timeout == 0U) || ((HAL_GetTick() - Tickstart) > Timeout))
              {
                  /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
                  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE));
                  CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
                  huart->gState  = HAL_UART_STATE_READY;
                  huart->RxState = HAL_UART_STATE_READY;
  
                  /* Process Unlocked */
                  __HAL_UNLOCK(huart);
                  return HAL_TIMEOUT;
              }
          }
      }
      return HAL_OK;
  }
  
  /**
   * @brief  End ongoing Tx transfer on UART peripheral (following error detection or Transmit completion).
   * @param  huart UART handle.
   * @retval None
   */
  static void UART_EndTxTransfer(UART_HandleTypeDef *huart)
  {
      /* Disable TXEIE and TCIE interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
  
      /* At end of Tx process, restore huart->gState to Ready */
      huart->gState = HAL_UART_STATE_READY;
  }
  
  /**
   * @brief  End ongoing Rx transfer on UART peripheral (following error detection or Reception completion).
   * @param  huart UART handle.
   * @retval None
   */
  static void UART_EndRxTransfer(UART_HandleTypeDef *huart)
  {
      /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
      /* At end of Rx process, restore huart->RxState to Ready */
      huart->RxState = HAL_UART_STATE_READY;
  }
  
  /**
   * @brief DMA UART transmit process complete callback.
   * @param hdma DMA handle.
   * @retval None
   */
  static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
  
      /* DMA Normal mode */
      if (HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
      {
          huart->TxXferCount = 0;
  
          /* Disable the DMA transfer for transmit request by resetting the DMAT bit
           * in the UART CR3 register */
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  
          /* Enable the UART Transmit Complete Interrupt */
          SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
      }
      /* DMA Circular mode */
      else
      {
          HAL_UART_TxCpltCallback(huart);
      }
  }
  
  /**
   * @brief DMA UART transmit process half complete callback.
   * @param hdma DMA handle.
   * @retval None
   */
  static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
  
      HAL_UART_TxHalfCpltCallback(huart);
  }
  
  /**
   * @brief DMA UART receive process complete callback.
   * @param hdma DMA handle.
   * @retval None
   */
  static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
  
      /* DMA Normal mode */
      if (HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC) )
      {
          huart->RxXferCount = 0U;
  
          /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
          CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
          /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
           * in the UART CR3 register */
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  
          /* At end of Rx process, restore huart->RxState to Ready */
          huart->RxState = HAL_UART_STATE_READY;
      }
  
      HAL_UART_RxCpltCallback(huart);
  }
  
  /**
   * @brief DMA UART receive process half complete callback.
   * @param hdma DMA handle.
   * @retval None
   */
  static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
  
      HAL_UART_RxHalfCpltCallback(huart);
  }
  
  /**
   * @brief DMA UART communication error callback.
   * @param hdma DMA handle.
   * @retval None
   */
  static void UART_DMAError(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
  
      /* Stop UART DMA Tx request if ongoing */
      if (  (huart->gState == HAL_UART_STATE_BUSY_TX) &&
        (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) )
      {
          huart->TxXferCount = 0U;
          UART_EndTxTransfer(huart);
      }
  
      /* Stop UART DMA Rx request if ongoing */
      if (  (huart->RxState == HAL_UART_STATE_BUSY_RX) &&
        (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) )
      {
          huart->RxXferCount = 0U;
          UART_EndRxTransfer(huart);
      }
  
      huart->ErrorCode |= HAL_UART_ERROR_DMA;
      HAL_UART_ErrorCallback(huart);
  }
  
  /**
   * @brief  DMA UART communication abort callback, when initiated by HAL services on Error
   *         (To be called at end of DMA Abort procedure following error occurrence).
   * @param  hdma DMA handle.
   * @retval None
   */
  static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
      huart->RxXferCount = 0U;
      huart->TxXferCount = 0U;
  
      HAL_UART_ErrorCallback(huart);
  }
  
  /**
   * @brief  DMA UART Tx communication abort callback, when initiated by user
   *         (To be called at end of DMA Tx Abort procedure following user abort request).
   * @note   When this callback is executed, User Abort complete call back is called only if no
   *         Abort still ongoing for Rx DMA Handle.
   * @param  hdma DMA handle.
   * @retval None
   */
  static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
  
      huart->hdmatx->XferAbortCallback = NULL;
  
      /* Check if an Abort process is still ongoing */
      if (huart->hdmarx != NULL)
      {
          if (huart->hdmarx->XferAbortCallback != NULL)
          {
              return;
          }
      }
  
      /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
      huart->TxXferCount = 0U;
      huart->RxXferCount = 0U;
  
      /* Reset errorCode */
      huart->ErrorCode = HAL_UART_ERROR_NONE;
  
      /* Clear the Error flags in the ICR register */
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
  
      /* Restore huart->gState and huart->RxState to Ready */
      huart->gState  = HAL_UART_STATE_READY;
      huart->RxState = HAL_UART_STATE_READY;
  
      /* Call user Abort complete callback */
      HAL_UART_AbortCpltCallback(huart);
  }
  
  /**
   * @brief  DMA UART Rx communication abort callback, when initiated by user
   *         (To be called at end of DMA Rx Abort procedure following user abort request).
   * @note   When this callback is executed, User Abort complete call back is called only if no
   *         Abort still ongoing for Tx DMA Handle.
   * @param  hdma DMA handle.
   * @retval None
   */
  static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
  
      huart->hdmarx->XferAbortCallback = NULL;
  
      /* Check if an Abort process is still ongoing */
      if (huart->hdmatx != NULL)
      {
          if (huart->hdmatx->XferAbortCallback != NULL)
          {
              return;
          }
      }
  
      /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
      huart->TxXferCount = 0U;
      huart->RxXferCount = 0U;
  
      /* Reset errorCode */
      huart->ErrorCode = HAL_UART_ERROR_NONE;
  
      /* Clear the Error flags in the ICR register */
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
  
      /* Restore huart->gState and huart->RxState to Ready */
      huart->gState  = HAL_UART_STATE_READY;
      huart->RxState = HAL_UART_STATE_READY;
  
      /* Call user Abort complete callback */
      HAL_UART_AbortCpltCallback(huart);
  }
  
  /**
   * @brief  DMA UART Tx communication abort callback, when initiated by user by a call to
   *         HAL_UART_AbortTransmit_IT API (Abort only Tx transfer)
   *         (This callback is executed at end of DMA Tx Abort procedure following user abort request,
   *         and leads to user Tx Abort Complete callback execution).
   * @param  hdma DMA handle.
   * @retval None
   */
  static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) (hdma->Parent);
  
      huart->TxXferCount = 0U;
  
      /* Restore huart->gState to Ready */
      huart->gState = HAL_UART_STATE_READY;
  
      /* Call user Abort complete callback */
      HAL_UART_AbortTransmitCpltCallback(huart);
  }
  
  /**
   * @brief  DMA UART Rx communication abort callback, when initiated by user by a call to
   *         HAL_UART_AbortReceive_IT API (Abort only Rx transfer)
   *         (This callback is executed at end of DMA Rx Abort procedure following user abort request,
   *         and leads to user Rx Abort Complete callback execution).
   * @param  hdma DMA handle.
   * @retval None
   */
  static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
  {
      UART_HandleTypeDef *huart = (UART_HandleTypeDef *) ((DMA_HandleTypeDef *) hdma)->Parent;
  
      huart->RxXferCount = 0U;
  
      /* Clear the Error flags in the ICR register */
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
  
      /* Restore huart->RxState to Ready */
      huart->RxState = HAL_UART_STATE_READY;
  
      /* Call user Abort complete callback */
      HAL_UART_AbortReceiveCpltCallback(huart);
  }
  
  /**
   * @brief  Send an amount of data in interrupt mode.
   * @note   Function is called under interruption only, once
   *         interruptions have been enabled by HAL_UART_Transmit_IT().
   * @param  huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
  {
      uint16_t *tmp;
  
      /* Check that a Tx process is ongoing */
      if (huart->gState == HAL_UART_STATE_BUSY_TX)
      {
          if (huart->TxXferCount == 0U)
          {
              /* Disable the UART Transmit Data Register Empty Interrupt */
              CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE);
  
              /* Enable the UART Transmit Complete Interrupt */
              SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
  
              return HAL_OK;
          }
          else
          {
              if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
              {
                  tmp = (uint16_t *) huart->pTxBuffPtr;
                  huart->Instance->TDR = (*tmp & (uint16_t) 0x01FFU);
                  huart->pTxBuffPtr   += 2U;
              }
              else
              {
                  huart->Instance->TDR = (uint8_t) (*huart->pTxBuffPtr++ & (uint8_t) 0xFFU);
              }
              huart->TxXferCount--;
  
              return HAL_OK;
          }
      }
      else
      {
          return HAL_BUSY;
      }
  } /* UART_Transmit_IT */
  
  /**
   * @brief  Wrap up transmission in non-blocking mode.
   * @param  huart pointer to a UART_HandleTypeDef structure that contains
   *               the configuration information for the specified UART module.
   * @retval HAL status
   */
  HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
  {
      /* Disable the UART Transmit Complete Interrupt */
      CLEAR_BIT(huart->Instance->CR1, USART_CR1_TCIE);
  
      /* Tx process is ended, restore huart->gState to Ready */
      huart->gState = HAL_UART_STATE_READY;
  
      HAL_UART_TxCpltCallback(huart);
  
      return HAL_OK;
  }
  
  /**
   * @brief  Receive an amount of data in interrupt mode.
   * @note   Function is called under interruption only, once
   *         interruptions have been enabled by HAL_UART_Receive_IT()
   * @param  huart UART handle.
   * @retval HAL status
   */
  HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
  {
      uint16_t *tmp;
      uint16_t uhMask = huart->Mask;
      uint16_t uhdata;
  
      /* Check that a Rx process is ongoing */
      if (huart->RxState == HAL_UART_STATE_BUSY_RX)
      {
          uhdata = (uint16_t) READ_REG(huart->Instance->RDR);
          if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
          {
              tmp  = (uint16_t *) huart->pRxBuffPtr;
              *tmp = (uint16_t) (uhdata & uhMask);
              huart->pRxBuffPtr += 2U;
          }
          else
          {
              *huart->pRxBuffPtr++ = (uint8_t) (uhdata & (uint8_t) uhMask);
          }
  
          if (--huart->RxXferCount == 0U)
          {
              /* Disable the UART Parity Error Interrupt and RXNE interrupt*/
              CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  
              /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
              CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
  
              /* Rx process is completed, restore huart->RxState to Ready */
              huart->RxState = HAL_UART_STATE_READY;
  
              HAL_UART_RxCpltCallback(huart);
  
              return HAL_OK;
          }
  
          return HAL_OK;
      }
      else
      {
          /* Clear RXNE interrupt flag */
          __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
  
          return HAL_BUSY;
      }
  } /* UART_Receive_IT */
  
  /**
   * @}
   */
  
  #endif /* HAL_UART_MODULE_ENABLED */
  
  /**
   * @}
   */
  
  /**
   * @}
   */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  