WebSVN – LedShow – Diff – /trunk/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_usart.c

   ******************************************************************************
   * @file    stm32f1xx_hal_usart.c
   * @author  MCD Application Team
   * @brief   USART HAL module driver.
   *          This file provides firmware functions to manage the following
-  *          functionalities of the Universal Synchronous Asynchronous Receiver Transmitter (USART) peripheral:
+  *          functionalities of the Universal Synchronous/Asynchronous Receiver Transmitter
+  *          Peripheral (USART).
   *           + Initialization and de-initialization functions
   *           + IO operation functions
   *           + Peripheral Control functions
   @verbatim
   ==============================================================================
                         ##### How to use this driver #####
   ==============================================================================
   [..]
     The USART HAL driver can be used as follows:
-    (#) Declare a USART_HandleTypeDef handle structure.
+    (#) Declare a USART_HandleTypeDef handle structure (eg. USART_HandleTypeDef husart).
-    (#) Initialize the USART low level resources by implementing the HAL_USART_MspInit () API:
+    (#) Initialize the USART low level resources by implementing the HAL_USART_MspInit() API:
         (##) Enable the USARTx interface clock.
         (##) USART pins configuration:
              (+++) Enable the clock for the USART GPIOs.
-             (+++) Configure the USART pins (TX as alternate function pull-up, RX as alternate function Input).
+             (+++) Configure the USART pins as alternate function pull-up.
         (##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(),
              HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs):
              (+++) Configure the USARTx interrupt priority.
              (+++) Enable the NVIC USART IRQ handle.
         (##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA()
              (+++) 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 USART DMA Tx/Rx handle.
              (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx channel.
-            (+++) Configure the priority and enable the NVIC for the transfer complete
-                  interrupt on the DMA Tx/Rx channel.
-            (+++) Configure the USARTx interrupt priority and enable the NVIC USART IRQ handle
+             (+++) Configure the USARTx interrupt priority and enable the NVIC USART IRQ handle
-                  (used for last byte sending completion detection in DMA non circular mode)
+                   (used for last byte sending completion detection in DMA non circular mode)
     (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware
         flow control and Mode(Receiver/Transmitter) in the husart Init structure.
     (#) Initialize the USART registers by calling the HAL_USART_Init() API:
        (+) __HAL_USART_DISABLE_IT: Disable the specified USART interrupt
      [..]
        (@) You can refer to the USART HAL driver header file for more useful macros
+    ##### Callback registration #####
+    ==================================
+    [..]
+    The compilation define USE_HAL_USART_REGISTER_CALLBACKS when set to 1
+    allows the user to configure dynamically the driver callbacks.
+    [..]
+    Use Function @ref HAL_USART_RegisterCallback() to register a user callback.
+    Function @ref HAL_USART_RegisterCallback() allows to register following callbacks:
+    (+) TxHalfCpltCallback        : Tx Half Complete Callback.
+    (+) TxCpltCallback            : Tx Complete Callback.
+    (+) RxHalfCpltCallback        : Rx Half Complete Callback.
+    (+) RxCpltCallback            : Rx Complete Callback.
+    (+) TxRxCpltCallback          : Tx Rx Complete Callback.
+    (+) ErrorCallback             : Error Callback.
+    (+) AbortCpltCallback         : Abort Complete Callback.
+    (+) MspInitCallback           : USART MspInit.
+    (+) MspDeInitCallback         : USART MspDeInit.
+    This function takes as parameters the HAL peripheral handle, the Callback ID
+    and a pointer to the user callback function.
+    [..]
+    Use function @ref HAL_USART_UnRegisterCallback() to reset a callback to the default
+    weak (surcharged) function.
+    @ref HAL_USART_UnRegisterCallback() takes as parameters the HAL peripheral handle,
+    and the Callback ID.
+    This function allows to reset following callbacks:
+    (+) TxHalfCpltCallback        : Tx Half Complete Callback.
+    (+) TxCpltCallback            : Tx Complete Callback.
+    (+) RxHalfCpltCallback        : Rx Half Complete Callback.
+    (+) RxCpltCallback            : Rx Complete Callback.
+    (+) TxRxCpltCallback          : Tx Rx Complete Callback.
+    (+) ErrorCallback             : Error Callback.
+    (+) AbortCpltCallback         : Abort Complete Callback.
+    (+) MspInitCallback           : USART MspInit.
+    (+) MspDeInitCallback         : USART MspDeInit.
+    [..]
+    By default, after the @ref HAL_USART_Init() and when the state is HAL_USART_STATE_RESET
+    all callbacks are set to the corresponding weak (surcharged) functions:
+    examples @ref HAL_USART_TxCpltCallback(), @ref HAL_USART_RxHalfCpltCallback().
+    Exception done for MspInit and MspDeInit functions that are respectively
+    reset to the legacy weak (surcharged) functions in the @ref HAL_USART_Init()
+    and @ref HAL_USART_DeInit() only when these callbacks are null (not registered beforehand).
+    If not, MspInit or MspDeInit are not null, the @ref HAL_USART_Init() and @ref HAL_USART_DeInit()
+    keep and use the user MspInit/MspDeInit callbacks (registered beforehand).
+    [..]
+    Callbacks can be registered/unregistered in HAL_USART_STATE_READY state only.
+    Exception done MspInit/MspDeInit that can be registered/unregistered
+    in HAL_USART_STATE_READY or HAL_USART_STATE_RESET state, thus registered (user)
+    MspInit/DeInit callbacks can be used during the Init/DeInit.
+    In that case first register the MspInit/MspDeInit user callbacks
+    using @ref HAL_USART_RegisterCallback() before calling @ref HAL_USART_DeInit()
+    or @ref HAL_USART_Init() function.
+    [..]
+    When The compilation define USE_HAL_USART_REGISTER_CALLBACKS is set to 0 or
+    not defined, the callback registration feature is not available
+    and weak (surcharged) callbacks are used.
   @endverbatim
      [..]
        (@) Additionnal remark: 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.
            Depending on the frame length defined by the M bit (8-bits or 9-bits),
     |    1    |    1      |    | SB | 8 bit data | PB | STB |     |
     +-------------------------------------------------------------+
   ******************************************************************************
   * @attention
+  *
-  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
-  * Redistribution and use in source and binary forms, with or without modification,
+  * This software component is licensed by ST under BSD 3-Clause license,
-  * are permitted provided that the following conditions are met:
+  * the "License"; You may not use this file except in compliance with the
-  *   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.
+  * License. You may obtain a copy of the License at:
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
+  *                        opensource.org/licenses/BSD-3-Clause
-  *      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 ------------------------------------------------------------------*/
 /** @defgroup USART USART
   * @brief HAL USART Synchronous module driver
   * @{
   */
 #ifdef HAL_USART_MODULE_ENABLED
 /* Private typedef -----------------------------------------------------------*/
 /* Private define ------------------------------------------------------------*/
 /** @addtogroup USART_Private_Constants
   * @{
   */
 /* Private function prototypes -----------------------------------------------*/
 /* Private functions ---------------------------------------------------------*/
 /** @addtogroup USART_Private_Functions
   * @{
   */
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+void USART_InitCallbacksToDefault(USART_HandleTypeDef *husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
 static void USART_EndTxTransfer(USART_HandleTypeDef *husart);
 static void USART_EndRxTransfer(USART_HandleTypeDef *husart);
 static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart);
 static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart);
 static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart);
 static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart);
-static void USART_SetConfig (USART_HandleTypeDef *husart);
+static void USART_SetConfig(USART_HandleTypeDef *husart);
 static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
 static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
 static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
 static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
 static void USART_DMAError(DMA_HandleTypeDef *hdma);
 /** @defgroup USART_Exported_Functions_Group1 USART Initialization and de-initialization functions
   *  @brief    Initialization and Configuration functions
+  *
 @verbatim
   ==============================================================================
-            ##### Initialization and Configuration functions #####
+              ##### Initialization and Configuration functions #####
   ==============================================================================
   [..]
   This subsection provides a set of functions allowing to initialize the USART
   in asynchronous and in synchronous modes.
   (+) For the asynchronous mode only these parameters can be configured:
       (++) USART LastBit
       (++) Receiver/transmitter modes
   [..]
     The HAL_USART_Init() function follows the USART  synchronous configuration
-    procedure (details for the procedure are available in reference manuals
+    procedures (details for the procedures are available in reference manuals
     (RM0008 for STM32F10Xxx MCUs and RM0041 for STM32F100xx MCUs)).
 @endverbatim
   * @{
   */
 /**
-  * @brief  Initializes the USART mode according to the specified
+  * @brief  Initialize the USART mode according to the specified
-  *         parameters in the USART_InitTypeDef and create the associated handle.
+  *         parameters in the USART_InitTypeDef and initialize the associated handle.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart)
+{
   /* Check the USART handle allocation */
-  if(husart == NULL)
+  if (husart == NULL)
+  {
     return HAL_ERROR;
+  }
   /* Check the parameters */
   assert_param(IS_USART_INSTANCE(husart->Instance));
-  if(husart->State == HAL_USART_STATE_RESET)
+  if (husart->State == HAL_USART_STATE_RESET)
+  {
     /* Allocate lock resource and initialize it */
     husart->Lock = HAL_UNLOCKED;
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+    USART_InitCallbacksToDefault(husart);
+    if (husart->MspInitCallback == NULL)
+    {
+      husart->MspInitCallback = HAL_USART_MspInit;
+    }
     /* Init the low level hardware */
+    husart->MspInitCallback(husart);
+#else
+    /* Init the low level hardware : GPIO, CLOCK */
     HAL_USART_MspInit(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+  }
   husart->State = HAL_USART_STATE_BUSY;
   /* Set the USART Communication parameters */
   USART_SetConfig(husart);
   /* Enable the Peripheral */
   __HAL_USART_ENABLE(husart);
   /* Initialize the USART state */
   husart->ErrorCode = HAL_USART_ERROR_NONE;
-  husart->State= HAL_USART_STATE_READY;
+  husart->State = HAL_USART_STATE_READY;
   return HAL_OK;
+}
 /**
   * @brief  DeInitializes the USART peripheral.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart)
+{
   /* Check the USART handle allocation */
-  if(husart == NULL)
+  if (husart == NULL)
+  {
     return HAL_ERROR;
+  }
   /* Check the parameters */
   assert_param(IS_USART_INSTANCE(husart->Instance));
   husart->State = HAL_USART_STATE_BUSY;
+  /* Disable the Peripheral */
+  __HAL_USART_DISABLE(husart);
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+  if (husart->MspDeInitCallback == NULL)
+  {
+    husart->MspDeInitCallback = HAL_USART_MspDeInit;
+  }
+  /* DeInit the low level hardware */
+  husart->MspDeInitCallback(husart);
+#else
   /* DeInit the low level hardware */
   HAL_USART_MspDeInit(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
   husart->ErrorCode = HAL_USART_ERROR_NONE;
   husart->State = HAL_USART_STATE_RESET;
   /* Release Lock */
   return HAL_OK;
+}
 /**
   * @brief  USART MSP Init.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 __weak void HAL_USART_MspInit(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
    */
+}
 /**
   * @brief  USART MSP DeInit.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 __weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
   /* NOTE: This function should not be modified, when the callback is needed,
            the HAL_USART_MspDeInit could be implemented in the user file
    */
+}
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+/**
+  * @brief  Register a User USART Callback
+  *         To be used instead of the weak predefined callback
+  * @param  husart usart handle
+  * @param  CallbackID ID of the callback to be registered
+  *         This parameter can be one of the following values:
+  *           @arg @ref HAL_USART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
+  *           @arg @ref HAL_USART_TX_COMPLETE_CB_ID Tx Complete Callback ID
+  *           @arg @ref HAL_USART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
+  *           @arg @ref HAL_USART_RX_COMPLETE_CB_ID Rx Complete Callback ID
+  *           @arg @ref HAL_USART_TX_RX_COMPLETE_CB_ID Rx Complete Callback ID
+  *           @arg @ref HAL_USART_ERROR_CB_ID Error Callback ID
+  *           @arg @ref HAL_USART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
+  *           @arg @ref HAL_USART_MSPINIT_CB_ID MspInit Callback ID
+  *           @arg @ref HAL_USART_MSPDEINIT_CB_ID MspDeInit Callback ID
+  * @param  pCallback pointer to the Callback function
+  * @retval HAL status
++  */
+HAL_StatusTypeDef HAL_USART_RegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID, pUSART_CallbackTypeDef pCallback)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  if (pCallback == NULL)
+  {
+    /* Update the error code */
+    husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
+    return HAL_ERROR;
+  }
+  /* Process locked */
+  __HAL_LOCK(husart);
+  if (husart->State == HAL_USART_STATE_READY)
+  {
+    switch (CallbackID)
+    {
+      case HAL_USART_TX_HALFCOMPLETE_CB_ID :
+        husart->TxHalfCpltCallback = pCallback;
+        break;
+      case HAL_USART_TX_COMPLETE_CB_ID :
+        husart->TxCpltCallback = pCallback;
+        break;
+      case HAL_USART_RX_HALFCOMPLETE_CB_ID :
+        husart->RxHalfCpltCallback = pCallback;
+        break;
+      case HAL_USART_RX_COMPLETE_CB_ID :
+        husart->RxCpltCallback = pCallback;
+        break;
+      case HAL_USART_TX_RX_COMPLETE_CB_ID :
+        husart->TxRxCpltCallback = pCallback;
+        break;
+      case HAL_USART_ERROR_CB_ID :
+        husart->ErrorCallback = pCallback;
+        break;
+      case HAL_USART_ABORT_COMPLETE_CB_ID :
+        husart->AbortCpltCallback = pCallback;
+        break;
+      case HAL_USART_MSPINIT_CB_ID :
+        husart->MspInitCallback = pCallback;
+        break;
+      case HAL_USART_MSPDEINIT_CB_ID :
+        husart->MspDeInitCallback = pCallback;
+        break;
+      default :
+        /* Update the error code */
+        husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
+        /* Return error status */
+        status =  HAL_ERROR;
+        break;
+    }
+  }
+  else if (husart->State == HAL_USART_STATE_RESET)
+  {
+    switch (CallbackID)
+    {
+      case HAL_USART_MSPINIT_CB_ID :
+        husart->MspInitCallback = pCallback;
+        break;
+      case HAL_USART_MSPDEINIT_CB_ID :
+        husart->MspDeInitCallback = pCallback;
+        break;
+      default :
+        /* Update the error code */
+        husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
+        /* Return error status */
+        status =  HAL_ERROR;
+        break;
+    }
+  }
+  else
+  {
+    /* Update the error code */
+    husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
+    /* Return error status */
+    status =  HAL_ERROR;
+  }
+  /* Release Lock */
+  __HAL_UNLOCK(husart);
+  return status;
+}
+/**
+  * @brief  Unregister an USART Callback
+  *         USART callaback is redirected to the weak predefined callback
+  * @param  husart usart handle
+  * @param  CallbackID ID of the callback to be unregistered
+  *         This parameter can be one of the following values:
+  *           @arg @ref HAL_USART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID
+  *           @arg @ref HAL_USART_TX_COMPLETE_CB_ID Tx Complete Callback ID
+  *           @arg @ref HAL_USART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID
+  *           @arg @ref HAL_USART_RX_COMPLETE_CB_ID Rx Complete Callback ID
+  *           @arg @ref HAL_USART_TX_RX_COMPLETE_CB_ID Rx Complete Callback ID
+  *           @arg @ref HAL_USART_ERROR_CB_ID Error Callback ID
+  *           @arg @ref HAL_USART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID
+  *           @arg @ref HAL_USART_MSPINIT_CB_ID MspInit Callback ID
+  *           @arg @ref HAL_USART_MSPDEINIT_CB_ID MspDeInit Callback ID
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_USART_UnRegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID)
+{
+  HAL_StatusTypeDef status = HAL_OK;
+  /* Process locked */
+  __HAL_LOCK(husart);
+  if (husart->State == HAL_USART_STATE_READY)
+  {
+    switch (CallbackID)
+    {
+      case HAL_USART_TX_HALFCOMPLETE_CB_ID :
+        husart->TxHalfCpltCallback = HAL_USART_TxHalfCpltCallback;               /* Legacy weak  TxHalfCpltCallback       */
+        break;
+      case HAL_USART_TX_COMPLETE_CB_ID :
+        husart->TxCpltCallback = HAL_USART_TxCpltCallback;                       /* Legacy weak TxCpltCallback            */
+        break;
+      case HAL_USART_RX_HALFCOMPLETE_CB_ID :
+        husart->RxHalfCpltCallback = HAL_USART_RxHalfCpltCallback;               /* Legacy weak RxHalfCpltCallback        */
+        break;
+      case HAL_USART_RX_COMPLETE_CB_ID :
+        husart->RxCpltCallback = HAL_USART_RxCpltCallback;                       /* Legacy weak RxCpltCallback            */
+        break;
+      case HAL_USART_TX_RX_COMPLETE_CB_ID :
+        husart->TxRxCpltCallback = HAL_USART_TxRxCpltCallback;                   /* Legacy weak TxRxCpltCallback            */
+        break;
+      case HAL_USART_ERROR_CB_ID :
+        husart->ErrorCallback = HAL_USART_ErrorCallback;                         /* Legacy weak ErrorCallback             */
+        break;
+      case HAL_USART_ABORT_COMPLETE_CB_ID :
+        husart->AbortCpltCallback = HAL_USART_AbortCpltCallback;                 /* Legacy weak AbortCpltCallback         */
+        break;
+      case HAL_USART_MSPINIT_CB_ID :
+        husart->MspInitCallback = HAL_USART_MspInit;                             /* Legacy weak MspInitCallback           */
+        break;
+      case HAL_USART_MSPDEINIT_CB_ID :
+        husart->MspDeInitCallback = HAL_USART_MspDeInit;                         /* Legacy weak MspDeInitCallback         */
+        break;
+      default :
+        /* Update the error code */
+        husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
+        /* Return error status */
+        status =  HAL_ERROR;
+        break;
+    }
+  }
+  else if (husart->State == HAL_USART_STATE_RESET)
+  {
+    switch (CallbackID)
+    {
+      case HAL_USART_MSPINIT_CB_ID :
+        husart->MspInitCallback = HAL_USART_MspInit;
+        break;
+      case HAL_USART_MSPDEINIT_CB_ID :
+        husart->MspDeInitCallback = HAL_USART_MspDeInit;
+        break;
+      default :
+        /* Update the error code */
+        husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
+        /* Return error status */
+        status =  HAL_ERROR;
+        break;
+    }
+  }
+  else
+  {
+    /* Update the error code */
+    husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK;
+    /* Return error status */
+    status =  HAL_ERROR;
+  }
+  /* Release Lock */
+  __HAL_UNLOCK(husart);
+  return status;
+}
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
 /**
   * @}
   */
 /** @defgroup USART_Exported_Functions_Group2 IO operation functions
   *  @brief   USART Transmit and Receive functions
+  *
 @verbatim
   ==============================================================================
-                      ##### IO operation functions #####
+                         ##### IO operation functions #####
   ==============================================================================
   [..]
     This subsection provides a set of functions allowing to manage the USART synchronous
     data transfers.
              or DMA, These API's return the HAL status.
              The end of the data processing will be indicated through the
              dedicated USART IRQ when using Interrupt mode or the DMA IRQ when
              using DMA mode.
              The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback()
-             user callbacks
+              user callbacks
              will be executed respectively at the end of the transmit or Receive process
              The HAL_USART_ErrorCallback() user callback will be executed when a communication
              error is detected
     (#) Blocking mode APIs are :
         (++) HAL_USART_RxHalfCpltCallback()
         (++) HAL_USART_RxCpltCallback()
         (++) HAL_USART_ErrorCallback()
         (++) HAL_USART_TxRxCpltCallback()
+    (#) Non-Blocking mode transfers could be aborted using Abort API's :
+        (++) HAL_USART_Abort()
+        (++) HAL_USART_Abort_IT()
+    (#) For Abort services based on interrupts (HAL_USART_Abort_IT), a Abort Complete Callbacks is provided:
+        (++) HAL_USART_AbortCpltCallback()
+    (#) 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_USART_ErrorCallback() user callback is executed. Transfer is kept ongoing on USART 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_USART_ErrorCallback() user callback is executed.
 @endverbatim
   * @{
   */
 /**
   * @brief  Simplex Send an amount of data in blocking mode.
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the sent data is handled as a set of u16. In this case, Size must indicate the number
+  *         of u16 provided through pTxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
   *                 the configuration information for the specified USART module.
-  * @param  pTxData: Pointer to data buffer
+  * @param  pTxData Pointer to data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be sent
+  * @param  Size    Amount of data elements (u8 or u16) to be sent.
-  * @param  Timeout: Timeout duration
+  * @param  Timeout Timeout duration.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout)
+{
-  uint16_t* tmp;
+  uint16_t *tmp;
   uint32_t tickstart = 0U;
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pTxData == NULL) || (Size == 0U))
+    if ((pTxData == NULL) || (Size == 0))
+    {
       return  HAL_ERROR;
+    }
     /* Process Locked */
     __HAL_LOCK(husart);
     husart->ErrorCode = HAL_USART_ERROR_NONE;
     husart->State = HAL_USART_STATE_BUSY_TX;
-    /* Init tickstart for timeout managment */
+    /* Init tickstart for timeout management */
     tickstart = HAL_GetTick();
     husart->TxXferSize = Size;
     husart->TxXferCount = Size;
-    while(husart->TxXferCount > 0U)
+    while (husart->TxXferCount > 0U)
+    {
       husart->TxXferCount--;
-      if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+      if (husart->Init.WordLength == USART_WORDLENGTH_9B)
+      {
         /* Wait for TC flag in order to write data in DR */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
-        tmp = (uint16_t*) pTxData;
+        tmp = (uint16_t *) pTxData;
-        WRITE_REG(husart->Instance->DR, (*tmp & (uint16_t)0x01FF));
+        husart->Instance->DR = (*tmp & (uint16_t)0x01FF);
-        if(husart->Init.Parity == USART_PARITY_NONE)
+        if (husart->Init.Parity == USART_PARITY_NONE)
+        {
           pTxData += 2U;
+        }
         else
+        {
           pTxData += 1U;
+        }
+      }
       else
+      {
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
-        WRITE_REG(husart->Instance->DR, (*pTxData++ & (uint8_t)0xFF));
+        husart->Instance->DR = (*pTxData++ & (uint8_t)0xFF);
+      }
+    }
-    if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
+    if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
+    {
       return HAL_TIMEOUT;
+    }
     husart->State = HAL_USART_STATE_READY;
+  }
+}
 /**
   * @brief  Full-Duplex Receive an amount of data in blocking mode.
+  * @note   To receive synchronous data, dummy data are simultaneously transmitted.
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the received data is handled as a set of u16. In this case, Size must indicate the number
+  *         of u16 available through pRxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
   *                 the configuration information for the specified USART module.
-  * @param  pRxData: Pointer to data buffer
+  * @param  pRxData Pointer to data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be received
+  * @param  Size    Amount of data elements (u8 or u16) to be received.
-  * @param  Timeout: Timeout duration
+  * @param  Timeout Timeout duration.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
+{
-  uint16_t* tmp;
+  uint16_t *tmp;
   uint32_t tickstart = 0U;
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pRxData == NULL) || (Size == 0U))
+    if ((pRxData == NULL) || (Size == 0))
+    {
       return  HAL_ERROR;
+    }
     /* Process Locked */
     __HAL_LOCK(husart);
     husart->ErrorCode = HAL_USART_ERROR_NONE;
     husart->State = HAL_USART_STATE_BUSY_RX;
-    /* Init tickstart for timeout managment */
+    /* Init tickstart for timeout management */
     tickstart = HAL_GetTick();
     husart->RxXferSize = Size;
     husart->RxXferCount = Size;
     /* Check the remain data to be received */
-    while(husart->RxXferCount > 0U)
+    while (husart->RxXferCount > 0U)
+    {
       husart->RxXferCount--;
-      if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+      if (husart->Init.WordLength == USART_WORDLENGTH_9B)
+      {
         /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
         /* Send dummy byte in order to generate clock */
-        WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x01FF));
+        husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);
         /* Wait for RXNE Flag */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
-        tmp = (uint16_t*) pRxData ;
+        tmp = (uint16_t *) pRxData ;
-        if(husart->Init.Parity == USART_PARITY_NONE)
+        if (husart->Init.Parity == USART_PARITY_NONE)
+        {
           *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);
-          pRxData +=2U;
+          pRxData += 2U;
+        }
         else
+        {
           *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);
-          pRxData +=1U;
+          pRxData += 1U;
+        }
+      }
       else
+      {
         /* Wait until TXE flag is set to send dummy byte in order to generate the clock for the slave to send data */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
         /* Send Dummy Byte in order to generate clock */
-        WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x00FF));
+        husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FF);
         /* Wait until RXNE flag is set to receive the byte */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
-        if(husart->Init.Parity == USART_PARITY_NONE)
+        if (husart->Init.Parity == USART_PARITY_NONE)
+        {
           /* Receive data */
           *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);
+        }
         else
+        {
           /* Receive data */
           *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);
+        }
+      }
+    }
     husart->State = HAL_USART_STATE_READY;
     return HAL_BUSY;
+  }
+}
 /**
-  * @brief  Full-Duplex Send receive an amount of data in full-duplex mode (blocking mode).
+  * @brief  Full-Duplex Send and Receive an amount of data in full-duplex mode (blocking mode).
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number
+  *         of u16 available through pTxData and through pRxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
   *                 the configuration information for the specified USART module.
-  * @param  pTxData: Pointer to data transmitted buffer
+  * @param  pTxData Pointer to TX data buffer (u8 or u16 data elements).
-  * @param  pRxData: Pointer to data received buffer
+  * @param  pRxData Pointer to RX data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be sent
+  * @param  Size    Amount of data elements (u8 or u16) to be sent (same amount to be received).
-  * @param  Timeout: Timeout duration
+  * @param  Timeout Timeout duration
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout)
+{
-  uint16_t* tmp;
+  uint16_t *tmp;
   uint32_t tickstart = 0U;
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
+    if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0))
+    {
       return  HAL_ERROR;
+    }
     /* Process Locked */
     __HAL_LOCK(husart);
     husart->ErrorCode = HAL_USART_ERROR_NONE;
     husart->State = HAL_USART_STATE_BUSY_RX;
-    /* Init tickstart for timeout managment */
+    /* Init tickstart for timeout management */
     tickstart = HAL_GetTick();
     husart->RxXferSize = Size;
     husart->TxXferSize = Size;
     husart->TxXferCount = Size;
     husart->RxXferCount = Size;
     /* Check the remain data to be received */
-    while(husart->TxXferCount > 0U)
+    while (husart->TxXferCount > 0U)
+    {
       husart->TxXferCount--;
       husart->RxXferCount--;
-      if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+      if (husart->Init.WordLength == USART_WORDLENGTH_9B)
+      {
         /* Wait for TC flag in order to write data in DR */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
-        tmp = (uint16_t*) pTxData;
+        tmp = (uint16_t *) pTxData;
-        WRITE_REG(husart->Instance->DR, (*tmp & (uint16_t)0x01FF));
+        husart->Instance->DR = (*tmp & (uint16_t)0x01FF);
-        if(husart->Init.Parity == USART_PARITY_NONE)
+        if (husart->Init.Parity == USART_PARITY_NONE)
+        {
           pTxData += 2U;
+        }
         else
+        {
           pTxData += 1U;
+        }
         /* Wait for RXNE Flag */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
-        tmp = (uint16_t*) pRxData ;
+        tmp = (uint16_t *) pRxData ;
-        if(husart->Init.Parity == USART_PARITY_NONE)
+        if (husart->Init.Parity == USART_PARITY_NONE)
+        {
           *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);
           pRxData += 2U;
+        }
         else
+        }
+      }
       else
+      {
         /* Wait for TC flag in order to write data in DR */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
-        WRITE_REG(husart->Instance->DR, (*pTxData++ & (uint8_t)0x00FF));
+        husart->Instance->DR = (*pTxData++ & (uint8_t)0x00FF);
         /* Wait for RXNE Flag */
-        if(USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+        if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
+        {
           return HAL_TIMEOUT;
+        }
-        if(husart->Init.Parity == USART_PARITY_NONE)
+        if (husart->Init.Parity == USART_PARITY_NONE)
+        {
           /* Receive data */
           *pRxData++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);
+        }
         else
+  }
+}
 /**
   * @brief  Simplex Send an amount of data in non-blocking mode.
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the sent data is handled as a set of u16. In this case, Size must indicate the number
+  *         of u16 provided through pTxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
-  *                the configuration information for the specified USART module.
+  *                 the configuration information for the specified USART module.
-  * @param  pTxData: Pointer to data buffer
+  * @param  pTxData Pointer to data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be sent
+  * @param  Size    Amount of data elements (u8 or u16) to be sent.
   * @retval HAL status
   * @note   The USART errors are not managed to avoid the overrun error.
   */
 HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)
+{
-  /* Check that a Tx process is not already ongoing */
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pTxData == NULL) || (Size == 0U))
+    if ((pTxData == NULL) || (Size == 0))
+    {
       return HAL_ERROR;
+    }
     /* Process Locked */
     __HAL_LOCK(husart);
     husart->pTxBuffPtr = pTxData;
     husart->TxXferSize = Size;
     /* Process Unlocked */
     __HAL_UNLOCK(husart);
     /* Enable the USART Transmit Data Register Empty Interrupt */
-    __HAL_USART_ENABLE_IT(husart, USART_IT_TXE);
+    SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
     return HAL_OK;
+  }
   else
+  {
+  }
+}
 /**
   * @brief  Simplex Receive an amount of data in non-blocking mode.
+  * @note   To receive synchronous data, dummy data are simultaneously transmitted.
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the received data is handled as a set of u16. In this case, Size must indicate the number
+  *         of u16 available through pRxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
-  *                the configuration information for the specified USART module.
+  *                 the configuration information for the specified USART module.
-  * @param  pRxData: Pointer to data buffer
+  * @param  pRxData Pointer to data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be received
+  * @param  Size    Amount of data elements (u8 or u16) to be received.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
+{
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pRxData == NULL) || (Size == 0U))
+    if ((pRxData == NULL) || (Size == 0))
+    {
       return HAL_ERROR;
+    }
     /* Process Locked */
     __HAL_LOCK(husart);
     husart->State = HAL_USART_STATE_BUSY_RX;
     /* Process Unlocked */
     __HAL_UNLOCK(husart);
-    /* Enable the USART Data Register not empty Interrupt */
+    /* Enable the USART Parity Error and Data Register not empty Interrupts */
-    __HAL_USART_ENABLE_IT(husart, USART_IT_RXNE);
+    SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
-    /* Enable the USART Parity Error Interrupt */
-    __HAL_USART_ENABLE_IT(husart, USART_IT_PE);
     /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
-    __HAL_USART_ENABLE_IT(husart, USART_IT_ERR);
+    SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
     /* Send dummy byte in order to generate the clock for the slave to send data */
-    WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x01FF));
+    husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);
     return HAL_OK;
+  }
   else
+  {
     return HAL_BUSY;
+  }
+}
 /**
-  * @brief  Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).
+  * @brief  Full-Duplex Send and Receive an amount of data in full-duplex mode (non-blocking).
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number
+  *         of u16 available through pTxData and through pRxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
   *                 the configuration information for the specified USART module.
-  * @param  pTxData: Pointer to data transmitted buffer
+  * @param  pTxData Pointer to TX data buffer (u8 or u16 data elements).
-  * @param  pRxData: Pointer to data received buffer
+  * @param  pRxData Pointer to RX data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be received
+  * @param  Size    Amount of data elements (u8 or u16) to be sent (same amount to be received).
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData,  uint16_t Size)
+{
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
+    if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0))
+    {
       return HAL_ERROR;
+    }
     /* Process Locked */
     __HAL_LOCK(husart);
     /* Process Unlocked */
     __HAL_UNLOCK(husart);
     /* Enable the USART Data Register not empty Interrupt */
-    __HAL_USART_ENABLE_IT(husart, USART_IT_RXNE);
+    SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);
     /* Enable the USART Parity Error Interrupt */
-    __HAL_USART_ENABLE_IT(husart, USART_IT_PE);
+    SET_BIT(husart->Instance->CR1, USART_CR1_PEIE);
     /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */
-    __HAL_USART_ENABLE_IT(husart, USART_IT_ERR);
+    SET_BIT(husart->Instance->CR3, USART_CR3_EIE);
     /* Enable the USART Transmit Data Register Empty Interrupt */
-    __HAL_USART_ENABLE_IT(husart, USART_IT_TXE);
+    SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
     return HAL_OK;
+  }
   else
+  {
     return HAL_BUSY;
+  }
+}
 /**
-  * @brief  Simplex Send an amount of data in non-blocking mode.
+  * @brief  Simplex Send an amount of data in DMA mode.
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the sent data is handled as a set of u16. In this case, Size must indicate the number
+  *         of u16 provided through pTxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
   *                 the configuration information for the specified USART module.
-  * @param  pTxData: Pointer to data buffer
+  * @param  pTxData Pointer to data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be sent
+  * @param  Size    Amount of data elements (u8 or u16) to be sent.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size)
+{
   uint32_t *tmp;
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pTxData == NULL) || (Size == 0U))
+    if ((pTxData == NULL) || (Size == 0))
+    {
       return HAL_ERROR;
+    }
     /* Process Locked */
     __HAL_LOCK(husart);
     /* Set the DMA abort callback */
     husart->hdmatx->XferAbortCallback = NULL;
     /* Enable the USART transmit DMA channel */
-    tmp = (uint32_t*)&pTxData;
+    tmp = (uint32_t *)&pTxData;
-    HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
+    HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->DR, Size);
     /* Clear the TC flag in the SR register by writing 0 to it */
     __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC);
     /* Process Unlocked */
     return HAL_BUSY;
+  }
+}
 /**
-  * @brief  Full-Duplex Receive an amount of data in non-blocking mode.
+  * @brief  Full-Duplex Receive an amount of data in DMA mode.
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the received data is handled as a set of u16. In this case, Size must indicate the number
+  *         of u16 available through pRxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
   *                 the configuration information for the specified USART module.
-  * @param  pRxData: Pointer to data buffer
+  * @param  pRxData Pointer to data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be received
+  * @param  Size    Amount of data elements (u8 or u16) to be received.
   * @retval HAL status
   * @note   The USART DMA transmit channel must be configured in order to generate the clock for the slave.
   * @note   When the USART parity is enabled (PCE = 1) the data received contain the parity bit.
   */
 HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size)
+{
   uint32_t *tmp;
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pRxData == NULL) || (Size == 0U))
+    if ((pRxData == NULL) || (Size == 0))
+    {
       return HAL_ERROR;
+    }
     /* Process Locked */
     /* Set the DMA AbortCpltCallback */
     husart->hdmatx->XferAbortCallback = NULL;
     /* Enable the USART receive DMA channel */
-    tmp = (uint32_t*)&pRxData;
+    tmp = (uint32_t *)&pRxData;
-    HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size);
+    HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t *)tmp, Size);
     /* Enable the USART transmit DMA channel: the transmit channel is used in order
        to generate in the non-blocking mode the clock to the slave device,
        this mode isn't a simplex receive mode but a full-duplex receive one */
-    HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
+    HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->DR, Size);
     /* Clear the Overrun flag just before enabling the DMA Rx request: mandatory for the second transfer */
     __HAL_USART_CLEAR_OREFLAG(husart);
     /* Process Unlocked */
     return HAL_BUSY;
+  }
+}
 /**
-  * @brief  Full-Duplex Transmit Receive an amount of data in non-blocking mode.
+  * @brief  Full-Duplex Transmit Receive an amount of data in DMA mode.
+  * @note   When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01),
+  *         the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number
+  *         of u16 available through pTxData and through pRxData.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart  Pointer to a USART_HandleTypeDef structure that contains
   *                 the configuration information for the specified USART module.
-  * @param  pTxData: Pointer to data transmitted buffer
+  * @param  pTxData Pointer to TX data buffer (u8 or u16 data elements).
-  * @param  pRxData: Pointer to data received buffer
+  * @param  pRxData Pointer to RX data buffer (u8 or u16 data elements).
-  * @param  Size: Amount of data to be received
+  * @param  Size    Amount of data elements (u8 or u16) to be received/sent.
   * @note   When the USART parity is enabled (PCE = 1) the data received contain the parity bit.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size)
+{
   uint32_t *tmp;
-  if(husart->State == HAL_USART_STATE_READY)
+  if (husart->State == HAL_USART_STATE_READY)
+  {
-    if((pTxData == NULL) || (pRxData == NULL) || (Size == 0U))
+    if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0))
+    {
       return HAL_ERROR;
+    }
     /* Process Locked */
     __HAL_LOCK(husart);
     /* Set the DMA abort callback */
     husart->hdmarx->XferAbortCallback = NULL;
     /* Enable the USART receive DMA channel */
-    tmp = (uint32_t*)&pRxData;
+    tmp = (uint32_t *)&pRxData;
-    HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t*)tmp, Size);
+    HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t *)tmp, Size);
     /* Enable the USART transmit DMA channel */
-    tmp = (uint32_t*)&pTxData;
+    tmp = (uint32_t *)&pTxData;
-    HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t*)tmp, (uint32_t)&husart->Instance->DR, Size);
+    HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->DR, Size);
     /* Clear the TC flag in the SR register by writing 0 to it */
     __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC);
     /* Clear the Overrun flag: mandatory for the second transfer in circular mode */
     return HAL_BUSY;
+  }
+}
 /**
-  * @brief Pauses the DMA Transfer.
+  * @brief  Pauses the DMA Transfer.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart)
+{
   /* Process Locked */
   return HAL_OK;
+}
 /**
-  * @brief Resumes the DMA Transfer.
+  * @brief  Resumes the DMA Transfer.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart)
+{
   /* Process Locked */
   return HAL_OK;
+}
 /**
-  * @brief Stops the DMA Transfer.
+  * @brief  Stops the DMA Transfer.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL status
   */
 HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart)
+{
   uint32_t dmarequest = 0x00U;
      and the correspond call back is executed HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback()
      */
   /* Stop USART DMA Tx request if ongoing */
   dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT);
-  if((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest)
+  if ((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest)
+  {
     USART_EndTxTransfer(husart);
     /* Abort the USART DMA Tx channel */
-    if(husart->hdmatx != NULL)
+    if (husart->hdmatx != NULL)
+    {
       HAL_DMA_Abort(husart->hdmatx);
+    }
     /* Disable the USART Tx DMA request */
     CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+  }
   /* Stop USART DMA Rx request if ongoing */
   dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);
-  if((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest)
+  if ((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest)
+  {
     USART_EndRxTransfer(husart);
     /* Abort the USART DMA Rx channel */
-    if(husart->hdmarx != NULL)
+    if (husart->hdmarx != NULL)
+    {
       HAL_DMA_Abort(husart->hdmarx);
+    }
     /* Disable the USART Rx DMA request */
   /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
   CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
   CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
   /* Disable the USART DMA Tx request if enabled */
-  if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
+  if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
+  {
     CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
     /* Abort the USART DMA Tx channel : use blocking DMA Abort API (no callback) */
-    if(husart->hdmatx != NULL)
+    if (husart->hdmatx != NULL)
+    {
       /* Set the USART DMA Abort callback to Null.
          No call back execution at end of DMA abort procedure */
       husart->hdmatx->XferAbortCallback = NULL;
       HAL_DMA_Abort(husart->hdmatx);
+    }
+  }
   /* Disable the USART DMA Rx request if enabled */
-  if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
+  if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
+  {
     CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
     /* Abort the USART DMA Rx channel : use blocking DMA Abort API (no callback) */
-    if(husart->hdmarx != NULL)
+    if (husart->hdmarx != NULL)
+    {
       /* Set the USART DMA Abort callback to Null.
          No call back execution at end of DMA abort procedure */
       husart->hdmarx->XferAbortCallback = NULL;
       HAL_DMA_Abort(husart->hdmarx);
+    }
+  }
   /* Reset Tx and Rx transfer counters */
   husart->TxXferCount = 0x00U;
   husart->RxXferCount = 0x00U;
   /* Restore husart->State to Ready */
   husart->State  = HAL_USART_STATE_READY;
   /* Reset Handle ErrorCode to No Error */
   * @retval HAL status
 */
 HAL_StatusTypeDef HAL_USART_Abort_IT(USART_HandleTypeDef *husart)
+{
   uint32_t AbortCplt = 0x01U;
   /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
   CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
   CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
   /* If DMA Tx and/or DMA Rx Handles are associated to USART Handle, DMA Abort complete callbacks should be initialised
      before any call to DMA Abort functions */
   /* DMA Tx Handle is valid */
-  if(husart->hdmatx != NULL)
+  if (husart->hdmatx != NULL)
+  {
     /* Set DMA Abort Complete callback if USART DMA Tx request if enabled.
        Otherwise, set it to NULL */
-    if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
+    if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
+    {
       husart->hdmatx->XferAbortCallback = USART_DMATxAbortCallback;
+    }
     else
+    {
       husart->hdmatx->XferAbortCallback = NULL;
+    }
+  }
   /* DMA Rx Handle is valid */
-  if(husart->hdmarx != NULL)
+  if (husart->hdmarx != NULL)
+  {
     /* Set DMA Abort Complete callback if USART DMA Rx request if enabled.
        Otherwise, set it to NULL */
-    if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
+    if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
+    {
       husart->hdmarx->XferAbortCallback = USART_DMARxAbortCallback;
+    }
     else
+    {
       husart->hdmarx->XferAbortCallback = NULL;
+    }
+  }
   /* Disable the USART DMA Tx request if enabled */
-  if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
+  if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT))
+  {
     /* Disable DMA Tx at USART level */
     CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
     /* Abort the USART DMA Tx channel : use non blocking DMA Abort API (callback) */
-    if(husart->hdmatx != NULL)
+    if (husart->hdmatx != NULL)
+    {
       /* USART Tx DMA Abort callback has already been initialised :
          will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */
       /* Abort DMA TX */
-      if(HAL_DMA_Abort_IT(husart->hdmatx) != HAL_OK)
+      if (HAL_DMA_Abort_IT(husart->hdmatx) != HAL_OK)
+      {
         husart->hdmatx->XferAbortCallback = NULL;
+      }
       else
+      {
+      }
+    }
+  }
   /* Disable the USART DMA Rx request if enabled */
-  if(HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
+  if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
+  {
     CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
     /* Abort the USART DMA Rx channel : use non blocking DMA Abort API (callback) */
-    if(husart->hdmarx != NULL)
+    if (husart->hdmarx != NULL)
+    {
       /* USART Rx DMA Abort callback has already been initialised :
          will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */
       /* Abort DMA RX */
-      if(HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
+      if (HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
+      {
         husart->hdmarx->XferAbortCallback = NULL;
         AbortCplt = 0x01U;
+      }
       else
+      }
+    }
+  }
   /* if no DMA abort complete callback execution is required => call user Abort Complete callback */
-  if(AbortCplt  == 0x01U)
+  if (AbortCplt  == 0x01U)
+  {
     /* Reset Tx and Rx transfer counters */
     husart->TxXferCount = 0x00U;
     husart->RxXferCount = 0x00U;
     /* Reset errorCode */
     husart->ErrorCode = HAL_USART_ERROR_NONE;
     /* Restore husart->State to Ready */
     husart->State  = HAL_USART_STATE_READY;
     /* As no DMA to be aborted, call directly user Abort complete callback */
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+    /* Call registered Abort Complete Callback */
+    husart->AbortCpltCallback(husart);
+#else
+    /* Call legacy weak Abort Complete Callback */
     HAL_USART_AbortCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+  }
   return HAL_OK;
+}
 /**
   * @brief  This function handles USART interrupt request.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
   *                the configuration information for the specified USART module.
   * @retval None
   */
 void HAL_USART_IRQHandler(USART_HandleTypeDef *husart)
+{
   uint32_t errorflags = 0x00U;
   uint32_t dmarequest = 0x00U;
   /* If no error occurs */
   errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE));
-  if(errorflags == RESET)
+  if (errorflags == RESET)
+  {
     /* USART in mode Receiver -------------------------------------------------*/
-    if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
+    if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
+    {
-      if(husart->State == HAL_USART_STATE_BUSY_RX)
+      if (husart->State == HAL_USART_STATE_BUSY_RX)
+      {
         USART_Receive_IT(husart);
+      }
       else
+      {
+      }
       return;
+    }
+  }
   /* If some errors occur */
-  if((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)))
+  if ((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)))
+  {
     /* USART parity error interrupt occurred ----------------------------------*/
-    if(((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
+    if (((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
+    {
       husart->ErrorCode |= HAL_USART_ERROR_PE;
+    }
     /* USART noise error interrupt occurred --------------------------------*/
-    if(((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+    if (((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+    {
       husart->ErrorCode |= HAL_USART_ERROR_NE;
+    }
     /* USART frame error interrupt occurred --------------------------------*/
-    if(((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+    if (((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+    {
       husart->ErrorCode |= HAL_USART_ERROR_FE;
+    }
     /* USART Over-Run interrupt occurred -----------------------------------*/
-    if(((isrflags & USART_SR_ORE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
+    if (((isrflags & USART_SR_ORE) != RESET) && (((cr1its & USART_CR1_RXNEIE) != RESET) || ((cr3its & USART_CR3_EIE) != RESET)))
+    {
       husart->ErrorCode |= HAL_USART_ERROR_ORE;
+    }
-    if(husart->ErrorCode != HAL_USART_ERROR_NONE)
+    if (husart->ErrorCode != HAL_USART_ERROR_NONE)
+    {
       /* USART in mode Receiver -----------------------------------------------*/
-      if(((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
+      if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
+      {
-        if(husart->State == HAL_USART_STATE_BUSY_RX)
+        if (husart->State == HAL_USART_STATE_BUSY_RX)
+        {
           USART_Receive_IT(husart);
+        }
         else
+        {
+        }
+      }
       /* If Overrun error occurs, or if any error occurs in DMA mode reception,
       consider error as blocking */
       dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);
-      if(((husart->ErrorCode & HAL_USART_ERROR_ORE) != RESET) || dmarequest)
+      if (((husart->ErrorCode & HAL_USART_ERROR_ORE) != RESET) || dmarequest)
+      {
         /* Set the USART state ready to be able to start again the process,
         Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
         USART_EndRxTransfer(husart);
         if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR))
+        {
           CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
           /* Abort the USART DMA Rx channel */
-          if(husart->hdmarx != NULL)
+          if (husart->hdmarx != NULL)
+          {
             /* Set the USART DMA Abort callback :
             will lead to call HAL_USART_ErrorCallback() at end of DMA abort procedure */
             husart->hdmarx->XferAbortCallback = USART_DMAAbortOnError;
-            if(HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
+            if (HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK)
+            {
               /* Call Directly XferAbortCallback function in case of error */
               husart->hdmarx->XferAbortCallback(husart->hdmarx);
+            }
+          }
           else
+          {
             /* Call user error callback */
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+            /* Call registered Error Callback */
+            husart->ErrorCallback(husart);
+#else
+            /* Call legacy weak Error Callback */
             HAL_USART_ErrorCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+          }
+        }
         else
+        {
           /* Call user error callback */
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+          /* Call registered Error Callback */
+          husart->ErrorCallback(husart);
+#else
+          /* Call legacy weak Error Callback */
           HAL_USART_ErrorCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+        }
+      }
       else
+      {
         /* Call user error callback */
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+        /* Call registered Error Callback */
+        husart->ErrorCallback(husart);
+#else
+        /* Call legacy weak Error Callback */
         HAL_USART_ErrorCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
         husart->ErrorCode = HAL_USART_ERROR_NONE;
+      }
+    }
     return;
+  }
   /* USART in mode Transmitter -----------------------------------------------*/
-  if(((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
+  if (((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
+  {
-    if(husart->State == HAL_USART_STATE_BUSY_TX)
+    if (husart->State == HAL_USART_STATE_BUSY_TX)
+    {
       USART_Transmit_IT(husart);
+    }
     else
+    {
+    }
     return;
+  }
   /* USART in mode Transmitter (transmission end) ----------------------------*/
-  if(((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
+  if (((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
+  {
     USART_EndTransmit_IT(husart);
     return;
+  }
+}
 /**
   * @brief  Tx Transfer completed callbacks.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 __weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
    */
+}
 /**
   * @brief  Tx Half Transfer completed callbacks.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 __weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
    */
+}
 /**
   * @brief  Rx Transfer completed callbacks.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 __weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
    */
+}
 /**
   * @brief  Rx Half Transfer completed callbacks.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 __weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
    */
+}
 /**
   * @brief  Tx/Rx Transfers completed callback for the non-blocking process.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 __weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
    */
+}
 /**
   * @brief  USART error callbacks.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 __weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
 /**
   * @brief  USART Abort Complete callback.
   * @param  husart USART handle.
   * @retval None
   */
-__weak void HAL_USART_AbortCpltCallback (USART_HandleTypeDef *husart)
+__weak void HAL_USART_AbortCpltCallback(USART_HandleTypeDef *husart)
+{
   /* Prevent unused argument(s) compilation warning */
   UNUSED(husart);
   /* NOTE : This function should not be modified, when the callback is needed,
   * @{
   */
 /**
   * @brief  Returns the USART state.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL state
   */
 HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart)
+{
   return husart->State;
+}
 /**
   * @brief  Return the USART error code
-  * @param  husart : pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *              the configuration information for the specified USART.
+  *                the configuration information for the specified USART.
   * @retval USART Error Code
   */
 uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart)
+{
   return husart->ErrorCode;
 /**
   * @}
   */
+/** @defgroup USART_Private_Functions USART Private Functions
+ * @{
+ */
 /**
+  * @brief  Initialize the callbacks to their default values.
+  * @param  husart USART handle.
-  * @}
+  * @retval none
   */
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+void USART_InitCallbacksToDefault(USART_HandleTypeDef *husart)
+{
+  /* Init the USART Callback settings */
+  husart->TxHalfCpltCallback        = HAL_USART_TxHalfCpltCallback;        /* Legacy weak TxHalfCpltCallback        */
+  husart->TxCpltCallback            = HAL_USART_TxCpltCallback;            /* Legacy weak TxCpltCallback            */
+  husart->RxHalfCpltCallback        = HAL_USART_RxHalfCpltCallback;        /* Legacy weak RxHalfCpltCallback        */
+  husart->RxCpltCallback            = HAL_USART_RxCpltCallback;            /* Legacy weak RxCpltCallback            */
+  husart->TxRxCpltCallback          = HAL_USART_TxRxCpltCallback;          /* Legacy weak TxRxCpltCallback          */
+  husart->ErrorCallback             = HAL_USART_ErrorCallback;             /* Legacy weak ErrorCallback             */
+  husart->AbortCpltCallback         = HAL_USART_AbortCpltCallback;         /* Legacy weak AbortCpltCallback         */
+}
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
-/** @defgroup USART_Private_Functions   USART Private Functions
-  *  @brief   USART Private functions
-  * @{
-  */
 /**
   * @brief  DMA USART transmit process complete callback.
-  * @param  hdma: DMA handle
-  * @param  hdma: Pointer to a DMA_HandleTypeDef structure that contains
+  * @param  hdma Pointer to a DMA_HandleTypeDef structure that contains
-  *               the configuration information for the specified DMA module.
+  *              the configuration information for the specified DMA module.
   * @retval None
   */
 static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
+{
-  USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+  USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
   /* DMA Normal mode */
-  if(HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC))
+  if ((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U)
+  {
     husart->TxXferCount = 0U;
-    if(husart->State == HAL_USART_STATE_BUSY_TX)
+    if (husart->State == HAL_USART_STATE_BUSY_TX)
+    {
       /* Disable the DMA transfer for transmit request by resetting the DMAT bit
          in the USART CR3 register */
       CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
       /* Enable the USART Transmit Complete Interrupt */
-      __HAL_USART_ENABLE_IT(husart, USART_IT_TC);
+      SET_BIT(husart->Instance->CR1, USART_CR1_TCIE);
+    }
+  }
   /* DMA Circular mode */
   else
+  {
-    if(husart->State == HAL_USART_STATE_BUSY_TX)
+    if (husart->State == HAL_USART_STATE_BUSY_TX)
+    {
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+      /* Call registered Tx Complete Callback */
+      husart->TxCpltCallback(husart);
+#else
+      /* Call legacy weak Tx Complete Callback */
       HAL_USART_TxCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+    }
+  }
+}
 /**
-  * @brief DMA USART transmit process half complete callback
+  * @brief  DMA USART transmit process half complete callback
-  * @param  hdma: pointer to a DMA_HandleTypeDef structure that contains
+  * @param  hdma Pointer to a DMA_HandleTypeDef structure that contains
-  *               the configuration information for the specified DMA module.
+  *              the configuration information for the specified DMA module.
   * @retval None
   */
 static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
+{
-  USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+  USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+  /* Call registered Tx Half Complete Callback */
+  husart->TxHalfCpltCallback(husart);
+#else
+  /* Call legacy weak Tx Half Complete Callback */
   HAL_USART_TxHalfCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+}
 /**
   * @brief  DMA USART receive process complete callback.
-  * @param  hdma: DMA handle
+  * @param  hdma Pointer to a DMA_HandleTypeDef structure that contains
+  *              the configuration information for the specified DMA module.
   * @retval None
   */
 static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
+{
-  USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+  USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
   /* DMA Normal mode */
-  if(HAL_IS_BIT_CLR(hdma->Instance->CCR, DMA_CCR_CIRC))
+  if ((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U)
+  {
     husart->RxXferCount = 0x00U;
     /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
     CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
     CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
-    if(husart->State == HAL_USART_STATE_BUSY_RX)
-    {
-      /* Disable the DMA transfer for the Transmit/Receiver requests by setting the DMAT/DMAR bit
+    /* Disable the DMA transfer for the Transmit/receiver request by clearing the DMAT/DMAR bit
          in the USART CR3 register */
-      CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
+    CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR);
+    CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT);
+    /* The USART state is HAL_USART_STATE_BUSY_RX */
-      husart->State= HAL_USART_STATE_READY;
+    if (husart->State == HAL_USART_STATE_BUSY_RX)
+    {
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+      /* Call registered Rx Complete Callback */
+      husart->RxCpltCallback(husart);
+#else
+      /* Call legacy weak Rx Complete Callback */
       HAL_USART_RxCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+    }
     /* The USART state is HAL_USART_STATE_BUSY_TX_RX */
     else
+    {
-      /* Disable the DMA transfer for the Transmit/receiver requests by setting the DMAT/DMAR bit
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
-         in the USART CR3 register */
+      /* Call registered Tx Rx Complete Callback */
-      CLEAR_BIT(husart->Instance->CR3, (USART_CR3_DMAT | USART_CR3_DMAR));
+      husart->TxRxCpltCallback(husart);
+#else
-      husart->State= HAL_USART_STATE_READY;
+      /* Call legacy weak Tx Rx Complete Callback */
       HAL_USART_TxRxCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+    }
+    husart->State = HAL_USART_STATE_READY;
+  }
   /* DMA circular mode */
   else
+  {
-    if(husart->State == HAL_USART_STATE_BUSY_RX)
+    if (husart->State == HAL_USART_STATE_BUSY_RX)
+    {
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+      /* Call registered Rx Complete Callback */
+      husart->RxCpltCallback(husart);
+#else
+      /* Call legacy weak Rx Complete Callback */
       HAL_USART_RxCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+    }
     /* The USART state is HAL_USART_STATE_BUSY_TX_RX */
     else
+    {
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+      /* Call registered Tx Rx Complete Callback */
+      husart->TxRxCpltCallback(husart);
+#else
+      /* Call legacy weak Tx Rx Complete Callback */
       HAL_USART_TxRxCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+    }
+  }
+}
 /**
-  * @brief DMA USART receive process half complete callback
+  * @brief  DMA USART receive process half complete callback
-  * @param  hdma: pointer to a DMA_HandleTypeDef structure that contains
+  * @param  hdma Pointer to a DMA_HandleTypeDef structure that contains
-  *               the configuration information for the specified DMA module.
+  *              the configuration information for the specified DMA module.
   * @retval None
   */
 static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
+{
-  USART_HandleTypeDef* husart = (USART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
+  USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+  /* Call registered Rx Half Complete Callback */
+  husart->RxHalfCpltCallback(husart);
+#else
+  /* Call legacy weak Rx Half Complete Callback */
   HAL_USART_RxHalfCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+}
 /**
   * @brief  DMA USART communication error callback.
-  * @param  hdma: DMA handle
+  * @param  hdma Pointer to a DMA_HandleTypeDef structure that contains
+  *              the configuration information for the specified DMA module.
   * @retval None
   */
 static void USART_DMAError(DMA_HandleTypeDef *hdma)
+{
   uint32_t dmarequest = 0x00U;
-  USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+  USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
   husart->RxXferCount = 0x00U;
   husart->TxXferCount = 0x00U;
   /* Stop USART DMA Tx request if ongoing */
   dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT);
-  if((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest)
+  if ((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest)
+  {
     USART_EndTxTransfer(husart);
+  }
   /* Stop USART DMA Rx request if ongoing */
   dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR);
-  if((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest)
+  if ((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest)
+  {
     USART_EndRxTransfer(husart);
+  }
   husart->ErrorCode |= HAL_USART_ERROR_DMA;
-  husart->State= HAL_USART_STATE_READY;
+  husart->State = HAL_USART_STATE_READY;
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+  /* Call registered Error Callback */
+  husart->ErrorCallback(husart);
+#else
+  /* Call legacy weak Error Callback */
   HAL_USART_ErrorCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+}
 /**
   * @brief  This function handles USART Communication Timeout.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
-  * @param  Flag: specifies the USART flag to check.
+  * @param  Flag specifies the USART flag to check.
-  * @param  Status: The new Flag status (SET or RESET).
+  * @param  Status The new Flag status (SET or RESET).
-  * @param  Tickstart: Tick start value.
+  * @param  Tickstart Tick start value.
-  * @param  Timeout: Timeout duration.
+  * @param  Timeout Timeout duration.
   * @retval HAL status
   */
 static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, uint32_t Tickstart, uint32_t Timeout)
+{
   /* Wait until flag is set */
-  while((__HAL_USART_GET_FLAG(husart, Flag) ? SET : RESET) == Status)
+  while ((__HAL_USART_GET_FLAG(husart, Flag) ? SET : RESET) == Status)
+  {
     /* Check for the Timeout */
-    if(Timeout != HAL_MAX_DELAY)
+    if (Timeout != HAL_MAX_DELAY)
+    {
-      if((Timeout == 0U)||((HAL_GetTick() - Tickstart ) > Timeout))
+      if ((Timeout == 0U) || ((HAL_GetTick() - Tickstart) > Timeout))
+      {
-          /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
-          __HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
+        /* Disable the USART Transmit Complete Interrupt */
-          __HAL_USART_DISABLE_IT(husart, USART_IT_RXNE);
+        CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
-          __HAL_USART_DISABLE_IT(husart, USART_IT_PE);
+        /* Disable the USART RXNE Interrupt */
-          __HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
+        CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);
+        /* Disable the USART Parity Error Interrupt */
+        CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE);
+        /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
+        CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
-        husart->State= HAL_USART_STATE_READY;
+        husart->State = HAL_USART_STATE_READY;
         /* Process Unlocked */
         __HAL_UNLOCK(husart);
         return HAL_TIMEOUT;
   return HAL_OK;
+}
 /**
   * @brief  End ongoing Tx transfer on USART peripheral (following error detection or Transmit completion).
-  * @param  husart: USART handle.
+  * @param  husart USART handle.
   * @retval None
   */
 static void USART_EndTxTransfer(USART_HandleTypeDef *husart)
+{
   /* Disable TXEIE and TCIE interrupts */
   husart->State = HAL_USART_STATE_READY;
+}
 /**
   * @brief  End ongoing Rx transfer on USART peripheral (following error detection or Reception completion).
-  * @param  husart: USART handle.
+  * @param  husart USART handle.
   * @retval None
   */
 static void USART_EndRxTransfer(USART_HandleTypeDef *husart)
+{
   /* Disable RXNE, PE and ERR interrupts */
   * @param  hdma DMA handle.
   * @retval None
   */
 static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
+{
-  USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+  USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
   husart->RxXferCount = 0x00U;
   husart->TxXferCount = 0x00U;
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+  /* Call registered Error Callback */
+  husart->ErrorCallback(husart);
+#else
+  /* Call legacy weak Error Callback */
   HAL_USART_ErrorCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+}
 /**
   * @brief  DMA USART Tx communication abort callback, when initiated by user
   *         (To be called at end of DMA Tx Abort procedure following user abort request).
   * @param  hdma DMA handle.
   * @retval None
   */
 static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
+{
-  USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+  USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
   husart->hdmatx->XferAbortCallback = NULL;
   /* Check if an Abort process is still ongoing */
-  if(husart->hdmarx != NULL)
+  if (husart->hdmarx != NULL)
+  {
-    if(husart->hdmarx->XferAbortCallback != NULL)
+    if (husart->hdmarx->XferAbortCallback != NULL)
+    {
       return;
+    }
+  }
   /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
   husart->TxXferCount = 0x00U;
   husart->RxXferCount = 0x00U;
   /* Reset errorCode */
   /* Restore husart->State to Ready */
   husart->State  = HAL_USART_STATE_READY;
   /* Call user Abort complete callback */
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+  /* Call registered Abort Complete Callback */
+  husart->AbortCpltCallback(husart);
+#else
+  /* Call legacy weak Abort Complete Callback */
   HAL_USART_AbortCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+}
 /**
   * @brief  DMA USART Rx communication abort callback, when initiated by user
   *         (To be called at end of DMA Rx Abort procedure following user abort request).
   * @param  hdma DMA handle.
   * @retval None
   */
 static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
+{
-  USART_HandleTypeDef* husart = ( USART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
+  USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
   husart->hdmarx->XferAbortCallback = NULL;
   /* Check if an Abort process is still ongoing */
-  if(husart->hdmatx != NULL)
+  if (husart->hdmatx != NULL)
+  {
-    if(husart->hdmatx->XferAbortCallback != NULL)
+    if (husart->hdmatx->XferAbortCallback != NULL)
+    {
       return;
+    }
+  }
   /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
   husart->TxXferCount = 0x00U;
   husart->RxXferCount = 0x00U;
   /* Reset errorCode */
   /* Restore husart->State to Ready */
   husart->State  = HAL_USART_STATE_READY;
   /* Call user Abort complete callback */
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+  /* Call registered Abort Complete Callback */
+  husart->AbortCpltCallback(husart);
+#else
+  /* Call legacy weak Abort Complete Callback */
   HAL_USART_AbortCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
+}
 /**
   * @brief  Simplex Send an amount of data in non-blocking mode.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL status
   * @note   The USART errors are not managed to avoid the overrun error.
   */
 static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart)
+{
-  uint16_t* tmp;
+  uint16_t *tmp;
-  if(husart->State == HAL_USART_STATE_BUSY_TX)
+  if (husart->State == HAL_USART_STATE_BUSY_TX)
   {
-    if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+    if (husart->Init.WordLength == USART_WORDLENGTH_9B)
     {
-      tmp = (uint16_t*) husart->pTxBuffPtr;
+      tmp = (uint16_t *) husart->pTxBuffPtr;
-      WRITE_REG(husart->Instance->DR, (uint16_t)(*tmp & (uint16_t)0x01FF));
+      husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
-      if(husart->Init.Parity == USART_PARITY_NONE)
+      if (husart->Init.Parity == USART_PARITY_NONE)
+      {
         husart->pTxBuffPtr += 2U;
+      }
       else
+      {
         husart->pTxBuffPtr += 1U;
+      }
+    }
     else
+    {
-      WRITE_REG(husart->Instance->DR, (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF));
+      husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF);
+    }
-    if(--husart->TxXferCount == 0U)
+    if (--husart->TxXferCount == 0U)
+    {
       /* Disable the USART Transmit data register empty Interrupt */
-      __HAL_USART_DISABLE_IT(husart, USART_IT_TXE);
+      CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
       /* Enable the USART Transmit Complete Interrupt */
-      __HAL_USART_ENABLE_IT(husart, USART_IT_TC);
+      SET_BIT(husart->Instance->CR1, USART_CR1_TCIE);
+    }
     return HAL_OK;
+  }
   else
+  {
+  }
+}
 /**
   * @brief  Wraps up transmission in non blocking mode.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
   *                the configuration information for the specified USART module.
   * @retval HAL status
   */
 static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart)
+{
   /* Disable the USART Transmit Complete Interrupt */
-  __HAL_USART_DISABLE_IT(husart, USART_IT_TC);
+  CLEAR_BIT(husart->Instance->CR1, USART_CR1_TCIE);
   /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
-  __HAL_USART_DISABLE_IT(husart, USART_IT_ERR);
+  CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
   husart->State = HAL_USART_STATE_READY;
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+  /* Call registered Tx Complete Callback */
+  husart->TxCpltCallback(husart);
+#else
+  /* Call legacy weak Tx Complete Callback */
   HAL_USART_TxCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
   return HAL_OK;
+}
 /**
   * @brief  Simplex Receive an amount of data in non-blocking mode.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL status
   */
 static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart)
+{
-  uint16_t* tmp;
+  uint16_t *tmp;
-  if(husart->State == HAL_USART_STATE_BUSY_RX)
+  if (husart->State == HAL_USART_STATE_BUSY_RX)
+  {
-    if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+    if (husart->Init.WordLength == USART_WORDLENGTH_9B)
+    {
-      tmp = (uint16_t*) husart->pRxBuffPtr;
+      tmp = (uint16_t *) husart->pRxBuffPtr;
-      if(husart->Init.Parity == USART_PARITY_NONE)
+      if (husart->Init.Parity == USART_PARITY_NONE)
+      {
         *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);
         husart->pRxBuffPtr += 2U;
+      }
       else
+      {
         *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x00FF);
         husart->pRxBuffPtr += 1U;
+      }
-      if(--husart->RxXferCount != 0x00U)
+      if (--husart->RxXferCount != 0x00U)
+      {
         /* Send dummy byte in order to generate the clock for the slave to send the next data */
-        WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x01FF));
+        husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF);
+      }
+    }
     else
+    {
-      if(husart->Init.Parity == USART_PARITY_NONE)
+      if (husart->Init.Parity == USART_PARITY_NONE)
+      {
         *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);
+      }
       else
+      {
         *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F);
+      }
-      if(--husart->RxXferCount != 0x00U)
+      if (--husart->RxXferCount != 0x00U)
+      {
         /* Send dummy byte in order to generate the clock for the slave to send the next data */
-        WRITE_REG(husart->Instance->DR, (DUMMY_DATA & (uint16_t)0x00FF));
+        husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x00FF);
+      }
+    }
-    if(husart->RxXferCount == 0U)
+    if (husart->RxXferCount == 0U)
+    {
       /* Disable the USART RXNE Interrupt */
       CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);
       /* Disable the USART Parity Error Interrupt */
       /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
       CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
       husart->State = HAL_USART_STATE_READY;
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+      /* Call registered Rx Complete Callback */
+      husart->RxCpltCallback(husart);
+#else
+      /* Call legacy weak Rx Complete Callback */
       HAL_USART_RxCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
       return HAL_OK;
+    }
     return HAL_OK;
+  }
+  }
+}
 /**
   * @brief  Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking).
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval HAL status
   */
 static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart)
+{
-  uint16_t* tmp;
+  uint16_t *tmp;
-  if(husart->State == HAL_USART_STATE_BUSY_TX_RX)
+  if (husart->State == HAL_USART_STATE_BUSY_TX_RX)
+  {
-    if(husart->TxXferCount != 0x00U)
+    if (husart->TxXferCount != 0x00U)
+    {
-      if(__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET)
+      if (__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET)
+      {
-        if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+        if (husart->Init.WordLength == USART_WORDLENGTH_9B)
+        {
-          tmp = (uint16_t*) husart->pTxBuffPtr;
+          tmp = (uint16_t *) husart->pTxBuffPtr;
-          WRITE_REG(husart->Instance->DR, (uint16_t)(*tmp & (uint16_t)0x01FF));
+          husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
-          if(husart->Init.Parity == USART_PARITY_NONE)
+          if (husart->Init.Parity == USART_PARITY_NONE)
+          {
             husart->pTxBuffPtr += 2U;
+          }
           else
+          {
             husart->pTxBuffPtr += 1U;
+          }
+        }
         else
+        {
-          WRITE_REG(husart->Instance->DR, (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF));
+          husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF);
+        }
         husart->TxXferCount--;
         /* Check the latest data transmitted */
-        if(husart->TxXferCount == 0U)
+        if (husart->TxXferCount == 0U)
+        {
           CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE);
+        }
+      }
+    }
-    if(husart->RxXferCount != 0x00U)
+    if (husart->RxXferCount != 0x00U)
+    {
-      if(__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET)
+      if (__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET)
+      {
-        if(husart->Init.WordLength == USART_WORDLENGTH_9B)
+        if (husart->Init.WordLength == USART_WORDLENGTH_9B)
+        {
-          tmp = (uint16_t*) husart->pRxBuffPtr;
+          tmp = (uint16_t *) husart->pRxBuffPtr;
-          if(husart->Init.Parity == USART_PARITY_NONE)
+          if (husart->Init.Parity == USART_PARITY_NONE)
+          {
             *tmp = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF);
             husart->pRxBuffPtr += 2U;
+          }
           else
             husart->pRxBuffPtr += 1U;
+          }
+        }
         else
+        {
-          if(husart->Init.Parity == USART_PARITY_NONE)
+          if (husart->Init.Parity == USART_PARITY_NONE)
+          {
             *husart->pRxBuffPtr++ = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF);
+          }
           else
+          {
         husart->RxXferCount--;
+      }
+    }
     /* Check the latest data received */
-    if(husart->RxXferCount == 0U)
+    if (husart->RxXferCount == 0U)
+    {
       /* Disable the USART RXNE Interrupt */
       CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE);
       /* Disable the USART Parity Error Interrupt */
       /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */
       CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE);
       husart->State = HAL_USART_STATE_READY;
+#if (USE_HAL_USART_REGISTER_CALLBACKS == 1)
+      /* Call registered Tx Rx Complete Callback */
+      husart->TxRxCpltCallback(husart);
+#else
+      /* Call legacy weak Tx Rx Complete Callback */
       HAL_USART_TxRxCpltCallback(husart);
+#endif /* USE_HAL_USART_REGISTER_CALLBACKS */
       return HAL_OK;
+    }
     return HAL_OK;
     return HAL_BUSY;
+  }
+}
 /**
-  * @brief  Configures the USART pferipheral.
+  * @brief  Configures the USART peripheral.
-  * @param  husart: pointer to a USART_HandleTypeDef structure that contains
+  * @param  husart Pointer to a USART_HandleTypeDef structure that contains
-  *                 the configuration information for the specified USART module.
+  *                the configuration information for the specified USART module.
   * @retval None
   */
 static void USART_SetConfig(USART_HandleTypeDef *husart)
+{
+  uint32_t tmpreg = 0x00U;
+  uint32_t pclk;
   /* Check the parameters */
+  assert_param(IS_USART_INSTANCE(husart->Instance));
   assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity));
   assert_param(IS_USART_PHASE(husart->Init.CLKPhase));
   assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit));
   assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate));
   assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength));
   assert_param(IS_USART_STOPBITS(husart->Init.StopBits));
   assert_param(IS_USART_PARITY(husart->Init.Parity));
   assert_param(IS_USART_MODE(husart->Init.Mode));
   /* The LBCL, CPOL and CPHA bits have to be selected when both the transmitter and the
      receiver are disabled (TE=RE=0) to ensure that the clock pulses function correctly. */
-  CLEAR_BIT(husart->Instance->CR1, ((uint32_t)(USART_CR1_TE | USART_CR1_RE)));
+  CLEAR_BIT(husart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
   /*---------------------------- USART CR2 Configuration ---------------------*/
+  tmpreg = husart->Instance->CR2;
+  /* Clear CLKEN, CPOL, CPHA and LBCL bits */
+  tmpreg &= (uint32_t)~((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP));
   /* Configure the USART Clock, CPOL, CPHA and LastBit -----------------------*/
   /* Set CPOL bit according to husart->Init.CLKPolarity value */
   /* Set CPHA bit according to husart->Init.CLKPhase value */
   /* Set LBCL bit according to husart->Init.CLKLastBit value */
   /* Set Stop Bits: Set STOP[13:12] bits according to husart->Init.StopBits value */
+  tmpreg |= (uint32_t)(USART_CLOCK_ENABLE | husart->Init.CLKPolarity |
+                       husart->Init.CLKPhase | husart->Init.CLKLastBit | husart->Init.StopBits);
   /* Write to USART CR2 */
-  MODIFY_REG(husart->Instance->CR2,
+  WRITE_REG(husart->Instance->CR2, (uint32_t)tmpreg);
-             (uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP),
-             ((uint32_t)(USART_CLOCK_ENABLE| husart->Init.CLKPolarity | husart->Init.CLKPhase| husart->Init.CLKLastBit | husart->Init.StopBits)));
   /*-------------------------- USART CR1 Configuration -----------------------*/
+  tmpreg = husart->Instance->CR1;
+  /* Clear M, PCE, PS, TE and RE bits */
+  tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE));
   /* Configure the USART Word Length, Parity and mode:
      Set the M bits according to husart->Init.WordLength value
      Set PCE and PS bits according to husart->Init.Parity value
-     Set TE and RE bits according to husart->Init.Mode value */
+     Set TE and RE bits according to husart->Init.Mode value
-  MODIFY_REG(husart->Instance->CR1,
+   */
-             (uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE),
-             (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode);
+  tmpreg |= (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode;
+  /* Write to USART CR1 */
+  WRITE_REG(husart->Instance->CR1, (uint32_t)tmpreg);
   /*-------------------------- USART CR3 Configuration -----------------------*/
   /* Clear CTSE and RTSE bits */
-  CLEAR_BIT(husart->Instance->CR3, (uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE));
+  CLEAR_BIT(husart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE));
   /*-------------------------- USART BRR Configuration -----------------------*/
   if((husart->Instance == USART1))
+  {
+    pclk = HAL_RCC_GetPCLK2Freq();
-    husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK2Freq(), husart->Init.BaudRate);
+    husart->Instance->BRR = USART_BRR(pclk, husart->Init.BaudRate);
+  }
   else
+  {
+    pclk = HAL_RCC_GetPCLK1Freq();
-    husart->Instance->BRR = USART_BRR(HAL_RCC_GetPCLK1Freq(), husart->Init.BaudRate);
+    husart->Instance->BRR = USART_BRR(pclk, husart->Init.BaudRate);
+  }
+}
 /**
   * @}
   */
+/**
+  * @}
+  */
 #endif /* HAL_USART_MODULE_ENABLED */
 /**
   * @}
   */

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(root)/trunk/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_usart.c – Rev 2 → 9