stm32f4xx_hal_uart.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
 
#ifdef HAL_UART_MODULE_ENABLED
 
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
static void UART_EndTxTransfer(UART_HandleTypeDef *huart);
static void UART_EndRxTransfer(UART_HandleTypeDef *huart);
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
static void UART_DMAError(DMA_HandleTypeDef *hdma);
static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma);
static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma);
static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma);
static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma);
static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart);
static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status,
                                                     uint32_t Tickstart, uint32_t Timeout);
static void UART_SetConfig(UART_HandleTypeDef *huart);
 
/* Exported functions ---------------------------------------------------------*/
HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
{
  /* Check the UART handle allocation */
  if (huart == NULL)
  {
    return HAL_ERROR;
  }
 
  /* Check the parameters */
  if (huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
  {
    /* The hardware flow control is available only for USART1, USART2, USART3 and USART6.
       Except for STM32F446xx devices, that is available for USART1, USART2, USART3, USART6, UART4 and UART5.
    */
    assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
    assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
  }
  else
  {
    assert_param(IS_UART_INSTANCE(huart->Instance));
  }
  assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
  assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
 
  if (huart->gState == HAL_UART_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    huart->Lock = HAL_UNLOCKED;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    UART_InitCallbacksToDefault(huart);
 
    if (huart->MspInitCallback == NULL)
    {
      huart->MspInitCallback = HAL_UART_MspInit;
    }
 
    /* Init the low level hardware */
    huart->MspInitCallback(huart);
#else
    /* Init the low level hardware : GPIO, CLOCK */
    HAL_UART_MspInit(huart);
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
  }
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Disable the peripheral */
  __HAL_UART_DISABLE(huart);
 
  /* Set the UART Communication parameters */
  UART_SetConfig(huart);
 
  /* In asynchronous mode, the following bits must be kept cleared:
     - LINEN and CLKEN bits in the USART_CR2 register,
     - SCEN, HDSEL and IREN  bits in the USART_CR3 register.*/
  CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
  CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
 
  /* Enable the peripheral */
  __HAL_UART_ENABLE(huart);
 
  /* Initialize the UART state */
  huart->ErrorCode = HAL_UART_ERROR_NONE;
  huart->gState = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
  huart->RxEventType = HAL_UART_RXEVENT_TC;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
{
  /* Check the UART handle allocation */
  if (huart == NULL)
  {
    return HAL_ERROR;
  }
 
  /* Check the parameters */
  assert_param(IS_UART_HALFDUPLEX_INSTANCE(huart->Instance));
  assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
  assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
 
  if (huart->gState == HAL_UART_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    huart->Lock = HAL_UNLOCKED;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    UART_InitCallbacksToDefault(huart);
 
    if (huart->MspInitCallback == NULL)
    {
      huart->MspInitCallback = HAL_UART_MspInit;
    }
 
    /* Init the low level hardware */
    huart->MspInitCallback(huart);
#else
    /* Init the low level hardware : GPIO, CLOCK */
    HAL_UART_MspInit(huart);
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
  }
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Disable the peripheral */
  __HAL_UART_DISABLE(huart);
 
  /* Set the UART Communication parameters */
  UART_SetConfig(huart);
 
  /* In half-duplex mode, the following bits must be kept cleared:
     - LINEN and CLKEN bits in the USART_CR2 register,
     - SCEN and IREN bits in the USART_CR3 register.*/
  CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
  CLEAR_BIT(huart->Instance->CR3, (USART_CR3_IREN | USART_CR3_SCEN));
 
  /* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
  SET_BIT(huart->Instance->CR3, USART_CR3_HDSEL);
 
  /* Enable the peripheral */
  __HAL_UART_ENABLE(huart);
 
  /* Initialize the UART state*/
  huart->ErrorCode = HAL_UART_ERROR_NONE;
  huart->gState = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
  huart->RxEventType = HAL_UART_RXEVENT_TC;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
{
  /* Check the UART handle allocation */
  if (huart == NULL)
  {
    return HAL_ERROR;
  }
 
  /* Check the LIN UART instance */
  assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
 
  /* Check the Break detection length parameter */
  assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
  assert_param(IS_UART_LIN_WORD_LENGTH(huart->Init.WordLength));
  assert_param(IS_UART_LIN_OVERSAMPLING(huart->Init.OverSampling));
 
  if (huart->gState == HAL_UART_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    huart->Lock = HAL_UNLOCKED;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    UART_InitCallbacksToDefault(huart);
 
    if (huart->MspInitCallback == NULL)
    {
      huart->MspInitCallback = HAL_UART_MspInit;
    }
 
    /* Init the low level hardware */
    huart->MspInitCallback(huart);
#else
    /* Init the low level hardware : GPIO, CLOCK */
    HAL_UART_MspInit(huart);
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
  }
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Disable the peripheral */
  __HAL_UART_DISABLE(huart);
 
  /* Set the UART Communication parameters */
  UART_SetConfig(huart);
 
  /* In LIN mode, the following bits must be kept cleared:
     - CLKEN bits in the USART_CR2 register,
     - SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
  CLEAR_BIT(huart->Instance->CR2, (USART_CR2_CLKEN));
  CLEAR_BIT(huart->Instance->CR3, (USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN));
 
  /* Enable the LIN mode by setting the LINEN bit in the CR2 register */
  SET_BIT(huart->Instance->CR2, USART_CR2_LINEN);
 
  /* Set the USART LIN Break detection length. */
  CLEAR_BIT(huart->Instance->CR2, USART_CR2_LBDL);
  SET_BIT(huart->Instance->CR2, BreakDetectLength);
 
  /* Enable the peripheral */
  __HAL_UART_ENABLE(huart);
 
  /* Initialize the UART state*/
  huart->ErrorCode = HAL_UART_ERROR_NONE;
  huart->gState = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
  huart->RxEventType = HAL_UART_RXEVENT_TC;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
{
  /* Check the UART handle allocation */
  if (huart == NULL)
  {
    return HAL_ERROR;
  }
 
  /* Check the parameters */
  assert_param(IS_UART_INSTANCE(huart->Instance));
 
  /* Check the Address & wake up method parameters */
  assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
  assert_param(IS_UART_ADDRESS(Address));
  assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
  assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
 
  if (huart->gState == HAL_UART_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    huart->Lock = HAL_UNLOCKED;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    UART_InitCallbacksToDefault(huart);
 
    if (huart->MspInitCallback == NULL)
    {
      huart->MspInitCallback = HAL_UART_MspInit;
    }
 
    /* Init the low level hardware */
    huart->MspInitCallback(huart);
#else
    /* Init the low level hardware : GPIO, CLOCK */
    HAL_UART_MspInit(huart);
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
  }
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Disable the peripheral */
  __HAL_UART_DISABLE(huart);
 
  /* Set the UART Communication parameters */
  UART_SetConfig(huart);
 
  /* In Multi-Processor mode, the following bits must be kept cleared:
     - LINEN and CLKEN bits in the USART_CR2 register,
     - SCEN, HDSEL and IREN  bits in the USART_CR3 register */
  CLEAR_BIT(huart->Instance->CR2, (USART_CR2_LINEN | USART_CR2_CLKEN));
  CLEAR_BIT(huart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN));
 
  /* Set the USART address node */
  CLEAR_BIT(huart->Instance->CR2, USART_CR2_ADD);
  SET_BIT(huart->Instance->CR2, Address);
 
  /* Set the wake up method by setting the WAKE bit in the CR1 register */
  CLEAR_BIT(huart->Instance->CR1, USART_CR1_WAKE);
  SET_BIT(huart->Instance->CR1, WakeUpMethod);
 
  /* Enable the peripheral */
  __HAL_UART_ENABLE(huart);
 
  /* Initialize the UART state */
  huart->ErrorCode = HAL_UART_ERROR_NONE;
  huart->gState = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
  huart->RxEventType = HAL_UART_RXEVENT_TC;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
{
  /* Check the UART handle allocation */
  if (huart == NULL)
  {
    return HAL_ERROR;
  }
 
  /* Check the parameters */
  assert_param(IS_UART_INSTANCE(huart->Instance));
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Disable the Peripheral */
  __HAL_UART_DISABLE(huart);
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  if (huart->MspDeInitCallback == NULL)
  {
    huart->MspDeInitCallback = HAL_UART_MspDeInit;
  }
  /* DeInit the low level hardware */
  huart->MspDeInitCallback(huart);
#else
  /* DeInit the low level hardware */
  HAL_UART_MspDeInit(huart);
#endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */
 
  huart->ErrorCode = HAL_UART_ERROR_NONE;
  huart->gState = HAL_UART_STATE_RESET;
  huart->RxState = HAL_UART_STATE_RESET;
  huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
  huart->RxEventType = HAL_UART_RXEVENT_TC;
 
  /* Process Unlock */
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
__weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  /* NOTE: This function should not be modified, when the callback is needed,
           the HAL_UART_MspInit could be implemented in the user file
   */
}
 
__weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  /* NOTE: This function should not be modified, when the callback is needed,
           the HAL_UART_MspDeInit could be implemented in the user file
   */
}
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
HAL_StatusTypeDef HAL_UART_RegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID,
                                            pUART_CallbackTypeDef pCallback)
{
  HAL_StatusTypeDef status = HAL_OK;
 
  if (pCallback == NULL)
  {
    /* Update the error code */
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    return HAL_ERROR;
  }
 
  if (huart->gState == HAL_UART_STATE_READY)
  {
    switch (CallbackID)
    {
      case HAL_UART_TX_HALFCOMPLETE_CB_ID :
        huart->TxHalfCpltCallback = pCallback;
        break;
 
      case HAL_UART_TX_COMPLETE_CB_ID :
        huart->TxCpltCallback = pCallback;
        break;
 
      case HAL_UART_RX_HALFCOMPLETE_CB_ID :
        huart->RxHalfCpltCallback = pCallback;
        break;
 
      case HAL_UART_RX_COMPLETE_CB_ID :
        huart->RxCpltCallback = pCallback;
        break;
 
      case HAL_UART_ERROR_CB_ID :
        huart->ErrorCallback = pCallback;
        break;
 
      case HAL_UART_ABORT_COMPLETE_CB_ID :
        huart->AbortCpltCallback = pCallback;
        break;
 
      case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
        huart->AbortTransmitCpltCallback = pCallback;
        break;
 
      case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
        huart->AbortReceiveCpltCallback = pCallback;
        break;
 
      case HAL_UART_MSPINIT_CB_ID :
        huart->MspInitCallback = pCallback;
        break;
 
      case HAL_UART_MSPDEINIT_CB_ID :
        huart->MspDeInitCallback = pCallback;
        break;
 
      default :
        /* Update the error code */
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (huart->gState == HAL_UART_STATE_RESET)
  {
    switch (CallbackID)
    {
      case HAL_UART_MSPINIT_CB_ID :
        huart->MspInitCallback = pCallback;
        break;
 
      case HAL_UART_MSPDEINIT_CB_ID :
        huart->MspDeInitCallback = pCallback;
        break;
 
      default :
        /* Update the error code */
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* Update the error code */
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    /* Return error status */
    status =  HAL_ERROR;
  }
 
  return status;
}
 
HAL_StatusTypeDef HAL_UART_UnRegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID)
{
  HAL_StatusTypeDef status = HAL_OK;
 
  if (HAL_UART_STATE_READY == huart->gState)
  {
    switch (CallbackID)
    {
      case HAL_UART_TX_HALFCOMPLETE_CB_ID :
        huart->TxHalfCpltCallback = HAL_UART_TxHalfCpltCallback;               /* Legacy weak  TxHalfCpltCallback       */
        break;
 
      case HAL_UART_TX_COMPLETE_CB_ID :
        huart->TxCpltCallback = HAL_UART_TxCpltCallback;                       /* Legacy weak TxCpltCallback            */
        break;
 
      case HAL_UART_RX_HALFCOMPLETE_CB_ID :
        huart->RxHalfCpltCallback = HAL_UART_RxHalfCpltCallback;               /* Legacy weak RxHalfCpltCallback        */
        break;
 
      case HAL_UART_RX_COMPLETE_CB_ID :
        huart->RxCpltCallback = HAL_UART_RxCpltCallback;                       /* Legacy weak RxCpltCallback            */
        break;
 
      case HAL_UART_ERROR_CB_ID :
        huart->ErrorCallback = HAL_UART_ErrorCallback;                         /* Legacy weak ErrorCallback             */
        break;
 
      case HAL_UART_ABORT_COMPLETE_CB_ID :
        huart->AbortCpltCallback = HAL_UART_AbortCpltCallback;                 /* Legacy weak AbortCpltCallback         */
        break;
 
      case HAL_UART_ABORT_TRANSMIT_COMPLETE_CB_ID :
        huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
        break;
 
      case HAL_UART_ABORT_RECEIVE_COMPLETE_CB_ID :
        huart->AbortReceiveCpltCallback = HAL_UART_AbortReceiveCpltCallback;   /* Legacy weak AbortReceiveCpltCallback  */
        break;
 
      case HAL_UART_MSPINIT_CB_ID :
        huart->MspInitCallback = HAL_UART_MspInit;                             /* Legacy weak MspInitCallback           */
        break;
 
      case HAL_UART_MSPDEINIT_CB_ID :
        huart->MspDeInitCallback = HAL_UART_MspDeInit;                         /* Legacy weak MspDeInitCallback         */
        break;
 
      default :
        /* Update the error code */
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else if (HAL_UART_STATE_RESET == huart->gState)
  {
    switch (CallbackID)
    {
      case HAL_UART_MSPINIT_CB_ID :
        huart->MspInitCallback = HAL_UART_MspInit;
        break;
 
      case HAL_UART_MSPDEINIT_CB_ID :
        huart->MspDeInitCallback = HAL_UART_MspDeInit;
        break;
 
      default :
        /* Update the error code */
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
        /* Return error status */
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    /* Update the error code */
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    /* Return error status */
    status =  HAL_ERROR;
  }
 
  return status;
}
 
HAL_StatusTypeDef HAL_UART_RegisterRxEventCallback(UART_HandleTypeDef *huart, pUART_RxEventCallbackTypeDef pCallback)
{
  HAL_StatusTypeDef status = HAL_OK;
 
  if (pCallback == NULL)
  {
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    return HAL_ERROR;
  }
 
  /* Process locked */
  __HAL_LOCK(huart);
 
  if (huart->gState == HAL_UART_STATE_READY)
  {
    huart->RxEventCallback = pCallback;
  }
  else
  {
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    status =  HAL_ERROR;
  }
 
  /* Release Lock */
  __HAL_UNLOCK(huart);
 
  return status;
}
 
HAL_StatusTypeDef HAL_UART_UnRegisterRxEventCallback(UART_HandleTypeDef *huart)
{
  HAL_StatusTypeDef status = HAL_OK;
 
  /* Process locked */
  __HAL_LOCK(huart);
 
  if (huart->gState == HAL_UART_STATE_READY)
  {
    huart->RxEventCallback = HAL_UARTEx_RxEventCallback; /* Legacy weak UART Rx Event Callback  */
  }
  else
  {
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    status =  HAL_ERROR;
  }
 
  /* Release Lock */
  __HAL_UNLOCK(huart);
  return status;
}
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
 
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
  const uint8_t  *pdata8bits;
  const uint16_t *pdata16bits;
  uint32_t tickstart = 0U;
 
  /* Check that a Tx process is not already ongoing */
  if (huart->gState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return  HAL_ERROR;
    }
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->gState = HAL_UART_STATE_BUSY_TX;
 
    /* Init tickstart for timeout management */
    tickstart = HAL_GetTick();
 
    huart->TxXferSize = Size;
    huart->TxXferCount = Size;
 
    /* In case of 9bits/No Parity transfer, pData needs to be handled as a uint16_t pointer */
    if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
    {
      pdata8bits  = NULL;
      pdata16bits = (const uint16_t *) pData;
    }
    else
    {
      pdata8bits  = pData;
      pdata16bits = NULL;
    }
 
    while (huart->TxXferCount > 0U)
    {
      if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
      {
        huart->gState = HAL_UART_STATE_READY;
 
        return HAL_TIMEOUT;
      }
      if (pdata8bits == NULL)
      {
        huart->Instance->DR = (uint16_t)(*pdata16bits & 0x01FFU);
        pdata16bits++;
      }
      else
      {
        huart->Instance->DR = (uint8_t)(*pdata8bits & 0xFFU);
        pdata8bits++;
      }
      huart->TxXferCount--;
    }
 
    if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
    {
      huart->gState = HAL_UART_STATE_READY;
 
      return HAL_TIMEOUT;
    }
 
    /* At end of Tx process, restore huart->gState to Ready */
    huart->gState = HAL_UART_STATE_READY;
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
  uint8_t  *pdata8bits;
  uint16_t *pdata16bits;
  uint32_t tickstart = 0U;
 
  /* Check that a Rx process is not already ongoing */
  if (huart->RxState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return  HAL_ERROR;
    }
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->RxState = HAL_UART_STATE_BUSY_RX;
    huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
    /* Init tickstart for timeout management */
    tickstart = HAL_GetTick();
 
    huart->RxXferSize = Size;
    huart->RxXferCount = Size;
 
    /* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */
    if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
    {
      pdata8bits  = NULL;
      pdata16bits = (uint16_t *) pData;
    }
    else
    {
      pdata8bits  = pData;
      pdata16bits = NULL;
    }
 
    /* Check the remain data to be received */
    while (huart->RxXferCount > 0U)
    {
      if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
      {
        huart->RxState = HAL_UART_STATE_READY;
 
        return HAL_TIMEOUT;
      }
      if (pdata8bits == NULL)
      {
        *pdata16bits = (uint16_t)(huart->Instance->DR & 0x01FF);
        pdata16bits++;
      }
      else
      {
        if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE)))
        {
          *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
        }
        else
        {
          *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
        }
        pdata8bits++;
      }
      huart->RxXferCount--;
    }
 
    /* At end of Rx process, restore huart->RxState to Ready */
    huart->RxState = HAL_UART_STATE_READY;
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size)
{
  /* Check that a Tx process is not already ongoing */
  if (huart->gState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }
 
    huart->pTxBuffPtr = pData;
    huart->TxXferSize = Size;
    huart->TxXferCount = Size;
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->gState = HAL_UART_STATE_BUSY_TX;
 
    /* Enable the UART Transmit data register empty Interrupt */
    __HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
  /* Check that a Rx process is not already ongoing */
  if (huart->RxState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }
 
    /* Set Reception type to Standard reception */
    huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
    return (UART_Start_Receive_IT(huart, pData, Size));
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, const uint8_t *pData, uint16_t Size)
{
  const uint32_t *tmp;
 
  /* Check that a Tx process is not already ongoing */
  if (huart->gState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }
 
    huart->pTxBuffPtr = pData;
    huart->TxXferSize = Size;
    huart->TxXferCount = Size;
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->gState = HAL_UART_STATE_BUSY_TX;
 
    /* Set the UART DMA transfer complete callback */
    huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
 
    /* Set the UART DMA Half transfer complete callback */
    huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
 
    /* Set the DMA error callback */
    huart->hdmatx->XferErrorCallback = UART_DMAError;
 
    /* Set the DMA abort callback */
    huart->hdmatx->XferAbortCallback = NULL;
 
    /* Enable the UART transmit DMA stream */
    tmp = (const uint32_t *)&pData;
    HAL_DMA_Start_IT(huart->hdmatx, *(const uint32_t *)tmp, (uint32_t)&huart->Instance->DR, Size);
 
    /* Clear the TC flag in the SR register by writing 0 to it */
    __HAL_UART_CLEAR_FLAG(huart, UART_FLAG_TC);
 
    /* Enable the DMA transfer for transmit request by setting the DMAT bit
       in the UART CR3 register */
    ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
  /* Check that a Rx process is not already ongoing */
  if (huart->RxState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }
 
    /* Set Reception type to Standard reception */
    huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
    return (UART_Start_Receive_DMA(huart, pData, Size));
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
{
  uint32_t dmarequest = 0x00U;
 
  dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
  if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
  {
    /* Disable the UART DMA Tx request */
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  }
 
  dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
  if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
  {
    /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
    ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
    /* Disable the UART DMA Rx request */
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  }
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
{
 
  if (huart->gState == HAL_UART_STATE_BUSY_TX)
  {
    /* Enable the UART DMA Tx request */
    ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  }
 
  if (huart->RxState == HAL_UART_STATE_BUSY_RX)
  {
    /* Clear the Overrun flag before resuming the Rx transfer*/
    __HAL_UART_CLEAR_OREFLAG(huart);
 
    /* Re-enable PE and ERR (Frame error, noise error, overrun error) interrupts */
    if (huart->Init.Parity != UART_PARITY_NONE)
    {
      ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
    }
    ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
    /* Enable the UART DMA Rx request */
    ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  }
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
{
  uint32_t dmarequest = 0x00U;
  /* The Lock is not implemented on this API to allow the user application
     to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback():
     when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated
     and the correspond call back is executed HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback()
     */
 
  /* Stop UART DMA Tx request if ongoing */
  dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
  if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx stream */
    if (huart->hdmatx != NULL)
    {
      HAL_DMA_Abort(huart->hdmatx);
    }
    UART_EndTxTransfer(huart);
  }
 
  /* Stop UART DMA Rx request if ongoing */
  dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
  if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx stream */
    if (huart->hdmarx != NULL)
    {
      HAL_DMA_Abort(huart->hdmarx);
    }
    UART_EndRxTransfer(huart);
  }
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint16_t *RxLen,
                                           uint32_t Timeout)
{
  uint8_t  *pdata8bits;
  uint16_t *pdata16bits;
  uint32_t tickstart;
 
  /* Check that a Rx process is not already ongoing */
  if (huart->RxState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return  HAL_ERROR;
    }
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->RxState = HAL_UART_STATE_BUSY_RX;
    huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE;
    huart->RxEventType = HAL_UART_RXEVENT_TC;
 
    /* Init tickstart for timeout management */
    tickstart = HAL_GetTick();
 
    huart->RxXferSize  = Size;
    huart->RxXferCount = Size;
 
    /* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */
    if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
    {
      pdata8bits  = NULL;
      pdata16bits = (uint16_t *) pData;
    }
    else
    {
      pdata8bits  = pData;
      pdata16bits = NULL;
    }
 
    /* Initialize output number of received elements */
    *RxLen = 0U;
 
    /* as long as data have to be received */
    while (huart->RxXferCount > 0U)
    {
      /* Check if IDLE flag is set */
      if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE))
      {
        /* Clear IDLE flag in ISR */
        __HAL_UART_CLEAR_IDLEFLAG(huart);
 
        /* If Set, but no data ever received, clear flag without exiting loop */
        /* If Set, and data has already been received, this means Idle Event is valid : End reception */
        if (*RxLen > 0U)
        {
          huart->RxEventType = HAL_UART_RXEVENT_IDLE;
          huart->RxState = HAL_UART_STATE_READY;
 
          return HAL_OK;
        }
      }
 
      /* Check if RXNE flag is set */
      if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RXNE))
      {
        if (pdata8bits == NULL)
        {
          *pdata16bits = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
          pdata16bits++;
        }
        else
        {
          if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE)))
          {
            *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
          }
          else
          {
            *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
          }
 
          pdata8bits++;
        }
        /* Increment number of received elements */
        *RxLen += 1U;
        huart->RxXferCount--;
      }
 
      /* Check for the Timeout */
      if (Timeout != HAL_MAX_DELAY)
      {
        if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
        {
          huart->RxState = HAL_UART_STATE_READY;
 
          return HAL_TIMEOUT;
        }
      }
    }
 
    /* Set number of received elements in output parameter : RxLen */
    *RxLen = huart->RxXferSize - huart->RxXferCount;
    /* At end of Rx process, restore huart->RxState to Ready */
    huart->RxState = HAL_UART_STATE_READY;
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
  HAL_StatusTypeDef status;
 
  /* Check that a Rx process is not already ongoing */
  if (huart->RxState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }
 
    /* Set Reception type to reception till IDLE Event*/
    huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE;
    huart->RxEventType = HAL_UART_RXEVENT_TC;
 
    status =  UART_Start_Receive_IT(huart, pData, Size);
 
    /* Check Rx process has been successfully started */
    if (status == HAL_OK)
    {
      if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
      {
        __HAL_UART_CLEAR_IDLEFLAG(huart);
        ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
      }
      else
      {
        /* In case of errors already pending when reception is started,
           Interrupts may have already been raised and lead to reception abortion.
           (Overrun error for instance).
           In such case Reception Type has been reset to HAL_UART_RECEPTION_STANDARD. */
        status = HAL_ERROR;
      }
    }
 
    return status;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UARTEx_ReceiveToIdle_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
  HAL_StatusTypeDef status;
 
  /* Check that a Rx process is not already ongoing */
  if (huart->RxState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }
 
    /* Set Reception type to reception till IDLE Event*/
    huart->ReceptionType = HAL_UART_RECEPTION_TOIDLE;
    huart->RxEventType = HAL_UART_RXEVENT_TC;
 
    status =  UART_Start_Receive_DMA(huart, pData, Size);
 
    /* Check Rx process has been successfully started */
    if (status == HAL_OK)
    {
      if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
      {
        __HAL_UART_CLEAR_IDLEFLAG(huart);
        ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
      }
      else
      {
        /* In case of errors already pending when reception is started,
           Interrupts may have already been raised and lead to reception abortion.
           (Overrun error for instance).
           In such case Reception Type has been reset to HAL_UART_RECEPTION_STANDARD. */
        status = HAL_ERROR;
      }
    }
 
    return status;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_UART_RxEventTypeTypeDef HAL_UARTEx_GetRxEventType(UART_HandleTypeDef *huart)
{
  /* Return Rx Event type value, as stored in UART handle */
  return(huart->RxEventType);
}
 
HAL_StatusTypeDef HAL_UART_Abort(UART_HandleTypeDef *huart)
{
  /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
  ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
  if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
  }
 
  /* Disable the UART DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx stream: use blocking DMA Abort API (no callback) */
    if (huart->hdmatx != NULL)
    {
      /* Set the UART DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      huart->hdmatx->XferAbortCallback = NULL;
 
      if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
      {
        if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
        {
          /* Set error code to DMA */
          huart->ErrorCode = HAL_UART_ERROR_DMA;
 
          return HAL_TIMEOUT;
        }
      }
    }
  }
 
  /* Disable the UART DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx stream: use blocking DMA Abort API (no callback) */
    if (huart->hdmarx != NULL)
    {
      /* Set the UART DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      huart->hdmarx->XferAbortCallback = NULL;
 
      if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
      {
        if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
        {
          /* Set error code to DMA */
          huart->ErrorCode = HAL_UART_ERROR_DMA;
 
          return HAL_TIMEOUT;
        }
      }
    }
  }
 
  /* Reset Tx and Rx transfer counters */
  huart->TxXferCount = 0x00U;
  huart->RxXferCount = 0x00U;
 
  /* Reset ErrorCode */
  huart->ErrorCode = HAL_UART_ERROR_NONE;
 
  /* Restore huart->RxState and huart->gState to Ready */
  huart->RxState = HAL_UART_STATE_READY;
  huart->gState = HAL_UART_STATE_READY;
  huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_AbortTransmit(UART_HandleTypeDef *huart)
{
  /* Disable TXEIE and TCIE interrupts */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
 
  /* Disable the UART DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx stream : use blocking DMA Abort API (no callback) */
    if (huart->hdmatx != NULL)
    {
      /* Set the UART DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      huart->hdmatx->XferAbortCallback = NULL;
 
      if (HAL_DMA_Abort(huart->hdmatx) != HAL_OK)
      {
        if (HAL_DMA_GetError(huart->hdmatx) == HAL_DMA_ERROR_TIMEOUT)
        {
          /* Set error code to DMA */
          huart->ErrorCode = HAL_UART_ERROR_DMA;
 
          return HAL_TIMEOUT;
        }
      }
    }
  }
 
  /* Reset Tx transfer counter */
  huart->TxXferCount = 0x00U;
 
  /* Restore huart->gState to Ready */
  huart->gState = HAL_UART_STATE_READY;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_AbortReceive(UART_HandleTypeDef *huart)
{
  /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
  if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
  }
 
  /* Disable the UART DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx stream : use blocking DMA Abort API (no callback) */
    if (huart->hdmarx != NULL)
    {
      /* Set the UART DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      huart->hdmarx->XferAbortCallback = NULL;
 
      if (HAL_DMA_Abort(huart->hdmarx) != HAL_OK)
      {
        if (HAL_DMA_GetError(huart->hdmarx) == HAL_DMA_ERROR_TIMEOUT)
        {
          /* Set error code to DMA */
          huart->ErrorCode = HAL_UART_ERROR_DMA;
 
          return HAL_TIMEOUT;
        }
      }
    }
  }
 
  /* Reset Rx transfer counter */
  huart->RxXferCount = 0x00U;
 
  /* Restore huart->RxState to Ready */
  huart->RxState = HAL_UART_STATE_READY;
  huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_Abort_IT(UART_HandleTypeDef *huart)
{
  uint32_t AbortCplt = 0x01U;
 
  /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
  ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
  if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
  }
 
  /* If DMA Tx and/or DMA Rx Handles are associated to UART Handle, DMA Abort complete callbacks should be initialised
     before any call to DMA Abort functions */
  /* DMA Tx Handle is valid */
  if (huart->hdmatx != NULL)
  {
    /* Set DMA Abort Complete callback if UART DMA Tx request if enabled.
       Otherwise, set it to NULL */
    if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
    {
      huart->hdmatx->XferAbortCallback = UART_DMATxAbortCallback;
    }
    else
    {
      huart->hdmatx->XferAbortCallback = NULL;
    }
  }
  /* DMA Rx Handle is valid */
  if (huart->hdmarx != NULL)
  {
    /* Set DMA Abort Complete callback if UART DMA Rx request if enabled.
       Otherwise, set it to NULL */
    if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
    {
      huart->hdmarx->XferAbortCallback = UART_DMARxAbortCallback;
    }
    else
    {
      huart->hdmarx->XferAbortCallback = NULL;
    }
  }
 
  /* Disable the UART DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
  {
    /* Disable DMA Tx at UART level */
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx stream : use non blocking DMA Abort API (callback) */
    if (huart->hdmatx != NULL)
    {
      /* UART Tx DMA Abort callback has already been initialised :
         will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
 
      /* Abort DMA TX */
      if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
      {
        huart->hdmatx->XferAbortCallback = NULL;
      }
      else
      {
        AbortCplt = 0x00U;
      }
    }
  }
 
  /* Disable the UART DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx stream : use non blocking DMA Abort API (callback) */
    if (huart->hdmarx != NULL)
    {
      /* UART Rx DMA Abort callback has already been initialised :
         will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
 
      /* Abort DMA RX */
      if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
      {
        huart->hdmarx->XferAbortCallback = NULL;
        AbortCplt = 0x01U;
      }
      else
      {
        AbortCplt = 0x00U;
      }
    }
  }
 
  /* if no DMA abort complete callback execution is required => call user Abort Complete callback */
  if (AbortCplt == 0x01U)
  {
    /* Reset Tx and Rx transfer counters */
    huart->TxXferCount = 0x00U;
    huart->RxXferCount = 0x00U;
 
    /* Reset ErrorCode */
    huart->ErrorCode = HAL_UART_ERROR_NONE;
 
    /* Restore huart->gState and huart->RxState to Ready */
    huart->gState  = HAL_UART_STATE_READY;
    huart->RxState = HAL_UART_STATE_READY;
    huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
    /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /* Call registered Abort complete callback */
    huart->AbortCpltCallback(huart);
#else
    /* Call legacy weak Abort complete callback */
    HAL_UART_AbortCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
  }
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_AbortTransmit_IT(UART_HandleTypeDef *huart)
{
  /* Disable TXEIE and TCIE interrupts */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
 
  /* Disable the UART DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx stream : use blocking DMA Abort API (no callback) */
    if (huart->hdmatx != NULL)
    {
      /* Set the UART DMA Abort callback :
         will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
      huart->hdmatx->XferAbortCallback = UART_DMATxOnlyAbortCallback;
 
      /* Abort DMA TX */
      if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
      {
        /* Call Directly huart->hdmatx->XferAbortCallback function in case of error */
        huart->hdmatx->XferAbortCallback(huart->hdmatx);
      }
    }
    else
    {
      /* Reset Tx transfer counter */
      huart->TxXferCount = 0x00U;
 
      /* Restore huart->gState to Ready */
      huart->gState = HAL_UART_STATE_READY;
 
      /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
      /* Call registered Abort Transmit Complete Callback */
      huart->AbortTransmitCpltCallback(huart);
#else
      /* Call legacy weak Abort Transmit Complete Callback */
      HAL_UART_AbortTransmitCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
    }
  }
  else
  {
    /* Reset Tx transfer counter */
    huart->TxXferCount = 0x00U;
 
    /* Restore huart->gState to Ready */
    huart->gState = HAL_UART_STATE_READY;
 
    /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /* Call registered Abort Transmit Complete Callback */
    huart->AbortTransmitCpltCallback(huart);
#else
    /* Call legacy weak Abort Transmit Complete Callback */
    HAL_UART_AbortTransmitCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
  }
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_AbortReceive_IT(UART_HandleTypeDef *huart)
{
  /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* If Reception till IDLE event was ongoing, disable IDLEIE interrupt */
  if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_IDLEIE));
  }
 
  /* Disable the UART DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx stream : use blocking DMA Abort API (no callback) */
    if (huart->hdmarx != NULL)
    {
      /* Set the UART DMA Abort callback :
         will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
      huart->hdmarx->XferAbortCallback = UART_DMARxOnlyAbortCallback;
 
      /* Abort DMA RX */
      if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
      {
        /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
        huart->hdmarx->XferAbortCallback(huart->hdmarx);
      }
    }
    else
    {
      /* Reset Rx transfer counter */
      huart->RxXferCount = 0x00U;
 
      /* Restore huart->RxState to Ready */
      huart->RxState = HAL_UART_STATE_READY;
      huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
      /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
      /* Call registered Abort Receive Complete Callback */
      huart->AbortReceiveCpltCallback(huart);
#else
      /* Call legacy weak Abort Receive Complete Callback */
      HAL_UART_AbortReceiveCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
    }
  }
  else
  {
    /* Reset Rx transfer counter */
    huart->RxXferCount = 0x00U;
 
    /* Restore huart->RxState to Ready */
    huart->RxState = HAL_UART_STATE_READY;
    huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
    /* As no DMA to be aborted, call directly user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /* Call registered Abort Receive Complete Callback */
    huart->AbortReceiveCpltCallback(huart);
#else
    /* Call legacy weak Abort Receive Complete Callback */
    HAL_UART_AbortReceiveCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
  }
 
  return HAL_OK;
}
 
void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
{
  uint32_t isrflags   = READ_REG(huart->Instance->SR);
  uint32_t cr1its     = READ_REG(huart->Instance->CR1);
  uint32_t cr3its     = READ_REG(huart->Instance->CR3);
  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)
  {
    /* UART in mode Receiver -------------------------------------------------*/
    if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
    {
      UART_Receive_IT(huart);
      return;
    }
  }
 
  /* If some errors occur */
  if ((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET)
                                || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET)))
  {
    /* UART parity error interrupt occurred ----------------------------------*/
    if (((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET))
    {
      huart->ErrorCode |= HAL_UART_ERROR_PE;
    }
 
    /* UART noise error interrupt occurred -----------------------------------*/
    if (((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
    {
      huart->ErrorCode |= HAL_UART_ERROR_NE;
    }
 
    /* UART frame error interrupt occurred -----------------------------------*/
    if (((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET))
    {
      huart->ErrorCode |= HAL_UART_ERROR_FE;
    }
 
    /* UART Over-Run interrupt occurred --------------------------------------*/
    if (((isrflags & USART_SR_ORE) != RESET) && (((cr1its & USART_CR1_RXNEIE) != RESET)
                                                 || ((cr3its & USART_CR3_EIE) != RESET)))
    {
      huart->ErrorCode |= HAL_UART_ERROR_ORE;
    }
 
    /* Call UART Error Call back function if need be --------------------------*/
    if (huart->ErrorCode != HAL_UART_ERROR_NONE)
    {
      /* UART in mode Receiver -----------------------------------------------*/
      if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET))
      {
        UART_Receive_IT(huart);
      }
 
      /* If Overrun error occurs, or if any error occurs in DMA mode reception,
         consider error as blocking */
      dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
      if (((huart->ErrorCode & HAL_UART_ERROR_ORE) != RESET) || dmarequest)
      {
        /* Blocking error : transfer is aborted
           Set the UART state ready to be able to start again the process,
           Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
        UART_EndRxTransfer(huart);
 
        /* Disable the UART DMA Rx request if enabled */
        if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
        {
          ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
          /* Abort the UART DMA Rx stream */
          if (huart->hdmarx != NULL)
          {
            /* Set the UART DMA Abort callback :
               will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */
            huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;
            if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
            {
              /* Call Directly XferAbortCallback function in case of error */
              huart->hdmarx->XferAbortCallback(huart->hdmarx);
            }
          }
          else
          {
            /* Call user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
            /*Call registered error callback*/
            huart->ErrorCallback(huart);
#else
            /*Call legacy weak error callback*/
            HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
          }
        }
        else
        {
          /* Call user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
          /*Call registered error callback*/
          huart->ErrorCallback(huart);
#else
          /*Call legacy weak error callback*/
          HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
        }
      }
      else
      {
        /* Non Blocking error : transfer could go on.
           Error is notified to user through user error callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
        /*Call registered error callback*/
        huart->ErrorCallback(huart);
#else
        /*Call legacy weak error callback*/
        HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
 
        huart->ErrorCode = HAL_UART_ERROR_NONE;
      }
    }
    return;
  } /* End if some error occurs */
 
  /* Check current reception Mode :
     If Reception till IDLE event has been selected : */
  if ((huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
      && ((isrflags & USART_SR_IDLE) != 0U)
      && ((cr1its & USART_SR_IDLE) != 0U))
  {
    __HAL_UART_CLEAR_IDLEFLAG(huart);
 
    /* Check if DMA mode is enabled in UART */
    if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
    {
      /* DMA mode enabled */
      /* Check received length : If all expected data are received, do nothing,
         (DMA cplt callback will be called).
         Otherwise, if at least one data has already been received, IDLE event is to be notified to user */
      uint16_t nb_remaining_rx_data = (uint16_t) __HAL_DMA_GET_COUNTER(huart->hdmarx);
      if ((nb_remaining_rx_data > 0U)
          && (nb_remaining_rx_data < huart->RxXferSize))
      {
        /* Reception is not complete */
        huart->RxXferCount = nb_remaining_rx_data;
 
        /* In Normal mode, end DMA xfer and HAL UART Rx process*/
        if (huart->hdmarx->Init.Mode != DMA_CIRCULAR)
        {
          /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
          ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
          ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
          /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
             in the UART CR3 register */
          ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
          /* At end of Rx process, restore huart->RxState to Ready */
          huart->RxState = HAL_UART_STATE_READY;
          huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
          ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
 
          /* Last bytes received, so no need as the abort is immediate */
          (void)HAL_DMA_Abort(huart->hdmarx);
        }
 
        /* Initialize type of RxEvent that correspond to RxEvent callback execution;
        In this case, Rx Event type is Idle Event */
        huart->RxEventType = HAL_UART_RXEVENT_IDLE;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
        /*Call registered Rx Event callback*/
        huart->RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount));
#else
        /*Call legacy weak Rx Event callback*/
        HAL_UARTEx_RxEventCallback(huart, (huart->RxXferSize - huart->RxXferCount));
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
      }
      return;
    }
    else
    {
      /* DMA mode not enabled */
      /* Check received length : If all expected data are received, do nothing.
         Otherwise, if at least one data has already been received, IDLE event is to be notified to user */
      uint16_t nb_rx_data = huart->RxXferSize - huart->RxXferCount;
      if ((huart->RxXferCount > 0U)
          && (nb_rx_data > 0U))
      {
        /* Disable the UART Parity Error Interrupt and RXNE interrupts */
        ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
 
        /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
        ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
        /* Rx process is completed, restore huart->RxState to Ready */
        huart->RxState = HAL_UART_STATE_READY;
        huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
        ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
 
        /* Initialize type of RxEvent that correspond to RxEvent callback execution;
           In this case, Rx Event type is Idle Event */
        huart->RxEventType = HAL_UART_RXEVENT_IDLE;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
        /*Call registered Rx complete callback*/
        huart->RxEventCallback(huart, nb_rx_data);
#else
        /*Call legacy weak Rx Event callback*/
        HAL_UARTEx_RxEventCallback(huart, nb_rx_data);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
      }
      return;
    }
  }
 
  /* UART in mode Transmitter ------------------------------------------------*/
  if (((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET))
  {
    UART_Transmit_IT(huart);
    return;
  }
 
  /* UART in mode Transmitter end --------------------------------------------*/
  if (((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET))
  {
    UART_EndTransmit_IT(huart);
    return;
  }
}
 
__weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  /* NOTE: This function should not be modified, when the callback is needed,
           the HAL_UART_TxCpltCallback could be implemented in the user file
   */
}
 
__weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  /* NOTE: This function should not be modified, when the callback is needed,
           the HAL_UART_TxHalfCpltCallback could be implemented in the user file
   */
}
 
__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  /* NOTE: This function should not be modified, when the callback is needed,
           the HAL_UART_RxCpltCallback could be implemented in the user file
   */
}
 
__weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  /* NOTE: This function should not be modified, when the callback is needed,
           the HAL_UART_RxHalfCpltCallback could be implemented in the user file
   */
}
 
__weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  /* NOTE: This function should not be modified, when the callback is needed,
           the HAL_UART_ErrorCallback could be implemented in the user file
   */
}
 
__weak void HAL_UART_AbortCpltCallback(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
 
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_UART_AbortCpltCallback can be implemented in the user file.
   */
}
 
__weak void HAL_UART_AbortTransmitCpltCallback(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
 
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_UART_AbortTransmitCpltCallback can be implemented in the user file.
   */
}
 
__weak void HAL_UART_AbortReceiveCpltCallback(UART_HandleTypeDef *huart)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
 
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_UART_AbortReceiveCpltCallback can be implemented in the user file.
   */
}
 
__weak void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
{
  /* Prevent unused argument(s) compilation warning */
  UNUSED(huart);
  UNUSED(Size);
 
  /* NOTE : This function should not be modified, when the callback is needed,
            the HAL_UARTEx_RxEventCallback can be implemented in the user file.
   */
}
 
HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
{
  /* Check the parameters */
  assert_param(IS_UART_INSTANCE(huart->Instance));
 
  /* Process Locked */
  __HAL_LOCK(huart);
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Send break characters */
  ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_SBK);
 
  huart->gState = HAL_UART_STATE_READY;
 
  /* Process Unlocked */
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
{
  /* Check the parameters */
  assert_param(IS_UART_INSTANCE(huart->Instance));
 
  /* Process Locked */
  __HAL_LOCK(huart);
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Enable the USART mute mode  by setting the RWU bit in the CR1 register */
  ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_RWU);
 
  huart->gState = HAL_UART_STATE_READY;
  huart->RxEventType = HAL_UART_RXEVENT_TC;
 
  /* Process Unlocked */
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_MultiProcessor_ExitMuteMode(UART_HandleTypeDef *huart)
{
  /* Check the parameters */
  assert_param(IS_UART_INSTANCE(huart->Instance));
 
  /* Process Locked */
  __HAL_LOCK(huart);
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Disable the USART mute mode by clearing the RWU bit in the CR1 register */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_RWU);
 
  huart->gState = HAL_UART_STATE_READY;
  huart->RxEventType = HAL_UART_RXEVENT_TC;
 
  /* Process Unlocked */
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
{
  uint32_t tmpreg = 0x00U;
 
  /* Process Locked */
  __HAL_LOCK(huart);
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /*-------------------------- USART CR1 Configuration -----------------------*/
  tmpreg = huart->Instance->CR1;
 
  /* Clear TE and RE bits */
  tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
 
  /* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
  tmpreg |= (uint32_t)USART_CR1_TE;
 
  /* Write to USART CR1 */
  WRITE_REG(huart->Instance->CR1, (uint32_t)tmpreg);
 
  huart->gState = HAL_UART_STATE_READY;
 
  /* Process Unlocked */
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
{
  uint32_t tmpreg = 0x00U;
 
  /* Process Locked */
  __HAL_LOCK(huart);
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /*-------------------------- USART CR1 Configuration -----------------------*/
  tmpreg = huart->Instance->CR1;
 
  /* Clear TE and RE bits */
  tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_TE | USART_CR1_RE));
 
  /* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
  tmpreg |= (uint32_t)USART_CR1_RE;
 
  /* Write to USART CR1 */
  WRITE_REG(huart->Instance->CR1, (uint32_t)tmpreg);
 
  huart->gState = HAL_UART_STATE_READY;
 
  /* Process Unlocked */
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_UART_StateTypeDef HAL_UART_GetState(const UART_HandleTypeDef *huart)
{
  uint32_t temp1 = 0x00U, temp2 = 0x00U;
  temp1 = huart->gState;
  temp2 = huart->RxState;
 
  return (HAL_UART_StateTypeDef)(temp1 | temp2);
}
 
uint32_t HAL_UART_GetError(const UART_HandleTypeDef *huart)
{
  return huart->ErrorCode;
}
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
void UART_InitCallbacksToDefault(UART_HandleTypeDef *huart)
{
  /* Init the UART Callback settings */
  huart->TxHalfCpltCallback        = HAL_UART_TxHalfCpltCallback;        /* Legacy weak TxHalfCpltCallback        */
  huart->TxCpltCallback            = HAL_UART_TxCpltCallback;            /* Legacy weak TxCpltCallback            */
  huart->RxHalfCpltCallback        = HAL_UART_RxHalfCpltCallback;        /* Legacy weak RxHalfCpltCallback        */
  huart->RxCpltCallback            = HAL_UART_RxCpltCallback;            /* Legacy weak RxCpltCallback            */
  huart->ErrorCallback             = HAL_UART_ErrorCallback;             /* Legacy weak ErrorCallback             */
  huart->AbortCpltCallback         = HAL_UART_AbortCpltCallback;         /* Legacy weak AbortCpltCallback         */
  huart->AbortTransmitCpltCallback = HAL_UART_AbortTransmitCpltCallback; /* Legacy weak AbortTransmitCpltCallback */
  huart->AbortReceiveCpltCallback  = HAL_UART_AbortReceiveCpltCallback;  /* Legacy weak AbortReceiveCpltCallback  */
  huart->RxEventCallback           = HAL_UARTEx_RxEventCallback;         /* Legacy weak RxEventCallback           */
 
}
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
 
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  /* DMA Normal mode*/
  if ((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)
  {
    huart->TxXferCount = 0x00U;
 
    /* Disable the DMA transfer for transmit request by setting the DMAT bit
       in the UART CR3 register */
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Enable the UART Transmit Complete Interrupt */
    ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
 
  }
  /* DMA Circular mode */
  else
  {
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /*Call registered Tx complete callback*/
    huart->TxCpltCallback(huart);
#else
    /*Call legacy weak Tx complete callback*/
    HAL_UART_TxCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
  }
}
 
static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /*Call registered Tx complete callback*/
  huart->TxHalfCpltCallback(huart);
#else
  /*Call legacy weak Tx complete callback*/
  HAL_UART_TxHalfCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
}
 
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
 
  /* DMA Normal mode*/
  if ((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U)
  {
    huart->RxXferCount = 0U;
 
    /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
    ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
    /* Disable the DMA transfer for the receiver request by setting the DMAR bit
       in the UART CR3 register */
    ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* At end of Rx process, restore huart->RxState to Ready */
    huart->RxState = HAL_UART_STATE_READY;
 
    /* If Reception till IDLE event has been selected, Disable IDLE Interrupt */
    if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
    {
      ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
    }
  }
 
  /* Initialize type of RxEvent that correspond to RxEvent callback execution;
   In this case, Rx Event type is Transfer Complete */
  huart->RxEventType = HAL_UART_RXEVENT_TC;
 
  /* Check current reception Mode :
     If Reception till IDLE event has been selected : use Rx Event callback */
  if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
  {
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /*Call registered Rx Event callback*/
    huart->RxEventCallback(huart, huart->RxXferSize);
#else
    /*Call legacy weak Rx Event callback*/
    HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
  }
  else
  {
    /* In other cases : use Rx Complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /*Call registered Rx complete callback*/
    huart->RxCpltCallback(huart);
#else
    /*Call legacy weak Rx complete callback*/
    HAL_UART_RxCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
  }
}
 
static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
 
  /* Initialize type of RxEvent that correspond to RxEvent callback execution;
     In this case, Rx Event type is Half Transfer */
  huart->RxEventType = HAL_UART_RXEVENT_HT;
 
  /* Check current reception Mode :
     If Reception till IDLE event has been selected : use Rx Event callback */
  if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
  {
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /*Call registered Rx Event callback*/
    huart->RxEventCallback(huart, huart->RxXferSize / 2U);
#else
    /*Call legacy weak Rx Event callback*/
    HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize / 2U);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
  }
  else
  {
    /* In other cases : use Rx Half Complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /*Call registered Rx Half complete callback*/
    huart->RxHalfCpltCallback(huart);
#else
    /*Call legacy weak Rx Half complete callback*/
    HAL_UART_RxHalfCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
  }
}
 
static void UART_DMAError(DMA_HandleTypeDef *hdma)
{
  uint32_t dmarequest = 0x00U;
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
 
  /* Stop UART DMA Tx request if ongoing */
  dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT);
  if ((huart->gState == HAL_UART_STATE_BUSY_TX) && dmarequest)
  {
    huart->TxXferCount = 0x00U;
    UART_EndTxTransfer(huart);
  }
 
  /* Stop UART DMA Rx request if ongoing */
  dmarequest = HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR);
  if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && dmarequest)
  {
    huart->RxXferCount = 0x00U;
    UART_EndRxTransfer(huart);
  }
 
  huart->ErrorCode |= HAL_UART_ERROR_DMA;
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /*Call registered error callback*/
  huart->ErrorCallback(huart);
#else
  /*Call legacy weak error callback*/
  HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
}
 
static HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status,
                                                     uint32_t Tickstart, uint32_t Timeout)
{
  /* Wait until flag is set */
  while ((__HAL_UART_GET_FLAG(huart, Flag) ? SET : RESET) == Status)
  {
    /* Check for the Timeout */
    if (Timeout != HAL_MAX_DELAY)
    {
      if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
      {
 
        return HAL_TIMEOUT;
      }
 
      if ((READ_BIT(huart->Instance->CR1, USART_CR1_RE) != 0U) && (Flag != UART_FLAG_TXE) && (Flag != UART_FLAG_TC))
      {
        if (__HAL_UART_GET_FLAG(huart, UART_FLAG_ORE) == SET)
        {
          /* Clear Overrun Error flag*/
          __HAL_UART_CLEAR_OREFLAG(huart);
 
          /* Blocking error : transfer is aborted
          Set the UART state ready to be able to start again the process,
          Disable Rx Interrupts if ongoing */
          UART_EndRxTransfer(huart);
 
          huart->ErrorCode = HAL_UART_ERROR_ORE;
 
          /* Process Unlocked */
          __HAL_UNLOCK(huart);
 
          return HAL_ERROR;
        }
      }
    }
  }
  return HAL_OK;
}
 
HAL_StatusTypeDef UART_Start_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
  huart->pRxBuffPtr = pData;
  huart->RxXferSize = Size;
  huart->RxXferCount = Size;
 
  huart->ErrorCode = HAL_UART_ERROR_NONE;
  huart->RxState = HAL_UART_STATE_BUSY_RX;
 
  if (huart->Init.Parity != UART_PARITY_NONE)
  {
    /* Enable the UART Parity Error Interrupt */
    __HAL_UART_ENABLE_IT(huart, UART_IT_PE);
  }
 
  /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
  __HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
 
  /* Enable the UART Data Register not empty Interrupt */
  __HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef UART_Start_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
  uint32_t *tmp;
 
  huart->pRxBuffPtr = pData;
  huart->RxXferSize = Size;
 
  huart->ErrorCode = HAL_UART_ERROR_NONE;
  huart->RxState = HAL_UART_STATE_BUSY_RX;
 
  /* Set the UART DMA transfer complete callback */
  huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
 
  /* Set the UART DMA Half transfer complete callback */
  huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
 
  /* Set the DMA error callback */
  huart->hdmarx->XferErrorCallback = UART_DMAError;
 
  /* Set the DMA abort callback */
  huart->hdmarx->XferAbortCallback = NULL;
 
  /* Enable the DMA stream */
  tmp = (uint32_t *)&pData;
  HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->DR, *(uint32_t *)tmp, Size);
 
  /* Clear the Overrun flag just before enabling the DMA Rx request: can be mandatory for the second transfer */
  __HAL_UART_CLEAR_OREFLAG(huart);
 
  if (huart->Init.Parity != UART_PARITY_NONE)
  {
    /* Enable the UART Parity Error Interrupt */
    ATOMIC_SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
  }
 
  /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
  ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* Enable the DMA transfer for the receiver request by setting the DMAR bit
  in the UART CR3 register */
  ATOMIC_SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
  return HAL_OK;
}
 
static void UART_EndTxTransfer(UART_HandleTypeDef *huart)
{
  /* Disable TXEIE and TCIE interrupts */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
 
  /* At end of Tx process, restore huart->gState to Ready */
  huart->gState = HAL_UART_STATE_READY;
}
 
static void UART_EndRxTransfer(UART_HandleTypeDef *huart)
{
  /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  ATOMIC_CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  ATOMIC_CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* In case of reception waiting for IDLE event, disable also the IDLE IE interrupt source */
  if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
  {
    ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
  }
 
  /* At end of Rx process, restore huart->RxState to Ready */
  huart->RxState = HAL_UART_STATE_READY;
  huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
}
 
static void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
  huart->RxXferCount = 0x00U;
  huart->TxXferCount = 0x00U;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /*Call registered error callback*/
  huart->ErrorCallback(huart);
#else
  /*Call legacy weak error callback*/
  HAL_UART_ErrorCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
}
 
static void UART_DMATxAbortCallback(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
 
  huart->hdmatx->XferAbortCallback = NULL;
 
  /* Check if an Abort process is still ongoing */
  if (huart->hdmarx != NULL)
  {
    if (huart->hdmarx->XferAbortCallback != NULL)
    {
      return;
    }
  }
 
  /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
  huart->TxXferCount = 0x00U;
  huart->RxXferCount = 0x00U;
 
  /* Reset ErrorCode */
  huart->ErrorCode = HAL_UART_ERROR_NONE;
 
  /* Restore huart->gState and huart->RxState to Ready */
  huart->gState  = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
  huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
  /* Call user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /* Call registered Abort complete callback */
  huart->AbortCpltCallback(huart);
#else
  /* Call legacy weak Abort complete callback */
  HAL_UART_AbortCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
}
 
static void UART_DMARxAbortCallback(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
 
  huart->hdmarx->XferAbortCallback = NULL;
 
  /* Check if an Abort process is still ongoing */
  if (huart->hdmatx != NULL)
  {
    if (huart->hdmatx->XferAbortCallback != NULL)
    {
      return;
    }
  }
 
  /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
  huart->TxXferCount = 0x00U;
  huart->RxXferCount = 0x00U;
 
  /* Reset ErrorCode */
  huart->ErrorCode = HAL_UART_ERROR_NONE;
 
  /* Restore huart->gState and huart->RxState to Ready */
  huart->gState  = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
  huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
  /* Call user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /* Call registered Abort complete callback */
  huart->AbortCpltCallback(huart);
#else
  /* Call legacy weak Abort complete callback */
  HAL_UART_AbortCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
}
 
static void UART_DMATxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
 
  huart->TxXferCount = 0x00U;
 
  /* Restore huart->gState to Ready */
  huart->gState = HAL_UART_STATE_READY;
 
  /* Call user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /* Call registered Abort Transmit Complete Callback */
  huart->AbortTransmitCpltCallback(huart);
#else
  /* Call legacy weak Abort Transmit Complete Callback */
  HAL_UART_AbortTransmitCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
}
 
static void UART_DMARxOnlyAbortCallback(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent;
 
  huart->RxXferCount = 0x00U;
 
  /* Restore huart->RxState to Ready */
  huart->RxState = HAL_UART_STATE_READY;
  huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
  /* Call user Abort complete callback */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /* Call registered Abort Receive Complete Callback */
  huart->AbortReceiveCpltCallback(huart);
#else
  /* Call legacy weak Abort Receive Complete Callback */
  HAL_UART_AbortReceiveCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
}
 
static HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
{
  const uint16_t *tmp;
 
  /* Check that a Tx process is ongoing */
  if (huart->gState == HAL_UART_STATE_BUSY_TX)
  {
    if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
    {
      tmp = (const uint16_t *) huart->pTxBuffPtr;
      huart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF);
      huart->pTxBuffPtr += 2U;
    }
    else
    {
      huart->Instance->DR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0x00FF);
    }
 
    if (--huart->TxXferCount == 0U)
    {
      /* Disable the UART Transmit Data Register Empty Interrupt */
      __HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
 
      /* Enable the UART Transmit Complete Interrupt */
      __HAL_UART_ENABLE_IT(huart, UART_IT_TC);
    }
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
static HAL_StatusTypeDef UART_EndTransmit_IT(UART_HandleTypeDef *huart)
{
  /* Disable the UART Transmit Complete Interrupt */
  __HAL_UART_DISABLE_IT(huart, UART_IT_TC);
 
  /* Tx process is ended, restore huart->gState to Ready */
  huart->gState = HAL_UART_STATE_READY;
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /*Call registered Tx complete callback*/
  huart->TxCpltCallback(huart);
#else
  /*Call legacy weak Tx complete callback*/
  HAL_UART_TxCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
 
  return HAL_OK;
}
 
static HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
{
  uint8_t  *pdata8bits;
  uint16_t *pdata16bits;
 
  /* Check that a Rx process is ongoing */
  if (huart->RxState == HAL_UART_STATE_BUSY_RX)
  {
    if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
    {
      pdata8bits  = NULL;
      pdata16bits = (uint16_t *) huart->pRxBuffPtr;
      *pdata16bits = (uint16_t)(huart->Instance->DR & (uint16_t)0x01FF);
      huart->pRxBuffPtr += 2U;
    }
    else
    {
      pdata8bits = (uint8_t *) huart->pRxBuffPtr;
      pdata16bits  = NULL;
 
      if ((huart->Init.WordLength == UART_WORDLENGTH_9B) || ((huart->Init.WordLength == UART_WORDLENGTH_8B) && (huart->Init.Parity == UART_PARITY_NONE)))
      {
        *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x00FF);
      }
      else
      {
        *pdata8bits = (uint8_t)(huart->Instance->DR & (uint8_t)0x007F);
      }
      huart->pRxBuffPtr += 1U;
    }
 
    if (--huart->RxXferCount == 0U)
    {
      /* Disable the UART Data Register not empty Interrupt */
      __HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
 
      /* Disable the UART Parity Error Interrupt */
      __HAL_UART_DISABLE_IT(huart, UART_IT_PE);
 
      /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
      __HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
 
      /* Rx process is completed, restore huart->RxState to Ready */
      huart->RxState = HAL_UART_STATE_READY;
 
      /* Initialize type of RxEvent to Transfer Complete */
      huart->RxEventType = HAL_UART_RXEVENT_TC;
 
      /* Check current reception Mode :
         If Reception till IDLE event has been selected : */
      if (huart->ReceptionType == HAL_UART_RECEPTION_TOIDLE)
      {
        /* Set reception type to Standard */
        huart->ReceptionType = HAL_UART_RECEPTION_STANDARD;
 
        /* Disable IDLE interrupt */
        ATOMIC_CLEAR_BIT(huart->Instance->CR1, USART_CR1_IDLEIE);
 
        /* Check if IDLE flag is set */
        if (__HAL_UART_GET_FLAG(huart, UART_FLAG_IDLE))
        {
          /* Clear IDLE flag in ISR */
          __HAL_UART_CLEAR_IDLEFLAG(huart);
        }
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
        /*Call registered Rx Event callback*/
        huart->RxEventCallback(huart, huart->RxXferSize);
#else
        /*Call legacy weak Rx Event callback*/
        HAL_UARTEx_RxEventCallback(huart, huart->RxXferSize);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
      }
      else
      {
        /* Standard reception API called */
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
        /*Call registered Rx complete callback*/
        huart->RxCpltCallback(huart);
#else
        /*Call legacy weak Rx complete callback*/
        HAL_UART_RxCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
      }
 
      return HAL_OK;
    }
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
static void UART_SetConfig(UART_HandleTypeDef *huart)
{
  uint32_t tmpreg;
  uint32_t pclk;
 
  /* Check the parameters */
  assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
  assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
  assert_param(IS_UART_PARITY(huart->Init.Parity));
  assert_param(IS_UART_MODE(huart->Init.Mode));
 
  /*-------------------------- USART CR2 Configuration -----------------------*/
  /* Configure the UART Stop Bits: Set STOP[13:12] bits
     according to huart->Init.StopBits value */
  MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
 
  /*-------------------------- USART CR1 Configuration -----------------------*/
  /* Configure the UART Word Length, Parity and mode:
     Set the M bits according to huart->Init.WordLength value
     Set PCE and PS bits according to huart->Init.Parity value
     Set TE and RE bits according to huart->Init.Mode value
     Set OVER8 bit according to huart->Init.OverSampling value */
 
  tmpreg = (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling;
  MODIFY_REG(huart->Instance->CR1,
             (uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8),
             tmpreg);
 
  /*-------------------------- USART CR3 Configuration -----------------------*/
  /* Configure the UART HFC: Set CTSE and RTSE bits according to huart->Init.HwFlowCtl value */
  MODIFY_REG(huart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE), huart->Init.HwFlowCtl);
 
 
#if defined(USART6) && defined(UART9) && defined(UART10)
    if ((huart->Instance == USART1) || (huart->Instance == USART6) || (huart->Instance == UART9) || (huart->Instance == UART10))
    {
      pclk = HAL_RCC_GetPCLK2Freq();
    }
#elif defined(USART6)
    if ((huart->Instance == USART1) || (huart->Instance == USART6))
    {
      pclk = HAL_RCC_GetPCLK2Freq();
    }
#else
    if (huart->Instance == USART1)
    {
      pclk = HAL_RCC_GetPCLK2Freq();
    }
#endif /* USART6 */
    else
    {
      pclk = HAL_RCC_GetPCLK1Freq();
    }
  /*-------------------------- USART BRR Configuration ---------------------*/
  if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
  {
    huart->Instance->BRR = UART_BRR_SAMPLING8(pclk, huart->Init.BaudRate);
  }
  else
  {
    huart->Instance->BRR = UART_BRR_SAMPLING16(pclk, huart->Init.BaudRate);
  }
}
 
#endif /* HAL_UART_MODULE_ENABLED */