stm32f7xx_hal_uart.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_hal.h"
 
#ifdef HAL_UART_MODULE_ENABLED
 
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define USART_CR1_FIELDS  ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \
                                      USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8 )) 
#define USART_CR3_FIELDS  ((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE | USART_CR3_ONEBIT))  
#define UART_BRR_MIN    0x10U        /* UART BRR minimum authorized value */
#define UART_BRR_MAX    0x0000FFFFU  /* UART BRR maximum authorized value */
 
/* Private macros ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
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_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
static void UART_DMATxHalfCplt(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 void UART_TxISR_8BIT(UART_HandleTypeDef *huart);
static void UART_TxISR_16BIT(UART_HandleTypeDef *huart);
static void UART_EndTransmit_IT(UART_HandleTypeDef *huart);
static void UART_RxISR_8BIT(UART_HandleTypeDef *huart);
static void UART_RxISR_16BIT(UART_HandleTypeDef *huart);
/* Exported functions --------------------------------------------------------*/
 
HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
{
  /* Check the UART handle allocation */
  if (huart == NULL)
  {
    return HAL_ERROR;
  }
 
  if (huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
  {
    /* Check the parameters */
    assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
  }
  else
  {
    /* Check the parameters */
    assert_param(IS_UART_INSTANCE(huart->Instance));
  }
 
  if (huart->gState == HAL_UART_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    huart->Lock = HAL_UNLOCKED;
 
#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;
 
  __HAL_UART_DISABLE(huart);
 
  /* Set the UART Communication parameters */
  if (UART_SetConfig(huart) == HAL_ERROR)
  {
    return HAL_ERROR;
  }
 
  if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
  {
    UART_AdvFeatureConfig(huart);
  }
 
  /* In asynchronous mode, the following bits must be kept cleared:
  - LINEN 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));
 
  __HAL_UART_ENABLE(huart);
 
  /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
  return (UART_CheckIdleState(huart));
}
 
HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
{
  /* Check the UART handle allocation */
  if (huart == NULL)
  {
    return HAL_ERROR;
  }
 
  /* Check UART instance */
  assert_param(IS_UART_HALFDUPLEX_INSTANCE(huart->Instance));
 
  if (huart->gState == HAL_UART_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    huart->Lock = HAL_UNLOCKED;
 
#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;
 
  __HAL_UART_DISABLE(huart);
 
  /* Set the UART Communication parameters */
  if (UART_SetConfig(huart) == HAL_ERROR)
  {
    return HAL_ERROR;
  }
 
  if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
  {
    UART_AdvFeatureConfig(huart);
  }
 
  /* In half-duplex mode, the following bits must be kept cleared:
  - LINEN 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);
 
  __HAL_UART_ENABLE(huart);
 
  /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
  return (UART_CheckIdleState(huart));
}
 
 
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));
 
  /* LIN mode limited to 16-bit oversampling only */
  if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
  {
    return HAL_ERROR;
  }
  /* LIN mode limited to 8-bit data length */
  if (huart->Init.WordLength != UART_WORDLENGTH_8B)
  {
    return HAL_ERROR;
  }
 
  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;
 
  __HAL_UART_DISABLE(huart);
 
  /* Set the UART Communication parameters */
  if (UART_SetConfig(huart) == HAL_ERROR)
  {
    return HAL_ERROR;
  }
 
  if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
  {
    UART_AdvFeatureConfig(huart);
  }
 
  /* In LIN 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_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. */
  MODIFY_REG(huart->Instance->CR2, USART_CR2_LBDL, BreakDetectLength);
 
  __HAL_UART_ENABLE(huart);
 
  /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
  return (UART_CheckIdleState(huart));
}
 
 
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
{
  /* Check the UART handle allocation */
  if (huart == NULL)
  {
    return HAL_ERROR;
  }
 
  /* Check the wake up method parameter */
  assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
 
  if (huart->gState == HAL_UART_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    huart->Lock = HAL_UNLOCKED;
 
#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;
 
  __HAL_UART_DISABLE(huart);
 
  /* Set the UART Communication parameters */
  if (UART_SetConfig(huart) == HAL_ERROR)
  {
    return HAL_ERROR;
  }
 
  if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
  {
    UART_AdvFeatureConfig(huart);
  }
 
  /* In multiprocessor mode, the following bits must be kept cleared:
  - LINEN 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));
 
  if (WakeUpMethod == UART_WAKEUPMETHOD_ADDRESSMARK)
  {
    /* If address mark wake up method is chosen, set the USART address node */
    MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, ((uint32_t)Address << UART_CR2_ADDRESS_LSB_POS));
  }
 
  /* Set the wake up method by setting the WAKE bit in the CR1 register */
  MODIFY_REG(huart->Instance->CR1, USART_CR1_WAKE, WakeUpMethod);
 
  __HAL_UART_ENABLE(huart);
 
  /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */
  return (UART_CheckIdleState(huart));
}
 
 
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;
 
  __HAL_UART_DISABLE(huart);
 
  huart->Instance->CR1 = 0x0U;
  huart->Instance->CR2 = 0x0U;
  huart->Instance->CR3 = 0x0U;
 
#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;
 
  __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 can 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 can 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)
  {
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    return HAL_ERROR;
  }
 
  __HAL_LOCK(huart);
 
  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_WAKEUP_CB_ID :
        huart->WakeupCallback = pCallback;
        break;
 
 
      case HAL_UART_MSPINIT_CB_ID :
        huart->MspInitCallback = pCallback;
        break;
 
      case HAL_UART_MSPDEINIT_CB_ID :
        huart->MspDeInitCallback = pCallback;
        break;
 
      default :
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
        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 :
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    status =  HAL_ERROR;
  }
 
  __HAL_UNLOCK(huart);
 
  return status;
}
 
HAL_StatusTypeDef HAL_UART_UnRegisterCallback(UART_HandleTypeDef *huart, HAL_UART_CallbackIDTypeDef CallbackID)
{
  HAL_StatusTypeDef status = HAL_OK;
 
  __HAL_LOCK(huart);
 
  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;
 
#if defined(USART_CR1_UESM)
      case HAL_UART_WAKEUP_CB_ID :
        huart->WakeupCallback = HAL_UARTEx_WakeupCallback;                     /* Legacy weak WakeupCallback            */
        break;
 
#endif /* USART_CR1_UESM */
      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 :
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
        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 :
        huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
        status =  HAL_ERROR;
        break;
    }
  }
  else
  {
    huart->ErrorCode |= HAL_UART_ERROR_INVALID_CALLBACK;
 
    status =  HAL_ERROR;
  }
 
  __HAL_UNLOCK(huart);
 
  return status;
}
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
 
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
  uint8_t  *pdata8bits;
  uint16_t *pdata16bits;
  uint32_t tickstart;
 
  /* Check that a Tx process is not already ongoing */
  if (huart->gState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return  HAL_ERROR;
    }
 
    __HAL_LOCK(huart);
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->gState = HAL_UART_STATE_BUSY_TX;
 
    /* Init tickstart for timeout managment*/
    tickstart = HAL_GetTick();
 
    huart->TxXferSize  = Size;
    huart->TxXferCount = Size;
 
    /* 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 = (uint16_t *) pData;
    }
    else
    {
      pdata8bits  = pData;
      pdata16bits = NULL;
    }
 
    __HAL_UNLOCK(huart);
 
    while (huart->TxXferCount > 0U)
    {
      if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK)
      {
        return HAL_TIMEOUT;
      }
      if (pdata8bits == NULL)
      {
        huart->Instance->TDR = (uint16_t)(*pdata16bits & 0x01FFU);
        pdata16bits++;
      }
      else
      {
        huart->Instance->TDR = (uint8_t)(*pdata8bits & 0xFFU);
        pdata8bits++;
      }
      huart->TxXferCount--;
    }
 
    if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK)
    {
      return HAL_TIMEOUT;
    }
 
    /* At end of Tx process, restore huart->gState to Ready */
    huart->gState = HAL_UART_STATE_READY;
 
    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;
  uint16_t uhMask;
  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;
    }
 
    __HAL_LOCK(huart);
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->RxState = HAL_UART_STATE_BUSY_RX;
 
    /* Init tickstart for timeout managment*/
    tickstart = HAL_GetTick();
 
    huart->RxXferSize  = Size;
    huart->RxXferCount = Size;
 
    /* Computation of UART mask to apply to RDR register */
    UART_MASK_COMPUTATION(huart);
    uhMask = huart->Mask;
 
    /* 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;
    }
 
    __HAL_UNLOCK(huart);
 
    /* as long as data have to be received */
    while (huart->RxXferCount > 0U)
    {
      if (UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK)
      {
        return HAL_TIMEOUT;
      }
      if (pdata8bits == NULL)
      {
        *pdata16bits = (uint16_t)(huart->Instance->RDR & uhMask);
        pdata16bits++;
      }
      else
      {
        *pdata8bits = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
        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, 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;
    }
 
    __HAL_LOCK(huart);
 
    huart->pTxBuffPtr  = pData;
    huart->TxXferSize  = Size;
    huart->TxXferCount = Size;
    huart->TxISR       = NULL;
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->gState = HAL_UART_STATE_BUSY_TX;
 
    /* Set the Tx ISR function pointer according to the data word length */
    if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
    {
      huart->TxISR = UART_TxISR_16BIT;
    }
    else
    {
      huart->TxISR = UART_TxISR_8BIT;
    }
 
    __HAL_UNLOCK(huart);
 
    /* Enable the Transmit Data Register Empty interrupt */
    SET_BIT(huart->Instance->CR1, USART_CR1_TXEIE);
 
    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;
    }
 
    __HAL_LOCK(huart);
 
    huart->pRxBuffPtr  = pData;
    huart->RxXferSize  = Size;
    huart->RxXferCount = Size;
    huart->RxISR       = NULL;
 
    /* Computation of UART mask to apply to RDR register */
    UART_MASK_COMPUTATION(huart);
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->RxState = HAL_UART_STATE_BUSY_RX;
 
    /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
    SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
    /* Set the Rx ISR function pointer according to the data word length */
    if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
    {
      huart->RxISR = UART_RxISR_16BIT;
    }
    else
    {
      huart->RxISR = UART_RxISR_8BIT;
    }
 
    __HAL_UNLOCK(huart);
 
    /* Enable the UART Parity Error interrupt and Data Register Not Empty interrupt */
    SET_BIT(huart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE);
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
  /* Check that a Tx process is not already ongoing */
  if (huart->gState == HAL_UART_STATE_READY)
  {
    if ((pData == NULL) || (Size == 0U))
    {
      return HAL_ERROR;
    }
 
    __HAL_LOCK(huart);
 
    huart->pTxBuffPtr  = pData;
    huart->TxXferSize  = Size;
    huart->TxXferCount = Size;
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->gState = HAL_UART_STATE_BUSY_TX;
 
    if (huart->hdmatx != NULL)
    {
      /* Set the UART DMA transfer complete callback */
      huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
 
      /* Set the UART DMA Half transfer complete callback */
      huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
 
      /* Set the DMA error callback */
      huart->hdmatx->XferErrorCallback = UART_DMAError;
 
      /* Set the DMA abort callback */
      huart->hdmatx->XferAbortCallback = NULL;
 
      /* Enable the UART transmit DMA channel */
      if (HAL_DMA_Start_IT(huart->hdmatx, (uint32_t)huart->pTxBuffPtr, (uint32_t)&huart->Instance->TDR, Size) != HAL_OK)
      {
        /* Set error code to DMA */
        huart->ErrorCode = HAL_UART_ERROR_DMA;
 
        __HAL_UNLOCK(huart);
 
        /* Restore huart->gState to ready */
        huart->gState = HAL_UART_STATE_READY;
 
        return HAL_ERROR;
      }
    }
    /* Clear the TC flag in the ICR register */
    __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_TCF);
 
    __HAL_UNLOCK(huart);
 
    /* Enable the DMA transfer for transmit request by setting the DMAT bit
    in the UART CR3 register */
    SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_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;
    }
 
    __HAL_LOCK(huart);
 
    huart->pRxBuffPtr = pData;
    huart->RxXferSize = Size;
 
    huart->ErrorCode = HAL_UART_ERROR_NONE;
    huart->RxState = HAL_UART_STATE_BUSY_RX;
 
    if (huart->hdmarx != NULL)
    {
      /* Set the UART DMA transfer complete callback */
      huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
 
      /* Set the UART DMA Half transfer complete callback */
      huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
 
      /* Set the DMA error callback */
      huart->hdmarx->XferErrorCallback = UART_DMAError;
 
      /* Set the DMA abort callback */
      huart->hdmarx->XferAbortCallback = NULL;
 
      /* Enable the DMA channel */
      if (HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->RDR, (uint32_t)huart->pRxBuffPtr, Size) != HAL_OK)
      {
        /* Set error code to DMA */
        huart->ErrorCode = HAL_UART_ERROR_DMA;
 
        __HAL_UNLOCK(huart);
 
        /* Restore huart->gState to ready */
        huart->gState = HAL_UART_STATE_READY;
 
        return HAL_ERROR;
      }
    }
    __HAL_UNLOCK(huart);
 
    /* Enable the UART Parity Error Interrupt */
    SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
 
    /* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
    SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
    /* Enable the DMA transfer for the receiver request by setting the DMAR bit
    in the UART CR3 register */
    SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
{
  const HAL_UART_StateTypeDef gstate = huart->gState;
  const HAL_UART_StateTypeDef rxstate = huart->RxState;
 
  __HAL_LOCK(huart);
 
  if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) &&
      (gstate == HAL_UART_STATE_BUSY_TX))
  {
    /* Disable the UART DMA Tx request */
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  }
  if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) &&
      (rxstate == HAL_UART_STATE_BUSY_RX))
  {
    /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
    CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
    /* Disable the UART DMA Rx request */
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  }
 
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
{
  __HAL_LOCK(huart);
 
  if (huart->gState == HAL_UART_STATE_BUSY_TX)
  {
    /* Enable the UART DMA Tx request */
    SET_BIT(huart->Instance->CR3, USART_CR3_DMAT);
  }
  if (huart->RxState == HAL_UART_STATE_BUSY_RX)
  {
    /* Clear the Overrun flag before resuming the Rx transfer */
    __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
 
    /* Reenable PE and ERR (Frame error, noise error, overrun error) interrupts */
    SET_BIT(huart->Instance->CR1, USART_CR1_PEIE);
    SET_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
    /* Enable the UART DMA Rx request */
    SET_BIT(huart->Instance->CR3, USART_CR3_DMAR);
  }
 
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
{
  /* The Lock is not implemented on this API to allow the user application
     to call the HAL UART API under callbacks HAL_UART_TxCpltCallback() / HAL_UART_RxCpltCallback() /
     HAL_UART_TxHalfCpltCallback / HAL_UART_RxHalfCpltCallback:
     indeed, when HAL_DMA_Abort() API is called, the DMA TX/RX Transfer or Half Transfer complete
     interrupt is generated if the DMA transfer interruption occurs at the middle or at the end of
     the stream and the corresponding call back is executed. */
 
  const HAL_UART_StateTypeDef gstate = huart->gState;
  const HAL_UART_StateTypeDef rxstate = huart->RxState;
 
  /* Stop UART DMA Tx request if ongoing */
  if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) &&
      (gstate == HAL_UART_STATE_BUSY_TX))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx channel */
    if (huart->hdmatx != 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;
        }
      }
    }
 
    UART_EndTxTransfer(huart);
  }
 
  /* Stop UART DMA Rx request if ongoing */
  if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) &&
      (rxstate == HAL_UART_STATE_BUSY_RX))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx channel */
    if (huart->hdmarx != 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;
        }
      }
    }
 
    UART_EndRxTransfer(huart);
  }
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_Abort(UART_HandleTypeDef *huart)
{
  /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
  CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* Disable the UART DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
    if (huart->hdmatx != NULL)
    {
      /* Set the UART DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      huart->hdmatx->XferAbortCallback = NULL;
 
      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))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
    if (huart->hdmarx != NULL)
    {
      /* Set the UART DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      huart->hdmarx->XferAbortCallback = NULL;
 
      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 = 0U;
  huart->RxXferCount = 0U;
 
  /* Clear the Error flags in the ICR register */
  __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
 
 
  /* Discard the received data */
  __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
 
  /* Restore huart->gState and huart->RxState to Ready */
  huart->gState  = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
 
  huart->ErrorCode = HAL_UART_ERROR_NONE;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_AbortTransmit(UART_HandleTypeDef *huart)
{
  /* Disable TXEIE and TCIE interrupts */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
 
  /* Disable the UART DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx channel : use blocking DMA Abort API (no callback) */
    if (huart->hdmatx != NULL)
    {
      /* Set the UART DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      huart->hdmatx->XferAbortCallback = NULL;
 
      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 = 0U;
 
 
  /* 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 */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* Disable the UART DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx channel : use blocking DMA Abort API (no callback) */
    if (huart->hdmarx != NULL)
    {
      /* Set the UART DMA Abort callback to Null.
         No call back execution at end of DMA abort procedure */
      huart->hdmarx->XferAbortCallback = NULL;
 
      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 = 0U;
 
  /* Clear the Error flags in the ICR register */
  __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
 
  /* Discard the received data */
  __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
 
  /* Restore huart->RxState to Ready */
  huart->RxState = HAL_UART_STATE_READY;
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_UART_Abort_IT(UART_HandleTypeDef *huart)
{
  uint32_t abortcplt = 1U;
 
  /* Disable interrupts */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE));
  CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* If DMA Tx and/or DMA Rx Handles are associated to UART Handle, DMA Abort complete callbacks should be initialised
     before any call to DMA Abort functions */
  /* DMA Tx Handle is valid */
  if (huart->hdmatx != NULL)
  {
    /* Set DMA Abort Complete callback if UART DMA Tx request if enabled.
       Otherwise, set it to NULL */
    if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
    {
      huart->hdmatx->XferAbortCallback = UART_DMATxAbortCallback;
    }
    else
    {
      huart->hdmatx->XferAbortCallback = NULL;
    }
  }
  /* DMA Rx Handle is valid */
  if (huart->hdmarx != NULL)
  {
    /* Set DMA Abort Complete callback if UART DMA Rx request if enabled.
       Otherwise, set it to NULL */
    if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
    {
      huart->hdmarx->XferAbortCallback = UART_DMARxAbortCallback;
    }
    else
    {
      huart->hdmarx->XferAbortCallback = NULL;
    }
  }
 
  /* Disable the UART DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
  {
    /* Disable DMA Tx at UART level */
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
    if (huart->hdmatx != NULL)
    {
      /* UART Tx DMA Abort callback has already been initialised :
         will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
 
      /* Abort DMA TX */
      if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
      {
        huart->hdmatx->XferAbortCallback = NULL;
      }
      else
      {
        abortcplt = 0U;
      }
    }
  }
 
  /* Disable the UART DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
    if (huart->hdmarx != NULL)
    {
      /* UART Rx DMA Abort callback has already been initialised :
         will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
 
      /* Abort DMA RX */
      if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
      {
        huart->hdmarx->XferAbortCallback = NULL;
        abortcplt = 1U;
      }
      else
      {
        abortcplt = 0U;
      }
    }
  }
 
  /* if no DMA abort complete callback execution is required => call user Abort Complete callback */
  if (abortcplt == 1U)
  {
    /* Reset Tx and Rx transfer counters */
    huart->TxXferCount = 0U;
    huart->RxXferCount = 0U;
 
    /* Clear ISR function pointers */
    huart->RxISR = NULL;
    huart->TxISR = NULL;
 
    /* Reset errorCode */
    huart->ErrorCode = HAL_UART_ERROR_NONE;
 
    /* Clear the Error flags in the ICR register */
    __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
 
 
    /* Discard the received data */
    __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
 
    /* Restore huart->gState and huart->RxState to Ready */
    huart->gState  = HAL_UART_STATE_READY;
    huart->RxState = HAL_UART_STATE_READY;
 
    /* As no DMA to be aborted, call directly user Abort complete callback */
#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 interrupts */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
 
  /* Disable the UART DMA Tx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Abort the UART DMA Tx channel : use non blocking DMA Abort API (callback) */
    if (huart->hdmatx != NULL)
    {
      /* Set the UART DMA Abort callback :
         will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
      huart->hdmatx->XferAbortCallback = UART_DMATxOnlyAbortCallback;
 
      /* Abort DMA TX */
      if (HAL_DMA_Abort_IT(huart->hdmatx) != HAL_OK)
      {
        /* Call Directly huart->hdmatx->XferAbortCallback function in case of error */
        huart->hdmatx->XferAbortCallback(huart->hdmatx);
      }
    }
    else
    {
      /* Reset Tx transfer counter */
      huart->TxXferCount = 0U;
 
      /* Clear TxISR function pointers */
      huart->TxISR = NULL;
 
      /* 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 = 0U;
 
    /* Clear TxISR function pointers */
    huart->TxISR = NULL;
 
 
    /* 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 */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* Disable the UART DMA Rx request if enabled */
  if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
  {
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* Abort the UART DMA Rx channel : use non blocking DMA Abort API (callback) */
    if (huart->hdmarx != NULL)
    {
      /* Set the UART DMA Abort callback :
         will lead to call HAL_UART_AbortCpltCallback() at end of DMA abort procedure */
      huart->hdmarx->XferAbortCallback = UART_DMARxOnlyAbortCallback;
 
      /* Abort DMA RX */
      if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
      {
        /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
        huart->hdmarx->XferAbortCallback(huart->hdmarx);
      }
    }
    else
    {
      /* Reset Rx transfer counter */
      huart->RxXferCount = 0U;
 
      /* Clear RxISR function pointer */
      huart->pRxBuffPtr = NULL;
 
      /* Clear the Error flags in the ICR register */
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
 
      /* Discard the received data */
      __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
 
      /* Restore huart->RxState to Ready */
      huart->RxState = 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 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 = 0U;
 
    /* Clear RxISR function pointer */
    huart->pRxBuffPtr = NULL;
 
    /* Clear the Error flags in the ICR register */
    __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
 
    /* Restore huart->RxState to Ready */
    huart->RxState = HAL_UART_STATE_READY;
 
    /* As no DMA to be aborted, call directly user Abort complete callback */
#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->ISR);
  uint32_t cr1its     = READ_REG(huart->Instance->CR1);
  uint32_t cr3its     = READ_REG(huart->Instance->CR3);
 
  uint32_t errorflags;
  uint32_t errorcode;
 
  /* If no error occurs */
  errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE | USART_ISR_RTOF));
  if (errorflags == 0U)
  {
    /* UART in mode Receiver ---------------------------------------------------*/
    if (((isrflags & USART_ISR_RXNE) != 0U)
        && ((cr1its & USART_CR1_RXNEIE) != 0U))
    {
      if (huart->RxISR != NULL)
      {
        huart->RxISR(huart);
      }
      return;
    }
  }
 
  /* If some errors occur */
  if ((errorflags != 0U)
      && (((cr3its & USART_CR3_EIE) != 0U)
          || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != 0U)))
  {
    /* UART parity error interrupt occurred -------------------------------------*/
    if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF);
 
      huart->ErrorCode |= HAL_UART_ERROR_PE;
    }
 
    /* UART frame error interrupt occurred --------------------------------------*/
    if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF);
 
      huart->ErrorCode |= HAL_UART_ERROR_FE;
    }
 
    /* UART noise error interrupt occurred --------------------------------------*/
    if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF);
 
      huart->ErrorCode |= HAL_UART_ERROR_NE;
    }
 
    /* UART Over-Run interrupt occurred -----------------------------------------*/
    if (((isrflags & USART_ISR_ORE) != 0U)
        && (((cr1its & USART_CR1_RXNEIE) != 0U) ||
            ((cr3its & USART_CR3_EIE) != 0U)))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF);
 
      huart->ErrorCode |= HAL_UART_ERROR_ORE;
    }
 
    /* UART Receiver Timeout interrupt occurred ---------------------------------*/
    if (((isrflags & USART_ISR_RTOF) != 0U) && ((cr1its & USART_CR1_RTOIE) != 0U))
    {
      __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_RTOF);
 
      huart->ErrorCode |= HAL_UART_ERROR_RTO;
    }
 
    /* Call UART Error Call back function if need be ----------------------------*/
    if (huart->ErrorCode != HAL_UART_ERROR_NONE)
    {
      /* UART in mode Receiver --------------------------------------------------*/
      if (((isrflags & USART_ISR_RXNE) != 0U)
          && ((cr1its & USART_CR1_RXNEIE) != 0U))
      {
        if (huart->RxISR != NULL)
        {
          huart->RxISR(huart);
        }
      }
 
      /* If Error is to be considered as blocking :
          - Receiver Timeout error in Reception
          - Overrun error in Reception
          - any error occurs in DMA mode reception
      */
      errorcode = huart->ErrorCode;
      if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) ||
          ((errorcode & (HAL_UART_ERROR_RTO | HAL_UART_ERROR_ORE)) != 0U))
      {
        /* Blocking error : transfer is aborted
           Set the UART state ready to be able to start again the process,
           Disable Rx Interrupts, and disable Rx DMA request, if ongoing */
        UART_EndRxTransfer(huart);
 
        /* Disable the UART DMA Rx request if enabled */
        if (HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR))
        {
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
          /* Abort the UART DMA Rx channel */
          if (huart->hdmarx != NULL)
          {
            /* Set the UART DMA Abort callback :
               will lead to call HAL_UART_ErrorCallback() at end of DMA abort procedure */
            huart->hdmarx->XferAbortCallback = UART_DMAAbortOnError;
 
            /* Abort DMA RX */
            if (HAL_DMA_Abort_IT(huart->hdmarx) != HAL_OK)
            {
              /* Call Directly huart->hdmarx->XferAbortCallback function in case of error */
              huart->hdmarx->XferAbortCallback(huart->hdmarx);
            }
          }
          else
          {
            /* Call user error callback */
#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 */
#if defined(USART_CR1_UESM)
 
  /* UART wakeup from Stop mode interrupt occurred ---------------------------*/
  if (((isrflags & USART_ISR_WUF) != 0U) && ((cr3its & USART_CR3_WUFIE) != 0U))
  {
    __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_WUF);
 
    /* UART Rx state is not reset as a reception process might be ongoing.
       If UART handle state fields need to be reset to READY, this could be done in Wakeup callback */
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
    /* Call registered Wakeup Callback */
    huart->WakeupCallback(huart);
#else
    /* Call legacy weak Wakeup Callback */
    HAL_UARTEx_WakeupCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
    return;
  }
#endif /* USART_CR1_UESM */
 
  /* UART in mode Transmitter ------------------------------------------------*/
  if (((isrflags & USART_ISR_TXE) != 0U)
      && ((cr1its & USART_CR1_TXEIE) != 0U))
  {
    if (huart->TxISR != NULL)
    {
      huart->TxISR(huart);
    }
    return;
  }
 
  /* UART in mode Transmitter (transmission end) -----------------------------*/
  if (((isrflags & USART_ISR_TC) != 0U) && ((cr1its & USART_CR1_TCIE) != 0U))
  {
    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 can 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 can 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 can 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 can 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 can 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.
   */
}
 
#if defined(USART_CR1_UESM)
 
__weak void HAL_UARTEx_WakeupCallback(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_UARTEx_WakeupCallback can be implemented in the user file.
   */
}
 
#endif /* USART_CR1_UESM */
 
void HAL_UART_ReceiverTimeout_Config(UART_HandleTypeDef *huart, uint32_t TimeoutValue)
{
  assert_param(IS_UART_RECEIVER_TIMEOUT_VALUE(TimeoutValue));
  MODIFY_REG(huart->Instance->RTOR, USART_RTOR_RTO, TimeoutValue);
}
 
HAL_StatusTypeDef HAL_UART_EnableReceiverTimeout(UART_HandleTypeDef *huart)
{
  if (huart->gState == HAL_UART_STATE_READY)
  {
    /* Process Locked */
    __HAL_LOCK(huart);
 
    huart->gState = HAL_UART_STATE_BUSY;
 
    /* Set the USART RTOEN bit */
    SET_BIT(huart->Instance->CR2, USART_CR2_RTOEN);
 
    huart->gState = HAL_UART_STATE_READY;
 
    /* Process Unlocked */
    __HAL_UNLOCK(huart);
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_UART_DisableReceiverTimeout(UART_HandleTypeDef *huart)
{
  if (huart->gState == HAL_UART_STATE_READY)
  {
    /* Process Locked */
    __HAL_LOCK(huart);
 
    huart->gState = HAL_UART_STATE_BUSY;
 
    /* Clear the USART RTOEN bit */
    CLEAR_BIT(huart->Instance->CR2, USART_CR2_RTOEN);
 
    huart->gState = HAL_UART_STATE_READY;
 
    /* Process Unlocked */
    __HAL_UNLOCK(huart);
 
    return HAL_OK;
  }
  else
  {
    return HAL_BUSY;
  }
}
 
HAL_StatusTypeDef HAL_MultiProcessor_EnableMuteMode(UART_HandleTypeDef *huart)
{
  __HAL_LOCK(huart);
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Enable USART mute mode by setting the MME bit in the CR1 register */
  SET_BIT(huart->Instance->CR1, USART_CR1_MME);
 
  huart->gState = HAL_UART_STATE_READY;
 
  return (UART_CheckIdleState(huart));
}
 
HAL_StatusTypeDef HAL_MultiProcessor_DisableMuteMode(UART_HandleTypeDef *huart)
{
  __HAL_LOCK(huart);
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Disable USART mute mode by clearing the MME bit in the CR1 register */
  CLEAR_BIT(huart->Instance->CR1, USART_CR1_MME);
 
  huart->gState = HAL_UART_STATE_READY;
 
  return (UART_CheckIdleState(huart));
}
 
void HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
{
  __HAL_UART_SEND_REQ(huart, UART_MUTE_MODE_REQUEST);
}
 
HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
{
  __HAL_LOCK(huart);
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Clear TE and RE bits */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
 
  /* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
  SET_BIT(huart->Instance->CR1, USART_CR1_TE);
 
  huart->gState = HAL_UART_STATE_READY;
 
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
{
  __HAL_LOCK(huart);
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Clear TE and RE bits */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
 
  /* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
  SET_BIT(huart->Instance->CR1, USART_CR1_RE);
 
  huart->gState = HAL_UART_STATE_READY;
 
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
 
HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart)
{
  /* Check the parameters */
  assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
 
  __HAL_LOCK(huart);
 
  huart->gState = HAL_UART_STATE_BUSY;
 
  /* Send break characters */
  __HAL_UART_SEND_REQ(huart, UART_SENDBREAK_REQUEST);
 
  huart->gState = HAL_UART_STATE_READY;
 
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
{
  uint32_t temp1;
  uint32_t temp2;
  temp1 = huart->gState;
  temp2 = huart->RxState;
 
  return (HAL_UART_StateTypeDef)(temp1 | temp2);
}
 
uint32_t HAL_UART_GetError(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  */
#if defined(USART_CR1_UESM)
  huart->WakeupCallback            = HAL_UARTEx_WakeupCallback;          /* Legacy weak WakeupCallback            */
#endif /* USART_CR1_UESM */
 
}
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
 
HAL_StatusTypeDef UART_SetConfig(UART_HandleTypeDef *huart)
{
  uint32_t tmpreg;
  uint16_t brrtemp;
  UART_ClockSourceTypeDef clocksource;
  uint32_t usartdiv                   = 0x00000000U;
  HAL_StatusTypeDef ret               = HAL_OK;
  uint32_t pclk;
 
  /* Check the parameters */
  assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
  assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
  assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
  assert_param(IS_UART_ONE_BIT_SAMPLE(huart->Init.OneBitSampling));
 
  assert_param(IS_UART_PARITY(huart->Init.Parity));
  assert_param(IS_UART_MODE(huart->Init.Mode));
  assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
  assert_param(IS_UART_OVERSAMPLING(huart->Init.OverSampling));
 
  /*-------------------------- USART CR1 Configuration -----------------------*/
  /* Clear M, PCE, PS, TE, RE and OVER8 bits and configure
  *  the UART Word Length, Parity, Mode and oversampling:
  *  set the M bits according to huart->Init.WordLength value
  *  set PCE and PS bits according to huart->Init.Parity value
  *  set TE and RE bits according to huart->Init.Mode value
  *  set OVER8 bit according to huart->Init.OverSampling value */
  tmpreg = (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling ;
  MODIFY_REG(huart->Instance->CR1, USART_CR1_FIELDS, tmpreg);
 
  /*-------------------------- USART CR2 Configuration -----------------------*/
  /* Configure the UART Stop Bits: Set STOP[13:12] bits according
  * to huart->Init.StopBits value */
  MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
 
  /*-------------------------- USART CR3 Configuration -----------------------*/
  /* Configure
  * - UART HardWare Flow Control: set CTSE and RTSE bits according
  *   to huart->Init.HwFlowCtl value
  * - one-bit sampling method versus three samples' majority rule according
  *   to huart->Init.OneBitSampling (not applicable to LPUART) */
  tmpreg = (uint32_t)huart->Init.HwFlowCtl;
 
  tmpreg |= huart->Init.OneBitSampling;
  MODIFY_REG(huart->Instance->CR3, USART_CR3_FIELDS, tmpreg);
 
 
  /*-------------------------- USART BRR Configuration -----------------------*/
  UART_GETCLOCKSOURCE(huart, clocksource);
 
  if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
  {
    switch (clocksource)
    {
      case UART_CLOCKSOURCE_PCLK1:
        pclk = HAL_RCC_GetPCLK1Freq();
        usartdiv = (uint16_t)(UART_DIV_SAMPLING8(pclk, huart->Init.BaudRate));
        break;
      case UART_CLOCKSOURCE_PCLK2:
        pclk = HAL_RCC_GetPCLK2Freq();
        usartdiv = (uint16_t)(UART_DIV_SAMPLING8(pclk, huart->Init.BaudRate));
        break;
      case UART_CLOCKSOURCE_HSI:
        usartdiv = (uint16_t)(UART_DIV_SAMPLING8(HSI_VALUE, huart->Init.BaudRate));
        break;
      case UART_CLOCKSOURCE_SYSCLK:
        pclk = HAL_RCC_GetSysClockFreq();
        usartdiv = (uint16_t)(UART_DIV_SAMPLING8(pclk, huart->Init.BaudRate));
        break;
      case UART_CLOCKSOURCE_LSE:
        usartdiv = (uint16_t)(UART_DIV_SAMPLING8(LSE_VALUE, huart->Init.BaudRate));
        break;
      default:
        ret = HAL_ERROR;
        break;
    }
 
    /* USARTDIV must be greater than or equal to 0d16 */
    if ((usartdiv >= UART_BRR_MIN) && (usartdiv <= UART_BRR_MAX))
    {
      brrtemp = (uint16_t)(usartdiv & 0xFFF0U);
      brrtemp |= (uint16_t)((usartdiv & (uint16_t)0x000FU) >> 1U);
      huart->Instance->BRR = brrtemp;
    }
    else
    {
      ret = HAL_ERROR;
    }
  }
  else
  {
    switch (clocksource)
    {
      case UART_CLOCKSOURCE_PCLK1:
        pclk = HAL_RCC_GetPCLK1Freq();
        usartdiv = (uint16_t)(UART_DIV_SAMPLING16(pclk, huart->Init.BaudRate));
        break;
      case UART_CLOCKSOURCE_PCLK2:
        pclk = HAL_RCC_GetPCLK2Freq();
        usartdiv = (uint16_t)(UART_DIV_SAMPLING16(pclk, huart->Init.BaudRate));
        break;
      case UART_CLOCKSOURCE_HSI:
        usartdiv = (uint16_t)(UART_DIV_SAMPLING16(HSI_VALUE, huart->Init.BaudRate));
        break;
      case UART_CLOCKSOURCE_SYSCLK:
        pclk = HAL_RCC_GetSysClockFreq();
        usartdiv = (uint16_t)(UART_DIV_SAMPLING16(pclk, huart->Init.BaudRate));
        break;
      case UART_CLOCKSOURCE_LSE:
        usartdiv = (uint16_t)(UART_DIV_SAMPLING16(LSE_VALUE, huart->Init.BaudRate));
        break;
      default:
        ret = HAL_ERROR;
        break;
    }
 
    /* USARTDIV must be greater than or equal to 0d16 */
    if ((usartdiv >= UART_BRR_MIN) && (usartdiv <= UART_BRR_MAX))
    {
      huart->Instance->BRR = usartdiv;
    }
    else
    {
      ret = HAL_ERROR;
    }
  }
 
 
  /* Clear ISR function pointers */
  huart->RxISR = NULL;
  huart->TxISR = NULL;
 
  return ret;
}
 
void UART_AdvFeatureConfig(UART_HandleTypeDef *huart)
{
  /* Check whether the set of advanced features to configure is properly set */
  assert_param(IS_UART_ADVFEATURE_INIT(huart->AdvancedInit.AdvFeatureInit));
 
  /* if required, configure TX pin active level inversion */
  if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_TXINVERT_INIT))
  {
    assert_param(IS_UART_ADVFEATURE_TXINV(huart->AdvancedInit.TxPinLevelInvert));
    MODIFY_REG(huart->Instance->CR2, USART_CR2_TXINV, huart->AdvancedInit.TxPinLevelInvert);
  }
 
  /* if required, configure RX pin active level inversion */
  if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXINVERT_INIT))
  {
    assert_param(IS_UART_ADVFEATURE_RXINV(huart->AdvancedInit.RxPinLevelInvert));
    MODIFY_REG(huart->Instance->CR2, USART_CR2_RXINV, huart->AdvancedInit.RxPinLevelInvert);
  }
 
  /* if required, configure data inversion */
  if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DATAINVERT_INIT))
  {
    assert_param(IS_UART_ADVFEATURE_DATAINV(huart->AdvancedInit.DataInvert));
    MODIFY_REG(huart->Instance->CR2, USART_CR2_DATAINV, huart->AdvancedInit.DataInvert);
  }
 
  /* if required, configure RX/TX pins swap */
  if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_SWAP_INIT))
  {
    assert_param(IS_UART_ADVFEATURE_SWAP(huart->AdvancedInit.Swap));
    MODIFY_REG(huart->Instance->CR2, USART_CR2_SWAP, huart->AdvancedInit.Swap);
  }
 
  /* if required, configure RX overrun detection disabling */
  if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXOVERRUNDISABLE_INIT))
  {
    assert_param(IS_UART_OVERRUN(huart->AdvancedInit.OverrunDisable));
    MODIFY_REG(huart->Instance->CR3, USART_CR3_OVRDIS, huart->AdvancedInit.OverrunDisable);
  }
 
  /* if required, configure DMA disabling on reception error */
  if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DMADISABLEONERROR_INIT))
  {
    assert_param(IS_UART_ADVFEATURE_DMAONRXERROR(huart->AdvancedInit.DMADisableonRxError));
    MODIFY_REG(huart->Instance->CR3, USART_CR3_DDRE, huart->AdvancedInit.DMADisableonRxError);
  }
 
  /* if required, configure auto Baud rate detection scheme */
  if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_AUTOBAUDRATE_INIT))
  {
    assert_param(IS_USART_AUTOBAUDRATE_DETECTION_INSTANCE(huart->Instance));
    assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATE(huart->AdvancedInit.AutoBaudRateEnable));
    MODIFY_REG(huart->Instance->CR2, USART_CR2_ABREN, huart->AdvancedInit.AutoBaudRateEnable);
    /* set auto Baudrate detection parameters if detection is enabled */
    if (huart->AdvancedInit.AutoBaudRateEnable == UART_ADVFEATURE_AUTOBAUDRATE_ENABLE)
    {
      assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATEMODE(huart->AdvancedInit.AutoBaudRateMode));
      MODIFY_REG(huart->Instance->CR2, USART_CR2_ABRMODE, huart->AdvancedInit.AutoBaudRateMode);
    }
  }
 
  /* if required, configure MSB first on communication line */
  if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_MSBFIRST_INIT))
  {
    assert_param(IS_UART_ADVFEATURE_MSBFIRST(huart->AdvancedInit.MSBFirst));
    MODIFY_REG(huart->Instance->CR2, USART_CR2_MSBFIRST, huart->AdvancedInit.MSBFirst);
  }
}
 
HAL_StatusTypeDef UART_CheckIdleState(UART_HandleTypeDef *huart)
{
  uint32_t tickstart;
 
  /* Initialize the UART ErrorCode */
  huart->ErrorCode = HAL_UART_ERROR_NONE;
 
  /* Init tickstart for timeout managment*/
  tickstart = HAL_GetTick();
 
  /* Check if the Transmitter is enabled */
  if ((huart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
  {
    /* Wait until TEACK flag is set */
    if (UART_WaitOnFlagUntilTimeout(huart, USART_ISR_TEACK, RESET, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
    {
      /* Timeout occurred */
      return HAL_TIMEOUT;
    }
  }
#if defined(USART_ISR_REACK)
 
  /* Check if the Receiver is enabled */
  if ((huart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
  {
    /* Wait until REACK flag is set */
    if (UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, tickstart, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
    {
      /* Timeout occurred */
      return HAL_TIMEOUT;
    }
  }
#endif
 
  /* Initialize the UART State */
  huart->gState = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
 
  __HAL_UNLOCK(huart);
 
  return HAL_OK;
}
 
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))
      {
        /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
        CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE));
        CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
        huart->gState = HAL_UART_STATE_READY;
        huart->RxState = HAL_UART_STATE_READY;
 
        __HAL_UNLOCK(huart);
 
        return HAL_TIMEOUT;
      }
 
      if (READ_BIT(huart->Instance->CR1, USART_CR1_RE) != 0U)
      {
        if (__HAL_UART_GET_FLAG(huart, UART_FLAG_RTOF) == SET)
        {
          /* Clear Receiver Timeout flag*/
          __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_RTOF);
          
          /* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
          CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE));
          CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
          huart->gState = HAL_UART_STATE_READY;
          huart->RxState = HAL_UART_STATE_READY;
          huart->ErrorCode = HAL_UART_ERROR_RTO;
          
          /* Process Unlocked */
          __HAL_UNLOCK(huart);
          
          return HAL_TIMEOUT;
        }
      }
    }
  }
  return HAL_OK;
}
 
 
static void UART_EndTxTransfer(UART_HandleTypeDef *huart)
{
  /* Disable TXEIE and TCIE interrupts */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE));
 
  /* At end of Tx process, restore huart->gState to Ready */
  huart->gState = HAL_UART_STATE_READY;
}
 
 
static void UART_EndRxTransfer(UART_HandleTypeDef *huart)
{
  /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */
  CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
  CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
  /* At end of Rx process, restore huart->RxState to Ready */
  huart->RxState = HAL_UART_STATE_READY;
 
  /* Reset RxIsr function pointer */
  huart->RxISR = NULL;
}
 
 
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
 
  /* DMA Normal mode */
  if (hdma->Init.Mode != DMA_CIRCULAR)
  {
    huart->TxXferCount = 0U;
 
    /* Disable the DMA transfer for transmit request by resetting the DMAT bit
       in the UART CR3 register */
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAT);
 
    /* Enable the UART Transmit Complete Interrupt */
    SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
  }
  /* DMA Circular mode */
  else
  {
#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 *)(hdma->Parent);
 
#if (USE_HAL_UART_REGISTER_CALLBACKS == 1)
  /*Call registered Tx Half complete callback*/
  huart->TxHalfCpltCallback(huart);
#else
  /*Call legacy weak Tx Half complete callback*/
  HAL_UART_TxHalfCpltCallback(huart);
#endif /* USE_HAL_UART_REGISTER_CALLBACKS */
}
 
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
 
  /* DMA Normal mode */
  if (hdma->Init.Mode != DMA_CIRCULAR)
  {
    huart->RxXferCount = 0U;
 
    /* Disable PE and ERR (Frame error, noise error, overrun error) interrupts */
    CLEAR_BIT(huart->Instance->CR1, USART_CR1_PEIE);
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
    /* Disable the DMA transfer for the receiver request by resetting the DMAR bit
       in the UART CR3 register */
    CLEAR_BIT(huart->Instance->CR3, USART_CR3_DMAR);
 
    /* At end of Rx process, restore huart->RxState to Ready */
    huart->RxState = HAL_UART_STATE_READY;
  }
 
#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 *)(hdma->Parent);
 
#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)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
 
  const HAL_UART_StateTypeDef gstate = huart->gState;
  const HAL_UART_StateTypeDef rxstate = huart->RxState;
 
  /* Stop UART DMA Tx request if ongoing */
  if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAT)) &&
      (gstate == HAL_UART_STATE_BUSY_TX))
  {
    huart->TxXferCount = 0U;
    UART_EndTxTransfer(huart);
  }
 
  /* Stop UART DMA Rx request if ongoing */
  if ((HAL_IS_BIT_SET(huart->Instance->CR3, USART_CR3_DMAR)) &&
      (rxstate == HAL_UART_STATE_BUSY_RX))
  {
    huart->RxXferCount = 0U;
    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 void UART_DMAAbortOnError(DMA_HandleTypeDef *hdma)
{
  UART_HandleTypeDef *huart = (UART_HandleTypeDef *)(hdma->Parent);
  huart->RxXferCount = 0U;
  huart->TxXferCount = 0U;
 
#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 *)(hdma->Parent);
 
  huart->hdmatx->XferAbortCallback = NULL;
 
  /* Check if an Abort process is still ongoing */
  if (huart->hdmarx != NULL)
  {
    if (huart->hdmarx->XferAbortCallback != NULL)
    {
      return;
    }
  }
 
  /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
  huart->TxXferCount = 0U;
  huart->RxXferCount = 0U;
 
  /* Reset errorCode */
  huart->ErrorCode = HAL_UART_ERROR_NONE;
 
  /* Clear the Error flags in the ICR register */
  __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
 
 
  /* Restore huart->gState and huart->RxState to Ready */
  huart->gState  = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
 
  /* Call user Abort complete callback */
#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 *)(hdma->Parent);
 
  huart->hdmarx->XferAbortCallback = NULL;
 
  /* Check if an Abort process is still ongoing */
  if (huart->hdmatx != NULL)
  {
    if (huart->hdmatx->XferAbortCallback != NULL)
    {
      return;
    }
  }
 
  /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */
  huart->TxXferCount = 0U;
  huart->RxXferCount = 0U;
 
  /* Reset errorCode */
  huart->ErrorCode = HAL_UART_ERROR_NONE;
 
  /* Clear the Error flags in the ICR register */
  __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
 
  /* Discard the received data */
  __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
 
  /* Restore huart->gState and huart->RxState to Ready */
  huart->gState  = HAL_UART_STATE_READY;
  huart->RxState = HAL_UART_STATE_READY;
 
  /* Call user Abort complete callback */
#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 *)(hdma->Parent);
 
  huart->TxXferCount = 0U;
 
 
  /* 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 = 0U;
 
  /* Clear the Error flags in the ICR register */
  __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF | UART_CLEAR_NEF | UART_CLEAR_PEF | UART_CLEAR_FEF);
 
  /* Discard the received data */
  __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
 
  /* Restore huart->RxState to Ready */
  huart->RxState = HAL_UART_STATE_READY;
 
  /* 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 void UART_TxISR_8BIT(UART_HandleTypeDef *huart)
{
  /* Check that a Tx process is ongoing */
  if (huart->gState == HAL_UART_STATE_BUSY_TX)
  {
    if (huart->TxXferCount == 0U)
    {
      /* Disable the UART Transmit Data Register Empty Interrupt */
      CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE);
 
      /* Enable the UART Transmit Complete Interrupt */
      SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
    }
    else
    {
      huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr & (uint8_t)0xFF);
      huart->pTxBuffPtr++;
      huart->TxXferCount--;
    }
  }
}
 
static void UART_TxISR_16BIT(UART_HandleTypeDef *huart)
{
  uint16_t *tmp;
 
  /* Check that a Tx process is ongoing */
  if (huart->gState == HAL_UART_STATE_BUSY_TX)
  {
    if (huart->TxXferCount == 0U)
    {
      /* Disable the UART Transmit Data Register Empty Interrupt */
      CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE);
 
      /* Enable the UART Transmit Complete Interrupt */
      SET_BIT(huart->Instance->CR1, USART_CR1_TCIE);
    }
    else
    {
      tmp = (uint16_t *) huart->pTxBuffPtr;
      huart->Instance->TDR = (((uint32_t)(*tmp)) & 0x01FFUL);
      huart->pTxBuffPtr += 2U;
      huart->TxXferCount--;
    }
  }
}
 
 
static void UART_EndTransmit_IT(UART_HandleTypeDef *huart)
{
  /* Disable the UART Transmit Complete Interrupt */
  CLEAR_BIT(huart->Instance->CR1, USART_CR1_TCIE);
 
  /* Tx process is ended, restore huart->gState to Ready */
  huart->gState = HAL_UART_STATE_READY;
 
  /* Cleat TxISR function pointer */
  huart->TxISR = NULL;
 
#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_RxISR_8BIT(UART_HandleTypeDef *huart)
{
  uint16_t uhMask = huart->Mask;
  uint16_t  uhdata;
 
  /* Check that a Rx process is ongoing */
  if (huart->RxState == HAL_UART_STATE_BUSY_RX)
  {
    uhdata = (uint16_t) READ_REG(huart->Instance->RDR);
    *huart->pRxBuffPtr = (uint8_t)(uhdata & (uint8_t)uhMask);
    huart->pRxBuffPtr++;
    huart->RxXferCount--;
 
    if (huart->RxXferCount == 0U)
    {
      /* Disable the UART Parity Error Interrupt and RXNE interrupts */
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
 
      /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
      /* Rx process is completed, restore huart->RxState to Ready */
      huart->RxState = HAL_UART_STATE_READY;
 
      /* Clear RxISR function pointer */
      huart->RxISR = NULL;
 
#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 */
    }
  }
  else
  {
    /* Clear RXNE interrupt flag */
    __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
  }
}
 
static void UART_RxISR_16BIT(UART_HandleTypeDef *huart)
{
  uint16_t *tmp;
  uint16_t uhMask = huart->Mask;
  uint16_t  uhdata;
 
  /* Check that a Rx process is ongoing */
  if (huart->RxState == HAL_UART_STATE_BUSY_RX)
  {
    uhdata = (uint16_t) READ_REG(huart->Instance->RDR);
    tmp = (uint16_t *) huart->pRxBuffPtr ;
    *tmp = (uint16_t)(uhdata & uhMask);
    huart->pRxBuffPtr += 2U;
    huart->RxXferCount--;
 
    if (huart->RxXferCount == 0U)
    {
      /* Disable the UART Parity Error Interrupt and RXNE interrupt*/
      CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE));
 
      /* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
      CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE);
 
      /* Rx process is completed, restore huart->RxState to Ready */
      huart->RxState = HAL_UART_STATE_READY;
 
      /* Clear RxISR function pointer */
      huart->RxISR = NULL;
 
#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 */
    }
  }
  else
  {
    /* Clear RXNE interrupt flag */
    __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
  }
}
 
 
#endif /* HAL_UART_MODULE_ENABLED */
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/