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Dev Bugfx Empty buffer indication and stability improvments: The mux prototype used ASCII coding for channel selection while the current realization used real number (0...4) for addressing the mux. The UART read function uses the '0' to indicate an empty buffer element. The mux now loops back '0' used by channel selection causing the read function to process the data. As result data interrups are visible at the display. To avoid this another character has been defined indicate empty buffer locations. Beside this the functionality has been improved with regard to access speed and better recovery in case of transition failure.
author Ideenmodellierer
date Sun, 04 Jun 2023 21:59:26 +0200
parents c78bcbd5deda
children
line wrap: on
line source

/**
  ******************************************************************************
  * @file    stm32f4xx_hal_usart.h
  * @author  MCD Application Team
  * @brief   Header file of USART HAL module.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */ 

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F4xx_HAL_USART_H
#define __STM32F4xx_HAL_USART_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal_def.h"

/** @addtogroup STM32F4xx_HAL_Driver
  * @{
  */

/** @addtogroup USART
  * @{
  */ 

/* Exported types ------------------------------------------------------------*/ 
/** @defgroup USART_Exported_Types USART Exported Types
  * @{
  */
   
/** 
  * @brief USART Init Structure definition  
  */ 
typedef struct
{
  uint32_t BaudRate;                  /*!< This member configures the Usart communication baud rate.
                                           The baud rate is computed using the following formula:
                                           - IntegerDivider = ((PCLKx) / (8 * (husart->Init.BaudRate)))
                                           - FractionalDivider = ((IntegerDivider - ((uint32_t) IntegerDivider)) * 8) + 0.5 */

  uint32_t WordLength;                /*!< Specifies the number of data bits transmitted or received in a frame.
                                           This parameter can be a value of @ref USART_Word_Length */

  uint32_t StopBits;                  /*!< Specifies the number of stop bits transmitted.
                                           This parameter can be a value of @ref USART_Stop_Bits */

  uint32_t Parity;                   /*!< Specifies the parity mode.
                                           This parameter can be a value of @ref USART_Parity
                                           @note When parity is enabled, the computed parity is inserted
                                                 at the MSB position of the transmitted data (9th bit when
                                                 the word length is set to 9 data bits; 8th bit when the
                                                 word length is set to 8 data bits). */
 
  uint32_t Mode;                      /*!< Specifies whether the Receive or Transmit mode is enabled or disabled.
                                           This parameter can be a value of @ref USART_Mode */

  uint32_t CLKPolarity;               /*!< Specifies the steady state of the serial clock.
                                           This parameter can be a value of @ref USART_Clock_Polarity */

  uint32_t CLKPhase;                  /*!< Specifies the clock transition on which the bit capture is made.
                                           This parameter can be a value of @ref USART_Clock_Phase */

  uint32_t CLKLastBit;                /*!< Specifies whether the clock pulse corresponding to the last transmitted
                                           data bit (MSB) has to be output on the SCLK pin in synchronous mode.
                                           This parameter can be a value of @ref USART_Last_Bit */
}USART_InitTypeDef;

/** 
  * @brief HAL State structures definition  
  */ 
typedef enum
{
  HAL_USART_STATE_RESET             = 0x00U,    /*!< Peripheral is not yet Initialized   */
  HAL_USART_STATE_READY             = 0x01U,    /*!< Peripheral Initialized and ready for use */
  HAL_USART_STATE_BUSY              = 0x02U,    /*!< an internal process is ongoing */   
  HAL_USART_STATE_BUSY_TX           = 0x12U,    /*!< Data Transmission process is ongoing */ 
  HAL_USART_STATE_BUSY_RX           = 0x22U,    /*!< Data Reception process is ongoing */
  HAL_USART_STATE_BUSY_TX_RX        = 0x32U,    /*!< Data Transmission Reception process is ongoing */
  HAL_USART_STATE_TIMEOUT           = 0x03U,    /*!< Timeout state */
  HAL_USART_STATE_ERROR             = 0x04U     /*!< Error */      
}HAL_USART_StateTypeDef;

/** 
  * @brief  USART handle Structure definition  
  */  
typedef struct
{
  USART_TypeDef                 *Instance;        /* USART registers base address        */
  
  USART_InitTypeDef             Init;             /* Usart communication parameters      */
  
  uint8_t                       *pTxBuffPtr;      /* Pointer to Usart Tx transfer Buffer */
  
  uint16_t                      TxXferSize;       /* Usart Tx Transfer size              */
  
  __IO uint16_t                 TxXferCount;      /* Usart Tx Transfer Counter           */
  
  uint8_t                       *pRxBuffPtr;      /* Pointer to Usart Rx transfer Buffer */
  
  uint16_t                      RxXferSize;       /* Usart Rx Transfer size              */
  
  __IO uint16_t                 RxXferCount;      /* Usart Rx Transfer Counter           */  
  
  DMA_HandleTypeDef             *hdmatx;          /* Usart Tx DMA Handle parameters      */
    
  DMA_HandleTypeDef             *hdmarx;          /* Usart Rx DMA Handle parameters      */
  
  HAL_LockTypeDef                Lock;            /* Locking object                      */
  
  __IO HAL_USART_StateTypeDef    State;           /* Usart communication state           */
  
  __IO uint32_t                  ErrorCode;       /* USART Error code                    */

}USART_HandleTypeDef;
/**
  * @}
  */

/* Exported constants --------------------------------------------------------*/
/** @defgroup USART_Exported_Constants USART Exported Constants
  * @{
  */

/** @defgroup USART_Error_Code USART Error Code
  * @brief    USART Error Code 
  * @{
  */ 
#define HAL_USART_ERROR_NONE         0x00000000U   /*!< No error            */
#define HAL_USART_ERROR_PE           0x00000001U   /*!< Parity error        */
#define HAL_USART_ERROR_NE           0x00000002U   /*!< Noise error         */
#define HAL_USART_ERROR_FE           0x00000004U   /*!< Frame error         */
#define HAL_USART_ERROR_ORE          0x00000008U   /*!< Overrun error       */
#define HAL_USART_ERROR_DMA          0x00000010U   /*!< DMA transfer error  */
/**
  * @}
  */

/** @defgroup USART_Word_Length USART Word Length
  * @{
  */
#define USART_WORDLENGTH_8B                  0x00000000U
#define USART_WORDLENGTH_9B                  ((uint32_t)USART_CR1_M)
/**
  * @}
  */

/** @defgroup USART_Stop_Bits USART Number of Stop Bits
  * @{
  */
#define USART_STOPBITS_1                     0x00000000U
#define USART_STOPBITS_0_5                   ((uint32_t)USART_CR2_STOP_0)
#define USART_STOPBITS_2                     ((uint32_t)USART_CR2_STOP_1)
#define USART_STOPBITS_1_5                   ((uint32_t)(USART_CR2_STOP_0 | USART_CR2_STOP_1))
/**
  * @}
  */ 

/** @defgroup USART_Parity USART Parity
  * @{
  */ 
#define USART_PARITY_NONE                    0x00000000U
#define USART_PARITY_EVEN                    ((uint32_t)USART_CR1_PCE)
#define USART_PARITY_ODD                     ((uint32_t)(USART_CR1_PCE | USART_CR1_PS))
/**
  * @}
  */ 

/** @defgroup USART_Mode USART Mode
  * @{
  */ 
#define USART_MODE_RX                        ((uint32_t)USART_CR1_RE)
#define USART_MODE_TX                        ((uint32_t)USART_CR1_TE)
#define USART_MODE_TX_RX                     ((uint32_t)(USART_CR1_TE |USART_CR1_RE))
/**
  * @}
  */
    
/** @defgroup USART_Clock USART Clock
  * @{
  */ 
#define USART_CLOCK_DISABLE                 0x00000000U
#define USART_CLOCK_ENABLE                  ((uint32_t)USART_CR2_CLKEN)
/**
  * @}
  */ 

/** @defgroup USART_Clock_Polarity USART Clock Polarity
  * @{
  */
#define USART_POLARITY_LOW                   0x00000000U
#define USART_POLARITY_HIGH                  ((uint32_t)USART_CR2_CPOL)
/**
  * @}
  */ 

/** @defgroup USART_Clock_Phase  USART Clock Phase
  * @{
  */
#define USART_PHASE_1EDGE                    0x00000000U
#define USART_PHASE_2EDGE                    ((uint32_t)USART_CR2_CPHA)
/**
  * @}
  */

/** @defgroup USART_Last_Bit  USART Last Bit
  * @{
  */
#define USART_LASTBIT_DISABLE                0x00000000U
#define USART_LASTBIT_ENABLE                 ((uint32_t)USART_CR2_LBCL)
/**
  * @}
  */

/** @defgroup USART_NACK_State USART NACK State
  * @{
  */
#define USART_NACK_ENABLE           ((uint32_t)USART_CR3_NACK)
#define USART_NACK_DISABLE          0x00000000U
/**
  * @}
  */

/** @defgroup USART_Flags USART Flags
  *        Elements values convention: 0xXXXX
  *           - 0xXXXX  : Flag mask in the SR register
  * @{
  */
#define USART_FLAG_TXE                       0x00000080U
#define USART_FLAG_TC                        0x00000040U
#define USART_FLAG_RXNE                      0x00000020U
#define USART_FLAG_IDLE                      0x00000010U
#define USART_FLAG_ORE                       0x00000008U
#define USART_FLAG_NE                        0x00000004U
#define USART_FLAG_FE                        0x00000002U
#define USART_FLAG_PE                        0x00000001U
/**
  * @}
  */

/** @defgroup USART_Interrupt_definition USART Interrupts Definition
  *        Elements values convention: 0xY000XXXX
  *           - XXXX  : Interrupt mask in the XX register
  *           - Y  : Interrupt source register (2bits)
  *                 - 01: CR1 register
  *                 - 10: CR2 register
  *                 - 11: CR3 register
  *
  * @{
  */  
#define USART_IT_PE                     ((uint32_t)(USART_CR1_REG_INDEX << 28U | USART_CR1_PEIE))
#define USART_IT_TXE                    ((uint32_t)(USART_CR1_REG_INDEX << 28U | USART_CR1_TXEIE))
#define USART_IT_TC                     ((uint32_t)(USART_CR1_REG_INDEX << 28U | USART_CR1_TCIE))
#define USART_IT_RXNE                   ((uint32_t)(USART_CR1_REG_INDEX << 28U | USART_CR1_RXNEIE))
#define USART_IT_IDLE                   ((uint32_t)(USART_CR1_REG_INDEX << 28U | USART_CR1_IDLEIE))

#define USART_IT_LBD                    ((uint32_t)(USART_CR2_REG_INDEX << 28U | USART_CR2_LBDIE))

#define USART_IT_CTS                    ((uint32_t)(USART_CR3_REG_INDEX << 28U | USART_CR3_CTSIE))
#define USART_IT_ERR                    ((uint32_t)(USART_CR3_REG_INDEX << 28U | USART_CR3_EIE))
/**
  * @}
  */

/**
  * @}
  */

/* Exported macro ------------------------------------------------------------*/
/** @defgroup USART_Exported_Macros USART Exported Macros
  * @{
  */

/** @brief Reset USART handle state
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @retval None
  */
#define __HAL_USART_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_USART_STATE_RESET)

/** @brief  Checks whether the specified Smartcard flag is set or not.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @param  __FLAG__ specifies the flag to check.
  *        This parameter can be one of the following values:
  *            @arg USART_FLAG_TXE:  Transmit data register empty flag
  *            @arg USART_FLAG_TC:   Transmission Complete flag
  *            @arg USART_FLAG_RXNE: Receive data register not empty flag
  *            @arg USART_FLAG_IDLE: Idle Line detection flag
  *            @arg USART_FLAG_ORE:  Overrun Error flag
  *            @arg USART_FLAG_NE:   Noise Error flag
  *            @arg USART_FLAG_FE:   Framing Error flag
  *            @arg USART_FLAG_PE:   Parity Error flag
  * @retval The new state of __FLAG__ (TRUE or FALSE).
  */
#define __HAL_USART_GET_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->SR & (__FLAG__)) == (__FLAG__))

/** @brief  Clears the specified Smartcard pending flags.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @param  __FLAG__ specifies the flag to check.
  *          This parameter can be any combination of the following values:
  *            @arg USART_FLAG_TC:   Transmission Complete flag.
  *            @arg USART_FLAG_RXNE: Receive data register not empty flag.
  *   
  * @note   PE (Parity error), FE (Framing error), NE (Noise error), ORE (Overrun 
  *          error) and IDLE (Idle line detected) flags are cleared by software 
  *          sequence: a read operation to USART_SR register followed by a read
  *          operation to USART_DR register.
  * @note   RXNE flag can be also cleared by a read to the USART_DR register.
  * @note   TC flag can be also cleared by software sequence: a read operation to 
  *          USART_SR register followed by a write operation to USART_DR register.
  * @note   TXE flag is cleared only by a write to the USART_DR register.
  *   
  * @retval None
  */
#define __HAL_USART_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->SR = ~(__FLAG__))

/** @brief  Clear the USART PE pending flag.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @retval None
  */
#define __HAL_USART_CLEAR_PEFLAG(__HANDLE__)    \
  do{                                           \
    __IO uint32_t tmpreg = 0x00U;                \
    tmpreg = (__HANDLE__)->Instance->SR;        \
    tmpreg = (__HANDLE__)->Instance->DR;        \
    UNUSED(tmpreg);                             \
  } while(0U)
                                               
/** @brief  Clear the USART FE pending flag.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @retval None
  */
#define __HAL_USART_CLEAR_FEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__)

/** @brief  Clear the USART NE pending flag.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @retval None
  */
#define __HAL_USART_CLEAR_NEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__)

/** @brief  Clear the UART ORE pending flag.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @retval None
  */
#define __HAL_USART_CLEAR_OREFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__)

/** @brief  Clear the USART IDLE pending flag.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @retval None
  */
#define __HAL_USART_CLEAR_IDLEFLAG(__HANDLE__) __HAL_USART_CLEAR_PEFLAG(__HANDLE__)

/** @brief  Enables or disables the specified USART interrupts.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @param  __INTERRUPT__ specifies the USART interrupt source to check.
  *          This parameter can be one of the following values:
  *            @arg USART_IT_TXE:  Transmit Data Register empty interrupt
  *            @arg USART_IT_TC:   Transmission complete interrupt
  *            @arg USART_IT_RXNE: Receive Data register not empty interrupt
  *            @arg USART_IT_IDLE: Idle line detection interrupt
  *            @arg USART_IT_PE:   Parity Error interrupt
  *            @arg USART_IT_ERR:  Error interrupt(Frame error, noise error, overrun error)
  *          This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
#define __HAL_USART_ENABLE_IT(__HANDLE__, __INTERRUPT__)   ((((__INTERRUPT__) >> 28U) == 1U)? ((__HANDLE__)->Instance->CR1 |= ((__INTERRUPT__) & USART_IT_MASK)): \
                                                            (((__INTERRUPT__) >> 28U) == 2U)? ((__HANDLE__)->Instance->CR2 |=  ((__INTERRUPT__) & USART_IT_MASK)): \
                                                             ((__HANDLE__)->Instance->CR3 |= ((__INTERRUPT__) & USART_IT_MASK)))
#define __HAL_USART_DISABLE_IT(__HANDLE__, __INTERRUPT__)  ((((__INTERRUPT__) >> 28U) == 1U)? ((__HANDLE__)->Instance->CR1 &= ~((__INTERRUPT__) & USART_IT_MASK)): \
                                                            (((__INTERRUPT__) >> 28U) == 2U)? ((__HANDLE__)->Instance->CR2 &= ~((__INTERRUPT__) & USART_IT_MASK)): \
                                                             ((__HANDLE__)->Instance->CR3 &= ~ ((__INTERRUPT__) & USART_IT_MASK)))
    
/** @brief  Checks whether the specified USART interrupt has occurred or not.
  * @param  __HANDLE__ specifies the USART Handle.
  *         This parameter can be USARTx where x: 1, 2, 3 or 6 to select the USART peripheral.
  * @param  __IT__ specifies the USART interrupt source to check.
  *          This parameter can be one of the following values:
  *            @arg USART_IT_TXE: Transmit Data Register empty interrupt
  *            @arg USART_IT_TC:  Transmission complete interrupt
  *            @arg USART_IT_RXNE: Receive Data register not empty interrupt
  *            @arg USART_IT_IDLE: Idle line detection interrupt
  *            @arg USART_IT_ERR: Error interrupt
  *            @arg USART_IT_PE: Parity Error interrupt
  * @retval The new state of __IT__ (TRUE or FALSE).
  */
#define __HAL_USART_GET_IT_SOURCE(__HANDLE__, __IT__) (((((__IT__) >> 28U) == 1U)? (__HANDLE__)->Instance->CR1:(((((uint32_t)(__IT__)) >> 28U) == 2U)? \
                                                      (__HANDLE__)->Instance->CR2 : (__HANDLE__)->Instance->CR3)) & (((uint32_t)(__IT__)) & USART_IT_MASK))

/** @brief  Macro to enable the USART's one bit sample method
  * @param  __HANDLE__ specifies the USART Handle.  
  * @retval None
  */     
#define __HAL_USART_ONE_BIT_SAMPLE_ENABLE(__HANDLE__) ((__HANDLE__)->Instance->CR3|= USART_CR3_ONEBIT)

/** @brief  Macro to disable the USART's one bit sample method
  * @param  __HANDLE__ specifies the USART Handle.  
  * @retval None
  */      
#define __HAL_USART_ONE_BIT_SAMPLE_DISABLE(__HANDLE__) ((__HANDLE__)->Instance->CR3 &= (uint16_t)~((uint16_t)USART_CR3_ONEBIT))

/** @brief  Enable USART
  * @param  __HANDLE__ specifies the USART Handle.
  *         USART Handle selects the USARTx peripheral (USART availability and x value depending on device).
  * @retval None
  */
#define __HAL_USART_ENABLE(__HANDLE__)               ( (__HANDLE__)->Instance->CR1 |=  USART_CR1_UE)

/** @brief  Disable USART
  * @param  __HANDLE__ specifies the USART Handle.
  *         USART Handle selects the USARTx peripheral (USART availability and x value depending on device).
  * @retval None
  */ 
#define __HAL_USART_DISABLE(__HANDLE__)              ( (__HANDLE__)->Instance->CR1 &=  ~USART_CR1_UE)

/**
  * @}
  */
/* Exported functions --------------------------------------------------------*/
/** @addtogroup USART_Exported_Functions
  * @{
  */

/** @addtogroup USART_Exported_Functions_Group1
  * @{
  */
/* Initialization/de-initialization functions  **********************************/
HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart);
HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart);
void HAL_USART_MspInit(USART_HandleTypeDef *husart);
void HAL_USART_MspDeInit(USART_HandleTypeDef *husart);
/**
  * @}
  */

/** @addtogroup USART_Exported_Functions_Group2
  * @{
  */
/* IO operation functions *******************************************************/
HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout);
HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout);
HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout);
HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size);
HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size);
HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData,  uint16_t Size);
HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size);
HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size);
HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, uint16_t Size);
HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart);
HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart);
HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart);
/* Transfer Abort functions */
HAL_StatusTypeDef HAL_USART_Abort(USART_HandleTypeDef *husart);
HAL_StatusTypeDef HAL_USART_Abort_IT(USART_HandleTypeDef *husart);

void HAL_USART_IRQHandler(USART_HandleTypeDef *husart);
void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart);
void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart);
void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart);
void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart);
void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart);
void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart);
void HAL_USART_AbortCpltCallback (USART_HandleTypeDef *husart);
/**
  * @}
  */ 

/** @addtogroup USART_Exported_Functions_Group3
  * @{
  */
/* Peripheral State functions  ************************************************/
HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart);
uint32_t               HAL_USART_GetError(USART_HandleTypeDef *husart);
/**
  * @}
  */ 

/**
  * @}
  */
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup USART_Private_Constants USART Private Constants
  * @{
  */
/** @brief USART interruptions flag mask
  * 
  */ 
#define USART_IT_MASK  ((uint32_t) USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE | USART_CR1_RXNEIE | \
                                   USART_CR1_IDLEIE | USART_CR2_LBDIE | USART_CR3_CTSIE | USART_CR3_EIE )

#define USART_CR1_REG_INDEX             1U
#define USART_CR2_REG_INDEX             2U
#define USART_CR3_REG_INDEX             3U
/**
  * @}
  */

/* Private macros ------------------------------------------------------------*/
/** @defgroup USART_Private_Macros USART Private Macros
  * @{
  */
#define IS_USART_NACK_STATE(NACK) (((NACK) == USART_NACK_ENABLE) || \
                                   ((NACK) == USART_NACK_DISABLE))
#define IS_USART_LASTBIT(LASTBIT) (((LASTBIT) == USART_LASTBIT_DISABLE) || \
                                       ((LASTBIT) == USART_LASTBIT_ENABLE))
#define IS_USART_PHASE(CPHA) (((CPHA) == USART_PHASE_1EDGE) || ((CPHA) == USART_PHASE_2EDGE))
#define IS_USART_POLARITY(CPOL) (((CPOL) == USART_POLARITY_LOW) || ((CPOL) == USART_POLARITY_HIGH))
#define IS_USART_CLOCK(CLOCK) (((CLOCK) == USART_CLOCK_DISABLE) || \
                               ((CLOCK) == USART_CLOCK_ENABLE))
#define IS_USART_WORD_LENGTH(LENGTH) (((LENGTH) == USART_WORDLENGTH_8B) || \
                                          ((LENGTH) == USART_WORDLENGTH_9B))
#define IS_USART_STOPBITS(STOPBITS) (((STOPBITS) == USART_STOPBITS_1) || \
                                         ((STOPBITS) == USART_STOPBITS_0_5) || \
                                         ((STOPBITS) == USART_STOPBITS_1_5) || \
                                         ((STOPBITS) == USART_STOPBITS_2))
#define IS_USART_PARITY(PARITY) (((PARITY) == USART_PARITY_NONE) || \
                                     ((PARITY) == USART_PARITY_EVEN) || \
                                     ((PARITY) == USART_PARITY_ODD))
#define IS_USART_MODE(MODE) ((((MODE) & 0xFFF3U) == 0x00U) && ((MODE) != 0x00U))
#define IS_USART_BAUDRATE(BAUDRATE) ((BAUDRATE) < 10500001U)

#define USART_DIV(_PCLK_, _BAUD_)                  (((_PCLK_)*25U)/(2U*(_BAUD_)))
#define USART_DIVMANT(_PCLK_, _BAUD_)              (USART_DIV((_PCLK_), (_BAUD_))/100U)
#define USART_DIVFRAQ(_PCLK_, _BAUD_)              (((USART_DIV((_PCLK_), (_BAUD_)) - (USART_DIVMANT((_PCLK_), (_BAUD_)) * 100U)) * 16U + 50U) / 100U)
#define USART_BRR(_PCLK_, _BAUD_)                  ((USART_DIVMANT((_PCLK_), (_BAUD_)) << 4U)|(USART_DIVFRAQ((_PCLK_), (_BAUD_)) & 0x0FU))
/**
  * @}
  */

/* Private functions ---------------------------------------------------------*/
/** @defgroup USART_Private_Functions USART Private Functions
  * @{
  */

/**
  * @}
  */

/**
  * @}
  */ 

/**
  * @}
  */
  
#ifdef __cplusplus
}
#endif

#endif /* __STM32F4xx_HAL_USART_H */

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