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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_uart.h
  * @author  MCD Application Team
  * @brief   Header file of UART 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_UART_H
#define __STM32F4xx_HAL_UART_H

#ifdef __cplusplus
 extern "C" {
#endif

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

/** @addtogroup STM32F4xx_HAL_Driver
  * @{
  */

/** @addtogroup UART
  * @{
  */ 

/* Exported types ------------------------------------------------------------*/ 
/** @defgroup UART_Exported_Types UART Exported Types
  * @{
  */

/** 
  * @brief UART Init Structure definition  
  */ 
typedef struct
{
  uint32_t BaudRate;                  /*!< This member configures the UART communication baud rate.
                                           The baud rate is computed using the following formula:
                                           - IntegerDivider = ((PCLKx) / (8 * (OVR8+1) * (huart->Init.BaudRate)))
                                           - FractionalDivider = ((IntegerDivider - ((uint32_t) IntegerDivider)) * 8 * (OVR8+1)) + 0.5 
                                           Where OVR8 is the "oversampling by 8 mode" configuration bit in the CR1 register. */

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

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

  uint32_t Parity;                    /*!< Specifies the parity mode.
                                           This parameter can be a value of @ref UART_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 UART_Mode */

  uint32_t HwFlowCtl;                 /*!< Specifies whether the hardware flow control mode is enabled
                                           or disabled.
                                           This parameter can be a value of @ref UART_Hardware_Flow_Control */
  
  uint32_t OverSampling;              /*!< Specifies whether the Over sampling 8 is enabled or disabled, to achieve higher speed (up to fPCLK/8).
                                           This parameter can be a value of @ref UART_Over_Sampling */ 
}UART_InitTypeDef;

/** 
  * @brief HAL UART State structures definition  
  * @note  HAL UART State value is a combination of 2 different substates: gState and RxState.
  *        - gState contains UART state information related to global Handle management 
  *          and also information related to Tx operations.
  *          gState value coding follow below described bitmap :
  *          b7-b6  Error information 
  *             00 : No Error
  *             01 : (Not Used)
  *             10 : Timeout
  *             11 : Error
  *          b5     IP initilisation status
  *             0  : Reset (IP not initialized)
  *             1  : Init done (IP not initialized. HAL UART Init function already called)
  *          b4-b3  (not used)
  *             xx : Should be set to 00
  *          b2     Intrinsic process state
  *             0  : Ready
  *             1  : Busy (IP busy with some configuration or internal operations)
  *          b1     (not used)
  *             x  : Should be set to 0
  *          b0     Tx state
  *             0  : Ready (no Tx operation ongoing)
  *             1  : Busy (Tx operation ongoing)
  *        - RxState contains information related to Rx operations.
  *          RxState value coding follow below described bitmap :
  *          b7-b6  (not used)
  *             xx : Should be set to 00
  *          b5     IP initilisation status
  *             0  : Reset (IP not initialized)
  *             1  : Init done (IP not initialized)
  *          b4-b2  (not used)
  *            xxx : Should be set to 000
  *          b1     Rx state
  *             0  : Ready (no Rx operation ongoing)
  *             1  : Busy (Rx operation ongoing)
  *          b0     (not used)
  *             x  : Should be set to 0.
  */ 
typedef enum
{
  HAL_UART_STATE_RESET             = 0x00U,    /*!< Peripheral is not yet Initialized 
                                                   Value is allowed for gState and RxState */
  HAL_UART_STATE_READY             = 0x20U,    /*!< Peripheral Initialized and ready for use
                                                   Value is allowed for gState and RxState */
  HAL_UART_STATE_BUSY              = 0x24U,    /*!< an internal process is ongoing
                                                   Value is allowed for gState only */
  HAL_UART_STATE_BUSY_TX           = 0x21U,    /*!< Data Transmission process is ongoing 
                                                   Value is allowed for gState only */
  HAL_UART_STATE_BUSY_RX           = 0x22U,    /*!< Data Reception process is ongoing
                                                   Value is allowed for RxState only */
  HAL_UART_STATE_BUSY_TX_RX        = 0x23U,    /*!< Data Transmission and Reception process is ongoing 
                                                   Not to be used for neither gState nor RxState.
                                                   Value is result of combination (Or) between gState and RxState values */
  HAL_UART_STATE_TIMEOUT           = 0xA0U,    /*!< Timeout state    
                                                   Value is allowed for gState only */
  HAL_UART_STATE_ERROR             = 0xE0U     /*!< Error   
                                                   Value is allowed for gState only */
}HAL_UART_StateTypeDef;

/** 
  * @brief  UART handle Structure definition  
  */  
typedef struct
{
  USART_TypeDef                 *Instance;        /*!< UART registers base address        */
  
  UART_InitTypeDef              Init;             /*!< UART communication parameters      */
  
  uint8_t                       *pTxBuffPtr;      /*!< Pointer to UART Tx transfer Buffer */
  
  uint16_t                      TxXferSize;       /*!< UART Tx Transfer size              */
  
  __IO uint16_t                 TxXferCount;      /*!< UART Tx Transfer Counter           */
  
  uint8_t                       *pRxBuffPtr;      /*!< Pointer to UART Rx transfer Buffer */
  
  uint16_t                      RxXferSize;       /*!< UART Rx Transfer size              */
  
  __IO uint16_t                 RxXferCount;      /*!< UART Rx Transfer Counter           */  
  
  DMA_HandleTypeDef             *hdmatx;          /*!< UART Tx DMA Handle parameters      */
    
  DMA_HandleTypeDef             *hdmarx;          /*!< UART Rx DMA Handle parameters      */
  
  HAL_LockTypeDef               Lock;             /*!< Locking object                     */

  __IO HAL_UART_StateTypeDef    gState;           /*!< UART state information related to global Handle management 
                                                       and also related to Tx operations.
                                                       This parameter can be a value of @ref HAL_UART_StateTypeDef */
  
  __IO HAL_UART_StateTypeDef    RxState;          /*!< UART state information related to Rx operations.
                                                       This parameter can be a value of @ref HAL_UART_StateTypeDef */
  
  __IO uint32_t                 ErrorCode;        /*!< UART Error code                    */

}UART_HandleTypeDef;
/**
  * @}
  */

/* Exported constants --------------------------------------------------------*/
/** @defgroup UART_Exported_Constants UART Exported constants
  * @{
  */

/** @defgroup UART_Error_Code UART Error Code
  * @brief    UART Error Code 
  * @{
  */ 
#define HAL_UART_ERROR_NONE         0x00000000U   /*!< No error            */
#define HAL_UART_ERROR_PE           0x00000001U   /*!< Parity error        */
#define HAL_UART_ERROR_NE           0x00000002U   /*!< Noise error         */
#define HAL_UART_ERROR_FE           0x00000004U   /*!< Frame error         */
#define HAL_UART_ERROR_ORE          0x00000008U   /*!< Overrun error       */
#define HAL_UART_ERROR_DMA          0x00000010U   /*!< DMA transfer error  */
/**
  * @}
  */

/** @defgroup UART_Word_Length UART Word Length
  * @{
  */
#define UART_WORDLENGTH_8B                  0x00000000U
#define UART_WORDLENGTH_9B                  ((uint32_t)USART_CR1_M)
/**
  * @}
  */

/** @defgroup UART_Stop_Bits UART Number of Stop Bits
  * @{
  */
#define UART_STOPBITS_1                     0x00000000U
#define UART_STOPBITS_2                     ((uint32_t)USART_CR2_STOP_1)
/**
  * @}
  */ 

/** @defgroup UART_Parity UART Parity
  * @{
  */ 
#define UART_PARITY_NONE                    0x00000000U
#define UART_PARITY_EVEN                    ((uint32_t)USART_CR1_PCE)
#define UART_PARITY_ODD                     ((uint32_t)(USART_CR1_PCE | USART_CR1_PS)) 
/**
  * @}
  */ 

/** @defgroup UART_Hardware_Flow_Control UART Hardware Flow Control
  * @{
  */ 
#define UART_HWCONTROL_NONE                  0x00000000U
#define UART_HWCONTROL_RTS                   ((uint32_t)USART_CR3_RTSE)
#define UART_HWCONTROL_CTS                   ((uint32_t)USART_CR3_CTSE)
#define UART_HWCONTROL_RTS_CTS               ((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE))
/**
  * @}
  */

/** @defgroup UART_Mode UART Transfer Mode
  * @{
  */ 
#define UART_MODE_RX                        ((uint32_t)USART_CR1_RE)
#define UART_MODE_TX                        ((uint32_t)USART_CR1_TE)
#define UART_MODE_TX_RX                     ((uint32_t)(USART_CR1_TE |USART_CR1_RE))
/**
  * @}
  */
    
 /** @defgroup UART_State UART State
  * @{
  */ 
#define UART_STATE_DISABLE                  0x00000000U
#define UART_STATE_ENABLE                   ((uint32_t)USART_CR1_UE)
/**
  * @}
  */

/** @defgroup UART_Over_Sampling UART Over Sampling
  * @{
  */
#define UART_OVERSAMPLING_16                    0x00000000U
#define UART_OVERSAMPLING_8                     ((uint32_t)USART_CR1_OVER8)
/**
  * @}
  */

/** @defgroup UART_LIN_Break_Detection_Length  UART LIN Break Detection Length
  * @{
  */  
#define UART_LINBREAKDETECTLENGTH_10B      0x00000000U
#define UART_LINBREAKDETECTLENGTH_11B      0x00000020U
/**
  * @}
  */
                                         
/** @defgroup UART_WakeUp_functions  UART Wakeup Functions
  * @{
  */
#define UART_WAKEUPMETHOD_IDLELINE                0x00000000U
#define UART_WAKEUPMETHOD_ADDRESSMARK             0x00000800U
/**
  * @}
  */

/** @defgroup UART_Flags   UART FLags
  *        Elements values convention: 0xXXXX
  *           - 0xXXXX  : Flag mask in the SR register
  * @{
  */
#define UART_FLAG_CTS                       ((uint32_t)USART_SR_CTS)
#define UART_FLAG_LBD                       ((uint32_t)USART_SR_LBD)
#define UART_FLAG_TXE                       ((uint32_t)USART_SR_TXE)
#define UART_FLAG_TC                        ((uint32_t)USART_SR_TC)
#define UART_FLAG_RXNE                      ((uint32_t)USART_SR_RXNE)
#define UART_FLAG_IDLE                      ((uint32_t)USART_SR_IDLE)
#define UART_FLAG_ORE                       ((uint32_t)USART_SR_ORE)
#define UART_FLAG_NE                        ((uint32_t)USART_SR_NE)
#define UART_FLAG_FE                        ((uint32_t)USART_SR_FE)
#define UART_FLAG_PE                        ((uint32_t)USART_SR_PE)
/**
  * @}
  */

/** @defgroup UART_Interrupt_definition  UART Interrupt Definitions
  *        Elements values convention: 0xY000XXXX
  *           - XXXX  : Interrupt mask (16 bits) in the Y register
  *           - Y  : Interrupt source register (2bits)
  *                 - 0001: CR1 register
  *                 - 0010: CR2 register
  *                 - 0011: CR3 register
  *
  * @{
  */ 

#define UART_IT_PE                       ((uint32_t)(UART_CR1_REG_INDEX << 28U | USART_CR1_PEIE))
#define UART_IT_TXE                      ((uint32_t)(UART_CR1_REG_INDEX << 28U | USART_CR1_TXEIE))
#define UART_IT_TC                       ((uint32_t)(UART_CR1_REG_INDEX << 28U | USART_CR1_TCIE))
#define UART_IT_RXNE                     ((uint32_t)(UART_CR1_REG_INDEX << 28U | USART_CR1_RXNEIE))
#define UART_IT_IDLE                     ((uint32_t)(UART_CR1_REG_INDEX << 28U | USART_CR1_IDLEIE))

#define UART_IT_LBD                      ((uint32_t)(UART_CR2_REG_INDEX << 28U | USART_CR2_LBDIE))

#define UART_IT_CTS                      ((uint32_t)(UART_CR3_REG_INDEX << 28U | USART_CR3_CTSIE))
#define UART_IT_ERR                      ((uint32_t)(UART_CR3_REG_INDEX << 28U | USART_CR3_EIE))
/**
  * @}
  */

/**
  * @}
  */
  
/* Exported macro ------------------------------------------------------------*/
/** @defgroup UART_Exported_Macros UART Exported Macros
  * @{
  */

/** @brief Reset UART handle gstate & RxState
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @retval None
  */
#define __HAL_UART_RESET_HANDLE_STATE(__HANDLE__)  do{                                                   \
                                                       (__HANDLE__)->gState = HAL_UART_STATE_RESET;      \
                                                       (__HANDLE__)->RxState = HAL_UART_STATE_RESET;     \
                                                     } while(0U)

/** @brief  Flushes the UART DR register 
  * @param  __HANDLE__ specifies the UART Handle.
  */
#define __HAL_UART_FLUSH_DRREGISTER(__HANDLE__) ((__HANDLE__)->Instance->DR)

/** @brief  Checks whether the specified UART flag is set or not.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @param  __FLAG__ specifies the flag to check.
  *        This parameter can be one of the following values:
  *            @arg UART_FLAG_CTS:  CTS Change flag (not available for UART4 and UART5)
  *            @arg UART_FLAG_LBD:  LIN Break detection flag
  *            @arg UART_FLAG_TXE:  Transmit data register empty flag
  *            @arg UART_FLAG_TC:   Transmission Complete flag
  *            @arg UART_FLAG_RXNE: Receive data register not empty flag
  *            @arg UART_FLAG_IDLE: Idle Line detection flag
  *            @arg UART_FLAG_ORE:  Overrun Error flag
  *            @arg UART_FLAG_NE:   Noise Error flag
  *            @arg UART_FLAG_FE:   Framing Error flag
  *            @arg UART_FLAG_PE:   Parity Error flag
  * @retval The new state of __FLAG__ (TRUE or FALSE).
  */

#define __HAL_UART_GET_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->SR & (__FLAG__)) == (__FLAG__))   
     
/** @brief  Clears the specified UART pending flag.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @param  __FLAG__ specifies the flag to check.
  *          This parameter can be any combination of the following values:
  *            @arg UART_FLAG_CTS:  CTS Change flag (not available for UART4 and UART5).
  *            @arg UART_FLAG_LBD:  LIN Break detection flag.
  *            @arg UART_FLAG_TC:   Transmission Complete flag.
  *            @arg UART_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_UART_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->SR = ~(__FLAG__))

/** @brief  Clear the UART PE pending flag.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @retval None
  */
#define __HAL_UART_CLEAR_PEFLAG(__HANDLE__)     \
  do{                                           \
    __IO uint32_t tmpreg = 0x00U;                \
    tmpreg = (__HANDLE__)->Instance->SR;        \
    tmpreg = (__HANDLE__)->Instance->DR;        \
    UNUSED(tmpreg);                             \
  } while(0U)
                                              
/** @brief  Clear the UART FE pending flag.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @retval None
  */
#define __HAL_UART_CLEAR_FEFLAG(__HANDLE__) __HAL_UART_CLEAR_PEFLAG(__HANDLE__)

/** @brief  Clear the UART NE pending flag.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @retval None
  */
#define __HAL_UART_CLEAR_NEFLAG(__HANDLE__) __HAL_UART_CLEAR_PEFLAG(__HANDLE__)

/** @brief  Clear the UART ORE pending flag.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @retval None
  */
#define __HAL_UART_CLEAR_OREFLAG(__HANDLE__) __HAL_UART_CLEAR_PEFLAG(__HANDLE__)

/** @brief  Clear the UART IDLE pending flag.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @retval None
  */
#define __HAL_UART_CLEAR_IDLEFLAG(__HANDLE__) __HAL_UART_CLEAR_PEFLAG(__HANDLE__)
                                                 
/** @brief  Enable the specified UART interrupt.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @param  __INTERRUPT__ specifies the UART interrupt source to enable.
  *          This parameter can be one of the following values:
  *            @arg UART_IT_CTS:  CTS change interrupt
  *            @arg UART_IT_LBD:  LIN Break detection interrupt
  *            @arg UART_IT_TXE:  Transmit Data Register empty interrupt
  *            @arg UART_IT_TC:   Transmission complete interrupt
  *            @arg UART_IT_RXNE: Receive Data register not empty interrupt
  *            @arg UART_IT_IDLE: Idle line detection interrupt
  *            @arg UART_IT_PE:   Parity Error interrupt
  *            @arg UART_IT_ERR:  Error interrupt(Frame error, noise error, overrun error)
  * @retval None
  */
#define UART_IT_MASK  0x0000FFFFU
#define __HAL_UART_ENABLE_IT(__HANDLE__, __INTERRUPT__)   ((((__INTERRUPT__) >> 28U) == 1U)? ((__HANDLE__)->Instance->CR1 |= ((__INTERRUPT__) & UART_IT_MASK)): \
                                                           (((__INTERRUPT__) >> 28U) == 2U)? ((__HANDLE__)->Instance->CR2 |=  ((__INTERRUPT__) & UART_IT_MASK)): \
                                                        ((__HANDLE__)->Instance->CR3 |= ((__INTERRUPT__) & UART_IT_MASK)))
/** @brief  Disable the specified UART interrupt.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @param  __INTERRUPT__ specifies the UART interrupt source to disable.
  *          This parameter can be one of the following values:
  *            @arg UART_IT_CTS:  CTS change interrupt
  *            @arg UART_IT_LBD:  LIN Break detection interrupt
  *            @arg UART_IT_TXE:  Transmit Data Register empty interrupt
  *            @arg UART_IT_TC:   Transmission complete interrupt
  *            @arg UART_IT_RXNE: Receive Data register not empty interrupt
  *            @arg UART_IT_IDLE: Idle line detection interrupt
  *            @arg UART_IT_PE:   Parity Error interrupt
  *            @arg UART_IT_ERR:  Error interrupt(Frame error, noise error, overrun error)
  * @retval None
  */
#define __HAL_UART_DISABLE_IT(__HANDLE__, __INTERRUPT__)  ((((__INTERRUPT__) >> 28U) == 1U)? ((__HANDLE__)->Instance->CR1 &= ~((__INTERRUPT__) & UART_IT_MASK)): \
                                                           (((__INTERRUPT__) >> 28U) == 2U)? ((__HANDLE__)->Instance->CR2 &= ~((__INTERRUPT__) & UART_IT_MASK)): \
                                                        ((__HANDLE__)->Instance->CR3 &= ~ ((__INTERRUPT__) & UART_IT_MASK)))

/** @brief  Checks whether the specified UART interrupt has occurred or not.
  * @param  __HANDLE__ specifies the UART Handle.
  *         This parameter can be UARTx where x: 1, 2, 3, 4, 5, 6, 7 or 8 to select the USART or 
  *         UART peripheral.
  * @param  __IT__ specifies the UART interrupt source to check.
  *          This parameter can be one of the following values:
  *            @arg UART_IT_CTS: CTS change interrupt (not available for UART4 and UART5)
  *            @arg UART_IT_LBD: LIN Break detection interrupt
  *            @arg UART_IT_TXE: Transmit Data Register empty interrupt
  *            @arg UART_IT_TC:  Transmission complete interrupt
  *            @arg UART_IT_RXNE: Receive Data register not empty interrupt
  *            @arg UART_IT_IDLE: Idle line detection interrupt
  *            @arg USART_IT_ERR: Error interrupt
  * @retval The new state of __IT__ (TRUE or FALSE).
  */
#define __HAL_UART_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__)) & UART_IT_MASK))

/** @brief  Enable CTS flow control 
  *         This macro allows to enable CTS hardware flow control for a given UART instance, 
  *         without need to call HAL_UART_Init() function.
  *         As involving direct access to UART registers, usage of this macro should be fully endorsed by user.
  * @note   As macro is expected to be used for modifying CTS Hw flow control feature activation, without need
  *         for USART instance Deinit/Init, following conditions for macro call should be fulfilled :
  *           - UART instance should have already been initialised (through call of HAL_UART_Init() )
  *           - macro could only be called when corresponding UART instance is disabled (i.e __HAL_UART_DISABLE(__HANDLE__))
  *             and should be followed by an Enable macro (i.e __HAL_UART_ENABLE(__HANDLE__)).                                                                                                                  
  * @param  __HANDLE__ specifies the UART Handle.
  *         The Handle Instance can be USART1, USART2 or LPUART.
  * @retval None
  */
#define __HAL_UART_HWCONTROL_CTS_ENABLE(__HANDLE__)        \
  do{                                                      \
    SET_BIT((__HANDLE__)->Instance->CR3, USART_CR3_CTSE);  \
    (__HANDLE__)->Init.HwFlowCtl |= USART_CR3_CTSE;        \
  } while(0U)

/** @brief  Disable CTS flow control 
  *         This macro allows to disable CTS hardware flow control for a given UART instance, 
  *         without need to call HAL_UART_Init() function.
  *         As involving direct access to UART registers, usage of this macro should be fully endorsed by user.
  * @note   As macro is expected to be used for modifying CTS Hw flow control feature activation, without need
  *         for USART instance Deinit/Init, following conditions for macro call should be fulfilled :
  *           - UART instance should have already been initialised (through call of HAL_UART_Init() )
  *           - macro could only be called when corresponding UART instance is disabled (i.e __HAL_UART_DISABLE(__HANDLE__))
  *             and should be followed by an Enable macro (i.e __HAL_UART_ENABLE(__HANDLE__)). 
  * @param  __HANDLE__ specifies the UART Handle.
  *         The Handle Instance can be USART1, USART2 or LPUART.
  * @retval None
  */
#define __HAL_UART_HWCONTROL_CTS_DISABLE(__HANDLE__)        \
  do{                                                       \
    CLEAR_BIT((__HANDLE__)->Instance->CR3, USART_CR3_CTSE); \
    (__HANDLE__)->Init.HwFlowCtl &= ~(USART_CR3_CTSE);      \
  } while(0U)

/** @brief  Enable RTS flow control 
  *         This macro allows to enable RTS hardware flow control for a given UART instance, 
  *         without need to call HAL_UART_Init() function.
  *         As involving direct access to UART registers, usage of this macro should be fully endorsed by user.
  * @note   As macro is expected to be used for modifying RTS Hw flow control feature activation, without need
  *         for USART instance Deinit/Init, following conditions for macro call should be fulfilled :
  *           - UART instance should have already been initialised (through call of HAL_UART_Init() )
  *           - macro could only be called when corresponding UART instance is disabled (i.e __HAL_UART_DISABLE(__HANDLE__))
  *             and should be followed by an Enable macro (i.e __HAL_UART_ENABLE(__HANDLE__)). 
  * @param  __HANDLE__ specifies the UART Handle.
  *         The Handle Instance can be USART1, USART2 or LPUART.
  * @retval None
  */
#define __HAL_UART_HWCONTROL_RTS_ENABLE(__HANDLE__)       \
  do{                                                     \
    SET_BIT((__HANDLE__)->Instance->CR3, USART_CR3_RTSE); \
    (__HANDLE__)->Init.HwFlowCtl |= USART_CR3_RTSE;       \
  } while(0U)

/** @brief  Disable RTS flow control 
  *         This macro allows to disable RTS hardware flow control for a given UART instance, 
  *         without need to call HAL_UART_Init() function.
  *         As involving direct access to UART registers, usage of this macro should be fully endorsed by user.
  * @note   As macro is expected to be used for modifying RTS Hw flow control feature activation, without need
  *         for USART instance Deinit/Init, following conditions for macro call should be fulfilled :
  *           - UART instance should have already been initialised (through call of HAL_UART_Init() )
  *           - macro could only be called when corresponding UART instance is disabled (i.e __HAL_UART_DISABLE(__HANDLE__))
  *             and should be followed by an Enable macro (i.e __HAL_UART_ENABLE(__HANDLE__)). 
  * @param  __HANDLE__ specifies the UART Handle.
  *         The Handle Instance can be USART1, USART2 or LPUART.
  * @retval None
  */
#define __HAL_UART_HWCONTROL_RTS_DISABLE(__HANDLE__)       \
  do{                                                      \
    CLEAR_BIT((__HANDLE__)->Instance->CR3, USART_CR3_RTSE);\
    (__HANDLE__)->Init.HwFlowCtl &= ~(USART_CR3_RTSE);     \
  } while(0U)

/** @brief  macros to enables the UART's one bit sample method
  * @param  __HANDLE__ specifies the UART Handle.  
  * @retval None
  */     
#define __HAL_UART_ONE_BIT_SAMPLE_ENABLE(__HANDLE__) ((__HANDLE__)->Instance->CR3|= USART_CR3_ONEBIT)

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

/** @brief  Enable UART
  * @param  __HANDLE__ specifies the UART Handle.
  * @retval None
  */    
#define __HAL_UART_ENABLE(__HANDLE__)               ((__HANDLE__)->Instance->CR1 |=  USART_CR1_UE)

/** @brief  Disable UART
  * @param  __HANDLE__ specifies the UART Handle.
  * @retval None
  */    
#define __HAL_UART_DISABLE(__HANDLE__)              ((__HANDLE__)->Instance->CR1 &=  ~USART_CR1_UE)
/**
  * @}
  */
    
/* Exported functions --------------------------------------------------------*/
/** @addtogroup UART_Exported_Functions
  * @{
  */
  
/** @addtogroup UART_Exported_Functions_Group1
  * @{
  */    
/* Initialization/de-initialization functions  **********************************/
HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength);
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod);
HAL_StatusTypeDef HAL_UART_DeInit (UART_HandleTypeDef *huart);
void HAL_UART_MspInit(UART_HandleTypeDef *huart);
void HAL_UART_MspDeInit(UART_HandleTypeDef *huart);
/**
  * @}
  */

/** @addtogroup UART_Exported_Functions_Group2
  * @{
  */
/* IO operation functions *******************************************************/
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout);
HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout);
HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart);
/* Transfer Abort functions */
HAL_StatusTypeDef HAL_UART_Abort(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_AbortTransmit(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_AbortReceive(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_Abort_IT(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_AbortTransmit_IT(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_AbortReceive_IT(UART_HandleTypeDef *huart);

void HAL_UART_IRQHandler(UART_HandleTypeDef *huart);
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart);
void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart);
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart);
void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart);
void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart);
void HAL_UART_AbortCpltCallback (UART_HandleTypeDef *huart);
void HAL_UART_AbortTransmitCpltCallback (UART_HandleTypeDef *huart);
void HAL_UART_AbortReceiveCpltCallback (UART_HandleTypeDef *huart);
/**
  * @}
  */

/** @addtogroup UART_Exported_Functions_Group3
  * @{
  */
/* Peripheral Control functions  ************************************************/
HAL_StatusTypeDef HAL_LIN_SendBreak(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_MultiProcessor_ExitMuteMode(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart);
/**
  * @}
  */

/** @addtogroup UART_Exported_Functions_Group4
  * @{
  */
/* Peripheral State functions  **************************************************/
HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart);
uint32_t              HAL_UART_GetError(UART_HandleTypeDef *huart);
/**
  * @}
  */ 

/**
  * @}
  */ 
/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
/** @defgroup UART_Private_Constants UART Private Constants
  * @{
  */
/** @brief UART interruptions flag mask
  * 
  */ 
#define UART_CR1_REG_INDEX               1U
#define UART_CR2_REG_INDEX               2U
#define UART_CR3_REG_INDEX               3U
/**
  * @}
  */

/* Private macros ------------------------------------------------------------*/
/** @defgroup UART_Private_Macros UART Private Macros
  * @{
  */
#define IS_UART_WORD_LENGTH(LENGTH) (((LENGTH) == UART_WORDLENGTH_8B) || \
                                     ((LENGTH) == UART_WORDLENGTH_9B))
#define IS_UART_LIN_WORD_LENGTH(LENGTH) (((LENGTH) == UART_WORDLENGTH_8B))
#define IS_UART_STOPBITS(STOPBITS) (((STOPBITS) == UART_STOPBITS_1) || \
                                    ((STOPBITS) == UART_STOPBITS_2))
#define IS_UART_PARITY(PARITY) (((PARITY) == UART_PARITY_NONE) || \
                                ((PARITY) == UART_PARITY_EVEN) || \
                                ((PARITY) == UART_PARITY_ODD))
#define IS_UART_HARDWARE_FLOW_CONTROL(CONTROL)\
                              (((CONTROL) == UART_HWCONTROL_NONE) || \
                               ((CONTROL) == UART_HWCONTROL_RTS) || \
                               ((CONTROL) == UART_HWCONTROL_CTS) || \
                               ((CONTROL) == UART_HWCONTROL_RTS_CTS))
#define IS_UART_MODE(MODE) ((((MODE) & 0x0000FFF3U) == 0x00U) && ((MODE) != 0x00U))
#define IS_UART_STATE(STATE) (((STATE) == UART_STATE_DISABLE) || \
                              ((STATE) == UART_STATE_ENABLE))
#define IS_UART_OVERSAMPLING(SAMPLING) (((SAMPLING) == UART_OVERSAMPLING_16) || \
                                        ((SAMPLING) == UART_OVERSAMPLING_8))
#define IS_UART_LIN_OVERSAMPLING(SAMPLING) (((SAMPLING) == UART_OVERSAMPLING_16))
#define IS_UART_LIN_BREAK_DETECT_LENGTH(LENGTH) (((LENGTH) == UART_LINBREAKDETECTLENGTH_10B) || \
                                                 ((LENGTH) == UART_LINBREAKDETECTLENGTH_11B))
#define IS_UART_WAKEUPMETHOD(WAKEUP) (((WAKEUP) == UART_WAKEUPMETHOD_IDLELINE) || \
                                      ((WAKEUP) == UART_WAKEUPMETHOD_ADDRESSMARK))
#define IS_UART_BAUDRATE(BAUDRATE) ((BAUDRATE) < 10500001U)
#define IS_UART_ADDRESS(ADDRESS) ((ADDRESS) <= 0x0FU)

#define UART_DIV_SAMPLING16(_PCLK_, _BAUD_)            (((_PCLK_)*25U)/(4U*(_BAUD_)))
#define UART_DIVMANT_SAMPLING16(_PCLK_, _BAUD_)        (UART_DIV_SAMPLING16((_PCLK_), (_BAUD_))/100U)
#define UART_DIVFRAQ_SAMPLING16(_PCLK_, _BAUD_)        (((UART_DIV_SAMPLING16((_PCLK_), (_BAUD_)) - (UART_DIVMANT_SAMPLING16((_PCLK_), (_BAUD_)) * 100U)) * 16U + 50U) / 100U)
/* UART BRR = mantissa + overflow + fraction
            = (UART DIVMANT << 4) + (UART DIVFRAQ & 0xF0) + (UART DIVFRAQ & 0x0FU) */
#define UART_BRR_SAMPLING16(_PCLK_, _BAUD_)            (((UART_DIVMANT_SAMPLING16((_PCLK_), (_BAUD_)) << 4U) + \
                                                        (UART_DIVFRAQ_SAMPLING16((_PCLK_), (_BAUD_)) & 0xF0U)) + \
                                                        (UART_DIVFRAQ_SAMPLING16((_PCLK_), (_BAUD_)) & 0x0FU))

#define UART_DIV_SAMPLING8(_PCLK_, _BAUD_)             (((_PCLK_)*25U)/(2U*(_BAUD_)))
#define UART_DIVMANT_SAMPLING8(_PCLK_, _BAUD_)         (UART_DIV_SAMPLING8((_PCLK_), (_BAUD_))/100U)
#define UART_DIVFRAQ_SAMPLING8(_PCLK_, _BAUD_)         (((UART_DIV_SAMPLING8((_PCLK_), (_BAUD_)) - (UART_DIVMANT_SAMPLING8((_PCLK_), (_BAUD_)) * 100U)) * 8U + 50U) / 100U)
/* UART BRR = mantissa + overflow + fraction
            = (UART DIVMANT << 4) + ((UART DIVFRAQ & 0xF8) << 1) + (UART DIVFRAQ & 0x07U) */
#define UART_BRR_SAMPLING8(_PCLK_, _BAUD_)             (((UART_DIVMANT_SAMPLING8((_PCLK_), (_BAUD_)) << 4U) + \
                                                        ((UART_DIVFRAQ_SAMPLING8((_PCLK_), (_BAUD_)) & 0xF8U) << 1U)) + \
                                                        (UART_DIVFRAQ_SAMPLING8((_PCLK_), (_BAUD_)) & 0x07U))

/**
  * @}
  */

/* Private functions ---------------------------------------------------------*/
/** @defgroup UART_Private_Functions UART Private Functions
  * @{
  */

/**
  * @}
  */

/**
  * @}
  */ 

/**
  * @}
  */

#ifdef __cplusplus
}
#endif

#endif /* __STM32F4xx_HAL_UART_H */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/