stm32g4xx_ll_lpuart.h

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/**
  ******************************************************************************
  * @file    stm32g4xx_ll_lpuart.h
  * @author  MCD Application Team
  * @brief   Header file of LPUART LL module.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2019 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef STM32G4xx_LL_LPUART_H
#define STM32G4xx_LL_LPUART_H

#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32g4xx.h"

/** @addtogroup STM32G4xx_LL_Driver
  * @{
  */

#if defined (LPUART1)

/** @defgroup LPUART_LL LPUART
  * @{
  */

/* Private types -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/** @defgroup LPUART_LL_Private_Variables LPUART Private Variables
  * @{
  */
/* Array used to get the LPUART prescaler division decimal values versus @ref LPUART_LL_EC_PRESCALER values */
static const uint16_t LPUART_PRESCALER_TAB[] =
{
  (uint16_t)1,
  (uint16_t)2,
  (uint16_t)4,
  (uint16_t)6,
  (uint16_t)8,
  (uint16_t)10,
  (uint16_t)12,
  (uint16_t)16,
  (uint16_t)32,
  (uint16_t)64,
  (uint16_t)128,
  (uint16_t)256,
  (uint16_t)256,
  (uint16_t)256,
  (uint16_t)256,
  (uint16_t)256
};
/**
  * @}
  */

/* Private constants ---------------------------------------------------------*/
/** @defgroup LPUART_LL_Private_Constants LPUART Private Constants
  * @{
  */
/* Defines used in Baud Rate related macros and corresponding register setting computation */
#define LPUART_LPUARTDIV_FREQ_MUL     256U
#define LPUART_BRR_MASK               0x000FFFFFU
#define LPUART_BRR_MIN_VALUE          0x00000300U
/**
  * @}
  */


/* Private macros ------------------------------------------------------------*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup LPUART_LL_Private_Macros LPUART Private Macros
  * @{
  */
/**
  * @}
  */
#endif /*USE_FULL_LL_DRIVER*/

/* Exported types ------------------------------------------------------------*/
#if defined(USE_FULL_LL_DRIVER)
/** @defgroup LPUART_LL_ES_INIT LPUART Exported Init structures
  * @{
  */

/**
  * @brief LL LPUART Init Structure definition
  */
typedef struct
{
  uint32_t PrescalerValue;            /*!< Specifies the Prescaler to compute the communication baud rate.
                                           This parameter can be a value of @ref LPUART_LL_EC_PRESCALER.

                                           This feature can be modified afterwards using unitary
                                           function @ref LL_LPUART_SetPrescaler().*/

  uint32_t BaudRate;                  /*!< This field defines expected LPUART communication baud rate.

                                           This feature can be modified afterwards using unitary
                                           function @ref LL_LPUART_SetBaudRate().*/

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

                                           This feature can be modified afterwards using unitary
                                           function @ref LL_LPUART_SetDataWidth().*/

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

                                           This feature can be modified afterwards using unitary
                                           function @ref LL_LPUART_SetStopBitsLength().*/

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

                                           This feature can be modified afterwards using unitary
                                           function @ref LL_LPUART_SetParity().*/

  uint32_t TransferDirection;         /*!< Specifies whether the Receive and/or Transmit mode is enabled or disabled.
                                           This parameter can be a value of @ref LPUART_LL_EC_DIRECTION.

                                           This feature can be modified afterwards using unitary
                                           function @ref LL_LPUART_SetTransferDirection().*/

  uint32_t HardwareFlowControl;       /*!< Specifies whether the hardware flow control mode is enabled or disabled.
                                           This parameter can be a value of @ref LPUART_LL_EC_HWCONTROL.

                                           This feature can be modified afterwards using unitary
                                           function @ref LL_LPUART_SetHWFlowCtrl().*/

} LL_LPUART_InitTypeDef;

/**
  * @}
  */
#endif /* USE_FULL_LL_DRIVER */

/* Exported constants --------------------------------------------------------*/
/** @defgroup LPUART_LL_Exported_Constants LPUART Exported Constants
  * @{
  */

/** @defgroup LPUART_LL_EC_CLEAR_FLAG Clear Flags Defines
  * @brief    Flags defines which can be used with LL_LPUART_WriteReg function
  * @{
  */
#define LL_LPUART_ICR_PECF                 USART_ICR_PECF                /*!< Parity error clear flag */
#define LL_LPUART_ICR_FECF                 USART_ICR_FECF                /*!< Framing error clear flag */
#define LL_LPUART_ICR_NCF                  USART_ICR_NECF                /*!< Noise error detected clear flag */
#define LL_LPUART_ICR_ORECF                USART_ICR_ORECF               /*!< Overrun error clear flag */
#define LL_LPUART_ICR_IDLECF               USART_ICR_IDLECF              /*!< Idle line detected clear flag */
#define LL_LPUART_ICR_TCCF                 USART_ICR_TCCF                /*!< Transmission complete clear flag */
#define LL_LPUART_ICR_CTSCF                USART_ICR_CTSCF               /*!< CTS clear flag */
#define LL_LPUART_ICR_CMCF                 USART_ICR_CMCF                /*!< Character match clear flag */
#define LL_LPUART_ICR_WUCF                 USART_ICR_WUCF                /*!< Wakeup from Stop mode clear flag */
/**
  * @}
  */

/** @defgroup LPUART_LL_EC_GET_FLAG Get Flags Defines
  * @brief    Flags defines which can be used with LL_LPUART_ReadReg function
  * @{
  */
#define LL_LPUART_ISR_PE               USART_ISR_PE         /*!< Parity error flag */
#define LL_LPUART_ISR_FE               USART_ISR_FE         /*!< Framing error flag */
#define LL_LPUART_ISR_NE               USART_ISR_NE         /*!< Noise detected flag */
#define LL_LPUART_ISR_ORE              USART_ISR_ORE        /*!< Overrun error flag */
#define LL_LPUART_ISR_IDLE             USART_ISR_IDLE       /*!< Idle line detected flag */
#define LL_LPUART_ISR_RXNE_RXFNE       USART_ISR_RXNE_RXFNE /*!< Read data register or RX FIFO not empty flag */
#define LL_LPUART_ISR_TC               USART_ISR_TC         /*!< Transmission complete flag */
#define LL_LPUART_ISR_TXE_TXFNF        USART_ISR_TXE_TXFNF  /*!< Transmit data register empty or TX FIFO Not Full flag*/
#define LL_LPUART_ISR_CTSIF            USART_ISR_CTSIF      /*!< CTS interrupt flag */
#define LL_LPUART_ISR_CTS              USART_ISR_CTS        /*