/** ****************************************************************************** * @file stm32l4xx_hal_usart.h * @author MCD Application Team * @brief Header file of USART HAL module. ****************************************************************************** * @attention * * Copyright (c) 2017 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 STM32L4xx_HAL_USART_H #define STM32L4xx_HAL_USART_H #ifdef __cplusplus extern "C" { #endif /* Includes ------------------------------------------------------------------*/ #include "stm32l4xx_hal_def.h" /** @addtogroup STM32L4xx_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: Baud Rate Register[15:4] = ((2 * fclk_pres) / ((huart->Init.BaudRate)))[15:4] Baud Rate Register[3] = 0 Baud Rate Register[2:0] = (((2 * fclk_pres) / ((huart->Init.BaudRate)))[3:0]) >> 1 where fclk_pres is the USART input clock frequency (fclk) (divided by a prescaler if applicable) @note Oversampling by 8 is systematically applied to achieve high baud rates. */ uint32_t WordLength; /*!< Specifies the number of data bits transmitted or received in a frame. This parameter can be a value of @ref USARTEx_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. */ #if defined(USART_PRESC_PRESCALER) uint32_t ClockPrescaler; /*!< Specifies the prescaler value used to divide the USART clock source. This parameter can be a value of @ref USART_ClockPrescaler. */ #endif /* USART_PRESC_PRESCALER */ } USART_InitTypeDef; /** * @brief HAL USART State structures definition */ typedef enum { HAL_USART_STATE_RESET = 0x00U, /*!< Peripheral is not 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 clock sources definitions */ typedef enum { USART_CLOCKSOURCE_PCLK1 = 0x00U, /*!< PCLK1 clock source */ USART_CLOCKSOURCE_PCLK2 = 0x01U, /*!< PCLK2 clock source */ USART_CLOCKSOURCE_HSI = 0x02U, /*!< HSI clock source */ USART_CLOCKSOURCE_SYSCLK = 0x04U, /*!< SYSCLK clock source */ USART_CLOCKSOURCE_LSE = 0x08U, /*!< LSE clock source */ USART_CLOCKSOURCE_UNDEFINED = 0x10U /*!< Undefined clock source */ } USART_ClockSourceTypeDef; /** * @brief USART handle Structure definition */ typedef struct __USART_HandleTypeDef { USART_TypeDef *Instance; /*!< USART registers base address */ USART_InitTypeDef Init; /*!< USART communication parameters */ const 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 */ uint16_t Mask; /*!< USART Rx RDR register mask */ #if defined(USART_CR1_FIFOEN) uint16_t NbRxDataToProcess; /*!< Number of data to process during RX ISR execution */ uint16_t NbTxDataToProcess; /*!< Number of data to process during TX ISR execution */ #endif /* USART_CR1_FIFOEN */ #if defined(USART_CR2_SLVEN) uint32_t SlaveMode; /*!< Enable/Disable USART SPI Slave Mode. This parameter can be a value of @ref USARTEx_Slave_Mode */ #endif /* USART_CR2_SLVEN */ #if defined(USART_CR1_FIFOEN) uint32_t FifoMode; /*!< Specifies if the FIFO mode will be used. This parameter can be a value of @ref USARTEx_FIFO_mode. */ #endif /* USART_CR1_FIFOEN */ void (*RxISR)(struct __USART_HandleTypeDef *husart); /*!< Function pointer on Rx IRQ handler */ void (*TxISR)(struct __USART_HandleTypeDef *husart); /*!< Function pointer on Tx IRQ handler */ 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 */ #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) void (* TxHalfCpltCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Tx Half Complete Callback */ void (* TxCpltCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Tx Complete Callback */ void (* RxHalfCpltCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Rx Half Complete Callback */ void (* RxCpltCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Rx Complete Callback */ void (* TxRxCpltCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Tx Rx Complete Callback */ void (* ErrorCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Error Callback */ void (* AbortCpltCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Abort Complete Callback */ #if defined(USART_CR1_FIFOEN) void (* RxFifoFullCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Rx Fifo Full Callback */ void (* TxFifoEmptyCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Tx Fifo Empty Callback */ #endif /* USART_CR1_FIFOEN */ void (* MspInitCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Msp Init callback */ void (* MspDeInitCallback)(struct __USART_HandleTypeDef *husart); /*!< USART Msp DeInit callback */ #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ } USART_HandleTypeDef; #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) /** * @brief HAL USART Callback ID enumeration definition */ typedef enum { HAL_USART_TX_HALFCOMPLETE_CB_ID = 0x00U, /*!< USART Tx Half Complete Callback ID */ HAL_USART_TX_COMPLETE_CB_ID = 0x01U, /*!< USART Tx Complete Callback ID */ HAL_USART_RX_HALFCOMPLETE_CB_ID = 0x02U, /*!< USART Rx Half Complete Callback ID */ HAL_USART_RX_COMPLETE_CB_ID = 0x03U, /*!< USART Rx Complete Callback ID */ HAL_USART_TX_RX_COMPLETE_CB_ID = 0x04U, /*!< USART Tx Rx Complete Callback ID */ HAL_USART_ERROR_CB_ID = 0x05U, /*!< USART Error Callback ID */ HAL_USART_ABORT_COMPLETE_CB_ID = 0x06U, /*!< USART Abort Complete Callback ID */ #if defined(USART_CR1_FIFOEN) HAL_USART_RX_FIFO_FULL_CB_ID = 0x07U, /*!< USART Rx Fifo Full Callback ID */ HAL_USART_TX_FIFO_EMPTY_CB_ID = 0x08U, /*!< USART Tx Fifo Empty Callback ID */ #endif /* USART_CR1_FIFOEN */ HAL_USART_MSPINIT_CB_ID = 0x09U, /*!< USART MspInit callback ID */ HAL_USART_MSPDEINIT_CB_ID = 0x0AU /*!< USART MspDeInit callback ID */ } HAL_USART_CallbackIDTypeDef; /** * @brief HAL USART Callback pointer definition */ typedef void (*pUSART_CallbackTypeDef)(USART_HandleTypeDef *husart); /*!< pointer to an USART callback function */ #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ /** * @} */ /* Exported constants --------------------------------------------------------*/ /** @defgroup USART_Exported_Constants USART Exported Constants * @{ */ /** @defgroup USART_Error_Definition USART Error Definition * @{ */ #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 */ #if defined(USART_CR2_SLVEN) #define HAL_USART_ERROR_UDR (0x00000020U) /*!< SPI slave underrun error */ #endif /* USART_CR2_SLVEN */ #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) #define HAL_USART_ERROR_INVALID_CALLBACK (0x00000040U) /*!< Invalid Callback error */ #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ #define HAL_USART_ERROR_RTO (0x00000080U) /*!< Receiver Timeout error */ /** * @} */ /** @defgroup USART_Stop_Bits USART Number of Stop Bits * @{ */ #define USART_STOPBITS_0_5 USART_CR2_STOP_0 /*!< USART frame with 0.5 stop bit */ #define USART_STOPBITS_1 0x00000000U /*!< USART frame with 1 stop bit */ #define USART_STOPBITS_1_5 (USART_CR2_STOP_0 | USART_CR2_STOP_1) /*!< USART frame with 1.5 stop bits */ #define USART_STOPBITS_2 USART_CR2_STOP_1 /*!< USART frame with 2 stop bits */ /** * @} */ /** @defgroup USART_Parity USART Parity * @{ */ #define USART_PARITY_NONE 0x00000000U /*!< No parity */ #define USART_PARITY_EVEN USART_CR1_PCE /*!< Even parity */ #define USART_PARITY_ODD (USART_CR1_PCE | USART_CR1_PS) /*!< Odd parity */ /** * @} */ /** @defgroup USART_Mode USART Mode * @{ */ #define USART_MODE_RX USART_CR1_RE /*!< RX mode */ #define USART_MODE_TX USART_CR1_TE /*!< TX mode */ #define USART_MODE_TX_RX (USART_CR1_TE |USART_CR1_RE) /*!< RX and TX mode */ /** * @} */ /** @defgroup USART_Clock USART Clock * @{ */ #define USART_CLOCK_DISABLE 0x00000000U /*!< USART clock disable */ #define USART_CLOCK_ENABLE USART_CR2_CLKEN /*!< USART clock enable */ /** * @} */ /** @defgroup USART_Clock_Polarity USART Clock Polarity * @{ */ #define USART_POLARITY_LOW 0x00000000U /*!< Driver enable signal is active high */ #define USART_POLARITY_HIGH USART_CR2_CPOL /*!< Driver enable signal is active low */ /** * @} */ /** @defgroup USART_Clock_Phase USART Clock Phase * @{ */ #define USART_PHASE_1EDGE 0x00000000U /*!< USART frame phase on first clock transition */ #define USART_PHASE_2EDGE USART_CR2_CPHA /*!< USART frame phase on second clock transition */ /** * @} */ /** @defgroup USART_Last_Bit USART Last Bit * @{ */ #define USART_LASTBIT_DISABLE 0x00000000U /*!< USART frame last data bit clock pulse not output to SCLK pin */ #define USART_LASTBIT_ENABLE USART_CR2_LBCL /*!< USART frame last data bit clock pulse output to SCLK pin */ /** * @} */ #if defined(USART_PRESC_PRESCALER) /** @defgroup USART_ClockPrescaler USART Clock Prescaler * @{ */ #define USART_PRESCALER_DIV1 0x00000000U /*!< fclk_pres = fclk */ #define USART_PRESCALER_DIV2 0x00000001U /*!< fclk_pres = fclk/2 */ #define USART_PRESCALER_DIV4 0x00000002U /*!< fclk_pres = fclk/4 */ #define USART_PRESCALER_DIV6 0x00000003U /*!< fclk_pres = fclk/6 */ #define USART_PRESCALER_DIV8 0x00000004U /*!< fclk_pres = fclk/8 */ #define USART_PRESCALER_DIV10 0x00000005U /*!< fclk_pres = fclk/10 */ #define USART_PRESCALER_DIV12 0x00000006U /*!< fclk_pres = fclk/12 */ #define USART_PRESCALER_DIV16 0x00000007U /*!< fclk_pres = fclk/16 */ #define USART_PRESCALER_DIV32 0x00000008U /*!< fclk_pres = fclk/32 */ #define USART_PRESCALER_DIV64 0x00000009U /*!< fclk_pres = fclk/64 */ #define USART_PRESCALER_DIV128 0x0000000AU /*!< fclk_pres = fclk/128 */ #define USART_PRESCALER_DIV256 0x0000000BU /*!< fclk_pres = fclk/256 */ /** * @} */ #endif /* USART_PRESC_PRESCALER */ /** @defgroup USART_Request_Parameters USART Request Parameters * @{ */ #define USART_RXDATA_FLUSH_REQUEST USART_RQR_RXFRQ /*!< Receive Data flush Request */ #define USART_TXDATA_FLUSH_REQUEST USART_RQR_TXFRQ /*!< Transmit data flush Request */ /** * @} */ /** @defgroup USART_Flags USART Flags * Elements values convention: 0xXXXX * - 0xXXXX : Flag mask in the ISR register * @{ */ #if defined(USART_CR1_FIFOEN) #define USART_FLAG_TXFT USART_ISR_TXFT /*!< USART TXFIFO threshold flag */ #define USART_FLAG_RXFT USART_ISR_RXFT /*!< USART RXFIFO threshold flag */ #define USART_FLAG_RXFF USART_ISR_RXFF /*!< USART RXFIFO Full flag */ #define USART_FLAG_TXFE USART_ISR_TXFE /*!< USART TXFIFO Empty flag */ #endif /* USART_CR1_FIFOEN */ #define USART_FLAG_REACK USART_ISR_REACK /*!< USART receive enable acknowledge flag */ #define USART_FLAG_TEACK USART_ISR_TEACK /*!< USART transmit enable acknowledge flag */ #define USART_FLAG_BUSY USART_ISR_BUSY /*!< USART busy flag */ #if defined(USART_CR2_SLVEN) #define USART_FLAG_UDR USART_ISR_UDR /*!< SPI slave underrun error flag */ #endif /* USART_CR2_SLVEN */ #if defined(USART_CR1_FIFOEN) #define USART_FLAG_TXE USART_ISR_TXE_TXFNF /*!< USART transmit data register empty */ #define USART_FLAG_TXFNF USART_ISR_TXE_TXFNF /*!< USART TXFIFO not full */ #else #define USART_FLAG_TXE USART_ISR_TXE /*!< USART transmit data register empty */ #endif /* USART_CR1_FIFOEN */ #define USART_FLAG_RTOF USART_ISR_RTOF /*!< USART receiver timeout flag */ #define USART_FLAG_TC USART_ISR_TC /*!< USART transmission complete */ #if defined(USART_CR1_FIFOEN) #define USART_FLAG_RXNE USART_ISR_RXNE_RXFNE /*!< USART read data register not empty */ #define USART_FLAG_RXFNE USART_ISR_RXNE_RXFNE /*!< USART RXFIFO not empty */ #else #define USART_FLAG_RXNE USART_ISR_RXNE /*!< USART read data register not empty */ #endif /* USART_CR1_FIFOEN */ #define USART_FLAG_IDLE USART_ISR_IDLE /*!< USART idle flag */ #define USART_FLAG_ORE USART_ISR_ORE /*!< USART overrun error */ #define USART_FLAG_NE USART_ISR_NE /*!< USART noise error */ #define USART_FLAG_FE USART_ISR_FE /*!< USART frame error */ #define USART_FLAG_PE USART_ISR_PE /*!< USART parity error */ /** * @} */ /** @defgroup USART_Interrupt_definition USART Interrupts Definition * Elements values convention: 0000ZZZZ0XXYYYYYb * - YYYYY : Interrupt source position in the XX register (5bits) * - XX : Interrupt source register (2bits) * - 01: CR1 register * - 10: CR2 register * - 11: CR3 register * - ZZZZ : Flag position in the ISR register(4bits) * @{ */ #define USART_IT_PE 0x0028U /*!< USART parity error interruption */ #define USART_IT_TXE 0x0727U /*!< USART transmit data register empty interruption */ #if defined(USART_CR1_FIFOEN) #define USART_IT_TXFNF 0x0727U /*!< USART TX FIFO not full interruption */ #endif /* USART_CR1_FIFOEN */ #define USART_IT_TC 0x0626U /*!< USART transmission complete interruption */ #define USART_IT_RXNE 0x0525U /*!< USART read data register not empty interruption */ #if defined(USART_CR1_FIFOEN) #define USART_IT_RXFNE 0x0525U /*!< USART RXFIFO not empty interruption */ #endif /* USART_CR1_FIFOEN */ #define USART_IT_IDLE 0x0424U /*!< USART idle interruption */ #define USART_IT_ERR 0x0060U /*!< USART error interruption */ #define USART_IT_ORE 0x0300U /*!< USART overrun error interruption */ #define USART_IT_NE 0x0200U /*!< USART noise error interruption */ #define USART_IT_FE 0x0100U /*!< USART frame error interruption */ #if defined(USART_CR1_FIFOEN) #define USART_IT_RXFF 0x183FU /*!< USART RXFIFO full interruption */ #define USART_IT_TXFE 0x173EU /*!< USART TXFIFO empty interruption */ #define USART_IT_RXFT 0x1A7CU /*!< USART RXFIFO threshold reached interruption */ #define USART_IT_TXFT 0x1B77U /*!< USART TXFIFO threshold reached interruption */ #endif /* USART_CR1_FIFOEN */ /** * @} */ /** @defgroup USART_IT_CLEAR_Flags USART Interruption Clear Flags * @{ */ #define USART_CLEAR_PEF USART_ICR_PECF /*!< Parity Error Clear Flag */ #define USART_CLEAR_FEF USART_ICR_FECF /*!< Framing Error Clear Flag */ #define USART_CLEAR_NEF USART_ICR_NECF /*!< Noise Error detected Clear Flag */ #define USART_CLEAR_OREF USART_ICR_ORECF /*!< OverRun Error Clear Flag */ #define USART_CLEAR_IDLEF USART_ICR_IDLECF /*!< IDLE line detected Clear Flag */ #define USART_CLEAR_TCF USART_ICR_TCCF /*!< Transmission Complete Clear Flag */ #if defined(USART_CR2_SLVEN) #define USART_CLEAR_UDRF USART_ICR_UDRCF /*!< SPI slave underrun error Clear Flag */ #endif /* USART_CR2_SLVEN */ #if defined(USART_CR1_FIFOEN) #define USART_CLEAR_TXFECF USART_ICR_TXFECF /*!< TXFIFO Empty Clear Flag */ #endif /* USART_CR1_FIFOEN */ #define USART_CLEAR_RTOF USART_ICR_RTOCF /*!< USART receiver timeout clear flag */ /** * @} */ /** @defgroup USART_Interruption_Mask USART Interruption Flags Mask * @{ */ #define USART_IT_MASK 0x001FU /*!< USART interruptions flags mask */ #define USART_CR_MASK 0x00E0U /*!< USART control register mask */ #define USART_CR_POS 5U /*!< USART control register position */ #define USART_ISR_MASK 0x1F00U /*!< USART ISR register mask */ #define USART_ISR_POS 8U /*!< USART ISR register position */ /** * @} */ /** * @} */ /* Exported macros -----------------------------------------------------------*/ /** @defgroup USART_Exported_Macros USART Exported Macros * @{ */ /** @brief Reset USART handle state. * @param __HANDLE__ USART handle. * @retval None */ #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) #define __HAL_USART_RESET_HANDLE_STATE(__HANDLE__) do{ \ (__HANDLE__)->State = HAL_USART_STATE_RESET; \ (__HANDLE__)->MspInitCallback = NULL; \ (__HANDLE__)->MspDeInitCallback = NULL; \ } while(0U) #else #define __HAL_USART_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_USART_STATE_RESET) #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ /** @brief Check whether the specified USART flag is set or not. * @param __HANDLE__ specifies the USART Handle * @param __FLAG__ specifies the flag to check. * This parameter can be one of the following values: * @arg @ref USART_FLAG_TXFT TXFIFO threshold flag * @arg @ref USART_FLAG_RXFT RXFIFO threshold flag * @arg @ref USART_FLAG_RXFF RXFIFO Full flag * @arg @ref USART_FLAG_TXFE TXFIFO Empty flag * @arg @ref USART_FLAG_REACK Receive enable acknowledge flag * @arg @ref USART_FLAG_TEACK Transmit enable acknowledge flag * @arg @ref USART_FLAG_BUSY Busy flag * @arg @ref USART_FLAG_UDR SPI slave underrun error flag * @arg @ref USART_FLAG_TXE Transmit data register empty flag * @arg @ref USART_FLAG_TXFNF TXFIFO not full flag * @arg @ref USART_FLAG_TC Transmission Complete flag * @arg @ref USART_FLAG_RXNE Receive data register not empty flag * @arg @ref USART_FLAG_RXFNE RXFIFO not empty flag * @arg @ref USART_FLAG_RTOF Receiver Timeout flag * @arg @ref USART_FLAG_IDLE Idle Line detection flag * @arg @ref USART_FLAG_ORE OverRun Error flag * @arg @ref USART_FLAG_NE Noise Error flag * @arg @ref USART_FLAG_FE Framing Error flag * @arg @ref USART_FLAG_PE Parity Error flag * @retval The new state of __FLAG__ (TRUE or FALSE). */ #define __HAL_USART_GET_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->ISR & (__FLAG__)) == (__FLAG__)) /** @brief Clear the specified USART pending flag. * @param __HANDLE__ specifies the USART Handle. * @param __FLAG__ specifies the flag to check. * This parameter can be any combination of the following values: * @arg @ref USART_CLEAR_PEF Parity Error Clear Flag * @arg @ref USART_CLEAR_FEF Framing Error Clear Flag * @arg @ref USART_CLEAR_NEF Noise detected Clear Flag * @arg @ref USART_CLEAR_OREF Overrun Error Clear Flag * @arg @ref USART_CLEAR_IDLEF IDLE line detected Clear Flag * @arg @ref USART_CLEAR_TXFECF TXFIFO empty clear Flag * @arg @ref USART_CLEAR_TCF Transmission Complete Clear Flag * @arg @ref USART_CLEAR_RTOF Receiver Timeout clear flag * @arg @ref USART_CLEAR_UDRF SPI slave underrun error Clear Flag * @retval None */ #define __HAL_USART_CLEAR_FLAG(__HANDLE__, __FLAG__) ((__HANDLE__)->Instance->ICR = (__FLAG__)) /** @brief Clear the USART PE pending flag. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_CLEAR_PEFLAG(__HANDLE__) __HAL_USART_CLEAR_FLAG((__HANDLE__), USART_CLEAR_PEF) /** @brief Clear the USART FE pending flag. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_CLEAR_FEFLAG(__HANDLE__) __HAL_USART_CLEAR_FLAG((__HANDLE__), USART_CLEAR_FEF) /** @brief Clear the USART NE pending flag. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_CLEAR_NEFLAG(__HANDLE__) __HAL_USART_CLEAR_FLAG((__HANDLE__), USART_CLEAR_NEF) /** @brief Clear the USART ORE pending flag. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_CLEAR_OREFLAG(__HANDLE__) __HAL_USART_CLEAR_FLAG((__HANDLE__), USART_CLEAR_OREF) /** @brief Clear the USART IDLE pending flag. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_CLEAR_IDLEFLAG(__HANDLE__) __HAL_USART_CLEAR_FLAG((__HANDLE__), USART_CLEAR_IDLEF) #if defined(USART_CR1_FIFOEN) /** @brief Clear the USART TX FIFO empty clear flag. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_CLEAR_TXFECF(__HANDLE__) __HAL_USART_CLEAR_FLAG((__HANDLE__), USART_CLEAR_TXFECF) #endif /* USART_CR1_FIFOEN */ #if defined(USART_CR2_SLVEN) /** @brief Clear SPI slave underrun error flag. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_CLEAR_UDRFLAG(__HANDLE__) __HAL_USART_CLEAR_FLAG((__HANDLE__), USART_CLEAR_UDRF) #endif /* USART_CR2_SLVEN */ /** @brief Enable the specified USART interrupt. * @param __HANDLE__ specifies the USART Handle. * @param __INTERRUPT__ specifies the USART interrupt source to enable. * This parameter can be one of the following values: * @arg @ref USART_IT_RXFF RXFIFO Full interrupt * @arg @ref USART_IT_TXFE TXFIFO Empty interrupt * @arg @ref USART_IT_RXFT RXFIFO threshold interrupt * @arg @ref USART_IT_TXFT TXFIFO threshold interrupt * @arg @ref USART_IT_TXE Transmit Data Register empty interrupt * @arg @ref USART_IT_TXFNF TX FIFO not full interrupt * @arg @ref USART_IT_TC Transmission complete interrupt * @arg @ref USART_IT_RXNE Receive Data register not empty interrupt * @arg @ref USART_IT_RXFNE RXFIFO not empty interrupt * @arg @ref USART_IT_IDLE Idle line detection interrupt * @arg @ref USART_IT_PE Parity Error interrupt * @arg @ref USART_IT_ERR Error interrupt(Frame error, noise error, overrun error) * @retval None */ #define __HAL_USART_ENABLE_IT(__HANDLE__, __INTERRUPT__)\ (((((__INTERRUPT__) & USART_CR_MASK) >> USART_CR_POS) == 1U)?\ ((__HANDLE__)->Instance->CR1 |= (1U << ((__INTERRUPT__) & USART_IT_MASK))): \ ((((__INTERRUPT__) & USART_CR_MASK) >> USART_CR_POS) == 2U)?\ ((__HANDLE__)->Instance->CR2 |= (1U << ((__INTERRUPT__) & USART_IT_MASK))): \ ((__HANDLE__)->Instance->CR3 |= (1U << ((__INTERRUPT__) & USART_IT_MASK)))) /** @brief Disable the specified USART interrupt. * @param __HANDLE__ specifies the USART Handle. * @param __INTERRUPT__ specifies the USART interrupt source to disable. * This parameter can be one of the following values: * @arg @ref USART_IT_RXFF RXFIFO Full interrupt * @arg @ref USART_IT_TXFE TXFIFO Empty interrupt * @arg @ref USART_IT_RXFT RXFIFO threshold interrupt * @arg @ref USART_IT_TXFT TXFIFO threshold interrupt * @arg @ref USART_IT_TXE Transmit Data Register empty interrupt * @arg @ref USART_IT_TXFNF TX FIFO not full interrupt * @arg @ref USART_IT_TC Transmission complete interrupt * @arg @ref USART_IT_RXNE Receive Data register not empty interrupt * @arg @ref USART_IT_RXFNE RXFIFO not empty interrupt * @arg @ref USART_IT_IDLE Idle line detection interrupt * @arg @ref USART_IT_PE Parity Error interrupt * @arg @ref USART_IT_ERR Error interrupt(Frame error, noise error, overrun error) * @retval None */ #define __HAL_USART_DISABLE_IT(__HANDLE__, __INTERRUPT__)\ (((((__INTERRUPT__) & USART_CR_MASK) >> USART_CR_POS) == 1U)?\ ((__HANDLE__)->Instance->CR1 &= ~ (1U << ((__INTERRUPT__) & USART_IT_MASK))): \ ((((__INTERRUPT__) & USART_CR_MASK) >> USART_CR_POS) == 2U)?\ ((__HANDLE__)->Instance->CR2 &= ~ (1U << ((__INTERRUPT__) & USART_IT_MASK))): \ ((__HANDLE__)->Instance->CR3 &= ~ (1U << ((__INTERRUPT__) & USART_IT_MASK)))) /** @brief Check whether the specified USART interrupt has occurred or not. * @param __HANDLE__ specifies the USART Handle. * @param __INTERRUPT__ specifies the USART interrupt source to check. * This parameter can be one of the following values: * @arg @ref USART_IT_RXFF RXFIFO Full interrupt * @arg @ref USART_IT_TXFE TXFIFO Empty interrupt * @arg @ref USART_IT_RXFT RXFIFO threshold interrupt * @arg @ref USART_IT_TXFT TXFIFO threshold interrupt * @arg @ref USART_IT_TXE Transmit Data Register empty interrupt * @arg @ref USART_IT_TXFNF TX FIFO not full interrupt * @arg @ref USART_IT_TC Transmission complete interrupt * @arg @ref USART_IT_RXNE Receive Data register not empty interrupt * @arg @ref USART_IT_RXFNE RXFIFO not empty interrupt * @arg @ref USART_IT_IDLE Idle line detection interrupt * @arg @ref USART_IT_ORE OverRun Error interrupt * @arg @ref USART_IT_NE Noise Error interrupt * @arg @ref USART_IT_FE Framing Error interrupt * @arg @ref USART_IT_PE Parity Error interrupt * @retval The new state of __INTERRUPT__ (SET or RESET). */ #define __HAL_USART_GET_IT(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->ISR\ & (0x01U << (((__INTERRUPT__) & USART_ISR_MASK)>>\ USART_ISR_POS))) != 0U) ? SET : RESET) /** @brief Check whether the specified USART interrupt source is enabled or not. * @param __HANDLE__ specifies the USART Handle. * @param __INTERRUPT__ specifies the USART interrupt source to check. * This parameter can be one of the following values: * @arg @ref USART_IT_RXFF RXFIFO Full interrupt * @arg @ref USART_IT_TXFE TXFIFO Empty interrupt * @arg @ref USART_IT_RXFT RXFIFO threshold interrupt * @arg @ref USART_IT_TXFT TXFIFO threshold interrupt * @arg @ref USART_IT_TXE Transmit Data Register empty interrupt * @arg @ref USART_IT_TXFNF TX FIFO not full interrupt * @arg @ref USART_IT_TC Transmission complete interrupt * @arg @ref USART_IT_RXNE Receive Data register not empty interrupt * @arg @ref USART_IT_RXFNE RXFIFO not empty interrupt * @arg @ref USART_IT_IDLE Idle line detection interrupt * @arg @ref USART_IT_ORE OverRun Error interrupt * @arg @ref USART_IT_NE Noise Error interrupt * @arg @ref USART_IT_FE Framing Error interrupt * @arg @ref USART_IT_PE Parity Error interrupt * @retval The new state of __INTERRUPT__ (SET or RESET). */ #define __HAL_USART_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((((((uint8_t)(__INTERRUPT__)) >> 0x05U) == 0x01U) ?\ (__HANDLE__)->Instance->CR1 : \ (((((uint8_t)(__INTERRUPT__)) >> 0x05U) == 0x02U) ?\ (__HANDLE__)->Instance->CR2 : \ (__HANDLE__)->Instance->CR3)) & (0x01U <<\ (((uint16_t)(__INTERRUPT__)) &\ USART_IT_MASK))) != 0U) ? SET : RESET) /** @brief Clear the specified USART ISR flag, in setting the proper ICR register flag. * @param __HANDLE__ specifies the USART Handle. * @param __IT_CLEAR__ specifies the interrupt clear register flag that needs to be set * to clear the corresponding interrupt. * This parameter can be one of the following values: * @arg @ref USART_CLEAR_PEF Parity Error Clear Flag * @arg @ref USART_CLEAR_FEF Framing Error Clear Flag * @arg @ref USART_CLEAR_NEF Noise detected Clear Flag * @arg @ref USART_CLEAR_OREF Overrun Error Clear Flag * @arg @ref USART_CLEAR_IDLEF IDLE line detected Clear Flag * @arg @ref USART_CLEAR_RTOF Receiver timeout clear flag * @arg @ref USART_CLEAR_TXFECF TXFIFO empty clear Flag * @arg @ref USART_CLEAR_TCF Transmission Complete Clear Flag * @retval None */ #define __HAL_USART_CLEAR_IT(__HANDLE__, __IT_CLEAR__) ((__HANDLE__)->Instance->ICR = (uint32_t)(__IT_CLEAR__)) /** @brief Set a specific USART request flag. * @param __HANDLE__ specifies the USART Handle. * @param __REQ__ specifies the request flag to set. * This parameter can be one of the following values: * @arg @ref USART_RXDATA_FLUSH_REQUEST Receive Data flush Request * @arg @ref USART_TXDATA_FLUSH_REQUEST Transmit data flush Request * * @retval None */ #define __HAL_USART_SEND_REQ(__HANDLE__, __REQ__) ((__HANDLE__)->Instance->RQR |= (uint16_t)(__REQ__)) /** @brief Enable the USART 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 Disable the USART one bit sample method. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_ONE_BIT_SAMPLE_DISABLE(__HANDLE__) ((__HANDLE__)->Instance->CR3 &= ~USART_CR3_ONEBIT) /** @brief Enable USART. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_ENABLE(__HANDLE__) ((__HANDLE__)->Instance->CR1 |= USART_CR1_UE) /** @brief Disable USART. * @param __HANDLE__ specifies the USART Handle. * @retval None */ #define __HAL_USART_DISABLE(__HANDLE__) ((__HANDLE__)->Instance->CR1 &= ~USART_CR1_UE) /** * @} */ /* Private macros --------------------------------------------------------*/ /** @defgroup USART_Private_Macros USART Private Macros * @{ */ #if defined(USART_PRESC_PRESCALER) /** @brief Get USART clock division factor from clock prescaler value. * @param __CLOCKPRESCALER__ USART prescaler value. * @retval USART clock division factor */ #define USART_GET_DIV_FACTOR(__CLOCKPRESCALER__) \ (((__CLOCKPRESCALER__) == USART_PRESCALER_DIV1) ? 1U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV2) ? 2U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV4) ? 4U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV6) ? 6U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV8) ? 8U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV10) ? 10U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV12) ? 12U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV16) ? 16U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV32) ? 32U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV64) ? 64U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV128) ? 128U : \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV256) ? 256U : 1U) /** @brief BRR division operation to set BRR register in 8-bit oversampling mode. * @param __PCLK__ USART clock. * @param __BAUD__ Baud rate set by the user. * @param __CLOCKPRESCALER__ USART prescaler value. * @retval Division result */ #define USART_DIV_SAMPLING8(__PCLK__, __BAUD__, __CLOCKPRESCALER__)\ (((((__PCLK__)/USART_GET_DIV_FACTOR(__CLOCKPRESCALER__))*2U)\ + ((__BAUD__)/2U)) / (__BAUD__)) #else /** @brief BRR division operation to set BRR register in 8-bit oversampling mode. * @param __PCLK__ USART clock. * @param __BAUD__ Baud rate set by the user. * @retval Division result */ #define USART_DIV_SAMPLING8(__PCLK__, __BAUD__) ((((__PCLK__)*2U) + ((__BAUD__)/2U)) / (__BAUD__)) #endif /* USART_PRESC_PRESCALER */ /** @brief Check USART Baud rate. * @param __BAUDRATE__ Baudrate specified by the user. * The maximum Baud Rate is derived from the maximum clock on L4 * divided by the smallest oversampling used on the USART (i.e. 8) * (i.e. 120 MHz on STM32L4Rx/L4Sx, 80 Mhz otherwise) * @retval SET (__BAUDRATE__ is valid) or RESET (__BAUDRATE__ is invalid) */ #if defined(STM32L4R5xx) || defined(STM32L4R7xx) || defined(STM32L4R9xx) || defined(STM32L4S5xx) || defined(STM32L4S7xx) || defined(STM32L4S9xx) #define IS_USART_BAUDRATE(__BAUDRATE__) ((__BAUDRATE__) <= 15000000U) #else #define IS_USART_BAUDRATE(__BAUDRATE__) ((__BAUDRATE__) <= 10000000U) #endif /* STM32L4R5xx || STM32L4R7xx || STM32L4R9xx || STM32L4S5xx || STM32L4S7xx || STM32L4S9xx */ /** * @brief Ensure that USART frame number of stop bits is valid. * @param __STOPBITS__ USART frame number of stop bits. * @retval SET (__STOPBITS__ is valid) or RESET (__STOPBITS__ is invalid) */ #define IS_USART_STOPBITS(__STOPBITS__) (((__STOPBITS__) == USART_STOPBITS_0_5) || \ ((__STOPBITS__) == USART_STOPBITS_1) || \ ((__STOPBITS__) == USART_STOPBITS_1_5) || \ ((__STOPBITS__) == USART_STOPBITS_2)) /** * @brief Ensure that USART frame parity is valid. * @param __PARITY__ USART frame parity. * @retval SET (__PARITY__ is valid) or RESET (__PARITY__ is invalid) */ #define IS_USART_PARITY(__PARITY__) (((__PARITY__) == USART_PARITY_NONE) || \ ((__PARITY__) == USART_PARITY_EVEN) || \ ((__PARITY__) == USART_PARITY_ODD)) /** * @brief Ensure that USART communication mode is valid. * @param __MODE__ USART communication mode. * @retval SET (__MODE__ is valid) or RESET (__MODE__ is invalid) */ #define IS_USART_MODE(__MODE__) ((((__MODE__) & 0xFFFFFFF3U) == 0x00U) && ((__MODE__) != 0x00U)) /** * @brief Ensure that USART clock state is valid. * @param __CLOCK__ USART clock state. * @retval SET (__CLOCK__ is valid) or RESET (__CLOCK__ is invalid) */ #define IS_USART_CLOCK(__CLOCK__) (((__CLOCK__) == USART_CLOCK_DISABLE) || \ ((__CLOCK__) == USART_CLOCK_ENABLE)) /** * @brief Ensure that USART frame polarity is valid. * @param __CPOL__ USART frame polarity. * @retval SET (__CPOL__ is valid) or RESET (__CPOL__ is invalid) */ #define IS_USART_POLARITY(__CPOL__) (((__CPOL__) == USART_POLARITY_LOW) || ((__CPOL__) == USART_POLARITY_HIGH)) /** * @brief Ensure that USART frame phase is valid. * @param __CPHA__ USART frame phase. * @retval SET (__CPHA__ is valid) or RESET (__CPHA__ is invalid) */ #define IS_USART_PHASE(__CPHA__) (((__CPHA__) == USART_PHASE_1EDGE) || ((__CPHA__) == USART_PHASE_2EDGE)) /** * @brief Ensure that USART frame last bit clock pulse setting is valid. * @param __LASTBIT__ USART frame last bit clock pulse setting. * @retval SET (__LASTBIT__ is valid) or RESET (__LASTBIT__ is invalid) */ #define IS_USART_LASTBIT(__LASTBIT__) (((__LASTBIT__) == USART_LASTBIT_DISABLE) || \ ((__LASTBIT__) == USART_LASTBIT_ENABLE)) /** * @brief Ensure that USART request parameter is valid. * @param __PARAM__ USART request parameter. * @retval SET (__PARAM__ is valid) or RESET (__PARAM__ is invalid) */ #define IS_USART_REQUEST_PARAMETER(__PARAM__) (((__PARAM__) == USART_RXDATA_FLUSH_REQUEST) || \ ((__PARAM__) == USART_TXDATA_FLUSH_REQUEST)) #if defined(USART_PRESC_PRESCALER) /** * @brief Ensure that USART Prescaler is valid. * @param __CLOCKPRESCALER__ USART Prescaler value. * @retval SET (__CLOCKPRESCALER__ is valid) or RESET (__CLOCKPRESCALER__ is invalid) */ #define IS_USART_PRESCALER(__CLOCKPRESCALER__) (((__CLOCKPRESCALER__) == USART_PRESCALER_DIV1) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV2) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV4) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV6) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV8) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV10) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV12) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV16) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV32) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV64) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV128) || \ ((__CLOCKPRESCALER__) == USART_PRESCALER_DIV256)) #endif /* USART_PRESC_PRESCALER */ /** * @} */ /* Include USART HAL Extended module */ #include "stm32l4xx_hal_usart_ex.h" /* Exported functions --------------------------------------------------------*/ /** @addtogroup USART_Exported_Functions USART Exported Functions * @{ */ /** @addtogroup USART_Exported_Functions_Group1 Initialization and de-initialization functions * @{ */ /* Initialization and 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); /* Callbacks Register/UnRegister functions ***********************************/ #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) HAL_StatusTypeDef HAL_USART_RegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID, pUSART_CallbackTypeDef pCallback); HAL_StatusTypeDef HAL_USART_UnRegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID); #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ /** * @} */ /** @addtogroup USART_Exported_Functions_Group2 IO operation functions * @{ */ /* IO operation functions *****************************************************/ HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, const 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, const uint8_t *pTxData, uint8_t *pRxData, uint16_t Size, uint32_t Timeout); HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, const 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, const uint8_t *pTxData, uint8_t *pRxData, uint16_t Size); HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, const 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, const 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_TxHalfCpltCallback(USART_HandleTypeDef *husart); void HAL_USART_TxCpltCallback(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_Group4 Peripheral State and Error functions * @{ */ /* Peripheral State and Error functions ***************************************/ HAL_USART_StateTypeDef HAL_USART_GetState(const USART_HandleTypeDef *husart); uint32_t HAL_USART_GetError(const USART_HandleTypeDef *husart); /** * @} */ /** * @} */ /** * @} */ /** * @} */ #ifdef __cplusplus } #endif #endif /* STM32L4xx_HAL_USART_H */