171 lines
6.1 KiB
C
171 lines
6.1 KiB
C
/**
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******************************************************************************
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* @file stm32f7xx_hal_usart_ex.h
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* @author MCD Application Team
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* @brief Header file of USART HAL Extended module.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Define to prevent recursive inclusion -------------------------------------*/
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#ifndef STM32F7xx_HAL_USART_EX_H
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#define STM32F7xx_HAL_USART_EX_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f7xx_hal_def.h"
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/** @addtogroup STM32F7xx_HAL_Driver
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* @{
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*/
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/** @addtogroup USARTEx
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* @{
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*/
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/* Exported types ------------------------------------------------------------*/
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/* Exported constants --------------------------------------------------------*/
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/** @defgroup USARTEx_Exported_Constants USARTEx Exported Constants
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* @{
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*/
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/** @defgroup USARTEx_Word_Length USARTEx Word Length
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* @{
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*/
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#define USART_WORDLENGTH_7B (USART_CR1_M1) /*!< 7-bit long USART frame */
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#define USART_WORDLENGTH_8B (0x00000000U) /*!< 8-bit long USART frame */
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#define USART_WORDLENGTH_9B (USART_CR1_M0) /*!< 9-bit long USART frame */
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/**
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* @}
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*/
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/**
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* @}
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*/
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/* Private macros ------------------------------------------------------------*/
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/** @defgroup USARTEx_Private_Macros USARTEx Private Macros
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* @{
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*/
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/** @brief Compute the USART mask to apply to retrieve the received data
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* according to the word length and to the parity bits activation.
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* @note If PCE = 1, the parity bit is not included in the data extracted
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* by the reception API().
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* This masking operation is not carried out in the case of
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* DMA transfers.
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* @param __HANDLE__ specifies the USART Handle.
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* @retval None, the mask to apply to USART RDR register is stored in (__HANDLE__)->Mask field.
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*/
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#define USART_MASK_COMPUTATION(__HANDLE__) \
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do { \
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if ((__HANDLE__)->Init.WordLength == USART_WORDLENGTH_9B) \
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{ \
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if ((__HANDLE__)->Init.Parity == USART_PARITY_NONE) \
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{ \
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(__HANDLE__)->Mask = 0x01FFU; \
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} \
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else \
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{ \
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(__HANDLE__)->Mask = 0x00FFU; \
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} \
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} \
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else if ((__HANDLE__)->Init.WordLength == USART_WORDLENGTH_8B) \
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{ \
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if ((__HANDLE__)->Init.Parity == USART_PARITY_NONE) \
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{ \
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(__HANDLE__)->Mask = 0x00FFU; \
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} \
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else \
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{ \
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(__HANDLE__)->Mask = 0x007FU; \
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} \
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} \
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else if ((__HANDLE__)->Init.WordLength == USART_WORDLENGTH_7B) \
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{ \
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if ((__HANDLE__)->Init.Parity == USART_PARITY_NONE) \
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{ \
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(__HANDLE__)->Mask = 0x007FU; \
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} \
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else \
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{ \
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(__HANDLE__)->Mask = 0x003FU; \
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} \
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} \
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else \
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{ \
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(__HANDLE__)->Mask = 0x0000U; \
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} \
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} while(0U)
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/**
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* @brief Ensure that USART frame length is valid.
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* @param __LENGTH__ USART frame length.
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* @retval SET (__LENGTH__ is valid) or RESET (__LENGTH__ is invalid)
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*/
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#define IS_USART_WORD_LENGTH(__LENGTH__) (((__LENGTH__) == USART_WORDLENGTH_7B) || \
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((__LENGTH__) == USART_WORDLENGTH_8B) || \
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((__LENGTH__) == USART_WORDLENGTH_9B))
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/**
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* @}
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*/
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/* Exported functions --------------------------------------------------------*/
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/** @addtogroup USARTEx_Exported_Functions
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* @{
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*/
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/** @addtogroup USARTEx_Exported_Functions_Group1
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* @{
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*/
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/* IO operation functions *****************************************************/
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/**
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* @}
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*/
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/** @addtogroup USARTEx_Exported_Functions_Group2
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* @{
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*/
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/* Peripheral Control functions ***********************************************/
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* STM32F7xx_HAL_USART_EX_H */
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