| /** |
| ****************************************************************************** |
| * @file stm32f7xx_hal_usart_ex.h |
| * @author MCD Application Team |
| * @brief Header file of USART HAL Extended 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 STM32F7xx_HAL_USART_EX_H |
| #define STM32F7xx_HAL_USART_EX_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32f7xx_hal_def.h" |
| |
| /** @addtogroup STM32F7xx_HAL_Driver |
| * @{ |
| */ |
| |
| /** @addtogroup USARTEx |
| * @{ |
| */ |
| |
| /* Exported types ------------------------------------------------------------*/ |
| /* Exported constants --------------------------------------------------------*/ |
| /** @defgroup USARTEx_Exported_Constants USARTEx Exported Constants |
| * @{ |
| */ |
| |
| /** @defgroup USARTEx_Word_Length USARTEx Word Length |
| * @{ |
| */ |
| #define USART_WORDLENGTH_7B (USART_CR1_M1) /*!< 7-bit long USART frame */ |
| #define USART_WORDLENGTH_8B (0x00000000U) /*!< 8-bit long USART frame */ |
| #define USART_WORDLENGTH_9B (USART_CR1_M0) /*!< 9-bit long USART frame */ |
| /** |
| * @} |
| */ |
| |
| |
| /** |
| * @} |
| */ |
| |
| /* Private macros ------------------------------------------------------------*/ |
| /** @defgroup USARTEx_Private_Macros USARTEx Private Macros |
| * @{ |
| */ |
| |
| /** @brief Compute the USART mask to apply to retrieve the received data |
| * according to the word length and to the parity bits activation. |
| * @note If PCE = 1, the parity bit is not included in the data extracted |
| * by the reception API(). |
| * This masking operation is not carried out in the case of |
| * DMA transfers. |
| * @param __HANDLE__ specifies the USART Handle. |
| * @retval None, the mask to apply to USART RDR register is stored in (__HANDLE__)->Mask field. |
| */ |
| #define USART_MASK_COMPUTATION(__HANDLE__) \ |
| do { \ |
| if ((__HANDLE__)->Init.WordLength == USART_WORDLENGTH_9B) \ |
| { \ |
| if ((__HANDLE__)->Init.Parity == USART_PARITY_NONE) \ |
| { \ |
| (__HANDLE__)->Mask = 0x01FFU; \ |
| } \ |
| else \ |
| { \ |
| (__HANDLE__)->Mask = 0x00FFU; \ |
| } \ |
| } \ |
| else if ((__HANDLE__)->Init.WordLength == USART_WORDLENGTH_8B) \ |
| { \ |
| if ((__HANDLE__)->Init.Parity == USART_PARITY_NONE) \ |
| { \ |
| (__HANDLE__)->Mask = 0x00FFU; \ |
| } \ |
| else \ |
| { \ |
| (__HANDLE__)->Mask = 0x007FU; \ |
| } \ |
| } \ |
| else if ((__HANDLE__)->Init.WordLength == USART_WORDLENGTH_7B) \ |
| { \ |
| if ((__HANDLE__)->Init.Parity == USART_PARITY_NONE) \ |
| { \ |
| (__HANDLE__)->Mask = 0x007FU; \ |
| } \ |
| else \ |
| { \ |
| (__HANDLE__)->Mask = 0x003FU; \ |
| } \ |
| } \ |
| else \ |
| { \ |
| (__HANDLE__)->Mask = 0x0000U; \ |
| } \ |
| } while(0U) |
| |
| /** |
| * @brief Ensure that USART frame length is valid. |
| * @param __LENGTH__ USART frame length. |
| * @retval SET (__LENGTH__ is valid) or RESET (__LENGTH__ is invalid) |
| */ |
| #define IS_USART_WORD_LENGTH(__LENGTH__) (((__LENGTH__) == USART_WORDLENGTH_7B) || \ |
| ((__LENGTH__) == USART_WORDLENGTH_8B) || \ |
| ((__LENGTH__) == USART_WORDLENGTH_9B)) |
| |
| |
| /** |
| * @} |
| */ |
| |
| /* Exported functions --------------------------------------------------------*/ |
| /** @addtogroup USARTEx_Exported_Functions |
| * @{ |
| */ |
| |
| /** @addtogroup USARTEx_Exported_Functions_Group1 |
| * @{ |
| */ |
| |
| /* IO operation functions *****************************************************/ |
| |
| /** |
| * @} |
| */ |
| |
| /** @addtogroup USARTEx_Exported_Functions_Group2 |
| * @{ |
| */ |
| |
| /* Peripheral Control functions ***********************************************/ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* STM32F7xx_HAL_USART_EX_H */ |
| |
