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- /**
- ******************************************************************************
- * @file stm32l0xx_hal_usart_ex.h
- * @author MCD Application Team
- * @brief Header file of USART HAL Extended module.
- ******************************************************************************
- * @attention
- *
- * <h2><center>© Copyright (c) 2016 STMicroelectronics.
- * All rights reserved.</center></h2>
- *
- * This software component is licensed by ST under BSD 3-Clause license,
- * the "License"; You may not use this file except in compliance with the
- * License. You may obtain a copy of the License at:
- * opensource.org/licenses/BSD-3-Clause
- *
- ******************************************************************************
- */
-
- /* Define to prevent recursive inclusion -------------------------------------*/
- #ifndef STM32L0xx_HAL_USART_EX_H
- #define STM32L0xx_HAL_USART_EX_H
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /* Includes ------------------------------------------------------------------*/
- #include "stm32l0xx_hal_def.h"
-
- /** @addtogroup STM32L0xx_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 ((uint32_t)USART_CR1_M1) /*!< 7-bit long USART frame */
- #define USART_WORDLENGTH_8B 0x00000000U /*!< 8-bit long USART frame */
- #define USART_WORDLENGTH_9B ((uint32_t)USART_CR1_M0) /*!< 9-bit long USART frame */
- /**
- * @}
- */
-
-
-
- /**
- * @}
- */
-
- /* Private macros ------------------------------------------------------------*/
- /** @defgroup USARTEx_Private_Macros USARTEx Private Macros
- * @{
- */
-
- /** @brief Report the USART clock source.
- * @param __HANDLE__ specifies the USART Handle.
- * @param __CLOCKSOURCE__ output variable.
- * @retval the USART clocking source, written in __CLOCKSOURCE__.
- */
- #if defined (STM32L051xx) || defined (STM32L052xx) || defined (STM32L053xx) || defined (STM32L061xx) || defined (STM32L062xx) || defined (STM32L063xx)
-
- #define USART_GETCLOCKSOURCE(__HANDLE__,__CLOCKSOURCE__) \
- do { \
- if((__HANDLE__)->Instance == USART1) \
- { \
- switch(__HAL_RCC_GET_USART1_SOURCE()) \
- { \
- case RCC_USART1CLKSOURCE_PCLK2: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_PCLK2; \
- break; \
- case RCC_USART1CLKSOURCE_HSI: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_HSI; \
- break; \
- case RCC_USART1CLKSOURCE_SYSCLK: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_SYSCLK; \
- break; \
- case RCC_USART1CLKSOURCE_LSE: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_LSE; \
- break; \
- default: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_UNDEFINED; \
- break; \
- } \
- } \
- else if((__HANDLE__)->Instance == USART2) \
- { \
- switch(__HAL_RCC_GET_USART2_SOURCE()) \
- { \
- case RCC_USART2CLKSOURCE_PCLK1: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_PCLK1; \
- break; \
- case RCC_USART2CLKSOURCE_HSI: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_HSI; \
- break; \
- case RCC_USART2CLKSOURCE_SYSCLK: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_SYSCLK; \
- break; \
- case RCC_USART2CLKSOURCE_LSE: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_LSE; \
- break; \
- default: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_UNDEFINED; \
- break; \
- } \
- } \
- else \
- { \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_UNDEFINED; \
- } \
- } while(0U)
-
- #elif defined(STM32L071xx) || defined (STM32L081xx) || defined(STM32L072xx) || defined (STM32L082xx) || defined(STM32L073xx) || defined (STM32L083xx)
-
- #define USART_GETCLOCKSOURCE(__HANDLE__,__CLOCKSOURCE__) \
- do { \
- if((__HANDLE__)->Instance == USART1) \
- { \
- switch(__HAL_RCC_GET_USART1_SOURCE()) \
- { \
- case RCC_USART1CLKSOURCE_PCLK2: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_PCLK2; \
- break; \
- case RCC_USART1CLKSOURCE_HSI: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_HSI; \
- break; \
- case RCC_USART1CLKSOURCE_SYSCLK: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_SYSCLK; \
- break; \
- case RCC_USART1CLKSOURCE_LSE: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_LSE; \
- break; \
- default: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_UNDEFINED; \
- break; \
- } \
- } \
- else if((__HANDLE__)->Instance == USART2) \
- { \
- switch(__HAL_RCC_GET_USART2_SOURCE()) \
- { \
- case RCC_USART2CLKSOURCE_PCLK1: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_PCLK1; \
- break; \
- case RCC_USART2CLKSOURCE_HSI: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_HSI; \
- break; \
- case RCC_USART2CLKSOURCE_SYSCLK: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_SYSCLK; \
- break; \
- case RCC_USART2CLKSOURCE_LSE: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_LSE; \
- break; \
- default: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_UNDEFINED; \
- break; \
- } \
- } \
- else if((__HANDLE__)->Instance == USART4) \
- { \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_PCLK1; \
- } \
- else if((__HANDLE__)->Instance == USART5) \
- { \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_PCLK1; \
- } \
- else \
- { \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_UNDEFINED; \
- } \
- } while(0U)
-
- #else
-
- #define USART_GETCLOCKSOURCE(__HANDLE__,__CLOCKSOURCE__) \
- do { \
- if((__HANDLE__)->Instance == USART2) \
- { \
- switch(__HAL_RCC_GET_USART2_SOURCE()) \
- { \
- case RCC_USART2CLKSOURCE_PCLK1: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_PCLK1; \
- break; \
- case RCC_USART2CLKSOURCE_HSI: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_HSI; \
- break; \
- case RCC_USART2CLKSOURCE_SYSCLK: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_SYSCLK; \
- break; \
- case RCC_USART2CLKSOURCE_LSE: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_LSE; \
- break; \
- default: \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_UNDEFINED; \
- break; \
- } \
- } \
- else \
- { \
- (__CLOCKSOURCE__) = USART_CLOCKSOURCE_UNDEFINED; \
- } \
- } while(0U)
-
- #endif
-
- /** @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 /* STM32L0xx_HAL_USART_EX_H */
-
- /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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