| /** |
| ****************************************************************************** |
| * @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****/ |
