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Diff: TARGET_NUCLEO_L476RG/stm32l4xx_hal_usart_ex.h
- Revision:
- 107:4f6c30876dfa
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_NUCLEO_L476RG/stm32l4xx_hal_usart_ex.h Wed Sep 16 15:32:31 2015 +0100 @@ -0,0 +1,159 @@ +/** + ****************************************************************************** + * @file stm32l4xx_hal_usart_ex.h + * @author MCD Application Team + * @version V1.0.0 + * @date 26-June-2015 + * @brief Header file of USART HAL Extended module. + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Define to prevent recursive inclusion -------------------------------------*/ +#ifndef __STM32L4xx_HAL_USART_EX_H +#define __STM32L4xx_HAL_USART_EX_H + +#ifdef __cplusplus + extern "C" { +#endif + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l4xx_hal_def.h" + +/** @addtogroup STM32L4xx_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 ((uint32_t)0x00000000) /*!< 8-bit long USART frame */ +#define USART_WORDLENGTH_9B ((uint32_t)USART_CR1_M0) /*!< 9-bit long USART frame */ +/** + * @} + */ + +/** + * @} + */ + +/* Exported functions --------------------------------------------------------*/ + +/* 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 = 0x01FF ; \ + } \ + else \ + { \ + (__HANDLE__)->Mask = 0x00FF ; \ + } \ + } \ + else if ((__HANDLE__)->Init.WordLength == USART_WORDLENGTH_8B) \ + { \ + if ((__HANDLE__)->Init.Parity == USART_PARITY_NONE) \ + { \ + (__HANDLE__)->Mask = 0x00FF ; \ + } \ + else \ + { \ + (__HANDLE__)->Mask = 0x007F ; \ + } \ + } \ + else if ((__HANDLE__)->Init.WordLength == USART_WORDLENGTH_7B) \ + { \ + if ((__HANDLE__)->Init.Parity == USART_PARITY_NONE) \ + { \ + (__HANDLE__)->Mask = 0x007F ; \ + } \ + else \ + { \ + (__HANDLE__)->Mask = 0x003F ; \ + } \ + } \ +} while(0) + +/** + * @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 --------------------------------------------------------*/ + +/** + * @} + */ + +/** + * @} + */ + +#ifdef __cplusplus +} +#endif + +#endif /* __STM32L4xx_HAL_USART_EX_H */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/