Diff: TARGET_DISCO_L476VG/stm32l4xx_hal_usart_ex.h

Revision:

107:4f6c30876dfa

Child:

122:f9eeca106725

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_DISCO_L476VG/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>&copy; 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****/