Mercurial > public > ostc4
view Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_dma_ex.h @ 976:0b81ac558e89 Evo_2_23
Devbugfix UART buffer cleaning:
In the previous version a buffer cleaning function was used which resets the ringbuffer read index. As result the processing of data was stopped until the DMA write comes to the index 0. When reaching it the complete buffer was proceeded including possibly invalid data.
The usage of the cleanbuffer function was replaced by the flush buffer function (meaning the data is discarded but the data index is maintained). There was already a function for this. Because the function was 99% the same as the read function, it was integrated into the ReadData function. Calling the function with parameter flush = 1 will result in a buffer flush.
The workaround of the previous revision was updated to only be applied in case a DiveO2 sensor is operated in stand alone mode.
| author | Ideenmodellierer |
|---|---|
| date | Wed, 29 Jan 2025 17:21:20 +0100 |
| parents | c78bcbd5deda |
| children |
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/** ****************************************************************************** * @file stm32f4xx_hal_dma_ex.h * @author MCD Application Team * @brief Header file of DMA HAL extension module. ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2017 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 __STM32F4xx_HAL_DMA_EX_H #define __STM32F4xx_HAL_DMA_EX_H #ifdef __cplusplus extern "C" { #endif /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_hal_def.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @addtogroup DMAEx * @{ */ /* Exported types ------------------------------------------------------------*/ /** @defgroup DMAEx_Exported_Types DMAEx Exported Types * @brief DMAEx Exported types * @{ */ /** * @brief HAL DMA Memory definition */ typedef enum { MEMORY0 = 0x00U, /*!< Memory 0 */ MEMORY1 = 0x01U /*!< Memory 1 */ }HAL_DMA_MemoryTypeDef; /** * @} */ /* Exported functions --------------------------------------------------------*/ /** @defgroup DMAEx_Exported_Functions DMAEx Exported Functions * @brief DMAEx Exported functions * @{ */ /** @defgroup DMAEx_Exported_Functions_Group1 Extended features functions * @brief Extended features functions * @{ */ /* IO operation functions *******************************************************/ HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength); HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength); HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory); /** * @} */ /** * @} */ /* Private functions ---------------------------------------------------------*/ /** @defgroup DMAEx_Private_Functions DMAEx Private Functions * @brief DMAEx Private functions * @{ */ /** * @} */ /** * @} */ /** * @} */ #ifdef __cplusplus } #endif #endif /*__STM32F4xx_HAL_DMA_EX_H*/ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
