view Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_dma_ex.h @ 697:d55817a11f4c

Improvment key event detection: In previous version the evaluation of a button event was called in the 100ms callback. Assuming an event is signaled at the in line for 100ms there is a potential risk to loose a button event. To avoid this scenarion the evaluation function was moved into the extint callback (called ~50+xms) and the line readback tim was reduced to 40ms. Reminder: This function is not called in the main loop because the main loop is not executed in UART mode => movement would cause key events to not beeing detected
author Ideenmodellierer
date Sun, 25 Sep 2022 21:09:18 +0200
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>&copy; 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****/