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diff Common/Drivers/STM32F4xx_HAL_DRIVER_v120/Src/stm32f4xx_hal_dma_ex.c @ 38:5f11787b4f42
include in ostc4 repository
author | heinrichsweikamp |
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date | Sat, 28 Apr 2018 11:52:34 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Common/Drivers/STM32F4xx_HAL_DRIVER_v120/Src/stm32f4xx_hal_dma_ex.c Sat Apr 28 11:52:34 2018 +0200 @@ -0,0 +1,307 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_dma_ex.c + * @author MCD Application Team + * @version V1.2.0 + * @date 26-December-2014 + * @brief DMA Extension HAL module driver + * This file provides firmware functions to manage the following + * functionalities of the DMA Extension peripheral: + * + Extended features functions + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + The DMA Extension HAL driver can be used as follows: + (#) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function + for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode. + + -@- In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed. + -@- When Multi (Double) Buffer mode is enabled the, transfer is circular by default. + -@- In Multi (Double) buffer mode, it is possible to update the base address for + the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled. + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2014 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. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +/** @defgroup DMAEx DMAEx + * @brief DMA Extended HAL module driver + * @{ + */ + +#ifdef HAL_DMA_MODULE_ENABLED + +/* Private types -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private Constants ---------------------------------------------------------*/ +/* Private macros ------------------------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ +/** @addtogroup DMAEx_Private_Functions + * @{ + */ +static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength); +/** + * @} + */ + +/* Exported functions ---------------------------------------------------------*/ + +/** @addtogroup DMAEx_Exported_Functions + * @{ + */ + + +/** @addtogroup DMAEx_Exported_Functions_Group1 + * +@verbatim + =============================================================================== + ##### Extended features functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Configure the source, destination address and data length and + Start MultiBuffer DMA transfer + (+) Configure the source, destination address and data length and + Start MultiBuffer DMA transfer with interrupt + (+) Change on the fly the memory0 or memory1 address. + +@endverbatim + * @{ + */ + + +/** + * @brief Starts the multi_buffer DMA Transfer. + * @param hdma : pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Stream. + * @param SrcAddress: The source memory Buffer address + * @param DstAddress: The destination memory Buffer address + * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer + * @param DataLength: The length of data to be transferred from source to destination + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength) +{ + /* Process Locked */ + __HAL_LOCK(hdma); + + /* Current memory buffer used is Memory 0 */ + if((hdma->Instance->CR & DMA_SxCR_CT) == 0) + { + hdma->State = HAL_DMA_STATE_BUSY_MEM0; + } + /* Current memory buffer used is Memory 1 */ + else if((hdma->Instance->CR & DMA_SxCR_CT) != 0) + { + hdma->State = HAL_DMA_STATE_BUSY_MEM1; + } + + /* Check the parameters */ + assert_param(IS_DMA_BUFFER_SIZE(DataLength)); + + /* Disable the peripheral */ + __HAL_DMA_DISABLE(hdma); + + /* Enable the double buffer mode */ + hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM; + + /* Configure DMA Stream destination address */ + hdma->Instance->M1AR = SecondMemAddress; + + /* Configure the source, destination address and the data length */ + DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength); + + /* Enable the peripheral */ + __HAL_DMA_ENABLE(hdma); + + return HAL_OK; +} + +/** + * @brief Starts the multi_buffer DMA Transfer with interrupt enabled. + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Stream. + * @param SrcAddress: The source memory Buffer address + * @param DstAddress: The destination memory Buffer address + * @param SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer + * @param DataLength: The length of data to be transferred from source to destination + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength) +{ + /* Process Locked */ + __HAL_LOCK(hdma); + + /* Current memory buffer used is Memory 0 */ + if((hdma->Instance->CR & DMA_SxCR_CT) == 0) + { + hdma->State = HAL_DMA_STATE_BUSY_MEM0; + } + /* Current memory buffer used is Memory 1 */ + else if((hdma->Instance->CR & DMA_SxCR_CT) != 0) + { + hdma->State = HAL_DMA_STATE_BUSY_MEM1; + } + + /* Check the parameters */ + assert_param(IS_DMA_BUFFER_SIZE(DataLength)); + + /* Disable the peripheral */ + __HAL_DMA_DISABLE(hdma); + + /* Enable the Double buffer mode */ + hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM; + + /* Configure DMA Stream destination address */ + hdma->Instance->M1AR = SecondMemAddress; + + /* Configure the source, destination address and the data length */ + DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength); + + /* Enable the transfer complete interrupt */ + __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC); + + /* Enable the Half transfer interrupt */ + __HAL_DMA_ENABLE_IT(hdma, DMA_IT_HT); + + /* Enable the transfer Error interrupt */ + __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TE); + + /* Enable the fifo Error interrupt */ + __HAL_DMA_ENABLE_IT(hdma, DMA_IT_FE); + + /* Enable the direct mode Error interrupt */ + __HAL_DMA_ENABLE_IT(hdma, DMA_IT_DME); + + /* Enable the peripheral */ + __HAL_DMA_ENABLE(hdma); + + return HAL_OK; +} + +/** + * @brief Change the memory0 or memory1 address on the fly. + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Stream. + * @param Address: The new address + * @param memory: the memory to be changed, This parameter can be one of + * the following values: + * MEMORY0 / + * MEMORY1 + * @note The MEMORY0 address can be changed only when the current transfer use + * MEMORY1 and the MEMORY1 address can be changed only when the current + * transfer use MEMORY0. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory) +{ + if(memory == MEMORY0) + { + /* change the memory0 address */ + hdma->Instance->M0AR = Address; + } + else + { + /* change the memory1 address */ + hdma->Instance->M1AR = Address; + } + + return HAL_OK; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup DMAEx_Private_Functions + * @{ + */ + +/** + * @brief Set the DMA Transfer parameter. + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Stream. + * @param SrcAddress: The source memory Buffer address + * @param DstAddress: The destination memory Buffer address + * @param DataLength: The length of data to be transferred from source to destination + * @retval HAL status + */ +static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength) +{ + /* Configure DMA Stream data length */ + hdma->Instance->NDTR = DataLength; + + /* Peripheral to Memory */ + if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH) + { + /* Configure DMA Stream destination address */ + hdma->Instance->PAR = DstAddress; + + /* Configure DMA Stream source address */ + hdma->Instance->M0AR = SrcAddress; + } + /* Memory to Peripheral */ + else + { + /* Configure DMA Stream source address */ + hdma->Instance->PAR = SrcAddress; + + /* Configure DMA Stream destination address */ + hdma->Instance->M0AR = DstAddress; + } +} + +/** + * @} + */ + +#endif /* HAL_DMA_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/