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Diffstat (limited to 'Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c')
| -rw-r--r-- | Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c new file mode 100644 index 0000000..45b901e --- /dev/null +++ b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c @@ -0,0 +1,307 @@ +/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_dma_ex.c
+ * @author MCD Application Team
+ * @version V1.3.2
+ * @date 26-June-2015
+ * @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) 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.
+ *
+ ******************************************************************************
+ */
+
+/* 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****/
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