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Diffstat (limited to 'lib/f4/stm32f4xx_hal_dma_ex.c')
| -rw-r--r-- | lib/f4/stm32f4xx_hal_dma_ex.c | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/lib/f4/stm32f4xx_hal_dma_ex.c b/lib/f4/stm32f4xx_hal_dma_ex.c new file mode 100644 index 0000000..bfcc1fd --- /dev/null +++ b/lib/f4/stm32f4xx_hal_dma_ex.c @@ -0,0 +1,315 @@ +/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_dma_ex.c
+ * @author MCD Application Team
+ * @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) 2017 STMicroelectronics.
+ * All rights reserved.</center></h2>
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* 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)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Check the parameters */
+ assert_param(IS_DMA_BUFFER_SIZE(DataLength));
+
+ /* Memory-to-memory transfer not supported in double buffering mode */
+ if (hdma->Init.Direction == DMA_MEMORY_TO_MEMORY)
+ {
+ hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED;
+ status = HAL_ERROR;
+ }
+ else
+ {
+ /* Process Locked */
+ __HAL_LOCK(hdma);
+
+ if(HAL_DMA_STATE_READY == hdma->State)
+ {
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_BUSY;
+
+ /* 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);
+ }
+ else
+ {
+ /* Return error status */
+ status = HAL_BUSY;
+ }
+ }
+ return status;
+}
+
+/**
+ * @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)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Check the parameters */
+ assert_param(IS_DMA_BUFFER_SIZE(DataLength));
+
+ /* Memory-to-memory transfer not supported in double buffering mode */
+ if (hdma->Init.Direction == DMA_MEMORY_TO_MEMORY)
+ {
+ hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED;
+ return HAL_ERROR;
+ }
+
+ /* Check callback functions */
+ if ((NULL == hdma->XferCpltCallback) || (NULL == hdma->XferM1CpltCallback) || (NULL == hdma->XferErrorCallback))
+ {
+ hdma->ErrorCode = HAL_DMA_ERROR_PARAM;
+ return HAL_ERROR;
+ }
+
+ /* Process locked */
+ __HAL_LOCK(hdma);
+
+ if(HAL_DMA_STATE_READY == hdma->State)
+ {
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_BUSY;
+
+ /* Initialize the error code */
+ hdma->ErrorCode = HAL_DMA_ERROR_NONE;
+
+ /* 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);
+
+ /* Clear all flags */
+ __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
+ __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
+ __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
+ __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma));
+ __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma));
+
+ /* Enable Common interrupts*/
+ hdma->Instance->CR |= DMA_IT_TC | DMA_IT_TE | DMA_IT_DME;
+ hdma->Instance->FCR |= DMA_IT_FE;
+
+ if((hdma->XferHalfCpltCallback != NULL) || (hdma->XferM1HalfCpltCallback != NULL))
+ {
+ hdma->Instance->CR |= DMA_IT_HT;
+ }
+
+ /* Enable the peripheral */
+ __HAL_DMA_ENABLE(hdma);
+ }
+ else
+ {
+ /* Process unlocked */
+ __HAL_UNLOCK(hdma);
+
+ /* Return error status */
+ status = HAL_BUSY;
+ }
+ return status;
+}
+
+/**
+ * @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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