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Diffstat (limited to 'Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c')
| -rw-r--r-- | Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c | 928 |
1 files changed, 928 insertions, 0 deletions
diff --git a/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c new file mode 100644 index 0000000..b899d85 --- /dev/null +++ b/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c @@ -0,0 +1,928 @@ +/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_dma.c
+ * @author MCD Application Team
+ * @version V1.3.2
+ * @date 26-June-2015
+ * @brief DMA HAL module driver.
+ *
+ * This file provides firmware functions to manage the following
+ * functionalities of the Direct Memory Access (DMA) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral State and errors functions
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ (#) Enable and configure the peripheral to be connected to the DMA Stream
+ (except for internal SRAM/FLASH memories: no initialization is
+ necessary) please refer to Reference manual for connection between peripherals
+ and DMA requests .
+
+ (#) For a given Stream, program the required configuration through the following parameters:
+ Transfer Direction, Source and Destination data formats,
+ Circular, Normal or peripheral flow control mode, Stream Priority level,
+ Source and Destination Increment mode, FIFO mode and its Threshold (if needed),
+ Burst mode for Source and/or Destination (if needed) using HAL_DMA_Init() function.
+
+ *** Polling mode IO operation ***
+ =================================
+ [..]
+ (+) Use HAL_DMA_Start() to start DMA transfer after the configuration of Source
+ address and destination address and the Length of data to be transferred
+ (+) Use HAL_DMA_PollForTransfer() to poll for the end of current transfer, in this
+ case a fixed Timeout can be configured by User depending from his application.
+
+ *** Interrupt mode IO operation ***
+ ===================================
+ [..]
+ (+) Configure the DMA interrupt priority using HAL_NVIC_SetPriority()
+ (+) Enable the DMA IRQ handler using HAL_NVIC_EnableIRQ()
+ (+) Use HAL_DMA_Start_IT() to start DMA transfer after the configuration of
+ Source address and destination address and the Length of data to be transferred. In this
+ case the DMA interrupt is configured
+ (+) Use HAL_DMA_IRQHandler() called under DMA_IRQHandler() Interrupt subroutine
+ (+) At the end of data transfer HAL_DMA_IRQHandler() function is executed and user can
+ add his own function by customization of function pointer XferCpltCallback and
+ XferErrorCallback (i.e a member of DMA handle structure).
+ [..]
+ (#) Use HAL_DMA_GetState() function to return the DMA state and HAL_DMA_GetError() in case of error
+ detection.
+
+ (#) Use HAL_DMA_Abort() function to abort the current transfer
+
+ -@- In Memory-to-Memory transfer mode, Circular mode is not allowed.
+
+ -@- The FIFO is used mainly to reduce bus usage and to allow data packing/unpacking: it is
+ possible to set different Data Sizes for the Peripheral and the Memory (ie. you can set
+ Half-Word data size for the peripheral to access its data register and set Word data size
+ for the Memory to gain in access time. Each two half words will be packed and written in
+ a single access to a Word in the Memory).
+
+ -@- When FIFO is disabled, it is not allowed to configure different Data Sizes for Source
+ and Destination. In this case the Peripheral Data Size will be applied to both Source
+ and Destination.
+
+ *** DMA HAL driver macros list ***
+ =============================================
+ [..]
+ Below the list of most used macros in DMA HAL driver.
+
+ (+) __HAL_DMA_ENABLE: Enable the specified DMA Stream.
+ (+) __HAL_DMA_DISABLE: Disable the specified DMA Stream.
+ (+) __HAL_DMA_GET_FS: Return the current DMA Stream FIFO filled level.
+ (+) __HAL_DMA_GET_FLAG: Get the DMA Stream pending flags.
+ (+) __HAL_DMA_CLEAR_FLAG: Clear the DMA Stream pending flags.
+ (+) __HAL_DMA_ENABLE_IT: Enable the specified DMA Stream interrupts.
+ (+) __HAL_DMA_DISABLE_IT: Disable the specified DMA Stream interrupts.
+ (+) __HAL_DMA_GET_IT_SOURCE: Check whether the specified DMA Stream interrupt has occurred or not.
+
+ [..]
+ (@) You can refer to the DMA HAL driver header file for more useful macros
+
+ @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 DMA DMA
+ * @brief DMA HAL module driver
+ * @{
+ */
+
+#ifdef HAL_DMA_MODULE_ENABLED
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/** @addtogroup DMA_Private_Constants
+ * @{
+ */
+ #define HAL_TIMEOUT_DMA_ABORT ((uint32_t)1000) /* 1s */
+/**
+ * @}
+ */
+/* Private macros ------------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/** @addtogroup DMA_Private_Functions
+ * @{
+ */
+static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
+/**
+ * @}
+ */
+
+/* Exported functions ---------------------------------------------------------*/
+/** @addtogroup DMA_Exported_Functions
+ * @{
+ */
+
+/** @addtogroup DMA_Exported_Functions_Group1
+ *
+@verbatim
+ ===============================================================================
+ ##### Initialization and de-initialization functions #####
+ ===============================================================================
+ [..]
+ This section provides functions allowing to initialize the DMA Stream source
+ and destination addresses, incrementation and data sizes, transfer direction,
+ circular/normal mode selection, memory-to-memory mode selection and Stream priority value.
+ [..]
+ The HAL_DMA_Init() function follows the DMA configuration procedures as described in
+ reference manual.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the DMA according to the specified
+ * parameters in the DMA_InitTypeDef and create the associated handle.
+ * @param hdma: Pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA Stream.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DMA_Init(DMA_HandleTypeDef *hdma)
+{
+ uint32_t tmp = 0;
+
+ /* Check the DMA peripheral state */
+ if(hdma == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_DMA_STREAM_ALL_INSTANCE(hdma->Instance));
+ assert_param(IS_DMA_CHANNEL(hdma->Init.Channel));
+ assert_param(IS_DMA_DIRECTION(hdma->Init.Direction));
+ assert_param(IS_DMA_PERIPHERAL_INC_STATE(hdma->Init.PeriphInc));
+ assert_param(IS_DMA_MEMORY_INC_STATE(hdma->Init.MemInc));
+ assert_param(IS_DMA_PERIPHERAL_DATA_SIZE(hdma->Init.PeriphDataAlignment));
+ assert_param(IS_DMA_MEMORY_DATA_SIZE(hdma->Init.MemDataAlignment));
+ assert_param(IS_DMA_MODE(hdma->Init.Mode));
+ assert_param(IS_DMA_PRIORITY(hdma->Init.Priority));
+ assert_param(IS_DMA_FIFO_MODE_STATE(hdma->Init.FIFOMode));
+ /* Check the memory burst, peripheral burst and FIFO threshold parameters only
+ when FIFO mode is enabled */
+ if(hdma->Init.FIFOMode != DMA_FIFOMODE_DISABLE)
+ {
+ assert_param(IS_DMA_FIFO_THRESHOLD(hdma->Init.FIFOThreshold));
+ assert_param(IS_DMA_MEMORY_BURST(hdma->Init.MemBurst));
+ assert_param(IS_DMA_PERIPHERAL_BURST(hdma->Init.PeriphBurst));
+ }
+
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_BUSY;
+
+ /* Get the CR register value */
+ tmp = hdma->Instance->CR;
+
+ /* Clear CHSEL, MBURST, PBURST, PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR, CT and DBM bits */
+ tmp &= ((uint32_t)~(DMA_SxCR_CHSEL | DMA_SxCR_MBURST | DMA_SxCR_PBURST | \
+ DMA_SxCR_PL | DMA_SxCR_MSIZE | DMA_SxCR_PSIZE | \
+ DMA_SxCR_MINC | DMA_SxCR_PINC | DMA_SxCR_CIRC | \
+ DMA_SxCR_DIR | DMA_SxCR_CT | DMA_SxCR_DBM));
+
+ /* Prepare the DMA Stream configuration */
+ tmp |= hdma->Init.Channel | hdma->Init.Direction |
+ hdma->Init.PeriphInc | hdma->Init.MemInc |
+ hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment |
+ hdma->Init.Mode | hdma->Init.Priority;
+
+ /* the Memory burst and peripheral burst are not used when the FIFO is disabled */
+ if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE)
+ {
+ /* Get memory burst and peripheral burst */
+ tmp |= hdma->Init.MemBurst | hdma->Init.PeriphBurst;
+ }
+
+ /* Write to DMA Stream CR register */
+ hdma->Instance->CR = tmp;
+
+ /* Get the FCR register value */
+ tmp = hdma->Instance->FCR;
+
+ /* Clear Direct mode and FIFO threshold bits */
+ tmp &= (uint32_t)~(DMA_SxFCR_DMDIS | DMA_SxFCR_FTH);
+
+ /* Prepare the DMA Stream FIFO configuration */
+ tmp |= hdma->Init.FIFOMode;
+
+ /* the FIFO threshold is not used when the FIFO mode is disabled */
+ if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE)
+ {
+ /* Get the FIFO threshold */
+ tmp |= hdma->Init.FIFOThreshold;
+ }
+
+ /* Write to DMA Stream FCR */
+ hdma->Instance->FCR = tmp;
+
+ /* Initialize the error code */
+ hdma->ErrorCode = HAL_DMA_ERROR_NONE;
+
+ /* Initialize the DMA state */
+ hdma->State = HAL_DMA_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitializes the DMA peripheral
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA Stream.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DMA_DeInit(DMA_HandleTypeDef *hdma)
+{
+ /* Check the DMA peripheral state */
+ if(hdma == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the DMA peripheral state */
+ if(hdma->State == HAL_DMA_STATE_BUSY)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Disable the selected DMA Streamx */
+ __HAL_DMA_DISABLE(hdma);
+
+ /* Reset DMA Streamx control register */
+ hdma->Instance->CR = 0;
+
+ /* Reset DMA Streamx number of data to transfer register */
+ hdma->Instance->NDTR = 0;
+
+ /* Reset DMA Streamx peripheral address register */
+ hdma->Instance->PAR = 0;
+
+ /* Reset DMA Streamx memory 0 address register */
+ hdma->Instance->M0AR = 0;
+
+ /* Reset DMA Streamx memory 1 address register */
+ hdma->Instance->M1AR = 0;
+
+ /* Reset DMA Streamx FIFO control register */
+ hdma->Instance->FCR = (uint32_t)0x00000021;
+
+ /* Clear all flags */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma));
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma));
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
+
+ /* Initialize the error code */
+ hdma->ErrorCode = HAL_DMA_ERROR_NONE;
+
+ /* Initialize the DMA state */
+ hdma->State = HAL_DMA_STATE_RESET;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hdma);
+
+ return HAL_OK;
+}
+
+/**
+ * @}
+ */
+
+/** @addtogroup DMA_Exported_Functions_Group2
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to:
+ (+) Configure the source, destination address and data length and Start DMA transfer
+ (+) Configure the source, destination address and data length and
+ Start DMA transfer with interrupt
+ (+) Abort DMA transfer
+ (+) Poll for transfer complete
+ (+) Handle DMA interrupt request
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Starts the 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 DataLength: The length of data to be transferred from source to destination
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DMA_Start(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
+{
+ /* Process locked */
+ __HAL_LOCK(hdma);
+
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_BUSY;
+
+ /* Check the parameters */
+ assert_param(IS_DMA_BUFFER_SIZE(DataLength));
+
+ /* Disable the peripheral */
+ __HAL_DMA_DISABLE(hdma);
+
+ /* Configure the source, destination address and the data length */
+ DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
+
+ /* Enable the Peripheral */
+ __HAL_DMA_ENABLE(hdma);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Start the 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 DataLength: The length of data to be transferred from source to destination
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DMA_Start_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
+{
+ /* Process locked */
+ __HAL_LOCK(hdma);
+
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_BUSY;
+
+ /* Check the parameters */
+ assert_param(IS_DMA_BUFFER_SIZE(DataLength));
+
+ /* Disable the peripheral */
+ __HAL_DMA_DISABLE(hdma);
+
+ /* Configure the source, destination address and the data length */
+ DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
+
+ /* Enable the transfer complete interrupt */
+ __HAL_DMA_ENABLE_IT(hdma, DMA_IT_TC);
+
+ /* Enable the Half transfer complete 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 Aborts the DMA Transfer.
+ * @param hdma : pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA Stream.
+ *
+ * @note After disabling a DMA Stream, a check for wait until the DMA Stream is
+ * effectively disabled is added. If a Stream is disabled
+ * while a data transfer is ongoing, the current data will be transferred
+ * and the Stream will be effectively disabled only after the transfer of
+ * this single data is finished.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DMA_Abort(DMA_HandleTypeDef *hdma)
+{
+ uint32_t tickstart = 0;
+
+ /* Disable the stream */
+ __HAL_DMA_DISABLE(hdma);
+
+ /* Get tick */
+ tickstart = HAL_GetTick();
+
+ /* Check if the DMA Stream is effectively disabled */
+ while((hdma->Instance->CR & DMA_SxCR_EN) != 0)
+ {
+ /* Check for the Timeout */
+ if((HAL_GetTick() - tickstart ) > HAL_TIMEOUT_DMA_ABORT)
+ {
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+
+ /* Change the DMA state */
+ hdma->State = HAL_DMA_STATE_TIMEOUT;
+
+ return HAL_TIMEOUT;
+ }
+ }
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+
+ /* Change the DMA state*/
+ hdma->State = HAL_DMA_STATE_READY;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Polling for transfer complete.
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA Stream.
+ * @param CompleteLevel: Specifies the DMA level complete.
+ * @param Timeout: Timeout duration.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_DMA_PollForTransfer(DMA_HandleTypeDef *hdma, uint32_t CompleteLevel, uint32_t Timeout)
+{
+ uint32_t temp, tmp, tmp1, tmp2;
+ uint32_t tickstart = 0;
+
+ /* Get the level transfer complete flag */
+ if(CompleteLevel == HAL_DMA_FULL_TRANSFER)
+ {
+ /* Transfer Complete flag */
+ temp = __HAL_DMA_GET_TC_FLAG_INDEX(hdma);
+ }
+ else
+ {
+ /* Half Transfer Complete flag */
+ temp = __HAL_DMA_GET_HT_FLAG_INDEX(hdma);
+ }
+
+ /* Get tick */
+ tickstart = HAL_GetTick();
+
+ while(__HAL_DMA_GET_FLAG(hdma, temp) == RESET)
+ {
+ tmp = __HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
+ tmp1 = __HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma));
+ tmp2 = __HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma));
+ if((tmp != RESET) || (tmp1 != RESET) || (tmp2 != RESET))
+ {
+ if(tmp != RESET)
+ {
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_TE;
+
+ /* Clear the transfer error flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
+ }
+ if(tmp1 != RESET)
+ {
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_FE;
+
+ /* Clear the FIFO error flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma));
+ }
+ if(tmp2 != RESET)
+ {
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_DME;
+
+ /* Clear the Direct Mode error flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma));
+ }
+ /* Change the DMA state */
+ hdma->State= HAL_DMA_STATE_ERROR;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+
+ return HAL_ERROR;
+ }
+ /* Check for the Timeout */
+ if(Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
+ {
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_TIMEOUT;
+
+ /* Change the DMA state */
+ hdma->State = HAL_DMA_STATE_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ if(CompleteLevel == HAL_DMA_FULL_TRANSFER)
+ {
+ /* Multi_Buffering mode enabled */
+ if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
+ {
+ /* Clear the half transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
+ /* Clear the transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
+
+ /* Current memory buffer used is Memory 0 */
+ if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+ {
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_READY_MEM0;
+ }
+ /* Current memory buffer used is Memory 1 */
+ else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+ {
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_READY_MEM1;
+ }
+ }
+ else
+ {
+ /* Clear the half transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
+ /* Clear the transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
+
+ /* The selected Streamx EN bit is cleared (DMA is disabled and all transfers
+ are complete) */
+ hdma->State = HAL_DMA_STATE_READY_MEM0;
+ }
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+ }
+ else
+ {
+ /* Multi_Buffering mode enabled */
+ if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
+ {
+ /* Clear the half transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
+
+ /* Current memory buffer used is Memory 0 */
+ if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+ {
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
+ }
+ /* Current memory buffer used is Memory 1 */
+ else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+ {
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_READY_HALF_MEM1;
+ }
+ }
+ else
+ {
+ /* Clear the half transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
+
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handles DMA interrupt request.
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA Stream.
+ * @retval None
+ */
+void HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma)
+{
+ /* Transfer Error Interrupt management ***************************************/
+ if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)) != RESET)
+ {
+ if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TE) != RESET)
+ {
+ /* Disable the transfer error interrupt */
+ __HAL_DMA_DISABLE_IT(hdma, DMA_IT_TE);
+
+ /* Clear the transfer error flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
+
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_TE;
+
+ /* Change the DMA state */
+ hdma->State = HAL_DMA_STATE_ERROR;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+
+ if(hdma->XferErrorCallback != NULL)
+ {
+ /* Transfer error callback */
+ hdma->XferErrorCallback(hdma);
+ }
+ }
+ }
+ /* FIFO Error Interrupt management ******************************************/
+ if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma)) != RESET)
+ {
+ if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_FE) != RESET)
+ {
+ /* Disable the FIFO Error interrupt */
+ __HAL_DMA_DISABLE_IT(hdma, DMA_IT_FE);
+
+ /* Clear the FIFO error flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma));
+
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_FE;
+
+ /* Change the DMA state */
+ hdma->State = HAL_DMA_STATE_ERROR;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+
+ if(hdma->XferErrorCallback != NULL)
+ {
+ /* Transfer error callback */
+ hdma->XferErrorCallback(hdma);
+ }
+ }
+ }
+ /* Direct Mode Error Interrupt management ***********************************/
+ if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma)) != RESET)
+ {
+ if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_DME) != RESET)
+ {
+ /* Disable the direct mode Error interrupt */
+ __HAL_DMA_DISABLE_IT(hdma, DMA_IT_DME);
+
+ /* Clear the direct mode error flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma));
+
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_DME;
+
+ /* Change the DMA state */
+ hdma->State = HAL_DMA_STATE_ERROR;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+
+ if(hdma->XferErrorCallback != NULL)
+ {
+ /* Transfer error callback */
+ hdma->XferErrorCallback(hdma);
+ }
+ }
+ }
+ /* Half Transfer Complete Interrupt management ******************************/
+ if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma)) != RESET)
+ {
+ if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_HT) != RESET)
+ {
+ /* Multi_Buffering mode enabled */
+ if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
+ {
+ /* Clear the half transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
+
+ /* Current memory buffer used is Memory 0 */
+ if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+ {
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
+ }
+ /* Current memory buffer used is Memory 1 */
+ else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+ {
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_READY_HALF_MEM1;
+ }
+ }
+ else
+ {
+ /* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */
+ if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
+ {
+ /* Disable the half transfer interrupt */
+ __HAL_DMA_DISABLE_IT(hdma, DMA_IT_HT);
+ }
+ /* Clear the half transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
+
+ /* Change DMA peripheral state */
+ hdma->State = HAL_DMA_STATE_READY_HALF_MEM0;
+ }
+
+ if(hdma->XferHalfCpltCallback != NULL)
+ {
+ /* Half transfer callback */
+ hdma->XferHalfCpltCallback(hdma);
+ }
+ }
+ }
+ /* Transfer Complete Interrupt management ***********************************/
+ if(__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma)) != RESET)
+ {
+ if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TC) != RESET)
+ {
+ if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0)
+ {
+ /* Clear the transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
+
+ /* Current memory buffer used is Memory 1 */
+ if((hdma->Instance->CR & DMA_SxCR_CT) == 0)
+ {
+ if(hdma->XferM1CpltCallback != NULL)
+ {
+ /* Transfer complete Callback for memory1 */
+ hdma->XferM1CpltCallback(hdma);
+ }
+ }
+ /* Current memory buffer used is Memory 0 */
+ else if((hdma->Instance->CR & DMA_SxCR_CT) != 0)
+ {
+ if(hdma->XferCpltCallback != NULL)
+ {
+ /* Transfer complete Callback for memory0 */
+ hdma->XferCpltCallback(hdma);
+ }
+ }
+ }
+ /* Disable the transfer complete interrupt if the DMA mode is not CIRCULAR */
+ else
+ {
+ if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0)
+ {
+ /* Disable the transfer complete interrupt */
+ __HAL_DMA_DISABLE_IT(hdma, DMA_IT_TC);
+ }
+ /* Clear the transfer complete flag */
+ __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
+
+ /* Update error code */
+ hdma->ErrorCode |= HAL_DMA_ERROR_NONE;
+
+ /* Change the DMA state */
+ hdma->State = HAL_DMA_STATE_READY_MEM0;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hdma);
+
+ if(hdma->XferCpltCallback != NULL)
+ {
+ /* Transfer complete callback */
+ hdma->XferCpltCallback(hdma);
+ }
+ }
+ }
+ }
+}
+
+/**
+ * @}
+ */
+
+/** @addtogroup DMA_Exported_Functions_Group3
+ *
+@verbatim
+ ===============================================================================
+ ##### State and Errors functions #####
+ ===============================================================================
+ [..]
+ This subsection provides functions allowing to
+ (+) Check the DMA state
+ (+) Get error code
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Returns the DMA state.
+ * @param hdma: pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA Stream.
+ * @retval HAL state
+ */
+HAL_DMA_StateTypeDef HAL_DMA_GetState(DMA_HandleTypeDef *hdma)
+{
+ return hdma->State;
+}
+
+/**
+ * @brief Return the DMA error code
+ * @param hdma : pointer to a DMA_HandleTypeDef structure that contains
+ * the configuration information for the specified DMA Stream.
+ * @retval DMA Error Code
+ */
+uint32_t HAL_DMA_GetError(DMA_HandleTypeDef *hdma)
+{
+ return hdma->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup DMA_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Sets 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_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength)
+{
+ /* Clear DBM bit */
+ hdma->Instance->CR &= (uint32_t)(~DMA_SxCR_DBM);
+
+ /* 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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