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Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_dma.c
- Revision:
- 394:83f921546702
- Parent:
- 393:17d2d502961d
- Child:
- 395:bfce16e86ea4
--- a/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_dma.c Fri Nov 07 12:00:11 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,707 +0,0 @@
-/**
- ******************************************************************************
- * @file stm32l1xx_hal_dma.c
- * @author MCD Application Team
- * @version V1.0.0
- * @date 5-September-2014
- * @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 Channel
- (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 Channel, program the required configuration through the following parameters:
- Transfer Direction, Source and Destination data formats,
- Circular, Normal or peripheral flow control mode, Channel 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.
-
- *** DMA HAL driver macros list ***
- =============================================
- [..]
- Below the list of most used macros in DMA HAL driver.
-
- (+) __HAL_DMA_ENABLE: Enable the specified DMA Channel.
- (+) __HAL_DMA_DISABLE: Disable the specified DMA Channel.
- (+) __HAL_DMA_GET_FLAG: Get the DMA Channel pending flags.
- (+) __HAL_DMA_CLEAR_FLAG: Clear the DMA Channel pending flags.
- (+) __HAL_DMA_ENABLE_IT: Enable the specified DMA Channel interrupts.
- (+) __HAL_DMA_DISABLE_IT: Disable the specified DMA Channel interrupts.
- (+) __HAL_DMA_GET_IT_SOURCE: Check whether the specified DMA Channel 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) 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 "stm32l1xx_hal.h"
-
-/** @addtogroup STM32L1xx_HAL_Driver
- * @{
- */
-
-/** @defgroup DMA DMA
- * @brief DMA HAL module driver
- * @{
- */
-
-#ifdef HAL_DMA_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/** @defgroup DMA_Private_Constants DMA Private Constants
-* @{
-*/
-#define HAL_TIMEOUT_DMA_ABORT ((uint32_t)1000) /* 1s */
-/**
- * @}
- */
-
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/** @defgroup DMA_Private_Functions DMA Private Functions
-* @{
-*/
-static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
-/**
- * @}
- */
-
-/* Private functions ---------------------------------------------------------*/
-
-/** @defgroup DMA_Exported_Functions DMA Exported Functions
- * @{
- */
-
-/** @defgroup DMA_Group1 Initialization and de-initialization functions
- * @brief Initialization and de-initialization functions
- *
-@verbatim
- ===============================================================================
- ##### Initialization and de-initialization functions #####
- ===============================================================================
- [..]
- This section provides functions allowing to initialize the DMA Channel source
- and destination addresses, incrementation and data sizes, transfer direction,
- circular/normal mode selection, memory-to-memory mode selection and Channel 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 Channel.
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_DMA_Init(DMA_HandleTypeDef *hdma)
-{
- uint32_t tmp = 0;
-
- /* Check the DMA peripheral state */
- if(hdma == HAL_NULL)
- {
- return HAL_ERROR;
- }
-
- /* Check the parameters */
- assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
- 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));
-
- /* Change DMA peripheral state */
- hdma->State = HAL_DMA_STATE_BUSY;
-
- /* Get the CR register value */
- tmp = hdma->Instance->CCR;
-
- /* Clear PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR bits */
- tmp &= ((uint32_t)~(DMA_CCR_PL | DMA_CCR_MSIZE | DMA_CCR_PSIZE | \
- DMA_CCR_MINC | DMA_CCR_PINC | DMA_CCR_CIRC | \
- DMA_CCR_DIR));
-
- /* Prepare the DMA Channel configuration */
- tmp |= hdma->Init.Direction |
- hdma->Init.PeriphInc | hdma->Init.MemInc |
- hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment |
- hdma->Init.Mode | hdma->Init.Priority;
-
- /* Write to DMA Channel CR register */
- hdma->Instance->CCR = tmp;
-
- /* Initialise 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 Channel.
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_DMA_DeInit(DMA_HandleTypeDef *hdma)
-{
- /* Check the DMA peripheral state */
- if(hdma == HAL_NULL)
- {
- return HAL_ERROR;
- }
-
- /* Check the DMA peripheral handle */
- if(hdma->State == HAL_DMA_STATE_BUSY)
- {
- return HAL_ERROR;
- }
-
- /* Disable the selected DMA Channelx */
- __HAL_DMA_DISABLE(hdma);
-
- /* Reset DMA Channel control register */
- hdma->Instance->CCR = 0;
-
- /* Reset DMA Channel Number of Data to Transfer register */
- hdma->Instance->CNDTR = 0;
-
- /* Reset DMA Channel peripheral address register */
- hdma->Instance->CPAR = 0;
-
- /* Reset DMA Channel memory address register */
- hdma->Instance->CMAR = 0;
-
- /* Clear all flags */
- __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_HT_FLAG_INDEX(hdma));
-
- /* Initialise 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;
-}
-
-/**
- * @}
- */
-
-/** @defgroup DMA_Group2 I/O operation functions
- * @brief I/O operation functions
- *
-@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 Channel.
- * @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 Channel.
- * @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 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 Channel.
- *
- * @note After disabling a DMA Channel, a check for wait until the DMA Channel is
- * effectively disabled is added. If a Channel is disabled
- * while a data transfer is ongoing, the current data will be transferred
- * and the Channel 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 = 0x00;
-
- /* Disable the channel */
- __HAL_DMA_DISABLE(hdma);
-
- /* Get timeout */
- tickstart = HAL_GetTick();
-
- /* Check if the DMA Channel is effectively disabled */
- while((hdma->Instance->CCR & DMA_CCR_EN) != 0)
- {
- /* Check for the Timeout */
- if((HAL_GetTick() - tickstart ) > HAL_TIMEOUT_DMA_ABORT)
- {
- /* Update error code */
- SET_BIT(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 Channel.
- * @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;
- uint32_t tickstart = 0x00;
-
- /* 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 timeout */
- tickstart = HAL_GetTick();
-
- while(__HAL_DMA_GET_FLAG(hdma, temp) == RESET)
- {
- if((__HAL_DMA_GET_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)) != RESET))
- {
- /* Clear the transfer error flags */
- __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma));
-
- /* Update error code */
- SET_BIT(hdma->ErrorCode, HAL_DMA_ERROR_TE);
-
- /* 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 */
- SET_BIT(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)
- {
- /* Clear the transfer complete flag */
- __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma));
-
- /* The selected Channelx EN bit is cleared (DMA is disabled and
- all transfers are complete) */
- hdma->State = HAL_DMA_STATE_READY;
-
- /* Process unlocked */
- __HAL_UNLOCK(hdma);
- }
- else
- {
- /* Clear the half transfer complete flag */
- __HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma));
-
- /* The selected Channelx EN bit is cleared (DMA is disabled and
- all transfers are complete) */
- hdma->State = HAL_DMA_STATE_READY_HALF;
- /* Process unlocked */
- __HAL_UNLOCK(hdma);
- }
-
- 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 Channel.
- * @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 */
- SET_BIT(hdma->ErrorCode, HAL_DMA_ERROR_TE);
-
- /* Change the DMA state */
- hdma->State = HAL_DMA_STATE_ERROR;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hdma);
-
- if (hdma->XferErrorCallback != HAL_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)
- {
- /* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */
- if((hdma->Instance->CCR & DMA_CCR_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;
-
- if(hdma->XferHalfCpltCallback != HAL_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->CCR & DMA_CCR_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 */
- SET_BIT(hdma->ErrorCode, HAL_DMA_ERROR_NONE);
-
- /* Change the DMA state */
- hdma->State = HAL_DMA_STATE_READY;
-
- /* Process Unlocked */
- __HAL_UNLOCK(hdma);
-
- if(hdma->XferCpltCallback != HAL_NULL)
- {
- /* Transfer complete callback */
- hdma->XferCpltCallback(hdma);
- }
- }
-}
-}
-
-/**
- * @}
- */
-
-/** @defgroup DMA_Group3 Peripheral State functions
- * @brief Peripheral State functions
- *
-@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 Channel.
- * @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 Channel.
- * @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 Channel.
- * @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)
-{
- /* Configure DMA Channel data length */
- hdma->Instance->CNDTR = DataLength;
-
- /* Peripheral to Memory */
- if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH)
- {
- /* Configure DMA Channel destination address */
- hdma->Instance->CPAR = DstAddress;
-
- /* Configure DMA Channel source address */
- hdma->Instance->CMAR = SrcAddress;
- }
- /* Memory to Peripheral */
- else
- {
- /* Configure DMA Channel source address */
- hdma->Instance->CPAR = SrcAddress;
-
- /* Configure DMA Channel destination address */
- hdma->Instance->CMAR = DstAddress;
- }
-}
-
-/**
- * @}
- */
-
-
-#endif /* HAL_DMA_MODULE_ENABLED */
-
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
