309 lines
9.8 KiB
C
309 lines
9.8 KiB
C
/**
|
|
******************************************************************************
|
|
* @file stm32f7xx_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
|
|
*
|
|
* Copyright (c) 2017 STMicroelectronics.
|
|
* All rights reserved.
|
|
*
|
|
* This software is licensed under terms that can be found in the LICENSE file in
|
|
* the root directory of this software component.
|
|
* If no LICENSE file comes with this software, it is provided AS-IS.
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "stm32f7xx_hal.h"
|
|
|
|
/** @addtogroup STM32F7xx_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;
|
|
}
|
|
|
|
/* 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 */
|
|
/**
|
|
* @}
|
|
*/
|
|
|
|
/**
|
|
* @}
|
|
*/
|
|
|