You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
710 lines
23 KiB
710 lines
23 KiB
8 years ago
|
/**
|
||
|
******************************************************************************
|
||
|
* @file stm32f1xx_hal_dma.c
|
||
|
* @author MCD Application Team
|
||
|
* @version V1.0.4
|
||
|
* @date 29-April-2016
|
||
|
* @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 or Normal mode, Channel Priority level, Source and Destination Increment mode,
|
||
|
using HAL_DMA_Init() function.
|
||
|
|
||
|
(#) 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.
|
||
|
*** 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_DMAy_Channelx_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).
|
||
|
|
||
|
*** 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) 2016 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 "stm32f1xx_hal.h"
|
||
|
|
||
|
/** @addtogroup STM32F1xx_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);
|
||
|
/**
|
||
|
* @}
|
||
|
*/
|
||
|
|
||
|
/* Exported functions ---------------------------------------------------------*/
|
||
|
|
||
|
/** @defgroup DMA_Exported_Functions DMA Exported Functions
|
||
|
* @{
|
||
|
*/
|
||
|
|
||
|
/** @defgroup DMA_Exported_Functions_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 handle allocation */
|
||
|
if(hdma == 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));
|
||
|
|
||
|
if(hdma->State == HAL_DMA_STATE_RESET)
|
||
|
{
|
||
|
/* Allocate lock resource and initialize it */
|
||
|
hdma->Lock = HAL_UNLOCKED;
|
||
|
}
|
||
|
|
||
|
/* 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 handle allocation */
|
||
|
if(hdma == NULL)
|
||
|
{
|
||
|
return HAL_ERROR;
|
||
|
}
|
||
|
|
||
|
/* Check the parameters */
|
||
|
assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
|
||
|
|
||
|
/* Check the DMA peripheral state */
|
||
|
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));
|
||
|
|
||
|
/* 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;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @}
|
||
|
*/
|
||
|
|
||
|
/** @defgroup DMA_Exported_Functions_Group2 Input and Output 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 tick */
|
||
|
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);
|
||
|
|
||
|
/* Change the DMA state */
|
||
|
hdma->State = HAL_DMA_STATE_TIMEOUT;
|
||
|
|
||
|
/* Process Unlocked */
|
||
|
__HAL_UNLOCK(hdma);
|
||
|
|
||
|
return HAL_TIMEOUT;
|
||
|
}
|
||
|
}
|
||
|
/* Change the DMA state */
|
||
|
hdma->State = HAL_DMA_STATE_READY;
|
||
|
|
||
|
/* Process Unlocked */
|
||
|
__HAL_UNLOCK(hdma);
|
||
|
|
||
|
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 tick */
|
||
|
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;
|
||
|
|
||
|
}
|
||
|
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 of half buffer 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 != 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 != 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 != NULL)
|
||
|
{
|
||
|
/* Transfer complete callback */
|
||
|
hdma->XferCpltCallback(hdma);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @}
|
||
|
*/
|
||
|
|
||
|
/** @defgroup DMA_Exported_Functions_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 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****/
|