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B3M38SPD seminar project - beehive monitor with LoRa reporting
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spd-lorabees/Drivers/STM32L0xx_HAL_Driver/Src/stm32l0xx_hal_dma.c

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/**
******************************************************************************
* @file stm32l0xx_hal_dma.c
* @author MCD Application Team
* @brief DMA HAL module driver.
*
* This file provides firmware functions to manage the following
* functionalities of the Direct Memory Access (DMA) peripheral:
* + Initialization/de-initialization functions
* + I/O operation functions
* + Peripheral State 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).
(#) For a given Channel, program the required configuration through the following parameters:
Channel request, Transfer Direction, Source and Destination data formats,
Circular, Normal or peripheral flow control mode, Channel Priority level,
Source and Destination Increment mode 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.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; 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 "stm32l0xx_hal.h"
/** @addtogroup STM32L0xx_HAL_Driver
* @{
*/
#ifdef HAL_DMA_MODULE_ENABLED
/** @addtogroup DMA DMA
* @brief DMA HAL module driver
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/** @addtogroup DMA_Private
*
* @{
*/
#define HAL_TIMEOUT_DMA_ABORT ((uint32_t)1000U) /* 1s */
static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength);
/**
* @}
*/
/** @addtogroup DMA_Exported_Functions DMA Exported Functions
* @{
*/
/** @addtogroup DMA_Exported_Functions_Group1
* @brief Initialization/de-initialization functions
*
@verbatim
===============================================================================
##### Initialization and de-initialization functions #####
===============================================================================
[..] This section provides functions allowing to:
(+) Initialize and configure the DMA
(+) De-Initialize the DMA
@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 = 0U;
/* Check the DMA peripheral state */
if(hdma == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance));
assert_param(IS_DMA_ALL_REQUEST(hdma->Init.Request));
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;
/* Write to DMA channel selection register */
if (hdma->Instance == DMA1_Channel1)
{
/*Reset request selection for DMA1 Channel1*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C1S;
/* Configure request selection for DMA1 Channel1 */
DMA1_CSELR->CSELR |= hdma->Init.Request;
}
else if (hdma->Instance == DMA1_Channel2)
{
/*Reset request selection for DMA1 Channel2*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C2S;
/* Configure request selection for DMA1 Channel2 */
DMA1_CSELR->CSELR |= (uint32_t)(hdma->Init.Request << 4U);
}
else if (hdma->Instance == DMA1_Channel3)
{
/*Reset request selection for DMA1 Channel3*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C3S;
/* Configure request selection for DMA1 Channel3 */
DMA1_CSELR->CSELR |= (uint32_t) (hdma->Init.Request << 8U);
}
else if (hdma->Instance == DMA1_Channel4)
{
/*Reset request selection for DMA1 Channel4*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C4S;
/* Configure request selection for DMA1 Channel4 */
DMA1_CSELR->CSELR |= (uint32_t) (hdma->Init.Request << 12U);
}
else if (hdma->Instance == DMA1_Channel5)
{
/*Reset request selection for DMA1 Channel5*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C5S;
/* Configure request selection for DMA1 Channel5 */
DMA1_CSELR->CSELR |= (uint32_t) (hdma->Init.Request << 16U);
}
#if !defined (STM32L011xx) && !defined (STM32L021xx)
else if (hdma->Instance == DMA1_Channel6)
{
/*Reset request selection for DMA1 Channel6*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C6S;
/* Configure request selection for DMA1 Channel6 */
DMA1_CSELR->CSELR |= (uint32_t) (hdma->Init.Request << 20U);
}
else if (hdma->Instance == DMA1_Channel7)
{
/*Reset request selection for DMA1 Channel7*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C7S;
/* Configure request selection for DMA1 Channel7 */
DMA1_CSELR->CSELR |= (uint32_t) (hdma->Init.Request << 24U);
}
#endif
/* 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 == NULL)
{
return HAL_ERROR;
}
/* 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 = 0U;
/* Reset DMA Channel Number of Data to Transfer register */
hdma->Instance->CNDTR = 0U;
/* Reset DMA Channel peripheral address register */
hdma->Instance->CPAR = 0U;
/* Reset DMA Channel memory address register */
hdma->Instance->CMAR = 0U;
/* Clear all flags */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_GI_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_HT_FLAG_INDEX(hdma));
/* Reset DMA channel selection register */
if (hdma->Instance == DMA1_Channel1)
{
/*Reset DMA request*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C1S;
}
else if (hdma->Instance == DMA1_Channel2)
{
/*Reset DMA request*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C2S;
}
else if (hdma->Instance == DMA1_Channel3)
{
/*Reset DMA request*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C3S;
}
else if (hdma->Instance == DMA1_Channel4)
{
/*Reset DMA request*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C4S;
}
else if (hdma->Instance == DMA1_Channel5)
{
/*Reset DMA request*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C5S;
}
#if !defined (STM32L011xx) && !defined (STM32L021xx)
else if (hdma->Instance == DMA1_Channel6)
{
/*Reset DMA request*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C6S;
}
else if (hdma->Instance == DMA1_Channel7)
{
/*Reset DMA request*/
DMA1_CSELR->CSELR &= ~DMA_CSELR_C7S;
}
#endif
/* 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;
}
/**
* @}
*/
/** @addtogroup DMA_Exported_Functions_Group2
* @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.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_DMA_Abort(DMA_HandleTypeDef *hdma)
{
uint32_t tickstart = 0U;
/* 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) != 0U)
{
/* 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 Aborts the DMA Transfer in Interrupt mode.
* @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_Abort_IT(DMA_HandleTypeDef *hdma)
{
HAL_StatusTypeDef status = HAL_OK;
if(HAL_DMA_STATE_BUSY != hdma->State)
{
/* no transfer ongoing */
hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER;
status = HAL_ERROR;
}
else
{
/* Disable DMA IT */
__HAL_DMA_DISABLE_IT(hdma, (DMA_IT_TC | DMA_IT_HT | DMA_IT_TE));
/* Disable the channel */
__HAL_DMA_DISABLE(hdma);
/* Clear all flags */
__HAL_DMA_CLEAR_FLAG(hdma, __HAL_DMA_GET_GI_FLAG_INDEX(hdma));
/* Change the DMA state */
hdma->State = HAL_DMA_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
/* Call User Abort callback */
if(hdma->XferAbortCallback != NULL)
{
hdma->XferAbortCallback(hdma);
}
}
return status;
}
/**
* @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 = 0U;
/* 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 == 0U)||((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 */
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) == 0U)
{
/* 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) == 0U)
{
/* 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;
/* Process Unlocked */
__HAL_UNLOCK(hdma);
if(hdma->XferCpltCallback != NULL)
{
/* Transfer complete callback */
hdma->XferCpltCallback(hdma);
}
}
}
}
/**
* @}
*/
/** @addtogroup DMA_Exported_Functions_Group3
* @brief Peripheral State functions
*
@verbatim
===============================================================================
##### Peripheral State 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;
}
/**
* @}
*/
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @addtogroup DMA_Private
* @{
*/
/*
* @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****/