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Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_dma.c')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_dma.c | 773 |
1 files changed, 773 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_dma.c b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_dma.c new file mode 100644 index 0000000000..b1a7aa543c --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_dma.c @@ -0,0 +1,773 @@ +/** + ****************************************************************************** + * @file stm32l0xx_hal_dma.c + * @author MCD Application Team + * @version V1.2.0 + * @date 06-February-2015 + * @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>© 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 "stm32l0xx_hal.h" + +/** @addtogroup STM32L0xx_HAL_Driver + * @{ + */ + +/** @addtogroup DMA DMA + * @brief DMA HAL module driver + * @{ + */ + +#ifdef HAL_DMA_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/** @defgroup DMA_Private_Types DMA Private Types + * + * @{ + */ +#define HAL_TIMEOUT_DMA_ABORT ((uint32_t)1000) /* 1s */ + +/** + * @} + */ + +/* 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); +/** + * @} + */ + +/** @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 = 0; + + /* Check the DMA peripheral state */ + if(hdma == NULL) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_DMA_ALL_PERIPH(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)); + + /* 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 << 4); + } + 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 << 8); + } + 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 << 12); + } + 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 << 16); + } + 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 << 20); + } + 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 << 24); + } + + /* 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 = 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_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; + } + 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; + } + + /* 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. + * @param Timeout: Timeout duration + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMA_Abort(DMA_HandleTypeDef *hdma) +{ + uint32_t tickstart = 0; + + /* 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 */ + 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 = 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 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 */ + 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 */ + 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_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****/ + |