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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c | 960 |
1 files changed, 0 insertions, 960 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c deleted file mode 100644 index d6ebabbf4d..0000000000 --- a/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c +++ /dev/null @@ -1,960 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f4xx_hal_dma.c - * @author MCD Application Team - * @version V1.4.0 - * @date 14-August-2015 - * @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 Stream - (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 Stream, program the required configuration through the following parameters: - Transfer Direction, Source and Destination data formats, - Circular, Normal or peripheral flow control mode, Stream 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. - - -@- The FIFO is used mainly to reduce bus usage and to allow data packing/unpacking: it is - possible to set different Data Sizes for the Peripheral and the Memory (ie. you can set - Half-Word data size for the peripheral to access its data register and set Word data size - for the Memory to gain in access time. Each two half words will be packed and written in - a single access to a Word in the Memory). - - -@- When FIFO is disabled, it is not allowed to configure different Data Sizes for Source - and Destination. In this case the Peripheral Data Size will be applied to both Source - and Destination. - - *** DMA HAL driver macros list *** - ============================================= - [..] - Below the list of most used macros in DMA HAL driver. - - (+) __HAL_DMA_ENABLE: Enable the specified DMA Stream. - (+) __HAL_DMA_DISABLE: Disable the specified DMA Stream. - (+) __HAL_DMA_GET_FS: Return the current DMA Stream FIFO filled level. - (+) __HAL_DMA_GET_FLAG: Get the DMA Stream pending flags. - (+) __HAL_DMA_CLEAR_FLAG: Clear the DMA Stream pending flags. - (+) __HAL_DMA_ENABLE_IT: Enable the specified DMA Stream interrupts. - (+) __HAL_DMA_DISABLE_IT: Disable the specified DMA Stream interrupts. - (+) __HAL_DMA_GET_IT_SOURCE: Check whether the specified DMA Stream 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) 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 "stm32f4xx_hal.h" - -/** @addtogroup STM32F4xx_HAL_Driver - * @{ - */ - -/** @defgroup DMA DMA - * @brief DMA HAL module driver - * @{ - */ - -#ifdef HAL_DMA_MODULE_ENABLED - -/* Private types -------------------------------------------------------------*/ - -typedef struct -{ - __IO uint32_t ISR; /*!< DMA interrupt status register */ - __IO uint32_t Reserved0; - __IO uint32_t IFCR; /*!< DMA interrupt flag clear register */ -} DMA_Base_Registers; - -/* Private variables ---------------------------------------------------------*/ -/* Private constants ---------------------------------------------------------*/ -/** @addtogroup DMA_Private_Constants - * @{ - */ - #define HAL_TIMEOUT_DMA_ABORT ((uint32_t)1000) /* 1s */ -/** - * @} - */ -/* Private macros ------------------------------------------------------------*/ -/* Private functions ---------------------------------------------------------*/ -/** @addtogroup DMA_Private_Functions - * @{ - */ -static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength); -static uint32_t DMA_CalcBaseAndBitshift(DMA_HandleTypeDef *hdma); - -/** - * @} - */ - -/* Exported functions ---------------------------------------------------------*/ -/** @addtogroup DMA_Exported_Functions - * @{ - */ - -/** @addtogroup DMA_Exported_Functions_Group1 - * -@verbatim - =============================================================================== - ##### Initialization and de-initialization functions ##### - =============================================================================== - [..] - This section provides functions allowing to initialize the DMA Stream source - and destination addresses, incrementation and data sizes, transfer direction, - circular/normal mode selection, memory-to-memory mode selection and Stream 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 Stream. - * @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_STREAM_ALL_INSTANCE(hdma->Instance)); - assert_param(IS_DMA_CHANNEL(hdma->Init.Channel)); - 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)); - assert_param(IS_DMA_FIFO_MODE_STATE(hdma->Init.FIFOMode)); - /* Check the memory burst, peripheral burst and FIFO threshold parameters only - when FIFO mode is enabled */ - if(hdma->Init.FIFOMode != DMA_FIFOMODE_DISABLE) - { - assert_param(IS_DMA_FIFO_THRESHOLD(hdma->Init.FIFOThreshold)); - assert_param(IS_DMA_MEMORY_BURST(hdma->Init.MemBurst)); - assert_param(IS_DMA_PERIPHERAL_BURST(hdma->Init.PeriphBurst)); - } - - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_BUSY; - - /* Get the CR register value */ - tmp = hdma->Instance->CR; - - /* Clear CHSEL, MBURST, PBURST, PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR, CT and DBM bits */ - tmp &= ((uint32_t)~(DMA_SxCR_CHSEL | DMA_SxCR_MBURST | DMA_SxCR_PBURST | \ - DMA_SxCR_PL | DMA_SxCR_MSIZE | DMA_SxCR_PSIZE | \ - DMA_SxCR_MINC | DMA_SxCR_PINC | DMA_SxCR_CIRC | \ - DMA_SxCR_DIR | DMA_SxCR_CT | DMA_SxCR_DBM)); - - /* Prepare the DMA Stream configuration */ - tmp |= hdma->Init.Channel | hdma->Init.Direction | - hdma->Init.PeriphInc | hdma->Init.MemInc | - hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment | - hdma->Init.Mode | hdma->Init.Priority; - - /* the Memory burst and peripheral burst are not used when the FIFO is disabled */ - if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE) - { - /* Get memory burst and peripheral burst */ - tmp |= hdma->Init.MemBurst | hdma->Init.PeriphBurst; - } - - /* Write to DMA Stream CR register */ - hdma->Instance->CR = tmp; - - /* Get the FCR register value */ - tmp = hdma->Instance->FCR; - - /* Clear Direct mode and FIFO threshold bits */ - tmp &= (uint32_t)~(DMA_SxFCR_DMDIS | DMA_SxFCR_FTH); - - /* Prepare the DMA Stream FIFO configuration */ - tmp |= hdma->Init.FIFOMode; - - /* the FIFO threshold is not used when the FIFO mode is disabled */ - if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE) - { - /* Get the FIFO threshold */ - tmp |= hdma->Init.FIFOThreshold; - } - - /* Write to DMA Stream FCR */ - hdma->Instance->FCR = tmp; - - /* Initialize StreamBaseAddress and StreamIndex parameters to be used to calculate - DMA steam Base Address needed by HAL_DMA_IRQHandler() and HAL_DMA_PollForTransfer() */ - DMA_CalcBaseAndBitshift(hdma); - - /* Initialize 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 Stream. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_DMA_DeInit(DMA_HandleTypeDef *hdma) -{ - DMA_Base_Registers *regs; - - /* 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 Streamx */ - __HAL_DMA_DISABLE(hdma); - - /* Reset DMA Streamx control register */ - hdma->Instance->CR = 0; - - /* Reset DMA Streamx number of data to transfer register */ - hdma->Instance->NDTR = 0; - - /* Reset DMA Streamx peripheral address register */ - hdma->Instance->PAR = 0; - - /* Reset DMA Streamx memory 0 address register */ - hdma->Instance->M0AR = 0; - - /* Reset DMA Streamx memory 1 address register */ - hdma->Instance->M1AR = 0; - - /* Reset DMA Streamx FIFO control register */ - hdma->Instance->FCR = (uint32_t)0x00000021; - - /* Get DMA steam Base Address */ - regs = (DMA_Base_Registers *)DMA_CalcBaseAndBitshift(hdma); - - /* Clear all interrupt flags at correct offset within the register */ - regs->IFCR = 0x3F << hdma->StreamIndex; - - /* 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; -} - -/** - * @} - */ - -/** @addtogroup DMA_Exported_Functions_Group2 - * -@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 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 - */ -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 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 - */ -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 all interrupts */ - hdma->Instance->CR |= DMA_IT_TC | DMA_IT_HT | DMA_IT_TE | DMA_IT_DME; - hdma->Instance->FCR |= DMA_IT_FE; - - /* 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 Stream. - * - * @note After disabling a DMA Stream, a check for wait until the DMA Stream is - * effectively disabled is added. If a Stream is disabled - * while a data transfer is ongoing, the current data will be transferred - * and the Stream 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 = 0; - - /* Disable the stream */ - __HAL_DMA_DISABLE(hdma); - - /* Get tick */ - tickstart = HAL_GetTick(); - - /* Check if the DMA Stream is effectively disabled */ - while((hdma->Instance->CR & DMA_SxCR_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 Stream. - * @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, tmp, tmp1, tmp2; - uint32_t tickstart = 0; - - /* calculate DMA base and stream number */ - DMA_Base_Registers *regs; - - regs = (DMA_Base_Registers *)hdma->StreamBaseAddress; - - /* Get the level transfer complete flag */ - if(CompleteLevel == HAL_DMA_FULL_TRANSFER) - { - /* Transfer Complete flag */ - temp = DMA_FLAG_TCIF0_4 << hdma->StreamIndex; - } - else - { - /* Half Transfer Complete flag */ - temp = DMA_FLAG_HTIF0_4 << hdma->StreamIndex; - } - - /* Get tick */ - tickstart = HAL_GetTick(); - - while((regs->ISR & temp) == RESET) - { - tmp = regs->ISR & (DMA_FLAG_TEIF0_4 << hdma->StreamIndex); - tmp1 = regs->ISR & (DMA_FLAG_FEIF0_4 << hdma->StreamIndex); - tmp2 = regs->ISR & (DMA_FLAG_DMEIF0_4 << hdma->StreamIndex); - if((tmp != RESET) || (tmp1 != RESET) || (tmp2 != RESET)) - { - if(tmp != RESET) - { - /* Update error code */ - hdma->ErrorCode |= HAL_DMA_ERROR_TE; - - /* Clear the transfer error flag */ - regs->IFCR = DMA_FLAG_TEIF0_4 << hdma->StreamIndex; - } - if(tmp1 != RESET) - { - /* Update error code */ - hdma->ErrorCode |= HAL_DMA_ERROR_FE; - - /* Clear the FIFO error flag */ - regs->IFCR = DMA_FLAG_FEIF0_4 << hdma->StreamIndex; - } - if(tmp2 != RESET) - { - /* Update error code */ - hdma->ErrorCode |= HAL_DMA_ERROR_DME; - - /* Clear the Direct Mode error flag */ - regs->IFCR = DMA_FLAG_DMEIF0_4 << hdma->StreamIndex; - } - /* 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 */ - 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 half transfer and transfer complete flags */ - regs->IFCR = (DMA_FLAG_HTIF0_4 | DMA_FLAG_TCIF0_4) << hdma->StreamIndex; - - /* Multi_Buffering mode enabled */ - if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0) - { - /* Current memory buffer used is Memory 0 */ - if((hdma->Instance->CR & DMA_SxCR_CT) == 0) - { - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_READY_MEM0; - } - /* Current memory buffer used is Memory 1 */ - else if((hdma->Instance->CR & DMA_SxCR_CT) != 0) - { - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_READY_MEM1; - } - } - else - { - /* The selected Streamx EN bit is cleared (DMA is disabled and all transfers - are complete) */ - hdma->State = HAL_DMA_STATE_READY_MEM0; - } - /* Process Unlocked */ - __HAL_UNLOCK(hdma); - } - else - { - /* Clear the half transfer complete flag */ - regs->IFCR = DMA_FLAG_HTIF0_4 << hdma->StreamIndex; - - /* Multi_Buffering mode enabled */ - if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0) - { - /* Current memory buffer used is Memory 0 */ - if((hdma->Instance->CR & DMA_SxCR_CT) == 0) - { - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_READY_HALF_MEM0; - } - /* Current memory buffer used is Memory 1 */ - else if((hdma->Instance->CR & DMA_SxCR_CT) != 0) - { - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_READY_HALF_MEM1; - } - } - else - { - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_READY_HALF_MEM0; - } - } - 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 Stream. - * @retval None - */ -void HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma) -{ - /* calculate DMA base and stream number */ - DMA_Base_Registers *regs; - - regs = (DMA_Base_Registers *)hdma->StreamBaseAddress; - - /* Transfer Error Interrupt management ***************************************/ - if ((regs->ISR & (DMA_FLAG_TEIF0_4 << hdma->StreamIndex)) != 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 */ - regs->IFCR = DMA_FLAG_TEIF0_4 << hdma->StreamIndex; - - /* 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); - } - } - } - /* FIFO Error Interrupt management ******************************************/ - if ((regs->ISR & (DMA_FLAG_FEIF0_4 << hdma->StreamIndex)) != RESET) - { - if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_FE) != RESET) - { - /* Disable the FIFO Error interrupt */ - __HAL_DMA_DISABLE_IT(hdma, DMA_IT_FE); - - /* Clear the FIFO error flag */ - regs->IFCR = DMA_FLAG_FEIF0_4 << hdma->StreamIndex; - - /* Update error code */ - hdma->ErrorCode |= HAL_DMA_ERROR_FE; - - /* 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); - } - } - } - /* Direct Mode Error Interrupt management ***********************************/ - if ((regs->ISR & (DMA_FLAG_DMEIF0_4 << hdma->StreamIndex)) != RESET) - { - if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_DME) != RESET) - { - /* Disable the direct mode Error interrupt */ - __HAL_DMA_DISABLE_IT(hdma, DMA_IT_DME); - - /* Clear the direct mode error flag */ - regs->IFCR = DMA_FLAG_DMEIF0_4 << hdma->StreamIndex; - - /* Update error code */ - hdma->ErrorCode |= HAL_DMA_ERROR_DME; - - /* 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 ((regs->ISR & (DMA_FLAG_HTIF0_4 << hdma->StreamIndex)) != RESET) - { - if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_HT) != RESET) - { - /* Multi_Buffering mode enabled */ - if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0) - { - /* Clear the half transfer complete flag */ - regs->IFCR = DMA_FLAG_HTIF0_4 << hdma->StreamIndex; - - /* Current memory buffer used is Memory 0 */ - if((hdma->Instance->CR & DMA_SxCR_CT) == 0) - { - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_READY_HALF_MEM0; - } - /* Current memory buffer used is Memory 1 */ - else if((hdma->Instance->CR & DMA_SxCR_CT) != 0) - { - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_READY_HALF_MEM1; - } - } - else - { - /* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */ - if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) - { - /* Disable the half transfer interrupt */ - __HAL_DMA_DISABLE_IT(hdma, DMA_IT_HT); - } - /* Clear the half transfer complete flag */ - regs->IFCR = DMA_FLAG_HTIF0_4 << hdma->StreamIndex; - - /* Change DMA peripheral state */ - hdma->State = HAL_DMA_STATE_READY_HALF_MEM0; - } - - if(hdma->XferHalfCpltCallback != NULL) - { - /* Half transfer callback */ - hdma->XferHalfCpltCallback(hdma); - } - } - } - /* Transfer Complete Interrupt management ***********************************/ - if ((regs->ISR & (DMA_FLAG_TCIF0_4 << hdma->StreamIndex)) != RESET) - { - if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TC) != RESET) - { - if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0) - { - /* Clear the transfer complete flag */ - regs->IFCR = DMA_FLAG_TCIF0_4 << hdma->StreamIndex; - - /* Current memory buffer used is Memory 1 */ - if((hdma->Instance->CR & DMA_SxCR_CT) == 0) - { - if(hdma->XferM1CpltCallback != NULL) - { - /* Transfer complete Callback for memory1 */ - hdma->XferM1CpltCallback(hdma); - } - } - /* Current memory buffer used is Memory 0 */ - else if((hdma->Instance->CR & DMA_SxCR_CT) != 0) - { - if(hdma->XferCpltCallback != NULL) - { - /* Transfer complete Callback for memory0 */ - hdma->XferCpltCallback(hdma); - } - } - } - /* Disable the transfer complete interrupt if the DMA mode is not CIRCULAR */ - else - { - if((hdma->Instance->CR & DMA_SxCR_CIRC) == 0) - { - /* Disable the transfer complete interrupt */ - __HAL_DMA_DISABLE_IT(hdma, DMA_IT_TC); - } - /* Clear the transfer complete flag */ - regs->IFCR = DMA_FLAG_TCIF0_4 << hdma->StreamIndex; - - /* Update error code */ - hdma->ErrorCode |= HAL_DMA_ERROR_NONE; - - /* Change the DMA state */ - hdma->State = HAL_DMA_STATE_READY_MEM0; - - /* Process Unlocked */ - __HAL_UNLOCK(hdma); - - if(hdma->XferCpltCallback != NULL) - { - /* Transfer complete callback */ - hdma->XferCpltCallback(hdma); - } - } - } - } -} - -/** - * @} - */ - -/** @addtogroup DMA_Exported_Functions_Group3 - * -@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 Stream. - * @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 Stream. - * @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 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_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength) -{ - /* Clear DBM bit */ - hdma->Instance->CR &= (uint32_t)(~DMA_SxCR_DBM); - - /* 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; - } -} - -/** - * @brief Returns the DMA Stream base address depending on stream number - * @param hdma: pointer to a DMA_HandleTypeDef structure that contains - * the configuration information for the specified DMA Stream. - * @retval Stream base address - */ -static uint32_t DMA_CalcBaseAndBitshift(DMA_HandleTypeDef *hdma) -{ - uint32_t stream_number = (((uint32_t)hdma->Instance & 0xFF) - 16) / 24; - - /* lookup table for necessary bitshift of flags within status registers */ - static const uint8_t flagBitshiftOffset[8] = {0, 6, 16, 22, 0, 6, 16, 22}; - hdma->StreamIndex = flagBitshiftOffset[stream_number]; - - if (stream_number > 3) - { - /* return pointer to HISR and HIFCR */ - hdma->StreamBaseAddress = (((uint32_t)hdma->Instance & (uint32_t)(~0x3FF)) + 4); - } - else - { - /* return pointer to LISR and LIFCR */ - hdma->StreamBaseAddress = ((uint32_t)hdma->Instance & (uint32_t)(~0x3FF)); - } - - return hdma->StreamBaseAddress; -} -/** - * @} - */ - -#endif /* HAL_DMA_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |