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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, 960 insertions, 0 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 new file mode 100644 index 0000000000..d6ebabbf4d --- /dev/null +++ b/c/src/lib/libbsp/arm/stm32f4x/hal/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c @@ -0,0 +1,960 @@ +/** + ****************************************************************************** + * @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****/ |