| /** |
| ****************************************************************************** |
| * @file stm32h7xx_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 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_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) 2017 STMicroelectronics. |
| * All rights reserved.</center></h2> |
| * |
| * This software component is licensed by ST under BSD 3-Clause license, |
| * the "License"; You may not use this file except in compliance with the |
| * License. You may obtain a copy of the License at: |
| * opensource.org/licenses/BSD-3-Clause |
| * |
| ****************************************************************************** |
| */ |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32h7xx_hal.h" |
| |
| /** @addtogroup STM32H7xx_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; |
| |
| typedef struct |
| { |
| __IO uint32_t ISR; /*!< BDMA interrupt status register */ |
| __IO uint32_t IFCR; /*!< BDMA interrupt flag clear register */ |
| } BDMA_Base_Registers; |
| |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private constants ---------------------------------------------------------*/ |
| /** @addtogroup DMA_Private_Constants |
| * @{ |
| */ |
| #define HAL_TIMEOUT_DMA_ABORT (5U) /* 5 ms */ |
| |
| #define BDMA_PERIPH_TO_MEMORY (0x00000000U) /*!< Peripheral to memory direction */ |
| #define BDMA_MEMORY_TO_PERIPH ((uint32_t)BDMA_CCR_DIR) /*!< Memory to peripheral direction */ |
| #define BDMA_MEMORY_TO_MEMORY ((uint32_t)BDMA_CCR_MEM2MEM) /*!< Memory to memory direction */ |
| |
| /* DMA to BDMA conversion */ |
| #define DMA_TO_BDMA_DIRECTION(__DMA_DIRECTION__) (((__DMA_DIRECTION__) == DMA_MEMORY_TO_PERIPH)? BDMA_MEMORY_TO_PERIPH: \ |
| ((__DMA_DIRECTION__) == DMA_MEMORY_TO_MEMORY)? BDMA_MEMORY_TO_MEMORY: \ |
| BDMA_PERIPH_TO_MEMORY) |
| |
| #define DMA_TO_BDMA_PERIPHERAL_INC(__DMA_PERIPHERAL_INC__) ((__DMA_PERIPHERAL_INC__) >> 3U) |
| #define DMA_TO_BDMA_MEMORY_INC(__DMA_MEMORY_INC__) ((__DMA_MEMORY_INC__) >> 3U) |
| |
| #define DMA_TO_BDMA_PDATA_SIZE(__DMA_PDATA_SIZE__) ((__DMA_PDATA_SIZE__) >> 3U) |
| #define DMA_TO_BDMA_MDATA_SIZE(__DMA_MDATA_SIZE__) ((__DMA_MDATA_SIZE__) >> 3U) |
| |
| #define DMA_TO_BDMA_MODE(__DMA_MODE__) ((__DMA_MODE__) >> 3U) |
| |
| #define DMA_TO_BDMA_PRIORITY(__DMA_PRIORITY__) ((__DMA_PRIORITY__) >> 4U) |
| |
| /** |
| * @} |
| */ |
| /* 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); |
| static HAL_StatusTypeDef DMA_CheckFifoParam(DMA_HandleTypeDef *hdma); |
| static void DMA_CalcDMAMUXChannelBaseAndMask(DMA_HandleTypeDef *hdma); |
| static void DMA_CalcDMAMUXRequestGenBaseAndMask(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 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. |
| The HAL_DMA_DeInit function allows to deinitialize the DMA stream. |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Initialize 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 registerValue; |
| uint32_t tickstart = HAL_GetTick(); |
| DMA_Base_Registers *regs_dma; |
| BDMA_Base_Registers *regs_bdma; |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Check the parameters */ |
| assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance)); |
| assert_param(IS_DMA_DIRECTION(hdma->Init.Direction)); |
| assert_param(IS_DMA_PERIPHERAL_INC_STATE(hdma->Init.PeriphInc)); |
| assert_param(IS_DMA_MEMORY_INC_STATE(hdma->Init.MemInc)); |
| assert_param(IS_DMA_PERIPHERAL_DATA_SIZE(hdma->Init.PeriphDataAlignment)); |
| assert_param(IS_DMA_MEMORY_DATA_SIZE(hdma->Init.MemDataAlignment)); |
| assert_param(IS_DMA_MODE(hdma->Init.Mode)); |
| assert_param(IS_DMA_PRIORITY(hdma->Init.Priority)); |
| |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| assert_param(IS_DMA_REQUEST(hdma->Init.Request)); |
| 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)); |
| } |
| |
| /* Allocate lock resource */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Change DMA peripheral state */ |
| hdma->State = HAL_DMA_STATE_BUSY; |
| |
| /* Disable the peripheral */ |
| __HAL_DMA_DISABLE(hdma); |
| |
| /* Check if the DMA Stream is effectively disabled */ |
| while((((DMA_Stream_TypeDef *)hdma->Instance)->CR & DMA_SxCR_EN) != 0U) |
| { |
| /* Check for the Timeout */ |
| if((HAL_GetTick() - tickstart ) > HAL_TIMEOUT_DMA_ABORT) |
| { |
| /* Update error code */ |
| hdma->ErrorCode = HAL_DMA_ERROR_TIMEOUT; |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_ERROR; |
| |
| return HAL_ERROR; |
| } |
| } |
| |
| /* Get the CR register value */ |
| registerValue = ((DMA_Stream_TypeDef *)hdma->Instance)->CR; |
| |
| /* Clear CHSEL, MBURST, PBURST, PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR, CT and DBM bits */ |
| registerValue &= ((uint32_t)~(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 */ |
| registerValue |= 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 */ |
| registerValue |= hdma->Init.MemBurst | hdma->Init.PeriphBurst; |
| } |
| |
| /* Write to DMA Stream CR register */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR = registerValue; |
| |
| /* Get the FCR register value */ |
| registerValue = ((DMA_Stream_TypeDef *)hdma->Instance)->FCR; |
| |
| /* Clear Direct mode and FIFO threshold bits */ |
| registerValue &= (uint32_t)~(DMA_SxFCR_DMDIS | DMA_SxFCR_FTH); |
| |
| /* Prepare the DMA Stream FIFO configuration */ |
| registerValue |= 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 */ |
| registerValue |= hdma->Init.FIFOThreshold; |
| |
| /* Check compatibility between FIFO threshold level and size of the memory burst */ |
| /* for INCR4, INCR8, INCR16 */ |
| if(hdma->Init.MemBurst != DMA_MBURST_SINGLE) |
| { |
| if (DMA_CheckFifoParam(hdma) != HAL_OK) |
| { |
| /* Update error code */ |
| hdma->ErrorCode = HAL_DMA_ERROR_PARAM; |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_READY; |
| |
| return HAL_ERROR; |
| } |
| } |
| } |
| |
| /* Write to DMA Stream FCR */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->FCR = registerValue; |
| |
| /* Initialize StreamBaseAddress and StreamIndex parameters to be used to calculate |
| DMA steam Base Address needed by HAL_DMA_IRQHandler() and HAL_DMA_PollForTransfer() */ |
| regs_dma = (DMA_Base_Registers *)DMA_CalcBaseAndBitshift(hdma); |
| |
| /* Clear all interrupt flags */ |
| regs_dma->IFCR = 0x3FUL << (hdma->StreamIndex & 0x1FU); |
| } |
| else if(IS_BDMA_CHANNEL_INSTANCE(hdma->Instance) != 0U) /* BDMA instance(s) */ |
| { |
| if(IS_BDMA_CHANNEL_DMAMUX_INSTANCE(hdma->Instance) != 0U) |
| { |
| /* Check the request parameter */ |
| assert_param(IS_BDMA_REQUEST(hdma->Init.Request)); |
| } |
| |
| /* Allocate lock resource */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Change DMA peripheral state */ |
| hdma->State = HAL_DMA_STATE_BUSY; |
| |
| /* Get the CR register value */ |
| registerValue = ((BDMA_Channel_TypeDef *)hdma->Instance)->CCR; |
| |
| /* Clear PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR, MEM2MEM, DBM and CT bits */ |
| registerValue &= ((uint32_t)~(BDMA_CCR_PL | BDMA_CCR_MSIZE | BDMA_CCR_PSIZE | \ |
| BDMA_CCR_MINC | BDMA_CCR_PINC | BDMA_CCR_CIRC | \ |
| BDMA_CCR_DIR | BDMA_CCR_MEM2MEM | BDMA_CCR_DBM | \ |
| BDMA_CCR_CT)); |
| |
| /* Prepare the DMA Channel configuration */ |
| registerValue |= DMA_TO_BDMA_DIRECTION(hdma->Init.Direction) | |
| DMA_TO_BDMA_PERIPHERAL_INC(hdma->Init.PeriphInc) | |
| DMA_TO_BDMA_MEMORY_INC(hdma->Init.MemInc) | |
| DMA_TO_BDMA_PDATA_SIZE(hdma->Init.PeriphDataAlignment) | |
| DMA_TO_BDMA_MDATA_SIZE(hdma->Init.MemDataAlignment) | |
| DMA_TO_BDMA_MODE(hdma->Init.Mode) | |
| DMA_TO_BDMA_PRIORITY(hdma->Init.Priority); |
| |
| /* Write to DMA Channel CR register */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CCR = registerValue; |
| |
| /* calculation of the channel index */ |
| hdma->StreamIndex = (((uint32_t)((uint32_t*)hdma->Instance) - (uint32_t)BDMA_Channel0) / ((uint32_t)BDMA_Channel1 - (uint32_t)BDMA_Channel0)) << 2U; |
| |
| /* Initialize StreamBaseAddress and StreamIndex parameters to be used to calculate |
| DMA steam Base Address needed by HAL_DMA_IRQHandler() and HAL_DMA_PollForTransfer() */ |
| regs_bdma = (BDMA_Base_Registers *)DMA_CalcBaseAndBitshift(hdma); |
| |
| /* Clear all interrupt flags */ |
| regs_bdma->IFCR = ((BDMA_IFCR_CGIF0) << (hdma->StreamIndex & 0x1FU)); |
| } |
| else |
| { |
| hdma->ErrorCode = HAL_DMA_ERROR_PARAM; |
| hdma->State = HAL_DMA_STATE_ERROR; |
| |
| return HAL_ERROR; |
| } |
| |
| if(IS_DMA_DMAMUX_ALL_INSTANCE(hdma->Instance) != 0U) /* No DMAMUX available for BDMA1 */ |
| { |
| /* Initialize parameters for DMAMUX channel : |
| DMAmuxChannel, DMAmuxChannelStatus and DMAmuxChannelStatusMask |
| */ |
| DMA_CalcDMAMUXChannelBaseAndMask(hdma); |
| |
| if(hdma->Init.Direction == DMA_MEMORY_TO_MEMORY) |
| { |
| /* if memory to memory force the request to 0*/ |
| hdma->Init.Request = DMA_REQUEST_MEM2MEM; |
| } |
| |
| /* Set peripheral request to DMAMUX channel */ |
| hdma->DMAmuxChannel->CCR = (hdma->Init.Request & DMAMUX_CxCR_DMAREQ_ID); |
| |
| /* Clear the DMAMUX synchro overrun flag */ |
| hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask; |
| |
| /* Initialize parameters for DMAMUX request generator : |
| if the DMA request is DMA_REQUEST_GENERATOR0 to DMA_REQUEST_GENERATOR7 |
| */ |
| if((hdma->Init.Request >= DMA_REQUEST_GENERATOR0) && (hdma->Init.Request <= DMA_REQUEST_GENERATOR7)) |
| { |
| /* Initialize parameters for DMAMUX request generator : |
| DMAmuxRequestGen, DMAmuxRequestGenStatus and DMAmuxRequestGenStatusMask */ |
| DMA_CalcDMAMUXRequestGenBaseAndMask(hdma); |
| |
| /* Reset the DMAMUX request generator register */ |
| hdma->DMAmuxRequestGen->RGCR = 0U; |
| |
| /* Clear the DMAMUX request generator overrun flag */ |
| hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask; |
| } |
| else |
| { |
| hdma->DMAmuxRequestGen = 0U; |
| hdma->DMAmuxRequestGenStatus = 0U; |
| hdma->DMAmuxRequestGenStatusMask = 0U; |
| } |
| } |
| |
| /* 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_dma; |
| BDMA_Base_Registers *regs_bdma; |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Disable the selected DMA Streamx */ |
| __HAL_DMA_DISABLE(hdma); |
| |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| /* Reset DMA Streamx control register */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR = 0U; |
| |
| /* Reset DMA Streamx number of data to transfer register */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->NDTR = 0U; |
| |
| /* Reset DMA Streamx peripheral address register */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->PAR = 0U; |
| |
| /* Reset DMA Streamx memory 0 address register */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->M0AR = 0U; |
| |
| /* Reset DMA Streamx memory 1 address register */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->M1AR = 0U; |
| |
| /* Reset DMA Streamx FIFO control register */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->FCR = (uint32_t)0x00000021U; |
| |
| /* Get DMA steam Base Address */ |
| regs_dma = (DMA_Base_Registers *)DMA_CalcBaseAndBitshift(hdma); |
| |
| /* Clear all interrupt flags at correct offset within the register */ |
| regs_dma->IFCR = 0x3FUL << (hdma->StreamIndex & 0x1FU); |
| } |
| else if(IS_BDMA_CHANNEL_INSTANCE(hdma->Instance) != 0U) /* BDMA instance(s) */ |
| { |
| /* Reset DMA Channel control register */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CCR = 0U; |
| |
| /* Reset DMA Channel Number of Data to Transfer register */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CNDTR = 0U; |
| |
| /* Reset DMA Channel peripheral address register */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CPAR = 0U; |
| |
| /* Reset DMA Channel memory 0 address register */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CM0AR = 0U; |
| |
| /* Reset DMA Channel memory 1 address register */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CM1AR = 0U; |
| |
| /* Get DMA steam Base Address */ |
| regs_bdma = (BDMA_Base_Registers *)DMA_CalcBaseAndBitshift(hdma); |
| |
| /* Clear all interrupt flags at correct offset within the register */ |
| regs_bdma->IFCR = ((BDMA_IFCR_CGIF0) << (hdma->StreamIndex & 0x1FU)); |
| } |
| else |
| { |
| /* Return error status */ |
| return HAL_ERROR; |
| } |
| |
| if(IS_DMA_DMAMUX_ALL_INSTANCE(hdma->Instance) != 0U) /* No DMAMUX available for BDMA1 */ |
| { |
| /* Initialize parameters for DMAMUX channel : |
| DMAmuxChannel, DMAmuxChannelStatus and DMAmuxChannelStatusMask */ |
| DMA_CalcDMAMUXChannelBaseAndMask(hdma); |
| |
| if(hdma->DMAmuxChannel != 0U) |
| { |
| /* Resett he DMAMUX channel that corresponds to the DMA stream */ |
| hdma->DMAmuxChannel->CCR = 0U; |
| |
| /* Clear the DMAMUX synchro overrun flag */ |
| hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask; |
| } |
| |
| if((hdma->Init.Request >= DMA_REQUEST_GENERATOR0) && (hdma->Init.Request <= DMA_REQUEST_GENERATOR7)) |
| { |
| /* Initialize parameters for DMAMUX request generator : |
| DMAmuxRequestGen, DMAmuxRequestGenStatus and DMAmuxRequestGenStatusMask */ |
| DMA_CalcDMAMUXRequestGenBaseAndMask(hdma); |
| |
| /* Reset the DMAMUX request generator register */ |
| hdma->DMAmuxRequestGen->RGCR = 0U; |
| |
| /* Clear the DMAMUX request generator overrun flag */ |
| hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask; |
| } |
| |
| hdma->DMAmuxRequestGen = 0U; |
| hdma->DMAmuxRequestGenStatus = 0U; |
| hdma->DMAmuxRequestGenStatusMask = 0U; |
| } |
| |
| |
| /* Clean callbacks */ |
| hdma->XferCpltCallback = NULL; |
| hdma->XferHalfCpltCallback = NULL; |
| hdma->XferM1CpltCallback = NULL; |
| hdma->XferM1HalfCpltCallback = NULL; |
| hdma->XferErrorCallback = NULL; |
| hdma->XferAbortCallback = NULL; |
| |
| /* 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 |
| (+) Register and Unregister DMA callbacks |
| (+) 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) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Check the parameters */ |
| assert_param(IS_DMA_BUFFER_SIZE(DataLength)); |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process locked */ |
| __HAL_LOCK(hdma); |
| |
| if(HAL_DMA_STATE_READY == hdma->State) |
| { |
| /* Change DMA peripheral state */ |
| hdma->State = HAL_DMA_STATE_BUSY; |
| |
| /* Initialize the error code */ |
| hdma->ErrorCode = HAL_DMA_ERROR_NONE; |
| |
| /* 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); |
| } |
| else |
| { |
| /* Process unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Set the error code to busy */ |
| hdma->ErrorCode = HAL_DMA_ERROR_BUSY; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| return status; |
| } |
| |
| /** |
| * @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) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Check the parameters */ |
| assert_param(IS_DMA_BUFFER_SIZE(DataLength)); |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process locked */ |
| __HAL_LOCK(hdma); |
| |
| if(HAL_DMA_STATE_READY == hdma->State) |
| { |
| /* Change DMA peripheral state */ |
| hdma->State = HAL_DMA_STATE_BUSY; |
| |
| /* Initialize the error code */ |
| hdma->ErrorCode = HAL_DMA_ERROR_NONE; |
| |
| /* Disable the peripheral */ |
| __HAL_DMA_DISABLE(hdma); |
| |
| /* Configure the source, destination address and the data length */ |
| DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength); |
| |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| /* Enable Common interrupts*/ |
| MODIFY_REG(((DMA_Stream_TypeDef *)hdma->Instance)->CR, (DMA_IT_TC | DMA_IT_TE | DMA_IT_DME | DMA_IT_HT), (DMA_IT_TC | DMA_IT_TE | DMA_IT_DME)); |
| |
| if(hdma->XferHalfCpltCallback != NULL) |
| { |
| /* Enable Half Transfer IT if corresponding Callback is set */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR |= DMA_IT_HT; |
| } |
| } |
| else /* BDMA channel */ |
| { |
| /* Enable Common interrupts */ |
| MODIFY_REG(((BDMA_Channel_TypeDef *)hdma->Instance)->CCR, (BDMA_CCR_TCIE | BDMA_CCR_HTIE | BDMA_CCR_TEIE), (BDMA_CCR_TCIE | BDMA_CCR_TEIE)); |
| |
| if(hdma->XferHalfCpltCallback != NULL) |
| { |
| /*Enable Half Transfer IT if corresponding Callback is set */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CCR |= BDMA_CCR_HTIE; |
| } |
| } |
| |
| if(IS_DMA_DMAMUX_ALL_INSTANCE(hdma->Instance) != 0U) /* No DMAMUX available for BDMA1 */ |
| { |
| /* Check if DMAMUX Synchronization is enabled */ |
| if((hdma->DMAmuxChannel->CCR & DMAMUX_CxCR_SE) != 0U) |
| { |
| /* Enable DMAMUX sync overrun IT*/ |
| hdma->DMAmuxChannel->CCR |= DMAMUX_CxCR_SOIE; |
| } |
| |
| if(hdma->DMAmuxRequestGen != 0U) |
| { |
| /* if using DMAMUX request generator, enable the DMAMUX request generator overrun IT*/ |
| /* enable the request gen overrun IT */ |
| hdma->DMAmuxRequestGen->RGCR |= DMAMUX_RGxCR_OIE; |
| } |
| } |
| |
| /* Enable the Peripheral */ |
| __HAL_DMA_ENABLE(hdma); |
| } |
| else |
| { |
| /* Process unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Set the error code to busy */ |
| hdma->ErrorCode = HAL_DMA_ERROR_BUSY; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| return status; |
| } |
| |
| /** |
| * @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) |
| { |
| /* calculate DMA base and stream number */ |
| DMA_Base_Registers *regs_dma; |
| BDMA_Base_Registers *regs_bdma; |
| const __IO uint32_t *enableRegister; |
| |
| uint32_t tickstart = HAL_GetTick(); |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Check the DMA peripheral state */ |
| if(hdma->State != HAL_DMA_STATE_BUSY) |
| { |
| hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| return HAL_ERROR; |
| } |
| else |
| { |
| /* Disable all the transfer interrupts */ |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| /* Disable DMA All Interrupts */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR &= ~(DMA_IT_TC | DMA_IT_TE | DMA_IT_DME | DMA_IT_HT); |
| ((DMA_Stream_TypeDef *)hdma->Instance)->FCR &= ~(DMA_IT_FE); |
| |
| enableRegister = (__IO uint32_t *)(&(((DMA_Stream_TypeDef *)hdma->Instance)->CR)); |
| } |
| else /* BDMA channel */ |
| { |
| /* Disable DMA All Interrupts */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CCR &= ~(BDMA_CCR_TCIE | BDMA_CCR_HTIE | BDMA_CCR_TEIE); |
| |
| enableRegister = (__IO uint32_t *)(&(((BDMA_Channel_TypeDef *)hdma->Instance)->CCR)); |
| } |
| |
| if(IS_DMA_DMAMUX_ALL_INSTANCE(hdma->Instance) != 0U) /* No DMAMUX available for BDMA1 */ |
| { |
| /* disable the DMAMUX sync overrun IT */ |
| hdma->DMAmuxChannel->CCR &= ~DMAMUX_CxCR_SOIE; |
| } |
| |
| /* Disable the stream */ |
| __HAL_DMA_DISABLE(hdma); |
| |
| /* Check if the DMA Stream is effectively disabled */ |
| while(((*enableRegister) & DMA_SxCR_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_ERROR; |
| |
| return HAL_ERROR; |
| } |
| } |
| |
| /* Clear all interrupt flags at correct offset within the register */ |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| regs_dma = (DMA_Base_Registers *)hdma->StreamBaseAddress; |
| regs_dma->IFCR = 0x3FUL << (hdma->StreamIndex & 0x1FU); |
| } |
| else /* BDMA channel */ |
| { |
| regs_bdma = (BDMA_Base_Registers *)hdma->StreamBaseAddress; |
| regs_bdma->IFCR = ((BDMA_IFCR_CGIF0) << (hdma->StreamIndex & 0x1FU)); |
| } |
| |
| if(IS_DMA_DMAMUX_ALL_INSTANCE(hdma->Instance) != 0U) /* No DMAMUX available for BDMA1 */ |
| { |
| /* Clear the DMAMUX synchro overrun flag */ |
| hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask; |
| |
| if(hdma->DMAmuxRequestGen != 0U) |
| { |
| /* if using DMAMUX request generator, disable the DMAMUX request generator overrun IT */ |
| /* disable the request gen overrun IT */ |
| hdma->DMAmuxRequestGen->RGCR &= ~DMAMUX_RGxCR_OIE; |
| |
| /* Clear the DMAMUX request generator overrun flag */ |
| hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask; |
| } |
| } |
| |
| /* 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) |
| { |
| BDMA_Base_Registers *regs_bdma; |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| if(hdma->State != HAL_DMA_STATE_BUSY) |
| { |
| hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER; |
| return HAL_ERROR; |
| } |
| else |
| { |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| /* Set Abort State */ |
| hdma->State = HAL_DMA_STATE_ABORT; |
| |
| /* Disable the stream */ |
| __HAL_DMA_DISABLE(hdma); |
| } |
| else /* BDMA channel */ |
| { |
| /* Disable DMA All Interrupts */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CCR &= ~(BDMA_CCR_TCIE | BDMA_CCR_HTIE | BDMA_CCR_TEIE); |
| |
| /* Disable the channel */ |
| __HAL_DMA_DISABLE(hdma); |
| |
| if(IS_DMA_DMAMUX_ALL_INSTANCE(hdma->Instance) != 0U) /* No DMAMUX available for BDMA1 */ |
| { |
| /* disable the DMAMUX sync overrun IT */ |
| hdma->DMAmuxChannel->CCR &= ~DMAMUX_CxCR_SOIE; |
| |
| /* Clear all flags */ |
| regs_bdma = (BDMA_Base_Registers *)hdma->StreamBaseAddress; |
| regs_bdma->IFCR = ((BDMA_IFCR_CGIF0) << (hdma->StreamIndex & 0x1FU)); |
| |
| /* Clear the DMAMUX synchro overrun flag */ |
| hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask; |
| |
| if(hdma->DMAmuxRequestGen != 0U) |
| { |
| /* if using DMAMUX request generator, disable the DMAMUX request generator overrun IT*/ |
| /* disable the request gen overrun IT */ |
| hdma->DMAmuxRequestGen->RGCR &= ~DMAMUX_RGxCR_OIE; |
| |
| /* Clear the DMAMUX request generator overrun flag */ |
| hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask; |
| } |
| } |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_READY; |
| |
| /* Call User Abort callback */ |
| if(hdma->XferAbortCallback != NULL) |
| { |
| hdma->XferAbortCallback(hdma); |
| } |
| } |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Polling for transfer complete. |
| * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA Stream. |
| * @param CompleteLevel: Specifies the DMA level complete. |
| * @note The polling mode is kept in this version for legacy. it is recommanded to use the IT model instead. |
| * This model could be used for debug purpose. |
| * @note The HAL_DMA_PollForTransfer API cannot be used in circular and double buffering mode (automatic circular mode). |
| * @param Timeout: Timeout duration. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_DMA_PollForTransfer(DMA_HandleTypeDef *hdma, HAL_DMA_LevelCompleteTypeDef CompleteLevel, uint32_t Timeout) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| uint32_t cpltlevel_mask; |
| uint32_t tickstart = HAL_GetTick(); |
| |
| /* IT status register */ |
| __IO uint32_t *isr_reg; |
| /* IT clear flag register */ |
| __IO uint32_t *ifcr_reg; |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| if(HAL_DMA_STATE_BUSY != hdma->State) |
| { |
| /* No transfer ongoing */ |
| hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER; |
| __HAL_UNLOCK(hdma); |
| |
| return HAL_ERROR; |
| } |
| |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| /* Polling mode not supported in circular mode and double buffering mode */ |
| if ((((DMA_Stream_TypeDef *)hdma->Instance)->CR & DMA_SxCR_CIRC) != 0U) |
| { |
| hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED; |
| return HAL_ERROR; |
| } |
| |
| /* Get the level transfer complete flag */ |
| if(CompleteLevel == HAL_DMA_FULL_TRANSFER) |
| { |
| /* Transfer Complete flag */ |
| cpltlevel_mask = DMA_FLAG_TCIF0_4 << (hdma->StreamIndex & 0x1FU); |
| } |
| else |
| { |
| /* Half Transfer Complete flag */ |
| cpltlevel_mask = DMA_FLAG_HTIF0_4 << (hdma->StreamIndex & 0x1FU); |
| } |
| |
| isr_reg = &(((DMA_Base_Registers *)hdma->StreamBaseAddress)->ISR); |
| ifcr_reg = &(((DMA_Base_Registers *)hdma->StreamBaseAddress)->IFCR); |
| } |
| else /* BDMA channel */ |
| { |
| /* Polling mode not supported in circular mode */ |
| if ((((BDMA_Channel_TypeDef *)hdma->Instance)->CCR & BDMA_CCR_CIRC) != 0U) |
| { |
| hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED; |
| return HAL_ERROR; |
| } |
| |
| /* Get the level transfer complete flag */ |
| if(CompleteLevel == HAL_DMA_FULL_TRANSFER) |
| { |
| /* Transfer Complete flag */ |
| cpltlevel_mask = BDMA_FLAG_TC0 << (hdma->StreamIndex & 0x1FU); |
| } |
| else |
| { |
| /* Half Transfer Complete flag */ |
| cpltlevel_mask = BDMA_FLAG_HT0 << (hdma->StreamIndex & 0x1FU); |
| } |
| |
| isr_reg = &(((BDMA_Base_Registers *)hdma->StreamBaseAddress)->ISR); |
| ifcr_reg = &(((BDMA_Base_Registers *)hdma->StreamBaseAddress)->IFCR); |
| } |
| |
| while(((*isr_reg) & cpltlevel_mask) == 0U) |
| { |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| if(((*isr_reg) & (DMA_FLAG_FEIF0_4 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| /* Update error code */ |
| hdma->ErrorCode |= HAL_DMA_ERROR_FE; |
| |
| /* Clear the FIFO error flag */ |
| (*ifcr_reg) = DMA_FLAG_FEIF0_4 << (hdma->StreamIndex & 0x1FU); |
| } |
| |
| if(((*isr_reg) & (DMA_FLAG_DMEIF0_4 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| /* Update error code */ |
| hdma->ErrorCode |= HAL_DMA_ERROR_DME; |
| |
| /* Clear the Direct Mode error flag */ |
| (*ifcr_reg) = DMA_FLAG_DMEIF0_4 << (hdma->StreamIndex & 0x1FU); |
| } |
| |
| if(((*isr_reg) & (DMA_FLAG_TEIF0_4 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| /* Update error code */ |
| hdma->ErrorCode |= HAL_DMA_ERROR_TE; |
| |
| /* Clear the transfer error flag */ |
| (*ifcr_reg) = DMA_FLAG_TEIF0_4 << (hdma->StreamIndex & 0x1FU); |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| return HAL_ERROR; |
| } |
| } |
| else /* BDMA channel */ |
| { |
| if(((*isr_reg) & (BDMA_FLAG_TE0 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| /* When a DMA transfer error occurs */ |
| /* A hardware clear of its EN bits is performed */ |
| /* Clear all flags */ |
| (*isr_reg) = ((BDMA_ISR_GIF0) << (hdma->StreamIndex & 0x1FU)); |
| |
| /* Update error code */ |
| hdma->ErrorCode = HAL_DMA_ERROR_TE; |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| return HAL_ERROR; |
| } |
| } |
| |
| /* Check for the Timeout (Not applicable in circular mode)*/ |
| if(Timeout != HAL_MAX_DELAY) |
| { |
| if(((HAL_GetTick() - tickstart ) > Timeout)||(Timeout == 0U)) |
| { |
| /* Update error code */ |
| hdma->ErrorCode = HAL_DMA_ERROR_TIMEOUT; |
| |
| /* if timeout then abort the current transfer */ |
| /* No need to check return value: as in this case we will return HAL_ERROR with HAL_DMA_ERROR_TIMEOUT error code */ |
| (void) HAL_DMA_Abort(hdma); |
| /* |
| Note that the Abort function will |
| - Clear the transfer error flags |
| - Unlock |
| - Set the State |
| */ |
| |
| return HAL_ERROR; |
| } |
| } |
| |
| if(IS_DMA_DMAMUX_ALL_INSTANCE(hdma->Instance) != 0U) /* No DMAMUX available for BDMA1 */ |
| { |
| /* Check for DMAMUX Request generator (if used) overrun status */ |
| if(hdma->DMAmuxRequestGen != 0U) |
| { |
| /* if using DMAMUX request generator Check for DMAMUX request generator overrun */ |
| if((hdma->DMAmuxRequestGenStatus->RGSR & hdma->DMAmuxRequestGenStatusMask) != 0U) |
| { |
| /* Clear the DMAMUX request generator overrun flag */ |
| hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask; |
| |
| /* Update error code */ |
| hdma->ErrorCode |= HAL_DMA_ERROR_REQGEN; |
| } |
| } |
| |
| /* Check for DMAMUX Synchronization overrun */ |
| if((hdma->DMAmuxChannelStatus->CSR & hdma->DMAmuxChannelStatusMask) != 0U) |
| { |
| /* Clear the DMAMUX synchro overrun flag */ |
| hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask; |
| |
| /* Update error code */ |
| hdma->ErrorCode |= HAL_DMA_ERROR_SYNC; |
| } |
| } |
| } |
| |
| |
| /* Get the level transfer complete flag */ |
| if(CompleteLevel == HAL_DMA_FULL_TRANSFER) |
| { |
| /* Clear the half transfer and transfer complete flags */ |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| (*ifcr_reg) = (DMA_FLAG_HTIF0_4 | DMA_FLAG_TCIF0_4) << (hdma->StreamIndex & 0x1FU); |
| } |
| else /* BDMA channel */ |
| { |
| (*ifcr_reg) = (BDMA_FLAG_TC0 << (hdma->StreamIndex & 0x1FU)); |
| } |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| hdma->State = HAL_DMA_STATE_READY; |
| } |
| else /*CompleteLevel = HAL_DMA_HALF_TRANSFER*/ |
| { |
| /* Clear the half transfer and transfer complete flags */ |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| (*ifcr_reg) = (DMA_FLAG_HTIF0_4) << (hdma->StreamIndex & 0x1FU); |
| } |
| else /* BDMA channel */ |
| { |
| (*ifcr_reg) = (BDMA_FLAG_HT0 << (hdma->StreamIndex & 0x1FU)); |
| } |
| } |
| |
| return status; |
| } |
| |
| /** |
| * @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) |
| { |
| uint32_t tmpisr_dma, tmpisr_bdma; |
| uint32_t ccr_reg; |
| __IO uint32_t count = 0U; |
| uint32_t timeout = SystemCoreClock / 9600U; |
| |
| /* calculate DMA base and stream number */ |
| DMA_Base_Registers *regs_dma = (DMA_Base_Registers *)hdma->StreamBaseAddress; |
| BDMA_Base_Registers *regs_bdma = (BDMA_Base_Registers *)hdma->StreamBaseAddress; |
| |
| tmpisr_dma = regs_dma->ISR; |
| tmpisr_bdma = regs_bdma->ISR; |
| |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| /* Transfer Error Interrupt management ***************************************/ |
| if ((tmpisr_dma & (DMA_FLAG_TEIF0_4 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TE) != 0U) |
| { |
| /* Disable the transfer error interrupt */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR &= ~(DMA_IT_TE); |
| |
| /* Clear the transfer error flag */ |
| regs_dma->IFCR = DMA_FLAG_TEIF0_4 << (hdma->StreamIndex & 0x1FU); |
| |
| /* Update error code */ |
| hdma->ErrorCode |= HAL_DMA_ERROR_TE; |
| } |
| } |
| /* FIFO Error Interrupt management ******************************************/ |
| if ((tmpisr_dma & (DMA_FLAG_FEIF0_4 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_FE) != 0U) |
| { |
| /* Clear the FIFO error flag */ |
| regs_dma->IFCR = DMA_FLAG_FEIF0_4 << (hdma->StreamIndex & 0x1FU); |
| |
| /* Update error code */ |
| hdma->ErrorCode |= HAL_DMA_ERROR_FE; |
| } |
| } |
| /* Direct Mode Error Interrupt management ***********************************/ |
| if ((tmpisr_dma & (DMA_FLAG_DMEIF0_4 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_DME) != 0U) |
| { |
| /* Clear the direct mode error flag */ |
| regs_dma->IFCR = DMA_FLAG_DMEIF0_4 << (hdma->StreamIndex & 0x1FU); |
| |
| /* Update error code */ |
| hdma->ErrorCode |= HAL_DMA_ERROR_DME; |
| } |
| } |
| /* Half Transfer Complete Interrupt management ******************************/ |
| if ((tmpisr_dma & (DMA_FLAG_HTIF0_4 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_HT) != 0U) |
| { |
| /* Clear the half transfer complete flag */ |
| regs_dma->IFCR = DMA_FLAG_HTIF0_4 << (hdma->StreamIndex & 0x1FU); |
| |
| /* Multi_Buffering mode enabled */ |
| if(((((DMA_Stream_TypeDef *)hdma->Instance)->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0U) |
| { |
| /* Current memory buffer used is Memory 0 */ |
| if((((DMA_Stream_TypeDef *)hdma->Instance)->CR & DMA_SxCR_CT) == 0U) |
| { |
| if(hdma->XferHalfCpltCallback != NULL) |
| { |
| /* Half transfer callback */ |
| hdma->XferHalfCpltCallback(hdma); |
| } |
| } |
| /* Current memory buffer used is Memory 1 */ |
| else |
| { |
| if(hdma->XferM1HalfCpltCallback != NULL) |
| { |
| /* Half transfer callback */ |
| hdma->XferM1HalfCpltCallback(hdma); |
| } |
| } |
| } |
| else |
| { |
| /* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */ |
| if((((DMA_Stream_TypeDef *)hdma->Instance)->CR & DMA_SxCR_CIRC) == 0U) |
| { |
| /* Disable the half transfer interrupt */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR &= ~(DMA_IT_HT); |
| } |
| |
| if(hdma->XferHalfCpltCallback != NULL) |
| { |
| /* Half transfer callback */ |
| hdma->XferHalfCpltCallback(hdma); |
| } |
| } |
| } |
| } |
| /* Transfer Complete Interrupt management ***********************************/ |
| if ((tmpisr_dma & (DMA_FLAG_TCIF0_4 << (hdma->StreamIndex & 0x1FU))) != 0U) |
| { |
| if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TC) != 0U) |
| { |
| /* Clear the transfer complete flag */ |
| regs_dma->IFCR = DMA_FLAG_TCIF0_4 << (hdma->StreamIndex & 0x1FU); |
| |
| if(HAL_DMA_STATE_ABORT == hdma->State) |
| { |
| /* Disable all the transfer interrupts */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR &= ~(DMA_IT_TC | DMA_IT_TE | DMA_IT_DME); |
| ((DMA_Stream_TypeDef *)hdma->Instance)->FCR &= ~(DMA_IT_FE); |
| |
| if((hdma->XferHalfCpltCallback != NULL) || (hdma->XferM1HalfCpltCallback != NULL)) |
| { |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR &= ~(DMA_IT_HT); |
| } |
| |
| /* Clear all interrupt flags at correct offset within the register */ |
| regs_dma->IFCR = 0x3FUL << (hdma->StreamIndex & 0x1FU); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_READY; |
| |
| if(hdma->XferAbortCallback != NULL) |
| { |
| hdma->XferAbortCallback(hdma); |
| } |
| return; |
| } |
| |
| if(((((DMA_Stream_TypeDef *)hdma->Instance)->CR) & (uint32_t)(DMA_SxCR_DBM)) != 0U) |
| { |
| /* Current memory buffer used is Memory 0 */ |
| if((((DMA_Stream_TypeDef *)hdma->Instance)->CR & DMA_SxCR_CT) == 0U) |
| { |
| if(hdma->XferM1CpltCallback != NULL) |
| { |
| /* Transfer complete Callback for memory1 */ |
| hdma->XferM1CpltCallback(hdma); |
| } |
| } |
| /* Current memory buffer used is Memory 1 */ |
| else |
| { |
| 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((((DMA_Stream_TypeDef *)hdma->Instance)->CR & DMA_SxCR_CIRC) == 0U) |
| { |
| /* Disable the transfer complete interrupt */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR &= ~(DMA_IT_TC); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_READY; |
| } |
| |
| if(hdma->XferCpltCallback != NULL) |
| { |
| /* Transfer complete callback */ |
| hdma->XferCpltCallback(hdma); |
| } |
| } |
| } |
| } |
| |
| /* manage error case */ |
| if(hdma->ErrorCode != HAL_DMA_ERROR_NONE) |
| { |
| if((hdma->ErrorCode & HAL_DMA_ERROR_TE) != 0U) |
| { |
| hdma->State = HAL_DMA_STATE_ABORT; |
| |
| /* Disable the stream */ |
| __HAL_DMA_DISABLE(hdma); |
| |
| do |
| { |
| if (++count > timeout) |
| { |
| break; |
| } |
| } |
| while((((DMA_Stream_TypeDef *)hdma->Instance)->CR & DMA_SxCR_EN) != 0U); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| if((((DMA_Stream_TypeDef *)hdma->Instance)->CR & DMA_SxCR_EN) != 0U) |
| { |
| /* Change the DMA state to error if DMA disable fails */ |
| hdma->State = HAL_DMA_STATE_ERROR; |
| } |
| else |
| { |
| /* Change the DMA state to Ready if DMA disable success */ |
| hdma->State = HAL_DMA_STATE_READY; |
| } |
| } |
| |
| if(hdma->XferErrorCallback != NULL) |
| { |
| /* Transfer error callback */ |
| hdma->XferErrorCallback(hdma); |
| } |
| } |
| } |
| else if(IS_BDMA_CHANNEL_INSTANCE(hdma->Instance) != 0U) /* BDMA instance(s) */ |
| { |
| ccr_reg = (((BDMA_Channel_TypeDef *)hdma->Instance)->CCR); |
| |
| /* Half Transfer Complete Interrupt management ******************************/ |
| if (((tmpisr_bdma & (BDMA_FLAG_HT0 << (hdma->StreamIndex & 0x1FU))) != 0U) && ((ccr_reg & BDMA_CCR_HTIE) != 0U)) |
| { |
| /* Clear the half transfer complete flag */ |
| regs_bdma->IFCR = (BDMA_ISR_HTIF0 << (hdma->StreamIndex & 0x1FU)); |
| |
| /* Disable the transfer complete interrupt if the DMA mode is Double Buffering */ |
| if((ccr_reg & BDMA_CCR_DBM) != 0U) |
| { |
| /* Current memory buffer used is Memory 0 */ |
| if((ccr_reg & BDMA_CCR_CT) == 0U) |
| { |
| if(hdma->XferM1HalfCpltCallback != NULL) |
| { |
| /* Half transfer Callback for Memory 1 */ |
| hdma->XferM1HalfCpltCallback(hdma); |
| } |
| } |
| /* Current memory buffer used is Memory 1 */ |
| else |
| { |
| if(hdma->XferHalfCpltCallback != NULL) |
| { |
| /* Half transfer Callback for Memory 0 */ |
| hdma->XferHalfCpltCallback(hdma); |
| } |
| } |
| } |
| else |
| { |
| if((ccr_reg & BDMA_CCR_CIRC) == 0U) |
| { |
| /* Disable the half transfer interrupt */ |
| __HAL_DMA_DISABLE_IT(hdma, DMA_IT_HT); |
| } |
| |
| /* DMA peripheral state is not updated in Half Transfer */ |
| /* but in Transfer Complete case */ |
| |
| if(hdma->XferHalfCpltCallback != NULL) |
| { |
| /* Half transfer callback */ |
| hdma->XferHalfCpltCallback(hdma); |
| } |
| } |
| } |
| |
| /* Transfer Complete Interrupt management ***********************************/ |
| else if (((tmpisr_bdma & (BDMA_FLAG_TC0 << (hdma->StreamIndex & 0x1FU))) != 0U) && ((ccr_reg & BDMA_CCR_TCIE) != 0U)) |
| { |
| /* Clear the transfer complete flag */ |
| regs_bdma->IFCR = (BDMA_ISR_TCIF0) << (hdma->StreamIndex & 0x1FU); |
| |
| /* Disable the transfer complete interrupt if the DMA mode is Double Buffering */ |
| if((ccr_reg & BDMA_CCR_DBM) != 0U) |
| { |
| /* Current memory buffer used is Memory 0 */ |
| if((ccr_reg & BDMA_CCR_CT) == 0U) |
| { |
| if(hdma->XferM1CpltCallback != NULL) |
| { |
| /* Transfer complete Callback for Memory 1 */ |
| hdma->XferM1CpltCallback(hdma); |
| } |
| } |
| /* Current memory buffer used is Memory 1 */ |
| else |
| { |
| if(hdma->XferCpltCallback != NULL) |
| { |
| /* Transfer complete Callback for Memory 0 */ |
| hdma->XferCpltCallback(hdma); |
| } |
| } |
| } |
| else |
| { |
| if((ccr_reg & BDMA_CCR_CIRC) == 0U) |
| { |
| /* Disable the transfer complete and error interrupt, if the DMA mode is not CIRCULAR */ |
| __HAL_DMA_DISABLE_IT(hdma, DMA_IT_TE | DMA_IT_TC); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_READY; |
| } |
| |
| if(hdma->XferCpltCallback != NULL) |
| { |
| /* Transfer complete callback */ |
| hdma->XferCpltCallback(hdma); |
| } |
| } |
| } |
| /* Transfer Error Interrupt management **************************************/ |
| else if (((tmpisr_bdma & (BDMA_FLAG_TE0 << (hdma->StreamIndex & 0x1FU))) != 0U) && ((ccr_reg & BDMA_CCR_TEIE) != 0U)) |
| { |
| /* When a DMA transfer error occurs */ |
| /* A hardware clear of its EN bits is performed */ |
| /* Disable ALL DMA IT */ |
| __HAL_DMA_DISABLE_IT(hdma, (DMA_IT_TC | DMA_IT_HT | DMA_IT_TE)); |
| |
| /* Clear all flags */ |
| regs_bdma->IFCR = (BDMA_ISR_GIF0) << (hdma->StreamIndex & 0x1FU); |
| |
| /* Update error code */ |
| hdma->ErrorCode = HAL_DMA_ERROR_TE; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(hdma); |
| |
| /* Change the DMA state */ |
| hdma->State = HAL_DMA_STATE_READY; |
| |
| if (hdma->XferErrorCallback != NULL) |
| { |
| /* Transfer error callback */ |
| hdma->XferErrorCallback(hdma); |
| } |
| } |
| else |
| { |
| /* Nothing To Do */ |
| } |
| } |
| else |
| { |
| /* Nothing To Do */ |
| } |
| } |
| |
| /** |
| * @brief Register callbacks |
| * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA Stream. |
| * @param CallbackID: User Callback identifier |
| * a DMA_HandleTypeDef structure as parameter. |
| * @param pCallback: pointer to private callback function which has pointer to |
| * a DMA_HandleTypeDef structure as parameter. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_DMA_RegisterCallback(DMA_HandleTypeDef *hdma, HAL_DMA_CallbackIDTypeDef CallbackID, void (* pCallback)(DMA_HandleTypeDef *_hdma)) |
| { |
| |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process locked */ |
| __HAL_LOCK(hdma); |
| |
| if(HAL_DMA_STATE_READY == hdma->State) |
| { |
| switch (CallbackID) |
| { |
| case HAL_DMA_XFER_CPLT_CB_ID: |
| hdma->XferCpltCallback = pCallback; |
| break; |
| |
| case HAL_DMA_XFER_HALFCPLT_CB_ID: |
| hdma->XferHalfCpltCallback = pCallback; |
| break; |
| |
| case HAL_DMA_XFER_M1CPLT_CB_ID: |
| hdma->XferM1CpltCallback = pCallback; |
| break; |
| |
| case HAL_DMA_XFER_M1HALFCPLT_CB_ID: |
| hdma->XferM1HalfCpltCallback = pCallback; |
| break; |
| |
| case HAL_DMA_XFER_ERROR_CB_ID: |
| hdma->XferErrorCallback = pCallback; |
| break; |
| |
| case HAL_DMA_XFER_ABORT_CB_ID: |
| hdma->XferAbortCallback = pCallback; |
| break; |
| |
| default: |
| break; |
| } |
| } |
| else |
| { |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hdma); |
| |
| return status; |
| } |
| |
| /** |
| * @brief UnRegister callbacks |
| * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA Stream. |
| * @param CallbackID: User Callback identifier |
| * a HAL_DMA_CallbackIDTypeDef ENUM as parameter. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_DMA_UnRegisterCallback(DMA_HandleTypeDef *hdma, HAL_DMA_CallbackIDTypeDef CallbackID) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Check the DMA peripheral handle */ |
| if(hdma == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process locked */ |
| __HAL_LOCK(hdma); |
| |
| if(HAL_DMA_STATE_READY == hdma->State) |
| { |
| switch (CallbackID) |
| { |
| case HAL_DMA_XFER_CPLT_CB_ID: |
| hdma->XferCpltCallback = NULL; |
| break; |
| |
| case HAL_DMA_XFER_HALFCPLT_CB_ID: |
| hdma->XferHalfCpltCallback = NULL; |
| break; |
| |
| case HAL_DMA_XFER_M1CPLT_CB_ID: |
| hdma->XferM1CpltCallback = NULL; |
| break; |
| |
| case HAL_DMA_XFER_M1HALFCPLT_CB_ID: |
| hdma->XferM1HalfCpltCallback = NULL; |
| break; |
| |
| case HAL_DMA_XFER_ERROR_CB_ID: |
| hdma->XferErrorCallback = NULL; |
| break; |
| |
| case HAL_DMA_XFER_ABORT_CB_ID: |
| hdma->XferAbortCallback = NULL; |
| break; |
| |
| case HAL_DMA_XFER_ALL_CB_ID: |
| hdma->XferCpltCallback = NULL; |
| hdma->XferHalfCpltCallback = NULL; |
| hdma->XferM1CpltCallback = NULL; |
| hdma->XferM1HalfCpltCallback = NULL; |
| hdma->XferErrorCallback = NULL; |
| hdma->XferAbortCallback = NULL; |
| break; |
| |
| default: |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(hdma); |
| |
| return status; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @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 None |
| */ |
| static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength) |
| { |
| /* calculate DMA base and stream number */ |
| DMA_Base_Registers *regs_dma = (DMA_Base_Registers *)hdma->StreamBaseAddress; |
| BDMA_Base_Registers *regs_bdma = (BDMA_Base_Registers *)hdma->StreamBaseAddress; |
| |
| if(IS_DMA_DMAMUX_ALL_INSTANCE(hdma->Instance) != 0U) /* No DMAMUX available for BDMA1 */ |
| { |
| /* Clear the DMAMUX synchro overrun flag */ |
| hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask; |
| |
| if(hdma->DMAmuxRequestGen != 0U) |
| { |
| /* Clear the DMAMUX request generator overrun flag */ |
| hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask; |
| } |
| } |
| |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| /* Clear all interrupt flags at correct offset within the register */ |
| regs_dma->IFCR = 0x3FUL << (hdma->StreamIndex & 0x1FU); |
| |
| /* Clear DBM bit */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->CR &= (uint32_t)(~DMA_SxCR_DBM); |
| |
| /* Configure DMA Stream data length */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->NDTR = DataLength; |
| |
| /* Peripheral to Memory */ |
| if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH) |
| { |
| /* Configure DMA Stream destination address */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->PAR = DstAddress; |
| |
| /* Configure DMA Stream source address */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->M0AR = SrcAddress; |
| } |
| /* Memory to Peripheral */ |
| else |
| { |
| /* Configure DMA Stream source address */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->PAR = SrcAddress; |
| |
| /* Configure DMA Stream destination address */ |
| ((DMA_Stream_TypeDef *)hdma->Instance)->M0AR = DstAddress; |
| } |
| } |
| else if(IS_BDMA_CHANNEL_INSTANCE(hdma->Instance) != 0U) /* BDMA instance(s) */ |
| { |
| /* Clear all flags */ |
| regs_bdma->IFCR = (BDMA_ISR_GIF0) << (hdma->StreamIndex & 0x1FU); |
| |
| /* Configure DMA Channel data length */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CNDTR = DataLength; |
| |
| /* Peripheral to Memory */ |
| if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH) |
| { |
| /* Configure DMA Channel destination address */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CPAR = DstAddress; |
| |
| /* Configure DMA Channel source address */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CM0AR = SrcAddress; |
| } |
| /* Memory to Peripheral */ |
| else |
| { |
| /* Configure DMA Channel source address */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CPAR = SrcAddress; |
| |
| /* Configure DMA Channel destination address */ |
| ((BDMA_Channel_TypeDef *)hdma->Instance)->CM0AR = DstAddress; |
| } |
| } |
| else |
| { |
| /* Nothing To Do */ |
| } |
| } |
| |
| /** |
| * @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) |
| { |
| if(IS_DMA_STREAM_INSTANCE(hdma->Instance) != 0U) /* DMA1 or DMA2 instance */ |
| { |
| uint32_t stream_number = (((uint32_t)((uint32_t*)hdma->Instance) & 0xFFU) - 16U) / 24U; |
| |
| /* lookup table for necessary bitshift of flags within status registers */ |
| static const uint8_t flagBitshiftOffset[8U] = {0U, 6U, 16U, 22U, 0U, 6U, 16U, 22U}; |
| hdma->StreamIndex = flagBitshiftOffset[stream_number & 0x7U]; |
| |
| if (stream_number > 3U) |
| { |
| /* return pointer to HISR and HIFCR */ |
| hdma->StreamBaseAddress = (((uint32_t)((uint32_t*)hdma->Instance) & (uint32_t)(~0x3FFU)) + 4U); |
| } |
| else |
| { |
| /* return pointer to LISR and LIFCR */ |
| hdma->StreamBaseAddress = ((uint32_t)((uint32_t*)hdma->Instance) & (uint32_t)(~0x3FFU)); |
| } |
| } |
| else /* BDMA instance(s) */ |
| { |
| /* return pointer to ISR and IFCR */ |
| hdma->StreamBaseAddress = ((uint32_t)((uint32_t*)hdma->Instance) & (uint32_t)(~0xFFU)); |
| } |
| |
| return hdma->StreamBaseAddress; |
| } |
| |
| /** |
| * @brief Check compatibility between FIFO threshold level and size of the memory burst |
| * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA Stream. |
| * @retval HAL status |
| */ |
| static HAL_StatusTypeDef DMA_CheckFifoParam(DMA_HandleTypeDef *hdma) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Memory Data size equal to Byte */ |
| if (hdma->Init.MemDataAlignment == DMA_MDATAALIGN_BYTE) |
| { |
| switch (hdma->Init.FIFOThreshold) |
| { |
| case DMA_FIFO_THRESHOLD_1QUARTERFULL: |
| case DMA_FIFO_THRESHOLD_3QUARTERSFULL: |
| |
| if ((hdma->Init.MemBurst & DMA_SxCR_MBURST_1) == DMA_SxCR_MBURST_1) |
| { |
| status = HAL_ERROR; |
| } |
| break; |
| |
| case DMA_FIFO_THRESHOLD_HALFFULL: |
| if (hdma->Init.MemBurst == DMA_MBURST_INC16) |
| { |
| status = HAL_ERROR; |
| } |
| break; |
| |
| case DMA_FIFO_THRESHOLD_FULL: |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| /* Memory Data size equal to Half-Word */ |
| else if (hdma->Init.MemDataAlignment == DMA_MDATAALIGN_HALFWORD) |
| { |
| switch (hdma->Init.FIFOThreshold) |
| { |
| case DMA_FIFO_THRESHOLD_1QUARTERFULL: |
| case DMA_FIFO_THRESHOLD_3QUARTERSFULL: |
| status = HAL_ERROR; |
| break; |
| |
| case DMA_FIFO_THRESHOLD_HALFFULL: |
| if ((hdma->Init.MemBurst & DMA_SxCR_MBURST_1) == DMA_SxCR_MBURST_1) |
| { |
| status = HAL_ERROR; |
| } |
| break; |
| |
| case DMA_FIFO_THRESHOLD_FULL: |
| if (hdma->Init.MemBurst == DMA_MBURST_INC16) |
| { |
| status = HAL_ERROR; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| /* Memory Data size equal to Word */ |
| else |
| { |
| switch (hdma->Init.FIFOThreshold) |
| { |
| case DMA_FIFO_THRESHOLD_1QUARTERFULL: |
| case DMA_FIFO_THRESHOLD_HALFFULL: |
| case DMA_FIFO_THRESHOLD_3QUARTERSFULL: |
| status = HAL_ERROR; |
| break; |
| |
| case DMA_FIFO_THRESHOLD_FULL: |
| if ((hdma->Init.MemBurst & DMA_SxCR_MBURST_1) == DMA_SxCR_MBURST_1) |
| { |
| status = HAL_ERROR; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| return status; |
| } |
| |
| /** |
| * @brief Updates the DMA handle with the DMAMUX channel and status mask depending on stream number |
| * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA Stream. |
| * @retval HAL status |
| */ |
| static void DMA_CalcDMAMUXChannelBaseAndMask(DMA_HandleTypeDef *hdma) |
| { |
| uint32_t stream_number; |
| uint32_t stream_baseaddress = (uint32_t)((uint32_t*)hdma->Instance); |
| |
| if(IS_BDMA_CHANNEL_DMAMUX_INSTANCE(hdma->Instance) != 0U) |
| { |
| /* BDMA Channels are connected to DMAMUX2 channels */ |
| stream_number = (((uint32_t)((uint32_t*)hdma->Instance) & 0xFFU) - 8U) / 20U; |
| hdma->DMAmuxChannel = (DMAMUX_Channel_TypeDef *)((uint32_t)(((uint32_t)DMAMUX2_Channel0) + (stream_number * 4U))); |
| hdma->DMAmuxChannelStatus = DMAMUX2_ChannelStatus; |
| hdma->DMAmuxChannelStatusMask = 1UL << (stream_number & 0x1FU); |
| } |
| else |
| { |
| /* DMA1/DMA2 Streams are connected to DMAMUX1 channels */ |
| stream_number = (((uint32_t)((uint32_t*)hdma->Instance) & 0xFFU) - 16U) / 24U; |
| |
| if((stream_baseaddress <= ((uint32_t)DMA2_Stream7) ) && \ |
| (stream_baseaddress >= ((uint32_t)DMA2_Stream0))) |
| { |
| stream_number += 8U; |
| } |
| hdma->DMAmuxChannel = (DMAMUX_Channel_TypeDef *)((uint32_t)(((uint32_t)DMAMUX1_Channel0) + (stream_number * 4U))); |
| hdma->DMAmuxChannelStatus = DMAMUX1_ChannelStatus; |
| hdma->DMAmuxChannelStatusMask = 1UL << (stream_number & 0x1FU); |
| } |
| } |
| |
| /** |
| * @brief Updates the DMA handle with the DMAMUX request generator params |
| * @param hdma: pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA Stream. |
| * @retval HAL status |
| */ |
| static void DMA_CalcDMAMUXRequestGenBaseAndMask(DMA_HandleTypeDef *hdma) |
| { |
| uint32_t request = hdma->Init.Request & DMAMUX_CxCR_DMAREQ_ID; |
| |
| if((request >= DMA_REQUEST_GENERATOR0) && (request <= DMA_REQUEST_GENERATOR7)) |
| { |
| if(IS_BDMA_CHANNEL_DMAMUX_INSTANCE(hdma->Instance) != 0U) |
| { |
| /* BDMA Channels are connected to DMAMUX2 request generator blocks */ |
| hdma->DMAmuxRequestGen = (DMAMUX_RequestGen_TypeDef *)((uint32_t)(((uint32_t)DMAMUX2_RequestGenerator0) + ((request - 1U) * 4U))); |
| |
| hdma->DMAmuxRequestGenStatus = DMAMUX2_RequestGenStatus; |
| } |
| else |
| { |
| /* DMA1 and DMA2 Streams use DMAMUX1 request generator blocks */ |
| hdma->DMAmuxRequestGen = (DMAMUX_RequestGen_TypeDef *)((uint32_t)(((uint32_t)DMAMUX1_RequestGenerator0) + ((request - 1U) * 4U))); |
| |
| hdma->DMAmuxRequestGenStatus = DMAMUX1_RequestGenStatus; |
| } |
| |
| hdma->DMAmuxRequestGenStatusMask = 1UL << (request - 1U); |
| } |
| } |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* HAL_DMA_MODULE_ENABLED */ |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
