/** ****************************************************************************** * @file stm32f7xx_ll_dma.c * @author MCD Application Team * @brief DMA LL module driver. ****************************************************************************** * @attention * * Copyright (c) 2017 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file in * the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ #if defined(USE_FULL_LL_DRIVER) /* Includes ------------------------------------------------------------------*/ #include "stm32f7xx_ll_dma.h" #include "stm32f7xx_ll_bus.h" #ifdef USE_FULL_ASSERT #include "stm32_assert.h" #else #define assert_param(expr) ((void)0U) #endif /** @addtogroup STM32F7xx_LL_Driver * @{ */ #if defined (DMA1) || defined (DMA2) /** @defgroup DMA_LL DMA * @{ */ /* Private types -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private constants ---------------------------------------------------------*/ /* Private macros ------------------------------------------------------------*/ /** @addtogroup DMA_LL_Private_Macros * @{ */ #define IS_LL_DMA_DIRECTION(__VALUE__) (((__VALUE__) == LL_DMA_DIRECTION_PERIPH_TO_MEMORY) || \ ((__VALUE__) == LL_DMA_DIRECTION_MEMORY_TO_PERIPH) || \ ((__VALUE__) == LL_DMA_DIRECTION_MEMORY_TO_MEMORY)) #define IS_LL_DMA_MODE(__VALUE__) (((__VALUE__) == LL_DMA_MODE_NORMAL) || \ ((__VALUE__) == LL_DMA_MODE_CIRCULAR) || \ ((__VALUE__) == LL_DMA_MODE_PFCTRL)) #define IS_LL_DMA_PERIPHINCMODE(__VALUE__) (((__VALUE__) == LL_DMA_PERIPH_INCREMENT) || \ ((__VALUE__) == LL_DMA_PERIPH_NOINCREMENT)) #define IS_LL_DMA_MEMORYINCMODE(__VALUE__) (((__VALUE__) == LL_DMA_MEMORY_INCREMENT) || \ ((__VALUE__) == LL_DMA_MEMORY_NOINCREMENT)) #define IS_LL_DMA_PERIPHDATASIZE(__VALUE__) (((__VALUE__) == LL_DMA_PDATAALIGN_BYTE) || \ ((__VALUE__) == LL_DMA_PDATAALIGN_HALFWORD) || \ ((__VALUE__) == LL_DMA_PDATAALIGN_WORD)) #define IS_LL_DMA_MEMORYDATASIZE(__VALUE__) (((__VALUE__) == LL_DMA_MDATAALIGN_BYTE) || \ ((__VALUE__) == LL_DMA_MDATAALIGN_HALFWORD) || \ ((__VALUE__) == LL_DMA_MDATAALIGN_WORD)) #define IS_LL_DMA_NBDATA(__VALUE__) ((__VALUE__) <= 0x0000FFFFU) #if defined(DMA_CHANNEL_SELECTION_8_15) #define IS_LL_DMA_CHANNEL(__VALUE__) (((__VALUE__) == LL_DMA_CHANNEL_0) || \ ((__VALUE__) == LL_DMA_CHANNEL_1) || \ ((__VALUE__) == LL_DMA_CHANNEL_2) || \ ((__VALUE__) == LL_DMA_CHANNEL_3) || \ ((__VALUE__) == LL_DMA_CHANNEL_4) || \ ((__VALUE__) == LL_DMA_CHANNEL_5) || \ ((__VALUE__) == LL_DMA_CHANNEL_6) || \ ((__VALUE__) == LL_DMA_CHANNEL_7) || \ ((__VALUE__) == LL_DMA_CHANNEL_8) || \ ((__VALUE__) == LL_DMA_CHANNEL_9) || \ ((__VALUE__) == LL_DMA_CHANNEL_10) || \ ((__VALUE__) == LL_DMA_CHANNEL_11) || \ ((__VALUE__) == LL_DMA_CHANNEL_12) || \ ((__VALUE__) == LL_DMA_CHANNEL_13) || \ ((__VALUE__) == LL_DMA_CHANNEL_14) || \ ((__VALUE__) == LL_DMA_CHANNEL_15)) #else #define IS_LL_DMA_CHANNEL(__VALUE__) (((__VALUE__) == LL_DMA_CHANNEL_0) || \ ((__VALUE__) == LL_DMA_CHANNEL_1) || \ ((__VALUE__) == LL_DMA_CHANNEL_2) || \ ((__VALUE__) == LL_DMA_CHANNEL_3) || \ ((__VALUE__) == LL_DMA_CHANNEL_4) || \ ((__VALUE__) == LL_DMA_CHANNEL_5) || \ ((__VALUE__) == LL_DMA_CHANNEL_6) || \ ((__VALUE__) == LL_DMA_CHANNEL_7)) #endif /* DMA_CHANNEL_SELECTION_8_15 */ #define IS_LL_DMA_PRIORITY(__VALUE__) (((__VALUE__) == LL_DMA_PRIORITY_LOW) || \ ((__VALUE__) == LL_DMA_PRIORITY_MEDIUM) || \ ((__VALUE__) == LL_DMA_PRIORITY_HIGH) || \ ((__VALUE__) == LL_DMA_PRIORITY_VERYHIGH)) #define IS_LL_DMA_ALL_STREAM_INSTANCE(INSTANCE, STREAM) ((((INSTANCE) == DMA1) && \ (((STREAM) == LL_DMA_STREAM_0) || \ ((STREAM) == LL_DMA_STREAM_1) || \ ((STREAM) == LL_DMA_STREAM_2) || \ ((STREAM) == LL_DMA_STREAM_3) || \ ((STREAM) == LL_DMA_STREAM_4) || \ ((STREAM) == LL_DMA_STREAM_5) || \ ((STREAM) == LL_DMA_STREAM_6) || \ ((STREAM) == LL_DMA_STREAM_7) || \ ((STREAM) == LL_DMA_STREAM_ALL))) ||\ (((INSTANCE) == DMA2) && \ (((STREAM) == LL_DMA_STREAM_0) || \ ((STREAM) == LL_DMA_STREAM_1) || \ ((STREAM) == LL_DMA_STREAM_2) || \ ((STREAM) == LL_DMA_STREAM_3) || \ ((STREAM) == LL_DMA_STREAM_4) || \ ((STREAM) == LL_DMA_STREAM_5) || \ ((STREAM) == LL_DMA_STREAM_6) || \ ((STREAM) == LL_DMA_STREAM_7) || \ ((STREAM) == LL_DMA_STREAM_ALL)))) #define IS_LL_DMA_FIFO_MODE_STATE(STATE) (((STATE) == LL_DMA_FIFOMODE_DISABLE ) || \ ((STATE) == LL_DMA_FIFOMODE_ENABLE)) #define IS_LL_DMA_FIFO_THRESHOLD(THRESHOLD) (((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_1_4) || \ ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_1_2) || \ ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_3_4) || \ ((THRESHOLD) == LL_DMA_FIFOTHRESHOLD_FULL)) #define IS_LL_DMA_MEMORY_BURST(BURST) (((BURST) == LL_DMA_MBURST_SINGLE) || \ ((BURST) == LL_DMA_MBURST_INC4) || \ ((BURST) == LL_DMA_MBURST_INC8) || \ ((BURST) == LL_DMA_MBURST_INC16)) #define IS_LL_DMA_PERIPHERAL_BURST(BURST) (((BURST) == LL_DMA_PBURST_SINGLE) || \ ((BURST) == LL_DMA_PBURST_INC4) || \ ((BURST) == LL_DMA_PBURST_INC8) || \ ((BURST) == LL_DMA_PBURST_INC16)) /** * @} */ /* Private function prototypes -----------------------------------------------*/ /* Exported functions --------------------------------------------------------*/ /** @addtogroup DMA_LL_Exported_Functions * @{ */ /** @addtogroup DMA_LL_EF_Init * @{ */ /** * @brief De-initialize the DMA registers to their default reset values. * @param DMAx DMAx Instance * @param Stream This parameter can be one of the following values: * @arg @ref LL_DMA_STREAM_0 * @arg @ref LL_DMA_STREAM_1 * @arg @ref LL_DMA_STREAM_2 * @arg @ref LL_DMA_STREAM_3 * @arg @ref LL_DMA_STREAM_4 * @arg @ref LL_DMA_STREAM_5 * @arg @ref LL_DMA_STREAM_6 * @arg @ref LL_DMA_STREAM_7 * @arg @ref LL_DMA_STREAM_ALL * @retval An ErrorStatus enumeration value: * - SUCCESS: DMA registers are de-initialized * - ERROR: DMA registers are not de-initialized */ uint32_t LL_DMA_DeInit(DMA_TypeDef *DMAx, uint32_t Stream) { DMA_Stream_TypeDef *tmp = (DMA_Stream_TypeDef *)DMA1_Stream0; ErrorStatus status = SUCCESS; /* Check the DMA Instance DMAx and Stream parameters*/ assert_param(IS_LL_DMA_ALL_STREAM_INSTANCE(DMAx, Stream)); if (Stream == LL_DMA_STREAM_ALL) { if (DMAx == DMA1) { /* Force reset of DMA clock */ LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA1); /* Release reset of DMA clock */ LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA1); } else if (DMAx == DMA2) { /* Force reset of DMA clock */ LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_DMA2); /* Release reset of DMA clock */ LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_DMA2); } else { status = ERROR; } } else { /* Disable the selected Stream */ LL_DMA_DisableStream(DMAx,Stream); /* Get the DMA Stream Instance */ tmp = (DMA_Stream_TypeDef *)(__LL_DMA_GET_STREAM_INSTANCE(DMAx, Stream)); /* Reset DMAx_Streamy configuration register */ LL_DMA_WriteReg(tmp, CR, 0U); /* Reset DMAx_Streamy remaining bytes register */ LL_DMA_WriteReg(tmp, NDTR, 0U); /* Reset DMAx_Streamy peripheral address register */ LL_DMA_WriteReg(tmp, PAR, 0U); /* Reset DMAx_Streamy memory address register */ LL_DMA_WriteReg(tmp, M0AR, 0U); /* Reset DMAx_Streamy memory address register */ LL_DMA_WriteReg(tmp, M1AR, 0U); /* Reset DMAx_Streamy FIFO control register */ LL_DMA_WriteReg(tmp, FCR, 0x00000021U); /* Reset Channel register field for DMAx Stream*/ LL_DMA_SetChannelSelection(DMAx, Stream, LL_DMA_CHANNEL_0); if(Stream == LL_DMA_STREAM_0) { /* Reset the Stream0 pending flags */ DMAx->LIFCR = 0x0000003FU; } else if(Stream == LL_DMA_STREAM_1) { /* Reset the Stream1 pending flags */ DMAx->LIFCR = 0x00000F40U; } else if(Stream == LL_DMA_STREAM_2) { /* Reset the Stream2 pending flags */ DMAx->LIFCR = 0x003F0000U; } else if(Stream == LL_DMA_STREAM_3) { /* Reset the Stream3 pending flags */ DMAx->LIFCR = 0x0F400000U; } else if(Stream == LL_DMA_STREAM_4) { /* Reset the Stream4 pending flags */ DMAx->HIFCR = 0x0000003FU; } else if(Stream == LL_DMA_STREAM_5) { /* Reset the Stream5 pending flags */ DMAx->HIFCR = 0x00000F40U; } else if(Stream == LL_DMA_STREAM_6) { /* Reset the Stream6 pending flags */ DMAx->HIFCR = 0x003F0000U; } else if(Stream == LL_DMA_STREAM_7) { /* Reset the Stream7 pending flags */ DMAx->HIFCR = 0x0F400000U; } else { status = ERROR; } } return status; } /** * @brief Initialize the DMA registers according to the specified parameters in DMA_InitStruct. * @note To convert DMAx_Streamy Instance to DMAx Instance and Streamy, use helper macros : * @arg @ref __LL_DMA_GET_INSTANCE * @arg @ref __LL_DMA_GET_STREAM * @param DMAx DMAx Instance * @param Stream This parameter can be one of the following values: * @arg @ref LL_DMA_STREAM_0 * @arg @ref LL_DMA_STREAM_1 * @arg @ref LL_DMA_STREAM_2 * @arg @ref LL_DMA_STREAM_3 * @arg @ref LL_DMA_STREAM_4 * @arg @ref LL_DMA_STREAM_5 * @arg @ref LL_DMA_STREAM_6 * @arg @ref LL_DMA_STREAM_7 * @param DMA_InitStruct pointer to a @ref LL_DMA_InitTypeDef structure. * @retval An ErrorStatus enumeration value: * - SUCCESS: DMA registers are initialized * - ERROR: Not applicable */ uint32_t LL_DMA_Init(DMA_TypeDef *DMAx, uint32_t Stream, LL_DMA_InitTypeDef *DMA_InitStruct) { /* Check the DMA Instance DMAx and Stream parameters*/ assert_param(IS_LL_DMA_ALL_STREAM_INSTANCE(DMAx, Stream)); /* Check the DMA parameters from DMA_InitStruct */ assert_param(IS_LL_DMA_DIRECTION(DMA_InitStruct->Direction)); assert_param(IS_LL_DMA_MODE(DMA_InitStruct->Mode)); assert_param(IS_LL_DMA_PERIPHINCMODE(DMA_InitStruct->PeriphOrM2MSrcIncMode)); assert_param(IS_LL_DMA_MEMORYINCMODE(DMA_InitStruct->MemoryOrM2MDstIncMode)); assert_param(IS_LL_DMA_PERIPHDATASIZE(DMA_InitStruct->PeriphOrM2MSrcDataSize)); assert_param(IS_LL_DMA_MEMORYDATASIZE(DMA_InitStruct->MemoryOrM2MDstDataSize)); assert_param(IS_LL_DMA_NBDATA(DMA_InitStruct->NbData)); assert_param(IS_LL_DMA_CHANNEL(DMA_InitStruct->Channel)); assert_param(IS_LL_DMA_PRIORITY(DMA_InitStruct->Priority)); assert_param(IS_LL_DMA_FIFO_MODE_STATE(DMA_InitStruct->FIFOMode)); /* Check the memory burst, peripheral burst and FIFO threshold parameters only when FIFO mode is enabled */ if(DMA_InitStruct->FIFOMode != LL_DMA_FIFOMODE_DISABLE) { assert_param(IS_LL_DMA_FIFO_THRESHOLD(DMA_InitStruct->FIFOThreshold)); assert_param(IS_LL_DMA_MEMORY_BURST(DMA_InitStruct->MemBurst)); assert_param(IS_LL_DMA_PERIPHERAL_BURST(DMA_InitStruct->PeriphBurst)); } /*---------------------------- DMAx SxCR Configuration ------------------------ * Configure DMAx_Streamy: data transfer direction, data transfer mode, * peripheral and memory increment mode, * data size alignment and priority level with parameters : * - Direction: DMA_SxCR_DIR[1:0] bits * - Mode: DMA_SxCR_CIRC bit * - PeriphOrM2MSrcIncMode: DMA_SxCR_PINC bit * - MemoryOrM2MDstIncMode: DMA_SxCR_MINC bit * - PeriphOrM2MSrcDataSize: DMA_SxCR_PSIZE[1:0] bits * - MemoryOrM2MDstDataSize: DMA_SxCR_MSIZE[1:0] bits * - Priority: DMA_SxCR_PL[1:0] bits */ LL_DMA_ConfigTransfer(DMAx, Stream, DMA_InitStruct->Direction | \ DMA_InitStruct->Mode | \ DMA_InitStruct->PeriphOrM2MSrcIncMode | \ DMA_InitStruct->MemoryOrM2MDstIncMode | \ DMA_InitStruct->PeriphOrM2MSrcDataSize | \ DMA_InitStruct->MemoryOrM2MDstDataSize | \ DMA_InitStruct->Priority ); if(DMA_InitStruct->FIFOMode != LL_DMA_FIFOMODE_DISABLE) { /*---------------------------- DMAx SxFCR Configuration ------------------------ * Configure DMAx_Streamy: fifo mode and fifo threshold with parameters : * - FIFOMode: DMA_SxFCR_DMDIS bit * - FIFOThreshold: DMA_SxFCR_FTH[1:0] bits */ LL_DMA_ConfigFifo(DMAx, Stream, DMA_InitStruct->FIFOMode, DMA_InitStruct->FIFOThreshold); /*---------------------------- DMAx SxCR Configuration -------------------------- * Configure DMAx_Streamy: memory burst transfer with parameters : * - MemBurst: DMA_SxCR_MBURST[1:0] bits */ LL_DMA_SetMemoryBurstxfer(DMAx,Stream,DMA_InitStruct->MemBurst); /*---------------------------- DMAx SxCR Configuration -------------------------- * Configure DMAx_Streamy: peripheral burst transfer with parameters : * - PeriphBurst: DMA_SxCR_PBURST[1:0] bits */ LL_DMA_SetPeriphBurstxfer(DMAx,Stream,DMA_InitStruct->PeriphBurst); } /*-------------------------- DMAx SxM0AR Configuration -------------------------- * Configure the memory or destination base address with parameter : * - MemoryOrM2MDstAddress: DMA_SxM0AR_M0A[31:0] bits */ LL_DMA_SetMemoryAddress(DMAx, Stream, DMA_InitStruct->MemoryOrM2MDstAddress); /*-------------------------- DMAx SxPAR Configuration --------------------------- * Configure the peripheral or source base address with parameter : * - PeriphOrM2MSrcAddress: DMA_SxPAR_PA[31:0] bits */ LL_DMA_SetPeriphAddress(DMAx, Stream, DMA_InitStruct->PeriphOrM2MSrcAddress); /*--------------------------- DMAx SxNDTR Configuration ------------------------- * Configure the peripheral base address with parameter : * - NbData: DMA_SxNDT[15:0] bits */ LL_DMA_SetDataLength(DMAx, Stream, DMA_InitStruct->NbData); /*--------------------------- DMA SxCR_CHSEL Configuration ---------------------- * Configure the peripheral base address with parameter : * - PeriphRequest: DMA_SxCR_CHSEL[3:0] bits */ LL_DMA_SetChannelSelection(DMAx, Stream, DMA_InitStruct->Channel); return SUCCESS; } /** * @brief Set each @ref LL_DMA_InitTypeDef field to default value. * @param DMA_InitStruct Pointer to a @ref LL_DMA_InitTypeDef structure. * @retval None */ void LL_DMA_StructInit(LL_DMA_InitTypeDef *DMA_InitStruct) { /* Set DMA_InitStruct fields to default values */ DMA_InitStruct->PeriphOrM2MSrcAddress = 0x00000000U; DMA_InitStruct->MemoryOrM2MDstAddress = 0x00000000U; DMA_InitStruct->Direction = LL_DMA_DIRECTION_PERIPH_TO_MEMORY; DMA_InitStruct->Mode = LL_DMA_MODE_NORMAL; DMA_InitStruct->PeriphOrM2MSrcIncMode = LL_DMA_PERIPH_NOINCREMENT; DMA_InitStruct->MemoryOrM2MDstIncMode = LL_DMA_MEMORY_NOINCREMENT; DMA_InitStruct->PeriphOrM2MSrcDataSize = LL_DMA_PDATAALIGN_BYTE; DMA_InitStruct->MemoryOrM2MDstDataSize = LL_DMA_MDATAALIGN_BYTE; DMA_InitStruct->NbData = 0x00000000U; DMA_InitStruct->Channel = LL_DMA_CHANNEL_0; DMA_InitStruct->Priority = LL_DMA_PRIORITY_LOW; DMA_InitStruct->FIFOMode = LL_DMA_FIFOMODE_DISABLE; DMA_InitStruct->FIFOThreshold = LL_DMA_FIFOTHRESHOLD_1_4; DMA_InitStruct->MemBurst = LL_DMA_MBURST_SINGLE; DMA_InitStruct->PeriphBurst = LL_DMA_PBURST_SINGLE; } /** * @} */ /** * @} */ /** * @} */ #endif /* DMA1 || DMA2 */ /** * @} */ #endif /* USE_FULL_LL_DRIVER */