1313 lines
		
	
	
		
			39 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			1313 lines
		
	
	
		
			39 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /**
 | |
|   ******************************************************************************
 | |
|   * @file    stm32f7xx_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:
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|        Transfer Direction, Source and Destination data formats, 
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|        Circular, Normal or peripheral flow control mode, Stream Priority level, 
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|        Source and Destination Increment mode, FIFO mode and its Threshold (if needed), 
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|        Burst mode for Source and/or Destination (if needed) using HAL_DMA_Init() function.
 | |
| 
 | |
|    -@-   Prior to HAL_DMA_Init() the clock must be enabled for DMA through the following macros:
 | |
|          __HAL_RCC_DMA1_CLK_ENABLE() or __HAL_RCC_DMA2_CLK_ENABLE().
 | |
| 
 | |
|      *** 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.
 | |
|           (+) Use HAL_DMA_Abort() function to abort the current transfer.
 | |
| 
 | |
|      *** Interrupt mode IO operation ***
 | |
|      ===================================
 | |
|     [..]
 | |
|           (+) Configure the DMA interrupt priority using HAL_NVIC_SetPriority()
 | |
|           (+) Enable the DMA IRQ handler using HAL_NVIC_EnableIRQ()
 | |
|           (+) Select Callbacks functions using HAL_DMA_RegisterCallback()
 | |
|           (+) 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 
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|           (+) 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 
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|               add his own function by customization of function pointer XferCpltCallback and 
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|               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 
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|          detection.
 | |
| 
 | |
|      (#) Use HAL_DMA_Abort_IT() 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
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|            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_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
 | |
|   *
 | |
|   * 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.
 | |
|   *
 | |
|   ******************************************************************************
 | |
|   */ 
 | |
| 
 | |
| /* Includes ------------------------------------------------------------------*/
 | |
| #include "stm32f7xx_hal.h"
 | |
| 
 | |
| /** @addtogroup STM32F7xx_HAL_Driver
 | |
|   * @{
 | |
|   */
 | |
| 
 | |
| /** @defgroup DMA DMA
 | |
|   * @brief DMA HAL module driver
 | |
|   * @{
 | |
|   */
 | |
| 
 | |
| #ifdef HAL_DMA_MODULE_ENABLED
 | |
| 
 | |
| /* Private types -------------------------------------------------------------*/
 | |
| typedef struct
 | |
| {
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|   __IO uint32_t ISR;   /*!< DMA interrupt status register */
 | |
|   __IO uint32_t Reserved0;
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|   __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)5)  /* 5 ms */
 | |
| /**
 | |
|   * @}
 | |
|   */
 | |
| /* 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);
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| static HAL_StatusTypeDef DMA_CheckFifoParam(DMA_HandleTypeDef *hdma);
 | |
| 
 | |
| /**
 | |
|   * @}
 | |
|   */  
 | |
| 
 | |
| /* Exported functions ---------------------------------------------------------*/
 | |
| /** @addtogroup DMA_Exported_Functions
 | |
|   * @{
 | |
|   */
 | |
| 
 | |
| /** @addtogroup DMA_Exported_Functions_Group1
 | |
|   *
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| @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  Initialize the DMA according to the specified
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|   *         parameters in the DMA_InitTypeDef and create the associated handle.
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|   * @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 = 0U;
 | |
|   uint32_t tickstart = HAL_GetTick();
 | |
|   DMA_Base_Registers *regs;
 | |
| 
 | |
|   /* 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));
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|   assert_param(IS_DMA_MODE(hdma->Init.Mode));
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|   assert_param(IS_DMA_PRIORITY(hdma->Init.Priority));
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|   assert_param(IS_DMA_FIFO_MODE_STATE(hdma->Init.FIFOMode));
 | |
|   /* Check the memory burst, peripheral burst and FIFO threshold parameters only
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|      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));
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|   }
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|   
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|   /* Change DMA peripheral state */
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|   hdma->State = HAL_DMA_STATE_BUSY;
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|   
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|   /* Allocate lock resource */
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|   __HAL_UNLOCK(hdma);
 | |
| 
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|   
 | |
|   /* Disable the peripheral */
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|   __HAL_DMA_DISABLE(hdma);
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|   
 | |
|   /* Check if the DMA Stream is effectively disabled */
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|   while((hdma->Instance->CR & DMA_SxCR_EN) != RESET)
 | |
|   {
 | |
|     /* Check for the Timeout */
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|     if((HAL_GetTick() - tickstart ) > HAL_TIMEOUT_DMA_ABORT)
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|     {
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|       /* Update error code */
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|       hdma->ErrorCode = HAL_DMA_ERROR_TIMEOUT;
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|       
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|       /* Change the DMA state */
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|       hdma->State = HAL_DMA_STATE_TIMEOUT;
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|       
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|       return HAL_TIMEOUT;
 | |
|     }
 | |
|   }
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|   
 | |
|   /* Get the CR register value */
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|   tmp = hdma->Instance->CR;
 | |
| 
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|   /* 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 | \
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|                       DMA_SxCR_PL    | DMA_SxCR_MSIZE  | DMA_SxCR_PSIZE  | \
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|                       DMA_SxCR_MINC  | DMA_SxCR_PINC   | DMA_SxCR_CIRC   | \
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|                       DMA_SxCR_DIR   | DMA_SxCR_CT     | DMA_SxCR_DBM));
 | |
| 
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|   /* Prepare the DMA Stream configuration */
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|   tmp |=  hdma->Init.Channel             | hdma->Init.Direction        |
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|           hdma->Init.PeriphInc           | hdma->Init.MemInc           |
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|           hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment |
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|           hdma->Init.Mode                | hdma->Init.Priority;
 | |
| 
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|   /* the Memory burst and peripheral burst are not used when the FIFO is disabled */
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|   if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE)
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|   {
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|     /* Get memory burst and peripheral burst */
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|     tmp |=  hdma->Init.MemBurst | hdma->Init.PeriphBurst;
 | |
|   }
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|   
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|   /* Write to DMA Stream CR register */
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|   hdma->Instance->CR = tmp;  
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| 
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|   /* Get the FCR register value */
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|   tmp = hdma->Instance->FCR;
 | |
| 
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|   /* Clear Direct mode and FIFO threshold bits */
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|   tmp &= (uint32_t)~(DMA_SxFCR_DMDIS | DMA_SxFCR_FTH);
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| 
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|   /* Prepare the DMA Stream FIFO configuration */
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|   tmp |= hdma->Init.FIFOMode;
 | |
| 
 | |
|   /* The FIFO threshold is not used when the FIFO mode is disabled */
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|   if(hdma->Init.FIFOMode == DMA_FIFOMODE_ENABLE)
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|   {
 | |
|     /* Get the FIFO threshold */
 | |
|     tmp |= hdma->Init.FIFOThreshold;
 | |
|     
 | |
|     /* Check compatibility between FIFO threshold level and size of the memory burst */
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|     /* for INCR4, INCR8, INCR16 bursts */
 | |
|     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 */
 | |
|   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() */
 | |
|   regs = (DMA_Base_Registers *)DMA_CalcBaseAndBitshift(hdma);
 | |
|   
 | |
|   /* Clear all interrupt flags */
 | |
|   regs->IFCR = 0x3FU << hdma->StreamIndex;
 | |
| 
 | |
|   /* 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 error status */
 | |
|     return HAL_BUSY;
 | |
|   }
 | |
| 
 | |
|   /* Check the parameters */
 | |
|   assert_param(IS_DMA_STREAM_ALL_INSTANCE(hdma->Instance));
 | |
| 
 | |
|   /* Disable the selected DMA Streamx */
 | |
|   __HAL_DMA_DISABLE(hdma);
 | |
| 
 | |
|   /* Reset DMA Streamx control register */
 | |
|   hdma->Instance->CR   = 0U;
 | |
| 
 | |
|   /* Reset DMA Streamx number of data to transfer register */
 | |
|   hdma->Instance->NDTR = 0U;
 | |
| 
 | |
|   /* Reset DMA Streamx peripheral address register */
 | |
|   hdma->Instance->PAR  = 0U;
 | |
| 
 | |
|   /* Reset DMA Streamx memory 0 address register */
 | |
|   hdma->Instance->M0AR = 0U;
 | |
|   
 | |
|   /* Reset DMA Streamx memory 1 address register */
 | |
|   hdma->Instance->M1AR = 0U;
 | |
|   
 | |
|   /* Reset DMA Streamx FIFO control register */
 | |
|   hdma->Instance->FCR  = (uint32_t)0x00000021U;
 | |
|   
 | |
|   /* Get DMA steam Base Address */  
 | |
|   regs = (DMA_Base_Registers *)DMA_CalcBaseAndBitshift(hdma);
 | |
|   
 | |
|   /* Clear all interrupt flags at correct offset within the register */
 | |
|   regs->IFCR = 0x3FU << hdma->StreamIndex;
 | |
|   
 | |
|   /* Clean all callbacks */
 | |
|   hdma->XferCpltCallback = NULL;
 | |
|   hdma->XferHalfCpltCallback = NULL;
 | |
|   hdma->XferM1CpltCallback = NULL;
 | |
|   hdma->XferM1HalfCpltCallback = NULL;
 | |
|   hdma->XferErrorCallback = NULL;
 | |
|   hdma->XferAbortCallback = NULL;  
 | |
| 
 | |
|   /* Reset the error code */
 | |
|   hdma->ErrorCode = HAL_DMA_ERROR_NONE;
 | |
| 
 | |
|   /* Reset 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)
 | |
| {
 | |
|   HAL_StatusTypeDef status = HAL_OK;
 | |
|   
 | |
|   /* Check the parameters */
 | |
|   assert_param(IS_DMA_BUFFER_SIZE(DataLength));
 | |
| 
 | |
|   /* 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;
 | |
|     
 | |
|     /* 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);
 | |
|     
 | |
|     /* Return error status */
 | |
|     status = HAL_BUSY;
 | |
|   } 
 | |
|   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;
 | |
| 
 | |
|   /* calculate DMA base and stream number */
 | |
|   DMA_Base_Registers *regs = (DMA_Base_Registers *)hdma->StreamBaseAddress;
 | |
|   
 | |
|   /* Check the parameters */
 | |
|   assert_param(IS_DMA_BUFFER_SIZE(DataLength));
 | |
|  
 | |
|   /* 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;
 | |
|     
 | |
|     /* Configure the source, destination address and the data length */
 | |
|     DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength);
 | |
|     
 | |
|     /* Clear all interrupt flags at correct offset within the register */
 | |
|     regs->IFCR = 0x3FU << hdma->StreamIndex;
 | |
|     
 | |
|     /* Enable Common interrupts*/
 | |
|     hdma->Instance->CR  |= DMA_IT_TC | DMA_IT_TE | DMA_IT_DME;
 | |
|     hdma->Instance->FCR |= DMA_IT_FE;
 | |
|     
 | |
|     if(hdma->XferHalfCpltCallback != NULL)
 | |
|     {
 | |
|       hdma->Instance->CR  |= DMA_IT_HT;
 | |
|     }
 | |
|     
 | |
|     /* Enable the Peripheral */
 | |
|     __HAL_DMA_ENABLE(hdma);
 | |
|   }
 | |
|   else
 | |
|   {
 | |
|     /* Process unlocked */
 | |
|     __HAL_UNLOCK(hdma);	  
 | |
|     
 | |
|     /* Return error status */
 | |
|     status = HAL_BUSY;
 | |
|   }
 | |
|   
 | |
|   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_Base_Registers *)hdma->StreamBaseAddress;
 | |
|   
 | |
|   uint32_t tickstart = HAL_GetTick();
 | |
|   
 | |
|   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 */
 | |
|     hdma->Instance->CR  &= ~(DMA_IT_TC | DMA_IT_TE | DMA_IT_DME);
 | |
|     hdma->Instance->FCR &= ~(DMA_IT_FE);
 | |
|     
 | |
|     if((hdma->XferHalfCpltCallback != NULL) || (hdma->XferM1HalfCpltCallback != NULL))
 | |
|     {
 | |
|       hdma->Instance->CR  &= ~(DMA_IT_HT);
 | |
|     }
 | |
|     
 | |
|     /* Disable the stream */
 | |
|     __HAL_DMA_DISABLE(hdma);
 | |
|     
 | |
|     /* Check if the DMA Stream is effectively disabled */
 | |
|     while((hdma->Instance->CR & DMA_SxCR_EN) != RESET)
 | |
|     {
 | |
|       /* 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_TIMEOUT;
 | |
|         
 | |
|         /* Process Unlocked */
 | |
|         __HAL_UNLOCK(hdma);
 | |
| 
 | |
|         return HAL_TIMEOUT;
 | |
|       }
 | |
|     }
 | |
|     
 | |
|     /* Clear all interrupt flags at correct offset within the register */
 | |
|     regs->IFCR = 0x3FU << hdma->StreamIndex;
 | |
|     
 | |
|     /* Change the DMA state*/
 | |
|     hdma->State = HAL_DMA_STATE_READY;
 | |
|     
 | |
|     /* Process Unlocked */
 | |
|     __HAL_UNLOCK(hdma);
 | |
|     
 | |
|   }
 | |
|   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)
 | |
| {
 | |
|   if(hdma->State != HAL_DMA_STATE_BUSY)
 | |
|   {
 | |
|     hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER;
 | |
|     return HAL_ERROR;
 | |
|   }
 | |
|   else
 | |
|   {
 | |
|     /* Set Abort State  */
 | |
|     hdma->State = HAL_DMA_STATE_ABORT;
 | |
|     
 | |
|     /* Disable the stream */
 | |
|     __HAL_DMA_DISABLE(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 recommended 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 mask_cpltlevel;
 | |
|   uint32_t tickstart = HAL_GetTick(); 
 | |
|   uint32_t tmpisr;
 | |
|   
 | |
|   /* calculate DMA base and stream number */
 | |
|   DMA_Base_Registers *regs;
 | |
| 
 | |
|   if(HAL_DMA_STATE_BUSY != hdma->State)
 | |
|   {
 | |
|     /* No transfer ongoing */
 | |
|     hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER;
 | |
|     __HAL_UNLOCK(hdma);
 | |
|     return HAL_ERROR;
 | |
|   }
 | |
| 
 | |
|   /* Polling mode not supported in circular mode and double buffering mode */
 | |
|   if ((hdma->Instance->CR & DMA_SxCR_CIRC) != RESET)
 | |
|   {
 | |
|     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 */
 | |
|     mask_cpltlevel = DMA_FLAG_TCIF0_4 << hdma->StreamIndex;
 | |
|   }
 | |
|   else
 | |
|   {
 | |
|     /* Half Transfer Complete flag */
 | |
|     mask_cpltlevel = DMA_FLAG_HTIF0_4 << hdma->StreamIndex;
 | |
|   }
 | |
|   
 | |
|   regs = (DMA_Base_Registers *)hdma->StreamBaseAddress;
 | |
|   tmpisr = regs->ISR;
 | |
|   
 | |
|   while(((tmpisr & mask_cpltlevel) == RESET) && ((hdma->ErrorCode & HAL_DMA_ERROR_TE) == RESET))
 | |
|   {
 | |
|     /* Check for the Timeout (Not applicable in circular mode)*/
 | |
|     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_READY;
 | |
| 
 | |
|         /* Process Unlocked */
 | |
|         __HAL_UNLOCK(hdma);
 | |
| 
 | |
|         return HAL_TIMEOUT;
 | |
|       }
 | |
|     }
 | |
| 
 | |
|     /* Get the ISR register value */
 | |
|     tmpisr = regs->ISR;
 | |
| 
 | |
|     if((tmpisr & (DMA_FLAG_TEIF0_4 << hdma->StreamIndex)) != RESET)
 | |
|     {
 | |
|       /* Update error code */
 | |
|       hdma->ErrorCode |= HAL_DMA_ERROR_TE;
 | |
|       
 | |
|       /* Clear the transfer error flag */
 | |
|       regs->IFCR = DMA_FLAG_TEIF0_4 << hdma->StreamIndex;
 | |
|     }
 | |
|     
 | |
|     if((tmpisr & (DMA_FLAG_FEIF0_4 << hdma->StreamIndex)) != RESET)
 | |
|     {
 | |
|       /* Update error code */
 | |
|       hdma->ErrorCode |= HAL_DMA_ERROR_FE;
 | |
|       
 | |
|       /* Clear the FIFO error flag */
 | |
|       regs->IFCR = DMA_FLAG_FEIF0_4 << hdma->StreamIndex;
 | |
|     }
 | |
|     
 | |
|     if((tmpisr & (DMA_FLAG_DMEIF0_4 << hdma->StreamIndex)) != RESET)
 | |
|     {
 | |
|       /* Update error code */
 | |
|       hdma->ErrorCode |= HAL_DMA_ERROR_DME;
 | |
|       
 | |
|       /* Clear the Direct Mode error flag */
 | |
|       regs->IFCR = DMA_FLAG_DMEIF0_4 << hdma->StreamIndex;
 | |
|     }
 | |
|   }
 | |
|   
 | |
|   if(hdma->ErrorCode != HAL_DMA_ERROR_NONE)
 | |
|   {
 | |
|     if((hdma->ErrorCode & HAL_DMA_ERROR_TE) != RESET)
 | |
|     {
 | |
|       HAL_DMA_Abort(hdma);
 | |
|     
 | |
|       /* Clear the half transfer and transfer complete flags */
 | |
|       regs->IFCR = (DMA_FLAG_HTIF0_4 | DMA_FLAG_TCIF0_4) << hdma->StreamIndex;
 | |
|     
 | |
|       /* Change the DMA state */
 | |
|       hdma->State= HAL_DMA_STATE_READY;
 | |
| 
 | |
|       /* Process Unlocked */
 | |
|       __HAL_UNLOCK(hdma);
 | |
| 
 | |
|       return HAL_ERROR;
 | |
|    }
 | |
|   }
 | |
|   
 | |
|   /* Get the level transfer complete flag */
 | |
|   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;
 | |
|     
 | |
|     hdma->State = HAL_DMA_STATE_READY;
 | |
| 
 | |
|     /* Process Unlocked */
 | |
|     __HAL_UNLOCK(hdma);
 | |
| 
 | |
|   }
 | |
|   else
 | |
|   {
 | |
|     /* Clear the half transfer flag */
 | |
|     regs->IFCR = (DMA_FLAG_HTIF0_4) << hdma->StreamIndex;
 | |
|   }
 | |
|   
 | |
|   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;
 | |
|   __IO uint32_t count = 0;
 | |
|   uint32_t timeout = SystemCoreClock / 9600;
 | |
| 
 | |
|   /* calculate DMA base and stream number */
 | |
|   DMA_Base_Registers *regs = (DMA_Base_Registers *)hdma->StreamBaseAddress;
 | |
| 
 | |
|   tmpisr = regs->ISR;
 | |
| 
 | |
|   /* Transfer Error Interrupt management ***************************************/
 | |
|   if ((tmpisr & (DMA_FLAG_TEIF0_4 << hdma->StreamIndex)) != RESET)
 | |
|   {
 | |
|     if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TE) != RESET)
 | |
|     {
 | |
|       /* Disable the transfer error interrupt */
 | |
|       hdma->Instance->CR  &= ~(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;
 | |
|     }
 | |
|   }
 | |
|   /* FIFO Error Interrupt management ******************************************/
 | |
|   if ((tmpisr & (DMA_FLAG_FEIF0_4 << hdma->StreamIndex)) != RESET)
 | |
|   {
 | |
|     if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_FE) != RESET)
 | |
|     {
 | |
|       /* Clear the FIFO error flag */
 | |
|       regs->IFCR = DMA_FLAG_FEIF0_4 << hdma->StreamIndex;
 | |
| 
 | |
|       /* Update error code */
 | |
|       hdma->ErrorCode |= HAL_DMA_ERROR_FE;
 | |
|     }
 | |
|   }
 | |
|   /* Direct Mode Error Interrupt management ***********************************/
 | |
|   if ((tmpisr & (DMA_FLAG_DMEIF0_4 << hdma->StreamIndex)) != RESET)
 | |
|   {
 | |
|     if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_DME) != RESET)
 | |
|     {
 | |
|       /* Clear the direct mode error flag */
 | |
|       regs->IFCR = DMA_FLAG_DMEIF0_4 << hdma->StreamIndex;
 | |
| 
 | |
|       /* Update error code */
 | |
|       hdma->ErrorCode |= HAL_DMA_ERROR_DME;
 | |
|     }
 | |
|   }
 | |
|   /* Half Transfer Complete Interrupt management ******************************/
 | |
|   if ((tmpisr & (DMA_FLAG_HTIF0_4 << hdma->StreamIndex)) != RESET)
 | |
|   {
 | |
|     if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_HT) != RESET)
 | |
|     {
 | |
|       /* 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)) != RESET)
 | |
|       {
 | |
|         /* Current memory buffer used is Memory 0 */
 | |
|         if((hdma->Instance->CR & DMA_SxCR_CT) == RESET)
 | |
|         {
 | |
|           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((hdma->Instance->CR & DMA_SxCR_CIRC) == RESET)
 | |
|         {
 | |
|           /* Disable the half transfer interrupt */
 | |
|           hdma->Instance->CR  &= ~(DMA_IT_HT);
 | |
|         }
 | |
|         
 | |
|         if(hdma->XferHalfCpltCallback != NULL)
 | |
|         {
 | |
|           /* Half transfer callback */
 | |
|           hdma->XferHalfCpltCallback(hdma);
 | |
|         }
 | |
|       }
 | |
|     }
 | |
|   }
 | |
|   /* Transfer Complete Interrupt management ***********************************/
 | |
|   if ((tmpisr & (DMA_FLAG_TCIF0_4 << hdma->StreamIndex)) != RESET)
 | |
|   {
 | |
|     if(__HAL_DMA_GET_IT_SOURCE(hdma, DMA_IT_TC) != RESET)
 | |
|     {
 | |
|       /* Clear the transfer complete flag */
 | |
|       regs->IFCR = DMA_FLAG_TCIF0_4 << hdma->StreamIndex;
 | |
|       
 | |
|       if(HAL_DMA_STATE_ABORT == hdma->State)
 | |
|       {
 | |
|         /* Disable all the transfer interrupts */
 | |
|         hdma->Instance->CR  &= ~(DMA_IT_TC | DMA_IT_TE | DMA_IT_DME);
 | |
|         hdma->Instance->FCR &= ~(DMA_IT_FE);
 | |
|         
 | |
|         if((hdma->XferHalfCpltCallback != NULL) || (hdma->XferM1HalfCpltCallback != NULL))
 | |
|         {
 | |
|           hdma->Instance->CR  &= ~(DMA_IT_HT);
 | |
|         }
 | |
| 
 | |
|         /* Clear all interrupt flags at correct offset within the register */
 | |
|         regs->IFCR = 0x3FU << hdma->StreamIndex;
 | |
| 
 | |
|         /* Change the DMA state */
 | |
|         hdma->State = HAL_DMA_STATE_READY;
 | |
| 
 | |
|         /* Process Unlocked */
 | |
|         __HAL_UNLOCK(hdma);
 | |
| 
 | |
|         if(hdma->XferAbortCallback != NULL)
 | |
|         {
 | |
|           hdma->XferAbortCallback(hdma);
 | |
|         }
 | |
|         return;
 | |
|       }
 | |
| 
 | |
|       if(((hdma->Instance->CR) & (uint32_t)(DMA_SxCR_DBM)) != RESET)
 | |
|       {
 | |
|         /* Current memory buffer used is Memory 0 */
 | |
|         if((hdma->Instance->CR & DMA_SxCR_CT) == RESET)
 | |
|         {
 | |
|           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((hdma->Instance->CR & DMA_SxCR_CIRC) == RESET)
 | |
|         {
 | |
|           /* Disable the transfer complete interrupt */
 | |
|           hdma->Instance->CR  &= ~(DMA_IT_TC);
 | |
| 
 | |
|           /* Change the DMA state */
 | |
|           hdma->State = HAL_DMA_STATE_READY;
 | |
| 
 | |
|           /* Process Unlocked */
 | |
|           __HAL_UNLOCK(hdma);
 | |
| 
 | |
|         }
 | |
| 
 | |
|         if(hdma->XferCpltCallback != NULL)
 | |
|         {
 | |
|           /* Transfer complete callback */
 | |
|           hdma->XferCpltCallback(hdma);
 | |
|         }
 | |
|       }
 | |
|     }
 | |
|   }
 | |
|   
 | |
|   /* manage error case */
 | |
|   if(hdma->ErrorCode != HAL_DMA_ERROR_NONE)
 | |
|   {
 | |
|     if((hdma->ErrorCode & HAL_DMA_ERROR_TE) != RESET)
 | |
|     {
 | |
|       hdma->State = HAL_DMA_STATE_ABORT;
 | |
| 
 | |
|       /* Disable the stream */
 | |
|       __HAL_DMA_DISABLE(hdma);
 | |
| 
 | |
|       do
 | |
|       {
 | |
|         if (++count > timeout)
 | |
|         {
 | |
|           break;
 | |
|         }
 | |
|       }
 | |
|       while((hdma->Instance->CR & DMA_SxCR_EN) != RESET);
 | |
| 
 | |
|       /* Change the DMA state */
 | |
|       hdma->State = HAL_DMA_STATE_READY;
 | |
| 
 | |
|       /* Process Unlocked */
 | |
|       __HAL_UNLOCK(hdma);
 | |
| 
 | |
|     }
 | |
| 
 | |
|     if(hdma->XferErrorCallback != NULL)
 | |
|     {
 | |
|       /* Transfer error callback */
 | |
|       hdma->XferErrorCallback(hdma);
 | |
|     }
 | |
|   }
 | |
| }
 | |
| 
 | |
| /**
 | |
|   * @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 callbacsk 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;
 | |
| 
 | |
|   /* 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:
 | |
|       /* Return error status */
 | |
|       status =  HAL_ERROR;
 | |
|       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;
 | |
|   
 | |
|   /* 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 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;
 | |
| 
 | |
|   /* Memory to Peripheral */
 | |
|   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;
 | |
|   }
 | |
|   /* Peripheral to Memory */
 | |
|   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 & 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];
 | |
|   
 | |
|   if (stream_number > 3U)
 | |
|   {
 | |
|     /* return pointer to HISR and HIFCR */
 | |
|     hdma->StreamBaseAddress = (((uint32_t)hdma->Instance & (uint32_t)(~0x3FFU)) + 4U);
 | |
|   }
 | |
|   else
 | |
|   {
 | |
|     /* return pointer to LISR and LIFCR */
 | |
|     hdma->StreamBaseAddress = ((uint32_t)hdma->Instance & (uint32_t)(~0x3FFU));
 | |
|   }
 | |
|   
 | |
|   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;
 | |
|   uint32_t tmp = hdma->Init.FIFOThreshold;
 | |
|   
 | |
|   /* Memory Data size equal to Byte */
 | |
|   if(hdma->Init.MemDataAlignment == DMA_MDATAALIGN_BYTE)
 | |
|   {
 | |
|     switch (tmp)
 | |
|     {
 | |
|     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 (tmp)
 | |
|     {
 | |
|     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 (tmp)
 | |
|     {
 | |
|     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; 
 | |
| }
 | |
| 
 | |
| /**
 | |
|   * @}
 | |
|   */
 | |
| 
 | |
| #endif /* HAL_DMA_MODULE_ENABLED */
 | |
| /**
 | |
|   * @}
 | |
|   */
 | |
| 
 | |
| /**
 | |
|   * @}
 | |
|   */
 | |
| 
 |