From a81fc41c3eb99e8fc52aa734ee63e13c937aab81 Mon Sep 17 00:00:00 2001 From: JanHenrik Date: Sun, 19 Jan 2020 00:56:37 +0100 Subject: added blink example --- .../STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_dma.c | 901 +++++++++++++++++++++ 1 file changed, 901 insertions(+) create mode 100644 Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_dma.c (limited to 'Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_dma.c') diff --git a/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_dma.c b/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_dma.c new file mode 100644 index 0000000..b7f91a4 --- /dev/null +++ b/Blink/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_dma.c @@ -0,0 +1,901 @@ +/** + ****************************************************************************** + * @file stm32f0xx_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 Channel + (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 Channel, program the required configuration through the following parameters: + Transfer Direction, Source and Destination data formats, + Circular or Normal mode, Channel Priority level, Source and Destination Increment mode, + using HAL_DMA_Init() function. + + (#) 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. + *** 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_Channel_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). + + *** DMA HAL driver macros list *** + ============================================= + [..] + Below the list of most used macros in DMA HAL driver. + + [..] + (@) You can refer to the DMA HAL driver header file for more useful macros + + @endverbatim + ****************************************************************************** + * @attention + * + *

© Copyright (c) 2016 STMicroelectronics. + * All rights reserved.

+ * + * 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 "stm32f0xx_hal.h" + +/** @addtogroup STM32F0xx_HAL_Driver + * @{ + */ + + +/** @defgroup DMA DMA + * @brief DMA HAL module driver + * @{ + */ + +#ifdef HAL_DMA_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/** @defgroup DMA_Private_Functions DMA Private Functions + * @{ + */ +static void DMA_SetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength); +static void DMA_CalcBaseAndBitshift(DMA_HandleTypeDef *hdma); +/** + * @} + */ + +/* Exported functions ---------------------------------------------------------*/ + +/** @defgroup DMA_Exported_Functions DMA Exported Functions + * @{ + */ + +/** @defgroup DMA_Exported_Functions_Group1 Initialization and de-initialization functions + * @brief Initialization and de-initialization functions + * +@verbatim + =============================================================================== + ##### Initialization and de-initialization functions ##### + =============================================================================== + [..] + This section provides functions allowing to initialize the DMA Channel source + and destination addresses, incrementation and data sizes, transfer direction, + circular/normal mode selection, memory-to-memory mode selection and Channel 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 + * parameters in the DMA_InitTypeDef and initialize the associated handle. + * @param hdma Pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Channel. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMA_Init(DMA_HandleTypeDef *hdma) +{ + uint32_t tmp = 0U; + + /* Check the DMA handle allocation */ + if(NULL == hdma) + { + 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)); + + /* Change DMA peripheral state */ + hdma->State = HAL_DMA_STATE_BUSY; + + /* Get the CR register value */ + tmp = hdma->Instance->CCR; + + /* Clear PL, MSIZE, PSIZE, MINC, PINC, CIRC, DIR bits */ + tmp &= ((uint32_t)~(DMA_CCR_PL | DMA_CCR_MSIZE | DMA_CCR_PSIZE | \ + DMA_CCR_MINC | DMA_CCR_PINC | DMA_CCR_CIRC | \ + DMA_CCR_DIR)); + + /* Prepare the DMA Channel configuration */ + tmp |= hdma->Init.Direction | + hdma->Init.PeriphInc | hdma->Init.MemInc | + hdma->Init.PeriphDataAlignment | hdma->Init.MemDataAlignment | + hdma->Init.Mode | hdma->Init.Priority; + + /* Write to DMA Channel CR register */ + hdma->Instance->CCR = tmp; + + /* Initialize DmaBaseAddress and ChannelIndex parameters used + by HAL_DMA_IRQHandler() and HAL_DMA_PollForTransfer() */ + DMA_CalcBaseAndBitshift(hdma); + + /* Initialise the error code */ + hdma->ErrorCode = HAL_DMA_ERROR_NONE; + + /* Initialize the DMA state*/ + hdma->State = HAL_DMA_STATE_READY; + + /* Allocate lock resource and initialize it */ + hdma->Lock = HAL_UNLOCKED; + + return HAL_OK; +} + +/** + * @brief DeInitialize the DMA peripheral + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Channel. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMA_DeInit(DMA_HandleTypeDef *hdma) +{ + /* Check the DMA handle allocation */ + if(NULL == hdma) + { + return HAL_ERROR; + } + + /* Check the parameters */ + assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance)); + + /* Disable the selected DMA Channelx */ + hdma->Instance->CCR &= ~DMA_CCR_EN; + + /* Reset DMA Channel control register */ + hdma->Instance->CCR = 0U; + + /* Reset DMA Channel Number of Data to Transfer register */ + hdma->Instance->CNDTR = 0U; + + /* Reset DMA Channel peripheral address register */ + hdma->Instance->CPAR = 0U; + + /* Reset DMA Channel memory address register */ + hdma->Instance->CMAR = 0U; + +/* Get DMA Base Address */ + DMA_CalcBaseAndBitshift(hdma); + + /* Clear all flags */ + hdma->DmaBaseAddress->IFCR = DMA_FLAG_GL1 << hdma->ChannelIndex; + + /* Clean callbacks */ + hdma->XferCpltCallback = NULL; + hdma->XferHalfCpltCallback = 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; +} + +/** + * @} + */ + +/** @defgroup DMA_Exported_Functions_Group2 Input and Output operation functions + * @brief I/O operation functions + * +@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 Start the DMA Transfer. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Channel. + * @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; + + hdma->ErrorCode = HAL_DMA_ERROR_NONE; + + /* Disable the peripheral */ + hdma->Instance->CCR &= ~DMA_CCR_EN; + + /* Configure the source, destination address and the data length */ + DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength); + + /* Enable the Peripheral */ + hdma->Instance->CCR |= DMA_CCR_EN; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hdma); + + /* Remain BUSY */ + 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 Channel. + * @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)); + + /* Process locked */ + __HAL_LOCK(hdma); + + if(HAL_DMA_STATE_READY == hdma->State) + { + /* Change DMA peripheral state */ + hdma->State = HAL_DMA_STATE_BUSY; + + hdma->ErrorCode = HAL_DMA_ERROR_NONE; + + /* Disable the peripheral */ + hdma->Instance->CCR &= ~DMA_CCR_EN; + + /* Configure the source, destination address and the data length */ + DMA_SetConfig(hdma, SrcAddress, DstAddress, DataLength); + + /* Enable the transfer complete, & transfer error interrupts */ + /* Half transfer interrupt is optional: enable it only if associated callback is available */ + if(NULL != hdma->XferHalfCpltCallback ) + { + hdma->Instance->CCR |= (DMA_IT_TC | DMA_IT_HT | DMA_IT_TE); + } + else + { + hdma->Instance->CCR |= (DMA_IT_TC | DMA_IT_TE); + hdma->Instance->CCR &= ~DMA_IT_HT; + } + + /* Enable the Peripheral */ + hdma->Instance->CCR |= DMA_CCR_EN; + } + else + { + /* Process Unlocked */ + __HAL_UNLOCK(hdma); + + /* Remain BUSY */ + status = HAL_BUSY; + } + + return status; +} + +/** + * @brief Abort the DMA Transfer. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Channel. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMA_Abort(DMA_HandleTypeDef *hdma) +{ + if(hdma->State != HAL_DMA_STATE_BUSY) + { + /* no transfer ongoing */ + hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER; + + /* Process Unlocked */ + __HAL_UNLOCK(hdma); + + return HAL_ERROR; + } + else + { + /* Disable DMA IT */ + hdma->Instance->CCR &= ~(DMA_IT_TC | DMA_IT_HT | DMA_IT_TE); + + /* Disable the channel */ + hdma->Instance->CCR &= ~DMA_CCR_EN; + + /* Clear all flags */ + hdma->DmaBaseAddress->IFCR = (DMA_FLAG_GL1 << hdma->ChannelIndex); + } + /* Change the DMA state*/ + hdma->State = HAL_DMA_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hdma); + + return HAL_OK; +} + +/** + * @brief Abort 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) +{ + HAL_StatusTypeDef status = HAL_OK; + + if(HAL_DMA_STATE_BUSY != hdma->State) + { + /* no transfer ongoing */ + hdma->ErrorCode = HAL_DMA_ERROR_NO_XFER; + + status = HAL_ERROR; + } + else + { + + /* Disable DMA IT */ + hdma->Instance->CCR &= ~(DMA_IT_TC | DMA_IT_HT | DMA_IT_TE); + + /* Disable the channel */ + hdma->Instance->CCR &= ~DMA_CCR_EN; + + /* Clear all flags */ + hdma->DmaBaseAddress->IFCR = DMA_FLAG_GL1 << hdma->ChannelIndex; + + /* Change the DMA state */ + hdma->State = HAL_DMA_STATE_READY; + + /* Process Unlocked */ + __HAL_UNLOCK(hdma); + + /* Call User Abort callback */ + if(hdma->XferAbortCallback != NULL) + { + hdma->XferAbortCallback(hdma); + } + } + return status; +} + +/** + * @brief Polling for transfer complete. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Channel. + * @param CompleteLevel Specifies the DMA level complete. + * @param Timeout Timeout duration. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMA_PollForTransfer(DMA_HandleTypeDef *hdma, uint32_t CompleteLevel, uint32_t Timeout) +{ + uint32_t temp; + uint32_t tickstart = 0U; + + 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 */ + if (RESET != (hdma->Instance->CCR & DMA_CCR_CIRC)) + { + hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED; + return HAL_ERROR; + } + + /* Get the level transfer complete flag */ + if(HAL_DMA_FULL_TRANSFER == CompleteLevel) + { + /* Transfer Complete flag */ + temp = DMA_FLAG_TC1 << hdma->ChannelIndex; + } + else + { + /* Half Transfer Complete flag */ + temp = DMA_FLAG_HT1 << hdma->ChannelIndex; + } + + /* Get tick */ + tickstart = HAL_GetTick(); + + while(RESET == (hdma->DmaBaseAddress->ISR & temp)) + { + if(RESET != (hdma->DmaBaseAddress->ISR & (DMA_FLAG_TE1 << hdma->ChannelIndex))) + { + /* When a DMA transfer error occurs */ + /* A hardware clear of its EN bits is performed */ + /* Clear all flags */ + hdma->DmaBaseAddress->IFCR = DMA_FLAG_GL1 << hdma->ChannelIndex; + + /* 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 */ + if(Timeout != HAL_MAX_DELAY) + { + if((Timeout == 0U) || ((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_ERROR; + } + } + } + + if(HAL_DMA_FULL_TRANSFER == CompleteLevel) + { + /* Clear the transfer complete flag */ + hdma->DmaBaseAddress->IFCR = DMA_FLAG_TC1 << hdma->ChannelIndex; + + /* The selected Channelx EN bit is cleared (DMA is disabled and + all transfers are complete) */ + hdma->State = HAL_DMA_STATE_READY; + } + else + { + /* Clear the half transfer complete flag */ + hdma->DmaBaseAddress->IFCR = DMA_FLAG_HT1 << hdma->ChannelIndex; + } + + /* Process unlocked */ + __HAL_UNLOCK(hdma); + + return HAL_OK; +} + +/** + * @brief Handle DMA interrupt request. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Channel. + * @retval None + */ +void HAL_DMA_IRQHandler(DMA_HandleTypeDef *hdma) +{ + uint32_t flag_it = hdma->DmaBaseAddress->ISR; + uint32_t source_it = hdma->Instance->CCR; + + /* Half Transfer Complete Interrupt management ******************************/ + if ((RESET != (flag_it & (DMA_FLAG_HT1 << hdma->ChannelIndex))) && (RESET != (source_it & DMA_IT_HT))) + { + /* Disable the half transfer interrupt if the DMA mode is not CIRCULAR */ + if((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U) + { + /* Disable the half transfer interrupt */ + hdma->Instance->CCR &= ~DMA_IT_HT; + } + + /* Clear the half transfer complete flag */ + hdma->DmaBaseAddress->IFCR = DMA_FLAG_HT1 << hdma->ChannelIndex; + + /* DMA peripheral state is not updated in Half Transfer */ + /* State is updated only in Transfer Complete case */ + + if(hdma->XferHalfCpltCallback != NULL) + { + /* Half transfer callback */ + hdma->XferHalfCpltCallback(hdma); + } + } + + /* Transfer Complete Interrupt management ***********************************/ + else if ((RESET != (flag_it & (DMA_FLAG_TC1 << hdma->ChannelIndex))) && (RESET != (source_it & DMA_IT_TC))) + { + if((hdma->Instance->CCR & DMA_CCR_CIRC) == 0U) + { + /* Disable the transfer complete & transfer error interrupts */ + /* if the DMA mode is not CIRCULAR */ + hdma->Instance->CCR &= ~(DMA_IT_TC | DMA_IT_TE); + + /* Change the DMA state */ + hdma->State = HAL_DMA_STATE_READY; + } + + /* Clear the transfer complete flag */ + hdma->DmaBaseAddress->IFCR = DMA_FLAG_TC1 << hdma->ChannelIndex; + + /* Process Unlocked */ + __HAL_UNLOCK(hdma); + + if(hdma->XferCpltCallback != NULL) + { + /* Transfer complete callback */ + hdma->XferCpltCallback(hdma); + } + } + + /* Transfer Error Interrupt management ***************************************/ + else if (( RESET != (flag_it & (DMA_FLAG_TE1 << hdma->ChannelIndex))) && (RESET != (source_it & DMA_IT_TE))) + { + /* When a DMA transfer error occurs */ + /* A hardware clear of its EN bits is performed */ + /* Then, disable all DMA interrupts */ + hdma->Instance->CCR &= ~(DMA_IT_TC | DMA_IT_HT | DMA_IT_TE); + + /* Clear all flags */ + hdma->DmaBaseAddress->IFCR = DMA_FLAG_GL1 << hdma->ChannelIndex; + + /* Update error code */ + hdma->ErrorCode = HAL_DMA_ERROR_TE; + + /* 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 identifer + * a HAL_DMA_CallbackIDTypeDef ENUM 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; + + /* 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_ERROR_CB_ID: + hdma->XferErrorCallback = pCallback; + break; + + case HAL_DMA_XFER_ABORT_CB_ID: + hdma->XferAbortCallback = pCallback; + break; + + default: + status = HAL_ERROR; + break; + } + } + else + { + 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 identifer + * 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_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->XferErrorCallback = NULL; + hdma->XferAbortCallback = NULL; + break; + + default: + status = HAL_ERROR; + break; + } + } + else + { + status = HAL_ERROR; + } + + /* Release Lock */ + __HAL_UNLOCK(hdma); + + return status; +} + +/** + * @} + */ + +/** @defgroup DMA_Exported_Functions_Group3 Peripheral State functions + * @brief Peripheral State functions + * +@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 Channel. + * @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 Channel. + * @retval DMA Error Code + */ +uint32_t HAL_DMA_GetError(DMA_HandleTypeDef *hdma) +{ + return hdma->ErrorCode; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup DMA_Private_Functions + * @{ + */ + +/** + * @brief Set the DMA Transfer parameters. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Channel. + * @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 all flags */ + hdma->DmaBaseAddress->IFCR = (DMA_FLAG_GL1 << hdma->ChannelIndex); + + /* Configure DMA Channel data length */ + hdma->Instance->CNDTR = DataLength; + + /* Memory to Peripheral */ + if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH) + { + /* Configure DMA Channel destination address */ + hdma->Instance->CPAR = DstAddress; + + /* Configure DMA Channel source address */ + hdma->Instance->CMAR = SrcAddress; + } + /* Peripheral to Memory */ + else + { + /* Configure DMA Channel source address */ + hdma->Instance->CPAR = SrcAddress; + + /* Configure DMA Channel destination address */ + hdma->Instance->CMAR = DstAddress; + } +} + +/** + * @brief set the DMA base address and channel index depending on DMA instance + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Stream. + * @retval None + */ +static void DMA_CalcBaseAndBitshift(DMA_HandleTypeDef *hdma) +{ +#if defined (DMA2) + /* calculation of the channel index */ + if ((uint32_t)(hdma->Instance) < (uint32_t)(DMA2_Channel1)) + { + /* DMA1 */ + hdma->ChannelIndex = (((uint32_t)hdma->Instance - (uint32_t)DMA1_Channel1) / ((uint32_t)DMA1_Channel2 - (uint32_t)DMA1_Channel1)) << 2U; + hdma->DmaBaseAddress = DMA1; + } + else + { + /* DMA2 */ + hdma->ChannelIndex = (((uint32_t)hdma->Instance - (uint32_t)DMA2_Channel1) / ((uint32_t)DMA2_Channel2 - (uint32_t)DMA2_Channel1)) << 2U; + hdma->DmaBaseAddress = DMA2; + } +#else + /* calculation of the channel index */ + /* DMA1 */ + hdma->ChannelIndex = (((uint32_t)hdma->Instance - (uint32_t)DMA1_Channel1) / ((uint32_t)DMA1_Channel2 - (uint32_t)DMA1_Channel1)) << 2U; + hdma->DmaBaseAddress = DMA1; +#endif +} + +/** + * @} + */ + +/** + * @} + */ +#endif /* HAL_DMA_MODULE_ENABLED */ + +/** + * @} + */ + + /** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit