Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_dma_ex.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_dma_ex.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,333 @@ +/** + ****************************************************************************** + * @file stm32f4xx_hal_dma_ex.c + * @author MCD Application Team + * @version V1.5.0 + * @date 06-May-2016 + * @brief DMA Extension HAL module driver + * This file provides firmware functions to manage the following + * functionalities of the DMA Extension peripheral: + * + Extended features functions + * + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + The DMA Extension HAL driver can be used as follows: + (#) Start a multi buffer transfer using the HAL_DMA_MultiBufferStart() function + for polling mode or HAL_DMA_MultiBufferStart_IT() for interrupt mode. + + -@- In Memory-to-Memory transfer mode, Multi (Double) Buffer mode is not allowed. + -@- When Multi (Double) Buffer mode is enabled the, transfer is circular by default. + -@- In Multi (Double) buffer mode, it is possible to update the base address for + the AHB memory port on the fly (DMA_SxM0AR or DMA_SxM1AR) when the stream is enabled. + + @endverbatim + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_hal.h" + +/** @addtogroup STM32F4xx_HAL_Driver + * @{ + */ + +/** @defgroup DMAEx DMAEx + * @brief DMA Extended HAL module driver + * @{ + */ + +#ifdef HAL_DMA_MODULE_ENABLED + +/* Private types -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private Constants ---------------------------------------------------------*/ +/* Private macros ------------------------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ +/** @addtogroup DMAEx_Private_Functions + * @{ + */ +static void DMA_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength); +/** + * @} + */ + +/* Exported functions ---------------------------------------------------------*/ + +/** @addtogroup DMAEx_Exported_Functions + * @{ + */ + + +/** @addtogroup DMAEx_Exported_Functions_Group1 + * +@verbatim + =============================================================================== + ##### Extended features functions ##### + =============================================================================== + [..] This section provides functions allowing to: + (+) Configure the source, destination address and data length and + Start MultiBuffer DMA transfer + (+) Configure the source, destination address and data length and + Start MultiBuffer DMA transfer with interrupt + (+) Change on the fly the memory0 or memory1 address. + +@endverbatim + * @{ + */ + + +/** + * @brief Starts the multi_buffer 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 SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer + * @param DataLength: The length of data to be transferred from source to destination + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check the parameters */ + assert_param(IS_DMA_BUFFER_SIZE(DataLength)); + + /* Memory-to-memory transfer not supported in double buffering mode */ + if (hdma->Init.Direction == DMA_MEMORY_TO_MEMORY) + { + hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED; + status = HAL_ERROR; + } + else + { + /* Process Locked */ + __HAL_LOCK(hdma); + + if(HAL_DMA_STATE_READY == hdma->State) + { + /* Change DMA peripheral state */ + hdma->State = HAL_DMA_STATE_BUSY; + + /* Enable the double buffer mode */ + hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM; + + /* Configure DMA Stream destination address */ + hdma->Instance->M1AR = SecondMemAddress; + + /* Configure the source, destination address and the data length */ + DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength); + + /* Enable the peripheral */ + __HAL_DMA_ENABLE(hdma); + } + else + { + /* Return error status */ + status = HAL_BUSY; + } + } + return status; +} + +/** + * @brief Starts the multi_buffer 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 SecondMemAddress: The second memory Buffer address in case of multi buffer Transfer + * @param DataLength: The length of data to be transferred from source to destination + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_MultiBufferStart_IT(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t SecondMemAddress, uint32_t DataLength) +{ + HAL_StatusTypeDef status = HAL_OK; + + /* Check the parameters */ + assert_param(IS_DMA_BUFFER_SIZE(DataLength)); + + /* Memory-to-memory transfer not supported in double buffering mode */ + if (hdma->Init.Direction == DMA_MEMORY_TO_MEMORY) + { + hdma->ErrorCode = HAL_DMA_ERROR_NOT_SUPPORTED; + return HAL_ERROR; + } + + /* Check callback functions */ + if ((NULL == hdma->XferCpltCallback) || (NULL == hdma->XferM1CpltCallback) || (NULL == hdma->XferErrorCallback)) + { + hdma->ErrorCode = HAL_DMA_ERROR_PARAM; + return HAL_ERROR; + } + + /* Process locked */ + __HAL_LOCK(hdma); + + if(HAL_DMA_STATE_READY == hdma->State) + { + /* Change DMA peripheral state */ + hdma->State = HAL_DMA_STATE_BUSY; + + /* Initialize the error code */ + hdma->ErrorCode = HAL_DMA_ERROR_NONE; + + /* Enable the Double buffer mode */ + hdma->Instance->CR |= (uint32_t)DMA_SxCR_DBM; + + /* Configure DMA Stream destination address */ + hdma->Instance->M1AR = SecondMemAddress; + + /* Configure the source, destination address and the data length */ + DMA_MultiBufferSetConfig(hdma, SrcAddress, DstAddress, DataLength); + + /* Clear all flags */ + __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_TC_FLAG_INDEX(hdma)); + __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_HT_FLAG_INDEX(hdma)); + __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_TE_FLAG_INDEX(hdma)); + __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_DME_FLAG_INDEX(hdma)); + __HAL_DMA_CLEAR_FLAG (hdma, __HAL_DMA_GET_FE_FLAG_INDEX(hdma)); + + /* 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->XferM1HalfCpltCallback != 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 Change the memory0 or memory1 address on the fly. + * @param hdma: pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA Stream. + * @param Address: The new address + * @param memory: the memory to be changed, This parameter can be one of + * the following values: + * MEMORY0 / + * MEMORY1 + * @note The MEMORY0 address can be changed only when the current transfer use + * MEMORY1 and the MEMORY1 address can be changed only when the current + * transfer use MEMORY0. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_ChangeMemory(DMA_HandleTypeDef *hdma, uint32_t Address, HAL_DMA_MemoryTypeDef memory) +{ + if(memory == MEMORY0) + { + /* change the memory0 address */ + hdma->Instance->M0AR = Address; + } + else + { + /* change the memory1 address */ + hdma->Instance->M1AR = Address; + } + + return HAL_OK; +} + +/** + * @} + */ + +/** + * @} + */ + +/** @addtogroup DMAEx_Private_Functions + * @{ + */ + +/** + * @brief Set 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_MultiBufferSetConfig(DMA_HandleTypeDef *hdma, uint32_t SrcAddress, uint32_t DstAddress, uint32_t DataLength) +{ + /* Configure DMA Stream data length */ + hdma->Instance->NDTR = DataLength; + + /* Peripheral to Memory */ + if((hdma->Init.Direction) == DMA_MEMORY_TO_PERIPH) + { + /* Configure DMA Stream destination address */ + hdma->Instance->PAR = DstAddress; + + /* Configure DMA Stream source address */ + hdma->Instance->M0AR = SrcAddress; + } + /* Memory to Peripheral */ + else + { + /* Configure DMA Stream source address */ + hdma->Instance->PAR = SrcAddress; + + /* Configure DMA Stream destination address */ + hdma->Instance->M0AR = DstAddress; + } +} + +/** + * @} + */ + +#endif /* HAL_DMA_MODULE_ENABLED */ +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/