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Diffstat (limited to 'project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_dma_ex.c')
| -rw-r--r-- | project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_dma_ex.c | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_dma_ex.c b/project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_dma_ex.c new file mode 100644 index 0000000..260d972 --- /dev/null +++ b/project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_dma_ex.c @@ -0,0 +1,307 @@ +/** + ****************************************************************************** + * @file stm32l4xx_hal_dma_ex.c + * @author MCD Application Team + * @brief DMA Extension HAL module driver + * This file provides firmware functions to manage the following + * functionalities of the DMA Extension peripheral: + * + Extended features functions + * + ****************************************************************************** + * @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. + * + ****************************************************************************** + @verbatim + ============================================================================== + ##### How to use this driver ##### + ============================================================================== + [..] + The DMA Extension HAL driver can be used as follows: + + (+) Configure the DMA_MUX Synchronization Block using HAL_DMAEx_ConfigMuxSync function. + (+) Configure the DMA_MUX Request Generator Block using HAL_DMAEx_ConfigMuxRequestGenerator function. + Functions HAL_DMAEx_EnableMuxRequestGenerator and HAL_DMAEx_DisableMuxRequestGenerator can then be used + to respectively enable/disable the request generator. + + (+) To handle the DMAMUX Interrupts, the function HAL_DMAEx_MUX_IRQHandler should be called from + the DMAMUX IRQ handler i.e DMAMUX1_OVR_IRQHandler. + As only one interrupt line is available for all DMAMUX channels and request generators , HAL_DMAEx_MUX_IRQHandler should be + called with, as parameter, the appropriate DMA handle as many as used DMAs in the user project + (exception done if a given DMA is not using the DMAMUX SYNC block neither a request generator) + + -@- 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_CM0ARx or DMA_CM1ARx) when the channel is enabled. + + + @endverbatim + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l4xx_hal.h" + +#if defined(DMAMUX1) + +/** @addtogroup STM32L4xx_HAL_Driver + * @{ + */ + +/** @defgroup DMAEx DMAEx + * @brief DMA Extended HAL module driver + * @{ + */ + +#ifdef HAL_DMA_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private Constants ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + + +/** @defgroup DMAEx_Exported_Functions DMAEx Exported Functions + * @{ + */ + +/** @defgroup DMAEx_Exported_Functions_Group1 DMAEx Extended features functions + * @brief Extended features functions + * +@verbatim + =============================================================================== + ##### Extended features functions ##### + =============================================================================== + [..] This section provides functions allowing to: + + (+) Configure the DMAMUX Synchronization Block using HAL_DMAEx_ConfigMuxSync function. + (+) Configure the DMAMUX Request Generator Block using HAL_DMAEx_ConfigMuxRequestGenerator function. + Functions HAL_DMAEx_EnableMuxRequestGenerator and HAL_DMAEx_DisableMuxRequestGenerator can then be used + to respectively enable/disable the request generator. + +@endverbatim + * @{ + */ + + +/** + * @brief Configure the DMAMUX synchronization parameters for a given DMA channel (instance). + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA channel. + * @param pSyncConfig : pointer to HAL_DMA_MuxSyncConfigTypeDef : contains the DMAMUX synchronization parameters + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_ConfigMuxSync(DMA_HandleTypeDef *hdma, HAL_DMA_MuxSyncConfigTypeDef *pSyncConfig) +{ + /* Check the parameters */ + assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance)); + + assert_param(IS_DMAMUX_SYNC_SIGNAL_ID(pSyncConfig->SyncSignalID)); + + assert_param(IS_DMAMUX_SYNC_POLARITY(pSyncConfig-> SyncPolarity)); + assert_param(IS_DMAMUX_SYNC_STATE(pSyncConfig->SyncEnable)); + assert_param(IS_DMAMUX_SYNC_EVENT(pSyncConfig->EventEnable)); + assert_param(IS_DMAMUX_SYNC_REQUEST_NUMBER(pSyncConfig->RequestNumber)); + + /*Check if the DMA state is ready */ + if (hdma->State == HAL_DMA_STATE_READY) + { + /* Process Locked */ + __HAL_LOCK(hdma); + + /* Set the new synchronization parameters (and keep the request ID filled during the Init)*/ + MODIFY_REG(hdma->DMAmuxChannel->CCR, \ + (~DMAMUX_CxCR_DMAREQ_ID), \ + ((pSyncConfig->SyncSignalID) << DMAMUX_CxCR_SYNC_ID_Pos) | ((pSyncConfig->RequestNumber - 1U) << DMAMUX_CxCR_NBREQ_Pos) | \ + pSyncConfig->SyncPolarity | ((uint32_t)pSyncConfig->SyncEnable << DMAMUX_CxCR_SE_Pos) | \ + ((uint32_t)pSyncConfig->EventEnable << DMAMUX_CxCR_EGE_Pos)); + + /* Process UnLocked */ + __HAL_UNLOCK(hdma); + + return HAL_OK; + } + else + { + /*DMA State not Ready*/ + return HAL_ERROR; + } +} + +/** + * @brief Configure the DMAMUX request generator block used by the given DMA channel (instance). + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA channel. + * @param pRequestGeneratorConfig : pointer to HAL_DMA_MuxRequestGeneratorConfigTypeDef : + * contains the request generator parameters. + * + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_ConfigMuxRequestGenerator(DMA_HandleTypeDef *hdma, HAL_DMA_MuxRequestGeneratorConfigTypeDef *pRequestGeneratorConfig) +{ + /* Check the parameters */ + assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance)); + + assert_param(IS_DMAMUX_REQUEST_GEN_SIGNAL_ID(pRequestGeneratorConfig->SignalID)); + + assert_param(IS_DMAMUX_REQUEST_GEN_POLARITY(pRequestGeneratorConfig->Polarity)); + assert_param(IS_DMAMUX_REQUEST_GEN_REQUEST_NUMBER(pRequestGeneratorConfig->RequestNumber)); + + /* check if the DMA state is ready + and DMA is using a DMAMUX request generator block + */ + if ((hdma->State == HAL_DMA_STATE_READY) && (hdma->DMAmuxRequestGen != 0U)) + { + /* Process Locked */ + __HAL_LOCK(hdma); + + /* Set the request generator new parameters */ + hdma->DMAmuxRequestGen->RGCR = pRequestGeneratorConfig->SignalID | \ + ((pRequestGeneratorConfig->RequestNumber - 1U) << DMAMUX_RGxCR_GNBREQ_Pos) | \ + pRequestGeneratorConfig->Polarity; + /* Process UnLocked */ + __HAL_UNLOCK(hdma); + + return HAL_OK; + } + else + { + return HAL_ERROR; + } +} + +/** + * @brief Enable the DMAMUX request generator block used by the given DMA channel (instance). + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA channel. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_EnableMuxRequestGenerator(DMA_HandleTypeDef *hdma) +{ + /* Check the parameters */ + assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance)); + + /* check if the DMA state is ready + and DMA is using a DMAMUX request generator block + */ + if ((hdma->State != HAL_DMA_STATE_RESET) && (hdma->DMAmuxRequestGen != 0)) + { + + /* Enable the request generator*/ + hdma->DMAmuxRequestGen->RGCR |= DMAMUX_RGxCR_GE; + + return HAL_OK; + } + else + { + return HAL_ERROR; + } +} + +/** + * @brief Disable the DMAMUX request generator block used by the given DMA channel (instance). + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA channel. + * @retval HAL status + */ +HAL_StatusTypeDef HAL_DMAEx_DisableMuxRequestGenerator(DMA_HandleTypeDef *hdma) +{ + /* Check the parameters */ + assert_param(IS_DMA_ALL_INSTANCE(hdma->Instance)); + + /* check if the DMA state is ready + and DMA is using a DMAMUX request generator block + */ + if ((hdma->State != HAL_DMA_STATE_RESET) && (hdma->DMAmuxRequestGen != 0)) + { + + /* Disable the request generator*/ + hdma->DMAmuxRequestGen->RGCR &= ~DMAMUX_RGxCR_GE; + + return HAL_OK; + } + else + { + return HAL_ERROR; + } +} + +/** + * @brief Handles DMAMUX interrupt request. + * @param hdma pointer to a DMA_HandleTypeDef structure that contains + * the configuration information for the specified DMA channel. + * @retval None + */ +void HAL_DMAEx_MUX_IRQHandler(DMA_HandleTypeDef *hdma) +{ + /* Check for DMAMUX Synchronization overrun */ + if ((hdma->DMAmuxChannelStatus->CSR & hdma->DMAmuxChannelStatusMask) != 0U) + { + /* Disable the synchro overrun interrupt */ + hdma->DMAmuxChannel->CCR &= ~DMAMUX_CxCR_SOIE; + + /* Clear the DMAMUX synchro overrun flag */ + hdma->DMAmuxChannelStatus->CFR = hdma->DMAmuxChannelStatusMask; + + /* Update error code */ + hdma->ErrorCode |= HAL_DMA_ERROR_SYNC; + + if (hdma->XferErrorCallback != NULL) + { + /* Transfer error callback */ + hdma->XferErrorCallback(hdma); + } + } + + if (hdma->DMAmuxRequestGen != 0) + { + /* if using a DMAMUX request generator block Check for DMAMUX request generator overrun */ + if ((hdma->DMAmuxRequestGenStatus->RGSR & hdma->DMAmuxRequestGenStatusMask) != 0U) + { + /* Disable the request gen overrun interrupt */ + hdma->DMAmuxRequestGen->RGCR &= ~DMAMUX_RGxCR_OIE; + + /* Clear the DMAMUX request generator overrun flag */ + hdma->DMAmuxRequestGenStatus->RGCFR = hdma->DMAmuxRequestGenStatusMask; + + /* Update error code */ + hdma->ErrorCode |= HAL_DMA_ERROR_REQGEN; + + if (hdma->XferErrorCallback != NULL) + { + /* Transfer error callback */ + hdma->XferErrorCallback(hdma); + } + } + } +} + +/** + * @} + */ + +/** + * @} + */ + +#endif /* HAL_DMA_MODULE_ENABLED */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* DMAMUX1 */ |