/** | |
****************************************************************************** | |
* @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 | |
* | |
@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 | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© Copyright (c) 2017 STMicroelectronics. | |
* All rights reserved.</center></h2> | |
* | |
* 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 "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 */ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |