/** | |
****************************************************************************** | |
* @file stm32l4xx_hal_sai_ex.c | |
* @author MCD Application Team | |
* @brief SAI Extended HAL module driver. | |
* This file provides firmware functions to manage the following | |
* functionality of the SAI Peripheral Controller: | |
* + Modify PDM microphone delays. | |
* | |
****************************************************************************** | |
* @attention | |
* | |
* <h2><center>© COPYRIGHT(c) 2017 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 "stm32l4xx_hal.h" | |
/** @addtogroup STM32L4xx_HAL_Driver | |
* @{ | |
*/ | |
#ifdef HAL_SAI_MODULE_ENABLED | |
#if defined(STM32L4R5xx) || defined(STM32L4R7xx) || defined(STM32L4R9xx) || defined(STM32L4S5xx) || defined(STM32L4S7xx) || defined(STM32L4S9xx) | |
/** @defgroup SAIEx SAIEx | |
* @brief SAI Extended HAL module driver | |
* @{ | |
*/ | |
/* Private types -------------------------------------------------------------*/ | |
/* Private variables ---------------------------------------------------------*/ | |
/* Private constants ---------------------------------------------------------*/ | |
#define SAI_PDM_DELAY_MASK 0x77U | |
#define SAI_PDM_DELAY_OFFSET 8U | |
#define SAI_PDM_RIGHT_DELAY_OFFSET 4U | |
/* Private macros ------------------------------------------------------------*/ | |
/* Private functions ---------------------------------------------------------*/ | |
/* Exported functions --------------------------------------------------------*/ | |
/** @defgroup SAIEx_Exported_Functions SAIEx Extended Exported Functions | |
* @{ | |
*/ | |
/** @defgroup SAIEx_Exported_Functions_Group1 Peripheral Control functions | |
* @brief SAIEx control functions | |
* | |
@verbatim | |
=============================================================================== | |
##### Extended features functions ##### | |
=============================================================================== | |
[..] This section provides functions allowing to: | |
(+) Modify PDM microphone delays | |
@endverbatim | |
* @{ | |
*/ | |
/** | |
* @brief Configure PDM microphone delays. | |
* @param hsai SAI handle. | |
* @param pdmMicDelay Microphone delays configuration. | |
* @retval HAL status | |
*/ | |
HAL_StatusTypeDef HAL_SAIEx_ConfigPdmMicDelay(SAI_HandleTypeDef *hsai, SAIEx_PdmMicDelayParamTypeDef *pdmMicDelay) | |
{ | |
HAL_StatusTypeDef status = HAL_OK; | |
uint32_t offset; | |
/* Check that SAI sub-block is SAI1 sub-block A */ | |
if (hsai->Instance != SAI1_Block_A) | |
{ | |
status = HAL_ERROR; | |
} | |
else | |
{ | |
/* Check microphone delay parameters */ | |
assert_param(IS_SAI_PDM_MIC_PAIRS_NUMBER(pdmMicDelay->MicPair)); | |
assert_param(IS_SAI_PDM_MIC_DELAY(pdmMicDelay->LeftDelay)); | |
assert_param(IS_SAI_PDM_MIC_DELAY(pdmMicDelay->RightDelay)); | |
/* Compute offset on PDMDLY register according mic pair number */ | |
offset = SAI_PDM_DELAY_OFFSET * (pdmMicDelay->MicPair - 1U); | |
/* Check SAI state and offset */ | |
if ((hsai->State != HAL_SAI_STATE_RESET) && (offset <= 24U)) | |
{ | |
/* Reset current delays for specified microphone */ | |
SAI1->PDMDLY &= ~(SAI_PDM_DELAY_MASK << offset); | |
/* Apply new microphone delays */ | |
SAI1->PDMDLY |= (((pdmMicDelay->RightDelay << SAI_PDM_RIGHT_DELAY_OFFSET) | pdmMicDelay->LeftDelay) << offset); | |
} | |
else | |
{ | |
status = HAL_ERROR; | |
} | |
} | |
return status; | |
} | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
#endif /* STM32L4R5xx || STM32L4R7xx || STM32L4R9xx || STM32L4S5xx || STM32L4S7xx || STM32L4S9xx */ | |
#endif /* HAL_SAI_MODULE_ENABLED */ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |