141 lines
5.2 KiB
C
141 lines
5.2 KiB
C
/**
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******************************************************************************
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* @file stm32h7xx_hal_sai_ex.c
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* @author MCD Application Team
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* @version V1.2.0
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* @date 29-December-2017
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* @brief SAI Extended HAL module driver.
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* This file provides firmware functions to manage the following
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* functionality of the SAI Peripheral Controller:
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* + Modify PDM microphone delays.
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*
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32h7xx_hal.h"
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/** @addtogroup STM32H7xx_HAL_Driver
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* @{
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*/
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#ifdef HAL_SAI_MODULE_ENABLED
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/** @defgroup SAIEx SAIEx
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* @brief SAI Extended HAL module driver
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* @{
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*/
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/* Private types -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private constants ---------------------------------------------------------*/
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#define SAI_PDM_DELAY_MASK 0x77U
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#define SAI_PDM_DELAY_OFFSET 8U
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#define SAI_PDM_RIGHT_DELAY_OFFSET 4U
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/* Private macros ------------------------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/* Exported functions --------------------------------------------------------*/
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/** @defgroup SAIEx_Exported_Functions SAIEx Extended Exported Functions
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* @{
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*/
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/** @defgroup SAIEx_Exported_Functions_Group1 Peripheral Control functions
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* @brief SAIEx control functions
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*
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@verbatim
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===============================================================================
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##### Extended features functions #####
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===============================================================================
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[..] This section provides functions allowing to:
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(+) Modify PDM microphone delays
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@endverbatim
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* @{
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*/
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/**
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* @brief Configure PDM microphone delays.
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* @param hsai SAI handle.
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* @param pdmMicDelay Microphone delays configuration.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_SAIEx_ConfigPdmMicDelay(SAI_HandleTypeDef *hsai, SAIEx_PdmMicDelayParamTypeDef *pdmMicDelay)
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{
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HAL_StatusTypeDef status = HAL_OK;
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SAI_TypeDef *SaiBaseAddress = NULL;
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/* Get the SAI base address according to the SAI handle */
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SaiBaseAddress = (hsai->Instance == SAI1_Block_A) ? SAI1 : \
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((hsai->Instance == SAI2_Block_A) ? SAI2 : \
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((hsai->Instance == SAI3_Block_A) ? SAI3 : \
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((hsai->Instance == SAI4_Block_A) ? SAI4 : \
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NULL)));
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if((SaiBaseAddress != NULL) && (hsai->State != HAL_SAI_STATE_RESET))
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{
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/* Check microphone delay parameters */
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assert_param(IS_SAI_PDM_MIC_PAIRS_NUMBER(pdmMicDelay->MicPair));
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assert_param(IS_SAI_PDM_MIC_DELAY(pdmMicDelay->LeftDelay));
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assert_param(IS_SAI_PDM_MIC_DELAY(pdmMicDelay->RightDelay));
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/* Reset current delays for specified microphone */
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SaiBaseAddress->PDMDLY &= ~(SAI_PDM_DELAY_MASK << (SAI_PDM_DELAY_OFFSET * (pdmMicDelay->MicPair - 1)));
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/* Apply new microphone delays */
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SaiBaseAddress->PDMDLY |= (((pdmMicDelay->RightDelay << SAI_PDM_RIGHT_DELAY_OFFSET) | pdmMicDelay->LeftDelay) << \
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(SAI_PDM_DELAY_OFFSET * (pdmMicDelay->MicPair - 1)));
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}
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else
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{
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status = HAL_ERROR;
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}
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return status;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* HAL_SAI_MODULE_ENABLED */
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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