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/**
******************************************************************************
* @file stm32f7xx_hal_sai_ex.c
* @author MCD Application Team
* @version V1.0.1
* @date 25-June-2015
* @brief SAI Extension HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of SAI extension peripheral:
* + Extension features functions
*
@verbatim
==============================================================================
##### SAI peripheral extension features #####
==============================================================================
##### How to use this driver #####
==============================================================================
[..] This driver provides functions to manage several sources to clock SAI
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2015 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 "stm32f7xx_hal.h"
/** @addtogroup STM32F7xx_HAL_Driver
* @{
*/
/** @defgroup SAIEx SAIEx
* @brief SAI Extension HAL module driver
* @{
*/
#ifdef HAL_SAI_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* SAI registers Masks */
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/** @defgroup SAI_Private_Functions SAI Private Functions
* @{
*/
/**
* @}
*/
/* Exported functions --------------------------------------------------------*/
/** @defgroup SAIEx_Exported_Functions SAI Extended Exported Functions
* @{
*/
/** @defgroup SAIEx_Exported_Functions_Group1 Extension features functions
* @brief Extension features functions
*
@verbatim
===============================================================================
##### Extension features Functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to manage the possible
SAI clock sources.
@endverbatim
* @{
*/
/**
* @brief Configure SAI Block synchronization mode
* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
* the configuration information for SAI module.
* @retval SAI Clock Input
*/
void SAI_BlockSynchroConfig(SAI_HandleTypeDef *hsai)
{
uint32_t tmpregisterGCR = 0;
/* This setting must be done with both audio block (A & B) disabled */
switch(hsai->Init.SynchroExt)
{
case SAI_SYNCEXT_DISABLE :
tmpregisterGCR = 0;
break;
case SAI_SYNCEXT_IN_ENABLE :
tmpregisterGCR = SAI_GCR_SYNCIN_0;
break;
case SAI_SYNCEXT_OUTBLOCKA_ENABLE :
tmpregisterGCR = SAI_GCR_SYNCOUT_0;
break;
case SAI_SYNCEXT_OUTBLOCKB_ENABLE :
tmpregisterGCR = SAI_GCR_SYNCOUT_1;
break;
default :
break;
}
if((hsai->Instance == SAI1_Block_A) || (hsai->Instance == SAI1_Block_B))
{
SAI1->GCR = tmpregisterGCR;
}
else
{
SAI2->GCR = tmpregisterGCR;
}
}
/**
* @brief Get SAI Input Clock based on SAI source clock selection
* @param hsai: pointer to a SAI_HandleTypeDef structure that contains
* the configuration information for SAI module.
* @retval SAI Clock Input
*/
uint32_t SAI_GetInputClock(SAI_HandleTypeDef *hsai)
{
/* This variable used to store the SAI_CK_x (value in Hz) */
uint32_t saiclocksource = 0;
if ((hsai->Instance == SAI1_Block_A) || (hsai->Instance == SAI1_Block_B))
{
saiclocksource = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SAI1);
}
else /* SAI2_Block_A || SAI2_Block_B*/
{
saiclocksource = HAL_RCCEx_GetPeriphCLKFreq(RCC_PERIPHCLK_SAI2);
}
/* the return result is the value of SAI clock */
return saiclocksource;
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_SAI_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
